GB/T 5169.16-2002 Fire hazard tests for electrical and electronic products Part 16: 50W horizontal and vertical flame test methods
Some standard content:
ICS.29.020
National Standard of the People's Republic of China
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Fire hazard testing for electric and electronic products-Part 16:50 W horizontal and vertical flame test methods(IEC 60695-11-10:1999,Fire hazard testing—Part 11-10:Test flames-5o W horizontal and vertical flame test methods, IDT)2002-06-13 release
People's Republic of China
General Administration of Quality Supervision, Inspection and Quarantine
2003-01-01 implementation
GB/T5169.16-2002/IEC60695-11-10.1999 Foreword
GB/T5169 "Fire hazard test for electrical and electronic products" has been issued and implemented before: G13/T5169.1~-1997 Fire hazard test for electric and electronic products Part 4: Fire test terminology GI/T5169.22002
! Fire hazard testing for electric and electronic products Part 2: Guidelines for fire hazard assessment General principles GB/T 5169. 3—1985
Fire hazard testing for electric and electronic products
Guidelines for the formulation of technical requirements and test specifications for fire hazard assessment of electronic components
GB/T 5169. 5-1997
Part 2: Test methods Part 2: Needle flame test Fire hazard testing for electric and electronic products
6 Test methods for poor contact of heaters used in fire hazard testing for electric and electronic products GB/T 5169. 61983
GB/T 5169.7-2001
GB/T 5169.8--1985
Comment on properties and test methods
GB/T 5169. 9—1993
Guidelines for the use of preselection procedures
GB/T 5169- 10---1597
GB/T 5169.11—1007
G/T5169.12—1999
GB/T 5169.13-1999
GB/T 5169.14—2001
G13/Z 5169.152001
G3/T 5169. 16--2002
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic productswwW.bzxz.Net
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Test method
Fire hazard test for electric and electronic products
Fire hazard test for electric and electronic products
Test method||tt ||Test method for hot wire flammability of finished products
Test method for glow-wire flammability test of materials Test method for glow-wire ignitability of materials
Test method
Test method 1kW nominal premixed test flame and fire hazard test for electric and electronic products
Test method 500 nominal test flames Fire hazard test for electric and electronic products
Part 16: 50W horizontal and vertical flame test method GB/T5169.17-2002 Fire hazard test for electric and electronic products Part 17: 500W flame test method GB/T5169.16 is the 16th part of GB/T5169 Fire hazard test for electric and electronic products. This Part is equivalent to 1EC5069511-10:1999 "Fire hazard tests Part 11-10: Test flame 50W horizontal and vertical fire test method" (English version), but with minor editorial modifications in accordance with 4.2h) and 5.2 of GH/T20000.2-2001 "Guide to standardization work Part 2: Rules for the use of international standards". In this part, 8.2.1) "If the first set of three test samples (see 7.2)", in the original text of 1EC, it is \. (see 7.3)", which is suspected to be wrong and should be ". (see .2" Appendix A and Appendix B of this part are informative appendices. This part is proposed by the China Electrical Equipment Industry Association. This part is under the jurisdiction of the National Electrical and Electronic Products Environmental Technology Standardization Technical Committee (CSBTS/TC8). This part was drafted by Guangzhou Electrical Science Research Institute. The main drafters of this part are Xie Jianhua and Chen Ling. GB/T 5169. 16—2002/1EC 60695-11-10: 1999 Introduction
When considering the test methods of this part of ISO 14001, it is important to distinguish between "finished product testing" and "preselection testing". Finished product testing is a test performed on a complete product, part, component or assembly to assess the fire hazard; preselection testing is a test of the burning characteristics of a material (part, component or assembly).
Preselection testing of materials generally uses test pieces of a standard shape (the shape is very simple), such as rectangular bars or short plates, and are often prepared by standard molding processes.
It should be emphasized that the use of preselection test data given in this part of ISO 14001 requires careful consideration to ensure that the data are appropriate for the intended application and to avoid misapplication. and misunderstanding. "The actual fire resistance performance of an individual component or a product is affected by its environment, design parameters (shape and size), manufacturing process, heat transfer effect, type of potential ignition source and length of contact with the ignition source. It is important to remember that these characteristics may also be affected by its foreseeable use, improper use and environmental exposure. The advantages of pre-selection are as follows:
hole) A material that reacts better than another material when made into a standard specimen test will usually react better when used as a finished product component, but possible synergistic effects should be avoided, b) Data related to relevant combustion characteristics can help select materials, components and assemblies in the design stage. () Compared with finished product testing In comparison, the accuracy of preselection tests is usually higher, and the sensitivity may also be superior. d) Preselection tests can be used in the decision-making process aimed at minimizing the risk of fire. When used to assess the risk of fire, it can lead to a reduction in the number of finished product tests. As a result, the total testing work is reduced. t) When there is a need to rapidly increase the requirements for fire hazards, it is only necessary to increase the requirements for preselection tests and improve the test methods for finished products:
The classification and grading obtained by the department based on the results of preselection tests can be used to specify the minimum basic properties of the materials used in the product specifications. It is recommended that when replacing finished product tests with preselection tests, the safety factor must be increased and efforts must be made to ensure that the finished product has satisfactory performance. Performance. Finished product testing can prevent the pre-selection method from limiting innovative designs and limiting the selection of more economical materials. Therefore, after the pre-selection test, it may be necessary to conduct a value analysis of the finished product so as not to make excessive requirements on the product except for the absolutely necessary performance. GB/T51G9.2 points out that any circuit of an electrical and electronic product that is energized has the risk of fire. For this risk, the design standards of the circuits and equipment that make up the components and the standards for the selection of materials are to reduce the possibility of fire even when foreseeable abnormal use, faults or failures occur. The actual purpose is to prevent the energized parts from catching fire. If a part is ignited and catches fire, it is best to control the fire within the casing of the electrical and electronic product.
The best way to test the fire hazard of electrical and electronic products is to accurately reproduce the conditions under which a fire actually occurs. However, this is impossible in most cases. Therefore, it is better to simulate the actual effects as realistically as possible according to the actual principle to test the fire hazard of electrical and electronic products.
