Some standard content:
GB8965-1998
This standard is revised according to the 1995 national standard formulation and revision project plan of the State Technical Supervision Bureau.
The technical indicators of this standard are revised with reference to the relevant standards of the International Organization for Standardization and other developed countries and in combination with the actual situation in my country. The following changes have been made to the technical content of this standard: 1. This standard has made some changes in the description method of the flame retardancy of clothing materials, and the test indicators have been improved. 2. This standard adopts ISO10528:1995 "Textiles-Commercial Washing Procedures for Fabrics Before Burning Tests" to standardize the test method for flame retardancy and washing resistance.
3. This standard adds the strength, moisture permeability, stiffness, shrinkage, color, toxicity of clothing materials, and the strength and flame retardancy of sewing threads.
4. This standard refers to GB/T14645--93 "Determination of Damage Area and Flame Contact Times in the 45° Direction of Textile Fabrics Burning Performance" to formulate the flame contact times test method for sewing threads.
Appendix A and Appendix B of this standard are the appendices of the standard. This standard shall replace GB8965-88 from the date of entry into force. This standard is proposed by the Ministry of Labor of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Labor Protection Products. This standard was drafted by the Military Equipment Research Institute of the General Logistics Department of the Petroleum Corporation and the Safety and Environmental Protection Research Institute of the Ministry of Metallurgical Industry. The main drafters of this standard are Wei Zhiguo, Xu Yuqin, Yang Tingxin, Cai Mingyi and Zhang Jianchun. 123
1 Scope
National Standard of the People's Republic of China
Flame-retardant protective clothing
Flame-retardant protective clothingGB8965
Replaces GB8965-88
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of flame-retardant protective clothing (hereinafter referred to as flame-retardant clothing).
This standard applies to flame retardant clothing worn by workers who are engaged in work with open flames, sparks, near molten metals, and in places with flammable substances and fire hazards.
2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB282887 Batch inspection counting sampling procedure and sampling table (applicable to continuous batch inspection) GB2829-87 Periodic inspection counting sampling procedure and sampling table (applicable to the inspection of production process stability) GB/T3916-1997 Textiles - Determination of breaking strength and elongation at break of single yarn in packaged yarn GB/T3917.3-1997 Tear properties of textile fabrics - Part 3: Determination of tear strength of trapezoidal test specimens GB/T3923.1-1997 Tensile properties of textile fabrics - Part 1: Determination of breaking strength and elongation at break - Strip specimens
GB 4288---- 92
Household electric washing machines
GB545585
Determination of flame retardancy of textile fabrics-Vertical method
GB5457--85Glossary of burning behaviour of textiles and textile productsGB6529
86Standard atmospheres for conditioning and testing textilesGB8630-88Determination of dimensional changes of textiles during washing and dryingGB/T13171-1997Washing powder
GB13640-91
Labour protective clothing models
GB/T12704--91Determination of water vapor permeability of fabrics-Water vapor permeability cup methodGB/T12903·91Terminology of personal protective equipmentFZ/T81007-1994Men's and women's single garments
3Definitions
This standard adopts the definitions in GB/T12903, GB5457 and the following definitions. 3.1 Flame-retardant protective clothing Flame-retardant protective clothing Protective clothing that can prevent itself from being ignited, burning with flames and smoldering after contact with flames and hot objects. 3.2 Afterflame time
Under specified test conditions, the time that the material continues to burn with flames after the ignition source is removed (also known as the flaming combustion period). Approved by the State Administration of Quality and Technical Supervision on September 9, 1998 124
Implementation on August 1, 1999
3.3 Afterglow time
GB 8965 - 1998
Under specified test conditions, the time that the material continues to burn without flames (also known as the smoldering period) after the flaming combustion stops or the ignition source is removed.