(G13/T 5169.S stipulates that on the basis of the specified test,The standard also provides a general description of the guidance on how to relate the specific functions of electrical and electronic products and their components and assemblies to the properties of the materials being tested, and the guidance on demonstrating the significance and limitations of such preselection methods. ISO/TR10840 summarizes the special issues related to plastic fire testing, which can be considered when evaluating and interpreting test results.
1 Scope
GB/T 5169. 16—2002/IEC 60695-11-10: 1999 Fire hazard testing for electrical and electronic products
Part 16: 50W horizontal and vertical flames
Test method
This part of GB/T5169 specifies a small laboratory screening method for comparing the relative burning characteristics of plastic and other non-metallic material samples. The ignition source of the comparative test is a small flame with a nominal power of 5 W. The test sample is placed horizontally or vertically. In addition to determining the decay length of the sample, the above test method also determines the linear burning rate and afterflame/afterglow time of the released product. These test methods are applicable to solid materials and foam plastics with a timed apparent density of not less than 250 kg/m3 according to the method of ISO 0845. They are not applicable to materials that shrink but do not burn when exposed to fire. For thin and flexible materials, the method of ISO 9773 should be used. The classification and grading methods specified in this section (see 8.4 and 9.4) are applicable to quality assurance or for pre-selecting parts and components of products. These methods can only be used for pre-selecting materials when the thickness of the test piece is equal to the minimum thickness actually used and the results obtained are positive.
Note: The test results are affected by the composition and properties of the materials, such as colorants, fillers and flame retardants, and the direction and integrity of the anisotropy, etc. 2 Normative references
The clauses in the following documents become the clauses of this part through reference in this part of GB/T6169. For all dated referenced documents, all subsequent amendments (excluding errors) or revisions are not applicable to this part. However, the parties to an agreement based on this part are encouraged to study whether the latest versions of these documents can be used. For all undated referenced documents, the latest versions apply to this part.
GB/T5IG9.3—1997 Fire hazard testing for electrical and electronic products Part 2: Test methods Part 2 Needle flame test (idl1EC 60695-2.2:1991)
GB/T5169.17--2002/IEC60695-11-20:1999 Fire hazard tests for electric and electronic products Part 17: 500W flame test method IEC.60695-11-20:1999, IDT) ISO291:1997 Standard atmosphere for pretreatment of plastics ISO293:1986 Plastics - Compression moulding of thermoplastic test specimens ISO294 (all parts) Plastics - Injection moulding of thermoplastic test specimens ISO295:1991, Plastics - Compression moulding of thermosetting test specimens ISO845:1988 Foam plastics and foam rubber Determination of apparent (bulk) density ISO97731998 Determination of the burning characteristics of thin, flexible vertical test specimens when exposed to a small flame ignition source 1EC60695-11-4 Fire hazard tests Part 11-4: Test flame 50 W flame apparatus and confirmation test method 3 Terms and definitions
The following terms and definitions apply to this part of GR/T5169: 3.1
afterflame
The state of a material that continues to glow under specified test conditions after the ignition source is removed. CB/r5169.16—2002/1EC60695-11-10:1999 3.2
Afterflame time t1, t2 afterflame time t12 The period of time for which the afterflame persists.
Afterglow
The state of a material that continues to glow under specified test conditions after the flame has ceased (or after the ignition source has been removed if there is no flame) 3.4
Afterglow time t3afterglowtimetg
The period of time during which afterglow persists.
4 Principle
One end of the rectangular strip test specimen is clamped to make the specimen horizontal or vertical, and the free end is in contact with the specified test flame. The burning characteristics of the horizontally supported strip specimen are evaluated by measuring the linear burning rate, and the burning characteristics of the multiply supported strip specimen are evaluated by measuring the afterflame and afterglow time, the degree of combustion and dripping of the molten particles. 5 Significance of the test
5.1 Tests on materials under specified test conditions may be of considerable value in comparing the relative burning characteristics of different materials, controlling the manufacturing process or evaluating changes in burning properties. The test results obtained by these test methods depend on the shape and position of the test specimen and the environment in which the test specimen is used and the ignition conditions: The significant feature of these test methods is that the test specimen is arranged either in a horizontal or vertical position, which makes it possible to distinguish the flammability levels of various materials.
In test method A, horizontal burning HL, the horizontal position of the test specimen is particularly suitable for assessing the extent of burning and/or the rate of flame spread, i.e. the linear burning rate.
In test method B, vertical burning V, the vertical position of the test specimen is particularly suitable for assessing the extent of burning after the test flame is removed. NOTE 1: The test results of horizontal burning (HB) and vertical burning (V) are not equivalent. NOTE 2: The test results obtained by this method are equivalent to the test results obtained by the combustion tests 5VA and 5VB specified in GB/T 5169.17 because the intensity of the test fire is approximately 1/10 of the latter. 5.2 The results obtained according to this standard should not be used to describe or evaluate the fire hazard of special materials or special shapes under actual fire conditions. The evaluation of fire hazard requires consideration of the composition of the fuel, the intensity of the combustion (heat release rate), the combustion products and environmental factors, including the intensity of the ignition source, the location of the exposed material and the ventilation conditions. 5.3 The burning characteristics determined by these test methods are affected by factors such as material density, material anisotropy, and test specimen thickness.