3.4 Damage length
Under specified test conditions, the maximum length of the damaged area of the material in the specified direction. 3.5 Ignition times
Under the specified test conditions, the number of times the sample needs to contact the flame at a distance of 90mm from the lower end for the sample to ignite and burn. 4 Requirements
4.1 Materials
4. 1. 1 Clothing
4.1.1.1 Flame retardancy
When tested according to 5.1, the flame retardancy of the clothing before washing and after washing 12 times shall meet the requirements of Table 1. Table 1 Flame retardancy performance indicators of clothing
Test parameters
Afterflaming time, s
Smoldering time, s
Damage length, mm
Melting, dripping
4.1.1.2 Strength
When tested according to 5.2, the warp and weft breaking strength of the clothing shall not be less than 450N, and the warp and weft tearing strength shall not be less than 25N. 4.1.1.3 Moisture permeability
When tested according to 5.3, the moisture permeability of the fabric should be greater than 4000g/m2, 24h). 4.1.1.4 Stiffness
When tested according to 5.4, the total average bending length of the fabric in the warp and weft directions shall not exceed 4.8cm. 4.1.1.5 Shrinkage, color
When tested according to 5.5, the shrinkage of the fabric in the warp and weft directions shall not exceed 2.5%. The color of the fabric shall be selected according to the use requirements, and its color difference and color fastness shall comply with the requirements of relevant national standards. 4.1.1.6 Toxicity
No skin allergic reaction.
4.1.2 Sewing thread
4.1.2.1 Strength
When tested according to 5.6, the single thread strength shall not be less than 8N. 4.1.2.2 Flame retardancy
When tested according to 5.7, the flame retardancy of sewing thread before washing and after washing 12 times shall meet the requirements of Table 2. Table 2 Flame retardancy performance index of sewing thread
Test parameters
Number of flame exposure
4.1.2.3 Color
GB 8965--1998
The color of sewing thread shall match the color of clothing, and the color fastness shall meet the requirements of relevant national standards. 4.1.3 Accessories
Buckles and hooks shall be easy to connect and release. The material of buckles and hooks shall not be fusible or flammable. If they must be used, the surface shall be covered with flame retardant clothing.
4.2 Clothing
4.2.1 Style
According to the use requirements, the following styles can be adopted: 4.2.1.1 Upper and lower body separated style.
4.2.1.2 One-piece clothing (hat),
4.2.1.3 Coat, vest, bib, apron, friend's clothing, etc. 4.2.2 Size setting
The size of clothing shall be selected by yourself in accordance with GB13640. The finished product specification measurement and the allowable tolerance of each main part shall comply with the provisions of FZ/T81007.
4.2.3 Structure
4.2.3.1 Safe, beautiful, and conducive to the normal physiological requirements and health of the human body. 4.2.3.2 Adapt to the limbs movement during operation and easy to put on and take off. 4.2.3.3 The pockets should have a cover to avoid the accumulation of splashing molten metal or sparks. 4.2.3.4 It is not easy to cause hooking, hanging, twisting, and grinding during operation. 4.2.3.5 Ventilation holes can be left in appropriate places to ventilate sweat and moisture to regulate body temperature. However, the ventilation holes shall not affect the structural strength of the garment, and the hole structure shall not allow external objects to enter the garment. 4.2.4 Sewing Processing
4.2.4.1 Stitch Density
a) Visible thread: 14 to 18 stitches per 3cm, including hidden thread without visible thread. b) Three-thread overlock: 3cm not less than 9 stitches.
c) Buttonhole fine thread 1214 stitches per 1cm2;
thick thread 1cm not less than 9 stitches.
d) Buttoning: fine thread each eye not less than 8 threads; thick thread each eye not less than 4 threads.
4.2.4.2 Sewing Process
4.2.4.2.1 The stitching of each part should be straight, neat, firm, and of appropriate tightness. 4.2.4.2.2. The thread and stitches should be neat, without obvious bends or piles, skipped stitches, open threads or broken threads. 4.2.4.2.3 Double stitches are used for the underarms, crotch and other areas prone to cracking. 4.2.4.2.4 The four-piece buttons are firmly nailed and easy to close. The buttons are firmly nailed, and the needle and thread must penetrate the fabric layer. The needle and thread of the four-hole button should be parallel and tied firmly at the beginning and end.
4.2.4.2.5 The buttonholes should be even and complete, the button and eye are opposite, and the buttonholes are open. 4.2.5 Appearance
4.2.5.1 Ironing is smooth, folding is correct, neat and beautiful, and there should be no sweat ulcers, defects or other defects that damage the appearance. 4.2.5.2 The collar is half-dressed, not turned up,
4.2.5.3 Symmetrical difference: the symmetric difference between the placket, sleeve length, cuffs, trouser length, trouser legs and trouser placket should not exceed 0.4cm. 5 Test methods
5.1 The tests on the after-flaming time, smoldering time, damaged length, melting or dripping of fabrics shall be carried out in accordance with the provisions of GB5455; the washing method shall be carried out in accordance with the provisions of Appendix A.
GB8965-1998
5.2 The breaking strength test of fabrics shall be carried out in accordance with the provisions of GB3923.1, and the tearing strength test shall be carried out in accordance with the provisions of GB3917. 5.3 The moisture permeability test of fabrics shall be carried out in accordance with the provisions of GB/T12704 Method B. 5.4 Fabric stiffness test
5.4.1 Principle
According to the principle that the greater the bending stiffness, the more difficult it is to bend, the sample is placed flat on a platform with a fixed angle inclined plane detection line at the front end as a uniformly distributed load cantilever beam and pushed out. It bends and droops due to its own weight. The extended length is measured when it touches the inclined plane detection line, and the fabric bending length and bending stiffness are calculated to determine the fabric stiffness.
5.4.2 Fabric Stiffness Tester
The main device is shown in Figure 1.
1-Horizontal platform + 2· Inclined detection line: 3 Sample pressing plate: 4-Ruler, 5-Indicator line; 6-Inclined hollow part: Sample Figure 1 Main device of fabric stiffness tester
5.4.2.1 Horizontal platform
The surface is flat and smooth, with a size of 20cm×5cm, made of metal material, and equipped with a level bubble. 5.4.2.2 Inclined detection line
The position corresponds to the center of the front end of the sample and forms an angle of 41.5° with the bottom of the permanent platform. 5.4.2.3 Sample pressing plate
It is made of metal material with a length of 20cm, a width of 2.5cm, and a height of not less than 0.3cm. A rubber layer is attached to the contact surface with the sample, which can drive the sample to move synchronously.
5.4.2.4 The scale and indicator line
are respectively set on the platform side and the surface of the sample pressing plate to measure the extension length. The scale of the scale is accurate to 0.1cm5.4.3 Sample humidity adjustment and standard atmosphere
According to the provisions of GB6529.
5.4.4 Samples and test pieces
5.4.4.1 Take representative samples from the whole batch of products, and avoid sampling at the ends, wrinkles, and bending deformations. Cut four samples in the warp direction (vertical or length direction) and four samples in the weft direction (transverse direction) at the width (for widths of 100cm or more, 10cm away from the fabric edge).
5.4.4.3 The size of the sample is 20cm×2.5cm. 127
5.4.5 Test steps
GB8965-1998
5.4.5.1 Place the instrument in a position where the eyes can comfortably observe the horizontal platform and the test line. 5.4.5.2 Calibrate the instrument platform to a level.
5.4.5.3 Place the sample with its front side facing up on the stiffness tester platform, align one end of the sample with the front edge of the platform, place the pressing plate and align the indicator line with the "" scale line of the ruler.
5.4.5.4 The pressing plate drives the sample to move synchronously in the direction of the inclined surface at a speed of 0.3~~0.5cm/s. When the drooping end of the sample just touches the test line, stop moving and record the scale reading with an accuracy of 0.1cm. 5.4.5.5 Lift the pressing plate and measure the reverse side of the sample again according to 5.4.5, 3 and 5.4.5.4. 5.4.5.6 The arithmetic mean of the values measured on the front and back sides of each specimen is the single reading of the extended length of the specimen, accurate to 0.1 cm. 5.4.6 Calculation of results
5.4.6.1 Calculate the average of four readings in the warp (vertical or length direction) and weft (horizontal) directions respectively. If necessary, when the difference between the front and back readings is large, the front and back readings can be averaged separately. 5.4.6.2 Calculate the average bending length in the warp (vertical or length direction) and weft (horizontal) directions and the total average bending length according to formula (1) and formula (2), and take the effective value to the decimal place. Cα1/2
C NCr.Cw
Where. Length of specimen extension, cm
C Bending length, cm
C-average bending length in warp direction (vertical or length direction), cmC average bending length in weft direction (transverse), cmCa. Total average bending length, cm.