5.4 Some test specimens may shrink or deform in the fire but not burn. In this case, additional test specimens are required to obtain valid test results. If valid test results are still not obtained, these test methods should be used for detailed evaluation. For some thin specimens that are prone to bending and for specimens with more than -10% shrink in the fire but do not burn, it is advisable to use IS(9773.5.5 The burning characteristics of some plastics may change with time. It is therefore advisable to age them by appropriate methods and to test them before and after aging. The preferred oven preconditioning should be at 70°C ± 2°C for 7 hours. Aging temperatures and aging times agreed upon by all parties may also be used, but this should be noted in the test report. 6 Test Apparatus
The test apparatus shall consist of the following parts:
61 Laboratory Ventilation Chamber
The laboratory ventilation chamber has a minimum internal volume of 0.5 m2. The test chamber shall have an observation window. The test chamber shall not be ventilated, but normal heat circulation of air shall be allowed to pass through the test specimen during combustion. The inner surface of the test chamber shall be dark. When a luminance meter is placed at the position of the test specimen and the light receiving part of the receiver is facing the rear of the test chamber, the indicated luminance level shall be less than 20Ix. For safety and convenience, this completely enclosed test chamber is equipped with an exhaust device, such as an exhaust fan, to exhaust possible toxic combustion products. This exhaust panel is closed during the test and opened after the test to exhaust the waste generated by the combustion. A forced-closed damper may be required. Note: It is generally considered useful to place a mirror in the test chamber to observe the back of the test specimen. 6-2 Laboratory blowtorches
Laboratory blowtorches shall comply with the requirements of flame A, B or C. in IFC. 60695-11-4. NOTE: IS(10093) describes a blowtorch for the P/PF2 (50 W) ignition source. 6.3 Ring stand
The ring stand shall have a clamp or similar device for adjusting the position of the test specimen (see Figures 1 and 3). 6.4 Timing device
The resolution of the timing device shall be at least 0.5 s. 6.5 Measuring ruler
The scale of the measuring ruler shall be in millimeters (mm). 6.6 Wire mesh
The wire mesh shall be 20 mesh, i.e. approximately 20 holes per 25 mm, made of steel wire with a diameter of 0.40 mm to 0.45 mm, and cut into squares of approximately 125 mm × 125 mm. 6.7 Pretreatment box
The temperature of the pretreatment box shall be maintained at 23°C ± 2 °C and the relative humidity shall be maintained at 50% ± 5%. 6.8 Dry scale
The resolution of the dry scale should be at least 0.01mm. 6.9 Support fixtures
Support fixtures shall be used to test non-self-supporting test specimens (see Figure 2). 6.10 Drying oven
The drying oven shall be equipped with anhydrous calcium chloride or other desiccant and be able to maintain a temperature of 23°C ± 2°C and a relative humidity not greater than 20%. 6.11 Air circulation oven
The air circulation oven shall be able to provide a processing temperature of 70°C ± 2°C and, unless otherwise specified in the relevant specifications, shall be 5 drinks per hour. 6.12 Cotton pads
The cotton pads shall be made of approximately 100% absorbent cotton. Note: This type of absorbent cotton is usually called surgical grade cotton wool. 7.1 The test samples shall be cut from representative molded parts of the product. If this is not possible, the same manufacturing process as the molded product parts shall be used to process these test samples. If this is still not possible, the appropriate method of ISO shall be used, i.e., injection molding and molding of ISO 294, compression molding or transfer molding of ISO 293 or ISO 295 to produce the necessary shape. If the test samples cannot be prepared by any of the above methods, the type test shall be carried out according to the needle flame test method of GB/T 5169.5. After the cutting operation, the edges of the cut shall be polished flat and smooth with fine sandpaper; all dust and particles shall be carefully removed from the surface. 7.2 The dimensions of the strip test samples are 125 mm ± 5 mm in length and 13 mm ± 0.5 mm in width, and the minimum and maximum thicknesses commonly used shall be provided. The thickness shall not be greater than 13 mm, the shuttle edge shall be smooth, and the angle radius shall not be greater than 1.3 mm. Other thicknesses may be used at the agreement of the parties concerned, but this shall be indicated in the test report (see Figure 4). NOTE 1 The tests may be different. Whether these tests are carried out depends on the test sample's hardness, density, molecular weight, direction of anisotropy, type and amount of pigment or filler and flame retardant used.
At least 6 strips shall be prepared for test method A and at least 20 for test method B. GB/T 5169.16—2002/IEC 60695-11-10; 1999 Principle 2: It is reasonable to prepare some additional specimens in case the situations described in 5.4, 3.2.10 or 9.2.6 occur. 8 Test Method A - Horizontal Burning Test
8.1 Preconditioning
Unless otherwise specified in the relevant specification, the following requirements shall apply: 8.1.1 The strip test specimens in groups of three shall be conditioned for at least 48 h at a temperature of 23°C ± 2°C and a relative humidity of 50% ± 5%. The test specimens shall be tested within 1 h after being removed from the conditioning chamber (6.7) (see ISO 291). 8.1.2 All test specimens shall be tested in a laboratory atmosphere of 15°C to 35°C and a relative humidity of 45% to 75%.
8.2 Test Procedure
8.2.1 Three test specimens shall be tested, and two straight lines perpendicular to the major axis of the strip specimen shall be drawn on each test specimen at 25 mm ± 1 mm and 100 mm ± 1 mm from the ignited end. 8.2.2 Clamp the test specimen at the end farthest from the 25 mm mark so that the long axis of the specimen lies horizontally and the transverse (minor) axis is tilted at a 45-degree angle, as shown in Figure 1. Place the wire mesh (see 6.6) horizontally below the specimen and clamp it so that the lowest edge of the test specimen is 10 mm ± 11 mm from the wire mesh and the white end is flush with the edge of the wire mesh. Any material remaining on the wire mesh from previous tests should be burned off, or a new wire mesh should be used for each test.
8.2.3 If the white end of the test specimen sags and cannot maintain the distance of 10 mm ± 1 mm specified in 8.2.2, the support fixture shown in Figure 2 (see 6.9) should be used. Place the support fixture horizontally on the wire mesh to support the test specimen to maintain a distance of 10 mm ± 1 mm. The extended part of the support fixture should be approximately 10 mm from the white end of the test specimen. Leave enough space at the clamping end of the test specimen to allow the support to move laterally from the ground.
8.2.4 Align the central axis of the blowtorch tube with the horizontal plane. Position the blowtorch away from the test specimen and adjust the blowtorch (see 6.2) to produce a standardized test flame with a nominal power of 50 W, i.e., flame A, B or C of IEC 60695-11-4. Wait for at least 5 min for the blowtorch to reach equilibrium. In case of dispute, flame A shall be used as the reference test flame. 8.2.5 Align the central axis of the blowtorch tube with the horizontal plane at an angle of approximately 43°. Position the test specimen at the lower end of the test specimen with the central axis of the blowtorch in the same vertical plane as the (long) bottom trace of the test specimen (see Figure 1). Apply the flame to the lowest edge of the test specimen. The blowtorch shall be positioned so that the main end of the specimen is approximately 6 mm deep into the flame. 82.6 As the flame front (see 8.2.5) slides forward on the test specimen, remove the support clips at approximately the same speed to prevent the flame from burning the support clips and causing any disturbance in the flame or in the burning of the test specimen. 8.2-7 The duration of the test flame application shall be either 309 + 1 without changing its position or the test flame shall be removed and applied as soon as the flame front of the test specimen reaches the 25 mm mark (if not less than 30). When the flame front reaches the 25 mm mark, start the timing device (see 6.4).
Note: It is assumed that the requirement is met when the torch is moved 15 mm away from the test specimen. 8.2.8 If the test specimen continues to burn after the test flame is removed, the elapsed time (in seconds) shall be recorded. If the flame front extends from the 25 mm mark through the 100 mm mark, the simulated burn length 1 shall be recorded as 75 mm. If the fire front crosses the 25 mm mark but not the 100 mm mark, record the elapsed time t in seconds (s) and the length of damage between the 25 mm mark and the point where the flame front stops in millimeters (mn). 8.2.9 Test two more test specimens.
8.2.10 If one of the three test specimens in the first set (see 7.2) does not meet the criteria given in 8.4.1 to 8.4.2, test another set of two test specimens. All test specimens in the second set shall meet all the criteria specified for the relevant category. 8.3 Calculation
8.3.1 For each test sample where the flame front passes the 100 mm marking line: calculate the linear burning rate using the following formula: V-60%
V.-Linear burning rate. Unit is millimetres per minute (mm/min) GB/T 5169.16-2002/IEC 60695-11-10:1999I--Damage length, unit is millimetres (mm). Is the value recorded in 8.2.8: --Time, unit is seconds (s); is the value recorded in 8.2.8 Note: The linear burning rate S1 unit is straight metres per second (m/s). In practice, the unit used is vertical metres per minute (mm/min) 8.4 Classification and grading
The materials should be classified as H1 or H75 according to the following rules. (HE stands for horizontal burning) B.4.1 Materials classified as HB40 shall meet the following criteria: a) There shall be no obvious flame burning after the ignition source is removed. b) If the test sample continues to burn with flames after the ignition source is removed, the flame front shall not pass the 100 mm mark. c) If the flame front passes the 100 mm mark, the linear burning rate shall not be greater than 4 om/min. 8.4.2 For materials classified as HB75, even if the flame front passes the 100 mm mark, the linear burning rate shall not be greater than ?5 mm/min.
8. 5 Test report
The test report shall include the following items:
a) Reference to this part of GB/T 516.
6) All the details necessary to identify the product under test, including the manufacturer's name, product number or code, product color, etc. Thickness of the test sample, accurate to 0.1 mm, d) Nominal apparent density (only applicable to rigid foam plastics) e) Anisotropic forces related to the size of the test sample. 1 Pretreatment.
) Treatment before the test, not cutting, trimming and pretreatment. h) Instructions on whether the test sample continues to burn with flames after the test flame is applied, and whether the flame front crosses the 25 mm and 100 mm marking lines. 1
For test samples where the flame front passes the 25 mm marking line but does not pass the 1(60 mm marking line), the time the flame passes and the length of the ring L
k! For test samples where the flame front reaches or passes the 100 mm marking line, an indication of the linear burning rate V1) Whether any burning particles or drops fall from the test sample. m) Is it convenient to use a flexible sample to support the clamping. n) is determined to be what level (see 8.4),
9 Test method B - Vertical burning test
9.1 Pretreatment
Unless otherwise required by the relevant specification, the following conditions shall be used: 9.1.1 A set of 10,000 bar test specimens shall be conditioned for at least 48 h at 23°C ± 2°C and 50% ± 5% relative humidity. Once the test specimens have been removed from the preconditioning chamber (see 6.7), they shall be tested within 1 h (see ISO 291). 9.1.2 Aging the set of 10,000 bar test specimens in an air-circulating oven (see 6.11) at 70°C ± 2°C for 168 h ± 2 h and then cooled in a media oven (see 6.10) for at least 4 h. Once the test specimens have been removed from the oven, they shall be tested within 30 min. 9.1.3 All test specimens shall be tested in a laboratory atmosphere of 15 to 35°C and 45% to 75% relative humidity. 9.2 Test procedure
9.2.1 Hold the test sample vertically with 6 mm of the upper end so that the lower end of the test sample is on the cotton pad with a thickness of 1:300 mm ± 10 mm. The size of the cotton pad is about 50 mm × 0 mm × mm (uncompacted thickness) and the maximum weight is 0.08 g (see Figure 3).
GB/T 5169. 162002/[EC 60695-11-10; 19999.2.2 Make the center line of the blowtorch tube vertical and place the blowtorch away from the test sample. Make the blowtorch (see 6.2) produce a standardized test flame with a nominal power of 50 W, which is in accordance with flame A, B or C of IEC 60695-11-4. Wait for 5 min for the blowtorch to stabilize. In case of dispute, a flame should be used as the artificial basis for the test flame. 9.2.3 Keep the central axis of the blowtorch tube in a vertical position. It is important to apply the test flame to the midpoint of the bottom edge of the test sample. To this end, make the end of the blowtorch 1 mm above 10 mm below the midpoint and maintain this distance for 10 s ± 0.5 8. If necessary, the blowtorch can be moved in the vertical plane as the position or length of the test sample changes. NOTE 1 For some test specimens which are moved under the action of the blowtorch flame, it is considered satisfactory to maintain the distance between the tip of the blowtorch and the unused portion of the test specimen at 10 mm, as in IEC 60695-11-1, by means of a small ruler fixed to the blowtorch (see Figure 5). If the test specimen drops molten or burning material during the application of the flame, the blowtorch is tilted to an angle of 45°, just enough to be withdrawn from under the test specimen to prevent material from being caught in the burner's flames, while maintaining a distance of 10 mm ± 1 mm between the centre of the burner's burner and the remaining portion of the test specimen (the portion of the runner-off of molten material). Full withdrawal of the blowtorch immediately after the test specimen has been ignited for 10 s ± 0.5 s has no effect on the specimen. At the same time, start measuring the raffination time t (in seconds (s)) using a timing device and record it.