5.5 Shrinkage test of clothing shall be carried out in accordance with GB8630. 5.6 Strength test of suture shall be carried out in accordance with 7.5 of GB3916. 5.7 The number of times of contact with flame of suture shall be carried out in accordance with Appendix B; the washing method shall be carried out in accordance with Appendix A. 6 Inspection rules
6.1 Products must be inspected by the quality supervision and inspection department designated by the state, and can only be produced and sold after they meet this standard and obtain a production license. 6.2 Products must be inspected and qualified in accordance with this standard before they can leave the factory, and should be accompanied by a certificate of conformity, instruction manual and inspection certificate issued by the technical supervision department.
6.3 The factory quality inspection department shall test the flame retardancy, strength, moisture permeability, stiffness and shrinkage of the fabrics. 2m2 of each batch shall be sampled for testing. If each batch is larger than 1000m, 2m2 of each 1000m shall be sampled for testing. If the performance meets the requirements of 4.1.1, double re-test shall be conducted. If the performance fails, the batch of fabrics shall be discontinued.
6.4 The factory quality inspection department shall test the strength and flame retardancy of the sutures. One box shall be kept from each batch. If each batch is smaller than 20 boxes but less than 80 boxes, one box shall be kept from every 20 boxes. If the performance exceeds 80 boxes, 5 boxes shall be kept for testing. The performance shall meet the requirements of 4.1.2.1 and 4.1.2.2. If the performance fails, double re-test shall be conducted. If the performance fails, the batch of sutures shall be discontinued.
6.5 The factory quality inspection department shall test the finished garments. For less than 500 pieces (items), 10 pieces (items) shall be sampled; for 1000 pieces (items), 20 pieces (items) shall be sampled; for more than 1000 pieces (items), 30 pieces (items) shall be sampled. The performance shall meet the requirements of 4.2. If the garments are unqualified, they shall be retested twice. If the garments are still unqualified, the garments shall be discontinued from use. 6.6 Quality inspection shall include factory inspection and type inspection. Inspection items and classification of unqualified garments shall meet the requirements of Article 3. 128
Test items
Fl ammability of fabrics
Fl ammability of fabrics
Fl ammonia content of fabrics
Fl ammonia stiffness
Fl ammonia shrinkage and color
Fl ammonia toxicity
Strength of sewing thread
Fl ammability of sewing thread
Fl ammonia color
Sewing processingbzxZ.net
Stitch density
Sewing process
GB 8965 - 1998
Table 3 Classification of unqualified items
Corresponding standard clauses
4. 1. 1. 4
Classification of non-conformities
Type inspection
Factory inspection
Factory inspection shall be carried out in accordance with the sample size code in Table 2 of GB2828 and with a normal inspection single sampling plan. The inspection items are:
a) Class A special inspection level S-1, qualified quality level AQL2.5; b) Class B general inspection level I, qualified quality level AQL.=6.5. 6.6.2 Type inspection shall be carried out in accordance with the single sampling plan specified in GB2829, with inspection times per year. The non-conforming quality level value RQL is shown in Table 4. Table 4 Single sampling plan for discrimination level 1
Sample is too small
Reject quality level (RQL)
3(100)
6.6.3 The qualified and unqualified judgments of factory inspection and type inspection shall be carried out in accordance with the provisions of 4.11 of GB2828 and GB2829 respectively. 7 Marking, packaging, transportation and storage
7.1 Marking
Each flame retardant clothing must have the factory name, trademark, model, product certificate and permanent special mark. The outer packaging should have the factory name, address, product name, product number, quantity, production license number and date. 7.2 Packaging
The packaging should be neat and firm, the quantity should be accurate, and the product and the outer packaging should be equipped with a moisture-proof barrier. The packaging must not be damaged during product transportation and should be protected from rain and sunlight. 7.3 Storage
The product shall not be placed together with corrosive items. The storage place should be dry and ventilated. The product should be at least 200mm away from the wall and the ground to prevent rats from biting, insects from frogs, and poking.