Note 2: It is generally considered that it is best to keep the blowtorch 150 m away from the test sample during the measurement period. 9.2.4 When the afterflame of the test sample stops, place the test fuse under the test sample in its original position, with the central axis of the blowtorch tube maintained in a vertical position. The top of the blowtorch is 10 m below the bottom edge of the test sample. Maintain for 10 s. If necessary, move the blowtorch as described in 9.2.3 to remove fallen material. After the second flame is applied to the test sample for 10 s. 1.0.5 8, immediately extinguish the blowtorch or move the blowtorch far enough away from the test sample so that it has no impact on the test sample. At this time, use the timing device to begin measuring the afterflame time (accurate to t(s)) and afterglow time of the test specimen, record t2t and (t+). Also note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: Then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:. It has proven appropriate to move the blowtorch 150 m higher than the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five test specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteristics of the test samples, the materials should be classified into V-(, VI or V-2 according to the criteria shown in Table 1, where V stands for vertical burning.
Criteria
Afterflame time of single test sample (z, rent t) For any pretreatment, the total afterflame time t
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Table 1 Classification of vertical burning
Afterflame time of single test sample plus afterburning time (t:++) for the second application of flame
Does the afterflame and (or) afterburning spread to the clamping fixture? Does the burning particles or droplets ignite the cotton pad? 230 s
If the test results do not meet the specified judgment criteria, this test method cannot be used to classify this material. Instead, the water P combustion test method described in Chapter 8 should be used to classify the combustion characteristics of this material. 9.5 Test report
The test report should include the following items:
a) Reference to this part of GB/T5169;
All information necessary to identify the tested product. Including the name of the manufacturer, product number or code to change the product color; b
The thickness of the test sample. Accurate to 0.1 mm; nominal apparent density (applicable only to rigid foam plastics); direction of anisotropy related to the size of the test sample: e)
pretreatment;
treatment before the test, does not refer to scoring, trimming of burrs and pretreatment; t2, t: and (t: +) values of each test sample: h)
i) total afterflame time t of each set of five test samples after secondary pretreatment (see 9.1.1 and 9.1.2);) record of whether the test sample drops any burning whip particles and whether the cotton pad is ignited, k) record of whether the test sample burns to the supporting fixture: 1) what category it belongs to (see 9.4).
Note: As a result of the vertical burning (V) test described in Chapter 9, if the test specimen becomes thin, deformed, curled or burns to the point where only the clamps can be held, the material may be subjected to the horizontal burning (HB) test described in Chapter 8 or the vertical burning test for deformed materials specified in ISO9773 GB/T 5169.16 2002/IEC 60695-11-10:19991
Test sample
Wire mesh
Test flame
Test product
Metallic mesh
Figure 1 Horizontal combustion test device
10.5±0.1
10.5±0.1
View
Required sample thickness
Unit: millimeter
Test flame
Unit: meter
S-sample thickness.
Acid flame test,
GB/T5169.16—2002/1EC60695-11-10:1999The unit is meter
Test sample
10±4
300±10
Figure 3 Vertical combustion test device
125 ±5
Figure 4 Strip test sample
Method B
The unit is meterThe test should be carried out within 30 minutes. 9.1.3 All test samples should be tested in the test room atmosphere of 15-35°C and 45%-75% relative humidity. 9.2 Test procedure
9.2.1 Use the length of 6 mm of the upper end of the test sample to hold the test sample vertically so that the lower end of the test sample is on the cotton pad with a diameter of 1:300mm ± 10tmm. The size of the cotton pad is about 50mm×0mm×mm (uncompacted thickness) and the maximum weight is 0.08g (see Figure 3).
GB/T 5169.162002/[EC 60695-11-10; 19999.2.2 Make the center line of the blowtorch tube vertical and place the blowtorch away from the test sample. The blowtorch (see 6.2) is made to produce a standardised test flame of nominal 50 W, corresponding to flame A, B or C of IEC 60695-11-4. Wait 5 min for the blowtorch to reach a stable state. In case of dispute, the flame should be artificially based on the test flame. 9.2.3 The central axis of the blowtorch tube is kept in a vertical position. It is important to apply the test flame to the midpoint of the bottom edge of the test specimen. To this end, the end of the blowtorch is 1 mm below 10 mm of the midpoint and maintained at this distance for 10 s ± 0.5 8. The blowtorch can be moved in this vertical plane as necessary as the position or length of the test specimen changes. NOTE 1 For some test specimens which are moved under the action of the blowtorch flame, it is considered satisfactory to maintain the distance between the tip of the blowtorch and the unused portion of the test specimen at 10 mm, as in IEC 60695-11-1, by means of a small ruler fixed to the blowtorch (see Figure 5). If the test specimen drops molten or burning material during the application of the flame, the blowtorch is tilted to an angle of 45°, just enough to be withdrawn from under the test specimen to prevent material from being caught in the burner's flames, while maintaining a distance of 10 mm ± 1 mm between the centre of the burner's burner and the remaining portion of the test specimen (the portion of the runner-off of molten material). Full withdrawal of the blowtorch immediately after the test specimen has been ignited for 10 s ± 0.5 s has no effect on the specimen. At the same time, start measuring the raffination time t (in seconds (s)) using a timing device and record it.
Note 2: It is generally considered that it is best to keep the blowtorch 150 m away from the test sample during the measurement period. 9.2.4 When the afterflame of the test sample stops, place the test fuse under the test sample in its original position, with the central axis of the blowtorch tube maintained in a vertical position. The top of the blowtorch is 10 m below the bottom edge of the test sample. Maintain for 10 s. If necessary, move the blowtorch as described in 9.2.3 to remove fallen material. After the second flame is applied to the test sample for 10 s. 1.0.5 8, immediately extinguish the blowtorch or move the blowtorch far enough away from the test sample so that it has no impact on the test sample. At this time, use the timing device to begin measuring the afterflame time (accurate to t(s)) and afterglow time of the test specimen, record t2t and (t+). Also note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: Then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:. It has proven appropriate to move the blowtorch 150 m higher than the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five test specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteristics of the test samples, the materials should be classified into V-(, VI or V-2 according to the criteria shown in Table 1, where V stands for vertical burning.
Criteria
Afterflame time of single test sample (z, rent t) For any pretreatment, the total afterflame time t
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Table 1 Classification of vertical burning
Afterflame time of single test sample plus afterburning time (t:++) for the second application of flame
Does the afterflame and (or) afterburning spread to the clamping fixture? Does the burning particles or droplets ignite the cotton pad? 230 s
If the test results do not meet the specified judgment criteria, this test method cannot be used to classify this material. Instead, the water P combustion test method described in Chapter 8 should be used to classify the combustion characteristics of this material. 9.5 Test report
The test report should include the following items:
a) Reference to this part of GB/T5169;
All information necessary to identify the tested product. Including the name of the manufacturer, product number or code to change the product color; b
The thickness of the test sample. Accurate to 0.1 mm; nominal apparent density (applicable only to rigid foam plastics); direction of anisotropy related to the size of the test sample: e)
pretreatment;
treatment before the test, does not refer to scoring, trimming of burrs and pretreatment; t2, t: and (t: +) values of each test sample: h)
i) total afterflame time t of each set of five test samples after secondary pretreatment (see 9.1.1 and 9.1.2);) record of whether the test sample drops any burning whip particles and whether the cotton pad is ignited, k) record of whether the test sample burns to the supporting fixture: 1) what category it belongs to (see 9.4).
Note: As a result of the vertical burning (V) test described in Chapter 9, if the test specimen becomes thin, deformed, curled or burns to the point where only the clamps can be held, the material may be subjected to the horizontal burning (HB) test described in Chapter 8 or the vertical burning test for deformed materials specified in ISO9773 GB/T 5169.16 2002/IEC 60695-11-10:19991
Test sample
Wire mesh
Test flame
Test product
Metallic mesh
Figure 1 Horizontal combustion test device
10.5±0.1
10.5±0.1
View
Required sample thickness
Unit: millimeter
Test flame
Unit: meter
S-sample thickness.
Acid flame test,
GB/T5169.16—2002/1EC60695-11-10:1999The unit is meter
Test sample
10±4
300±10
Figure 3 Vertical combustion test device
125 ±5
Figure 4 Strip test sample
Method B
The unit is meterThe test should be carried out within 30 minutes. 9.1.3 All test samples should be tested in the test room atmosphere of 15-35°C and 45%-75% relative humidity. 9.2 Test procedure
9.2.1 Use the length of 6 mm of the upper end of the test sample to hold the test sample vertically so that the lower end of the test sample is on the cotton pad with a diameter of 1:300mm ± 10tmm. The size of the cotton pad is about 50mm×0mm×mm (uncompacted thickness) and the maximum weight is 0.08g (see Figure 3).
GB/T 5169.162002/[EC 60695-11-10; 19999.2.2 Make the center line of the blowtorch tube vertical and place the blowtorch away from the test sample. The blowtorch (see 6.2) is made to produce a standardised test flame of nominal 50 W, corresponding to flame A, B or C of IEC 60695-11-4. Wait 5 min for the blowtorch to reach a stable state. In case of dispute, the flame should be artificially based on the test flame. 9.2.3 The central axis of the blowtorch tube is kept in a vertical position. It is important to apply the test flame to the midpoint of the bottom edge of the test specimen. To this end, the end of the blowtorch is 1 mm below 10 mm of the midpoint and maintained at this distance for 10 s ± 0.5 8. The blowtorch can be moved in this vertical plane as necessary as the position or length of the test specimen changes. NOTE 1 For some test specimens which are moved under the action of the blowtorch flame, it is considered satisfactory to maintain the distance between the tip of the blowtorch and the unused portion of the test specimen at 10 mm, as in IEC 60695-11-1, by means of a small ruler fixed to the blowtorch (see Figure 5). If the test specimen drops molten or burning material during the application of the flame, the blowtorch is tilted to an angle of 45°, just enough to be withdrawn from under the test specimen to prevent material from being caught in the burner's flames, while maintaining a distance of 10 mm ± 1 mm between the centre of the burner's burner and the remaining portion of the test specimen (the portion of the runner-off of molten material). Full withdrawal of the blowtorch immediately after the test specimen has been ignited for 10 s ± 0.5 s has no effect on the specimen. At the same time, start measuring the raffination time t (in seconds (s)) using a timing device and record it.
Note 2: It is generally considered that it is best to keep the blowtorch 150 m away from the test sample during the measurement period. 9.2.4 When the afterflame of the test sample stops, place the test fuse under the test sample in its original position, with the central axis of the blowtorch tube maintained in a vertical position. The top of the blowtorch is 10 m below the bottom edge of the test sample. Maintain for 10 s. If necessary, move the blowtorch as described in 9.2.3 to remove fallen material. After the second flame is applied to the test sample for 10 s. 1.0.5 8, immediately extinguish the blowtorch or move the blowtorch far enough away from the test sample so that it has no impact on the test sample. At this time, use the timing device to begin measuring the afterflame time (accurate to t(s)) and afterglow time of the test specimen, record t2t and (t+). Also note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: Then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:. It has proven appropriate to move the blowtorch 150 m higher than the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five test specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteristics of the test samples, the materials should be classified into V-(, VI or V-2 according to the criteria shown in Table 1, where V stands for vertical burning.