A1 Scope
GB 8965 1998
Appendix A
(Appendix of the standard)
Test method for flame retardant and washability
This appendix is applicable to the washing method for evaluating the flame retardant performance and washability of flame retardant protective clothing, flame retardant protective clothing fabrics and sewing threads. A2 Equipment and supplies
A2.1 Washing machine
Automatic pulsator washing machine in accordance with GB4288. A2.2 Thermometer
Ordinary mercury thermometer with a temperature range of 0-100℃ and an accuracy of 0.5C. A2.3 Balance
A pan balance with a weighing capacity of 1000g and a sensitivity of 1g. A2.4 Washing powder
Ordinary low-foam washing powder in accordance with GB/T13171. A3 Washing conditions
Washing conditions shall comply with the provisions of Table A1.
Washing conditions
Washing method
Washing water temperature
Water capacity
40℃±3℃
Above 30L
Washing powder concentration
1:30 (cloth: water)
Add pure cotton white cloth sample to meet the bath ratio requirements Note: The sample pure white cloth is a single-layer woven fabric, with a minimum size of 350mm×500mm for each piece, and the sewing edge is locked. A4 Washing Procedure
A4.1 Washing by Washing Times
A4.1.1 Washing 1 Time
Put the sample in a washing machine that meets the requirements of A2.1, and wash it with soap at 40℃ for 15 minutes according to the washing conditions specified in A3, drain the water, and then spin it for 2 minutes; add room temperature tap water equal to the amount of soap liquid to the washing machine, rinse for 12 minutes, drain the water, and then spin it for 2 minutes. A4.1.2 Washing 12 Times
Repeat A4.1.1 for 11 times. The washing conditions for the 12th time are: put the sample in a washing machine that meets the requirements of A2.1, and wash it with soap at 40℃ for 15 minutes according to the washing conditions specified in A3, drain the water, and then spin it for 2 minutes; add room temperature tap water equal to the amount of soap liquid to the washing machine, rinse for 4 minutes, drain the water, repeat twice, and spin it for 2 minutes. Finally, let the sample dry naturally or dry it. A4.1.3 If the washing times specified cannot be completed continuously, the fabric shall be kept wet for a maximum of 18 hours after dehydration. 130
B1 Scope
GB8965-1998
Appendix B
(Appendix to the standard)
Test method for the number of flame contacts of suture
This appendix specifies the test method for the number of flame contacts of suture flame retardancy. This appendix is applicable to the evaluation of the flame retardancy of suture. B2 Apparatus and materials
B2.1 Combustion test apparatus (see Figure B1)
It is a vertical rectangular combustion box made of stainless steel with a glass door in front. There are 6 remote air holes on the top and sides of the box. The sample rack can be fixed in the box so that the sample rack is at 45°. Sample holder
B2.2 Sample holder (see Figure B2)
Ignition gas
Combustion tester
Sample support spiral coil: 0.5mm diameter hard stainless steel wire, wound into a coil with an inner diameter of 10mm, a wire spacing of 2mm, and a length of 120mm.
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Figure B2 Sample holder
B2.3 Gas igniter (see Figure 33) without air inlet. 131
B2.4 Gas
Industrial propane or butane gas.
B2.5 Ignition timer
GB 8965 - 1998
Figure B3 Gas igniter
Used to measure the ignition time of the sample with an accuracy of 0.1s. B3 Sample
B3.1 Sample specifications
Take 1g of yarn and make a strand of yarn with a length of 23cm, twist it 20 times, fold it in half to form a twist naturally, and prepare 5 identical samples.