Criteria
Afterflame time of single test sample (z, rent t) For any pretreatment, the total afterflame time t
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Table 1 Classification of vertical burning
Afterflame time of single test sample plus afterburning time (t:++) for the second application of flame
Does the afterflame and (or) afterburning spread to the clamping fixture? Does the burning particles or droplets ignite the cotton pad? 230 s
If the test results do not meet the specified judgment criteria, this test method cannot be used to classify this material. Instead, the water P combustion test method described in Chapter 8 should be used to classify the combustion characteristics of this material. 9.5 Test report
The test report should include the following items:
a) Reference to this part of GB/T5169;
All information necessary to identify the tested product. Including the name of the manufacturer, product number or code to change the product color; b
The thickness of the test sample. Accurate to 0.1 mm; nominal apparent density (applicable only to rigid foam plastics); direction of anisotropy related to the size of the test sample: e)
pretreatment;
treatment before the test, does not refer to scoring, trimming of burrs and pretreatment; t2, t: and (t: +) values of each test sample: h)
i) total afterflame time t of each set of five test samples after secondary pretreatment (see 9.1.1 and 9.1.2);) record of whether the test sample drops any burning whip particles and whether the cotton pad is ignited, k) record of whether the test sample burns to the supporting fixture: 1) what category it belongs to (see 9.4).
Note: As a result of the vertical burning (V) test described in Chapter 9, if the test specimen becomes thin, deformed, curled or burns to the point where only the clamps can be held, the material may be subjected to the horizontal burning (HB) test described in Chapter 8 or the vertical burning test for deformed materials specified in ISO9773 GB/T 5169.16 2002/IEC 60695-11-10:19991
Test sample
Wire mesh
Test flame
Test product
Metallic mesh
Figure 1 Horizontal combustion test device
10.5±0.1
10.5±0.1
View
Required sample thickness
Unit: millimeter
Test flame
Unit: meter
S-sample thickness.
Acid flame test,
GB/T5169.16—2002/1EC60695-11-10:1999The unit is meter
Test sample
10±4
300±10
Figure 3 Vertical combustion test device
125 ±5
Figure 4 Strip test sample
Method B
The unit is meter3 The central axis of the burner tube is maintained in a vertical position. It is important that the test flame be applied at the midpoint of the bottom edge of the test specimen. To this end the tip of the burner is 1 mm below 10 mm of the midpoint and this distance is maintained for 10 s ± 0.5 8. The burner may be moved in this vertical plane as necessary to accommodate changes in the position or length of the test specimen. NOTE 1 For some test specimens that are moved under the influence of the burner flame, it is considered satisfactory to maintain the distance between the tip of the burner and the residual part of the test specimen at 10 mm using a small ruler fixed to the burner (see Figure 5) as in IEC 60695-11. If the test specimen drops molten or burning material during the application of the flame, the burner is tilted to an angle of 45°, just enough to be drawn out from under the test specimen to prevent material from entering the burner's burning zone. At the same time, the distance between the centre of the burner's burner and the residual part of the test specimen (technically the cast part of the molten material) is maintained at 10 mm ± 1 mm. After the test sample has been ignited for 10 s ± 0.5 s, the blowtorch is immediately and completely withdrawn without any effect on the sample. At the same time, the timing device is used to start measuring the residual time t (in seconds (s)) and record it.
Note 2: It is generally considered that it is best to keep the blowtorch 150 m away from the test sample during the measurement period. 9.2.4 When the residual flame of the test sample stops, place the test torch on its original position under the test sample, with the central axis of the blowtorch tube maintained in a vertical position, and the top of the blowtorch 10 m ± 1 [1] below the residual edge of the test sample. Maintain for 10 s ± 0.56. If necessary, move the blowtorch as described in 9.2.3 to remove fallen material. After the second flame is applied to the test sample for 10 s ± 0.5 8, immediately extinguish the blowtorch or move the blowtorch far enough away from the test sample so that it will not have any effect on the test sample. At this time, use the timing device to begin measuring the afterflame time (accurate to t(s)) and afterglow time of the test specimen, record t2t and (t+). Also note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: Then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:. It has proven appropriate to move the blowtorch 150 m higher than the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five test specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteristics of the test samples, the materials should be classified into V-(, VI or V-2 according to the criteria shown in Table 1, where V stands for vertical burning.
Criteria
Afterflame time of single test sample (z, rent t) For any pretreatment, the total afterflame time t
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Table 1 Classification of vertical burning
Afterflame time of single test sample plus afterburning time (t:++) for the second application of flame
Does the afterflame and (or) afterburning spread to the clamping fixture? Does the burning particles or droplets ignite the cotton pad? 230 s
If the test results do not meet the specified judgment criteria, this test method cannot be used to classify this material. Instead, the water P combustion test method described in Chapter 8 should be used to classify the combustion characteristics of this material. 9.5 Test report
The test report should include the following items:
a) Reference to this part of GB/T5169;
All information necessary to identify the tested product. Including the name of the manufacturer, product number or code to change the product color; b
The thickness of the test sample. Accurate to 0.1 mm; nominal apparent density (applicable only to rigid foam plastics); direction of anisotropy related to the size of the test sample: e)
pretreatment;
treatment before the test, does not refer to scoring, trimming of burrs and pretreatment; t2, t: and (t: +) values of each test sample: h)
i) total afterflame time t of each set of five test samples after secondary pretreatment (see 9.1.1 and 9.1.2);) record of whether the test sample drops any burning whip particles and whether the cotton pad is ignited, k) record of whether the test sample burns to the supporting fixture: 1) what category it belongs to (see 9.4).
Note: As a result of the vertical burning (V) test described in Chapter 9, if the test specimen becomes thin, deformed, curled or burns to the point where only the clamps can be held, the material may be subjected to the horizontal burning (HB) test described in Chapter 8 or the vertical burning test for deformed materials specified in ISO9773 GB/T 5169.16 2002/IEC 60695-11-10:19991
Test sample
Wire mesh
Test flame
Test product
Metallic mesh
Figure 1 Horizontal combustion test device
10.5±0.1
10.5±0.1
View
Required sample thickness
Unit: millimeter
Test flame
Unit: meter
S-sample thickness.
Acid flame test,
GB/T5169.16—2002/1EC60695-11-10:1999The unit is meter
Test sample
10±4
300±10
Figure 3 Vertical combustion test device
125 ±5
Figure 4 Strip test sample
Method B
The unit is meter3 The central axis of the burner tube is maintained in a vertical position. It is important that the test flame be applied at the midpoint of the bottom edge of the test specimen. To this end the tip of the burner is 1 mm below 10 mm of the midpoint and this distance is maintained for 10 s ± 0.5 8. The burner may be moved in this vertical plane as necessary to accommodate changes in the position or length of the test specimen. NOTE 1 For some test specimens that are moved under the influence of the burner flame, it is considered satisfactory to maintain the distance between the tip of the burner and the residual part of the test specimen at 10 mm using a small ruler fixed to the burner (see Figure 5) as in IEC 60695-11. If the test specimen drops molten or burning material during the application of the flame, the burner is tilted to an angle of 45°, just enough to be drawn out from under the test specimen to prevent material from entering the burner's burning zone. At the same time, the distance between the centre of the burner's burner and the residual part of the test specimen (technically the cast part of the molten material) is maintained at 10 mm ± 1 mm. After the test sample has been ignited for 10 s ± 0.5 s, the blowtorch is immediately and completely withdrawn without any effect on the sample. At the same time, the timing device is used to start measuring the residual time t (in seconds (s)) and record it.
Note 2: It is generally considered that it is best to keep the blowtorch 150 m away from the test sample during the measurement period. 9.2.4 When the residual flame of the test sample stops, place the test torch on its original position under the test sample, with the central axis of the blowtorch tube maintained in a vertical position, and the top of the blowtorch 10 m ± 1 [1] below the residual edge of the test sample. Maintain for 10 s ± 0.56. If necessary, move the blowtorch as described in 9.2.3 to remove fallen material. After the second flame is applied to the test sample for 10 s ± 0.5 8, immediately extinguish the blowtorch or move the blowtorch far enough away from the test sample so that it will not have any effect on the test sample. At this time, use the timing device to begin measuring the afterflame time (accurate to t(s)) and afterglow time of the test specimen, record t2t and (t+). Also note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: Then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:. It has proven appropriate to move the blowtorch 150 m higher than the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five test specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteristics of the test samples, the materials should be classified into V-(, VI or V-2 according to the criteria shown in Table 1, where V stands for vertical burning.
Criteria
Afterflame time of single test sample (z, rent t) For any pretreatment, the total afterflame time t
GB/T 5169. 16--2002/IEC 60695-11-10: 1999 Table 1 Classification of vertical burning
Afterflame time of single test sample plus afterburning time (t:++) for the second application of flame
Does the afterflame and (or) afterburning spread to the clamping fixture? Does the burning particles or droplets ignite the cotton pad? 230 s
If the test results do not meet the specified judgment criteria, this test method cannot be used to classify this material. Instead, the water P combustion test method described in Chapter 8 should be used to classify the combustion characteristics of this material. 9.5 Test report
The test report should include the following items:
a) Reference to this part of GB/T5169;
All information necessary to identify the tested product. Including the name of the manufacturer, product number or code to change the product color; b
The thickness of the test sample. Accurate to 0.1 mm; nominal apparent density (applicable only to rigid foam plastics); direction of anisotropy related to the size of the test sample: e)
pretreatment;
treatment before the test, does not refer to scoring, trimming of burrs and pretreatment; t2, t: and (t: +) values of each test sample: h)
i) total afterflame time t of each set of five test samples after secondary pretreatment (see 9.1.1 and 9.1.2);) record of whether the test sample drops any burning whip particles and whether the cotton pad is ignited, k) record of whether the test sample burns to the supporting fixture: 1) what category it belongs to (see 9.4).
Note: As a result of the vertical burning (V) test described in Chapter 9, if the test specimen becomes thin, deformed, curled or burns to the point where only the clamps can be held, the material may be subjected to the horizontal burning (HB) test described in Chapter 8 or the vertical burning test for deformed materials specified in ISO9773 GB/T 5169.16 2002/IEC 60695-11-10:19991
Test sample
Wire mesh
Test flame
Test product
Metallic mesh
Figure 1 Horizontal combustion test device
10.5±0.1
10.5±0.1
View
Required sample thickness
Unit: millimeter
Test flame
Unit: meter
S-sample thickness.
Acid flame test,
GB/T5169.16—2002/1EC60695-11-10:1999The unit is meter
Test sample
10±4
300±10
Figure 3 Vertical combustion test device
125 ±5
Figure 4 Strip test sample
Method B
The unit is meter5 8 Immediately after this, extinguish the blowtorch or move it far enough away from the test specimen so that it has no effect on the test specimen. At the same time, begin measuring the afterflame time (to the nearest second) and the afterglow time of the test specimen using the timing device, record t2t and (t+), and note whether any particles have fallen from the test specimen and, if so, whether these particles have ignited the flame (see 6.12). Measure and record the afterflame time t: and then continue to measure the afterflame time t: and the afterglow time t: (without resetting the timing device). It is more convenient to record t:, and it has proven appropriate to move the blowtorch 150 m above the test specimen when t: and t: are displayed. 9.2.5 Repeat the procedure until all five specimens treated in accordance with 9.1.1 and all five specimens treated in accordance with 9.1.2 have been tested.
9.2.6 For pre-treated specimens, if one of the five test specimens meets all the criteria for one category, an additional set of five specimens that have been subjected to the same treatment shall be tested. For the total number of seconds of the mixed melting time, if the sum of the afterflame times is within the range of 51 s to 55 s for V-1 and 251 s to 255 s for V-2, an additional set of test specimens shall be tested. All test specimens in the first set shall meet all the criteria for that category. 9.3 Calculation of
For the two sets of pre-treated test specimens, calculate the total afterflame time for each set. The calculation formula is as follows: Sa.+t
Where.
t:--total afterflame time, in seconds (s); t:.the first afterflame time of the :th test sample, in seconds (s); ---the second afterflame time of the 1st test sample, in seconds (s). 9.4 Classification and grading
Based on the characteri
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