B3.2 Humidity adjustment of the sample
The sample is balanced in a standard atmosphere of 20℃±2℃ and 65%±2%, placed for 8 hours, and then taken out and placed in a sealed container. B4 Test steps
B4.1 Test under atmospheric conditions of temperature of 10~~30C and relative humidity of 15%~~80%. B4.2 Light the igniter and adjust the flame height to 45mm±2mm. B4.3 Quickly load the sample into the sample support spiral coil. B4.4 Place the sample support spiral coil in the combustion sample box at a 45° direction. B4.5 Ignite the sample: the lower end of the sample is in contact with a 23mm ± 1mm flame. After ignition, the sample is removed, but the maximum ignition time for each time is 10s. When the sample stops burning, repeatedly adjust the remaining sample so that its lower end is in contact with the flame and ignite it for the second time. Repeat this operation until the sample burns to 90mm. B4.6 Record the number of times the sample needs to contact the flame to burn to 90mm. B4.7 Open the test box, take out the sample support spiral coil, remove the residue, clear the smoke and gas in the test box, and then test the next sample. B5 Test report
The test report should include the following:
a) Explanation that the test is carried out according to this method; b) Sample name, specifications and inspection unit, c) Test environment temperature and humidity;
d) The test results are expressed as the arithmetic mean of the number of ignition times of 5 samples (the decimal points are rounded off); e) Combustion characteristics: melting or dripping;
f) Test date and personnel.5 Ignition timer
GB 8965 - 1998
Figure B3 Gas igniter
Used to measure the ignition time of the sample, with an accuracy of 0.1s. B3 Sample
B3.1 Sample specifications
Take 1g of yarn, make a strand of yarn with a length of 23cm, twist it 20 times, fold it in half to form a twist shape, and prepare 5 identical samples.
B3.2 Humidity adjustment of the sample
The sample is balanced in a standard atmosphere of 20℃±2℃ and 65%±2%, placed for 8h, and then taken out and placed in a sealed container. B4 Test steps
B4.1 Carry out the test under atmospheric conditions of temperature of 10~~30C and relative humidity of 15%~~80%. B4.2 Light the igniter and adjust the flame height to 45mm±2mm. B4.3 Quickly load the sample into the sample supporting spiral coil. B4.4 Place the sample supporting spiral coil at 45° in the burning sample box. B4.5 Ignite the sample: the lower end of the sample is in contact with the 23mm±1mm flame. After ignition, the sample is removed, but the maximum ignition time for each time is 10s. When the burning of the sample stops, repeatedly adjust the remaining sample so that its lower end is in contact with the flame and ignite it for the second time. Repeat this operation until the sample burns to 90mm. B4.6 Record the number of times the sample needs to contact the flame to burn to 90mm. B4.7 Open the test box, take out the sample supporting spiral coil, remove the residue, clear the smoke and gas in the test box, and then test the next sample. B5 Test report
The test report should include the following contents:
a) Description that the test is carried out according to this method; b) Name, specification and inspection unit of the test sample; c) Test environment temperature and humidity;
d) Test result is expressed as the arithmetic mean of the ignition times of 5 test samples (numbers after the decimal point shall be rounded off); e) Combustion characteristics: melting or dripping;
f) Test date and personnel.5 Ignition timer
GB 8965 - 1998
Figure B3 Gas igniter
Used to measure the ignition time of the sample, with an accuracy of 0.1s. B3 Sample
B3.1 Sample specifications
Take 1g of yarn, make a strand of yarn with a length of 23cm, twist it 20 times, fold it in half to form a twist shape, and prepare 5 identical samples.
B3.2 Humidity adjustment of the sample
The sample is balanced in a standard atmosphere of 20℃±2℃ and 65%±2%, placed for 8h, and then taken out and placed in a sealed container. B4 Test steps
B4.1 Carry out the test under atmospheric conditions of temperature of 10~~30C and relative humidity of 15%~~80%. B4.2 Light the igniter and adjust the flame height to 45mm±2mm. B4.3 Quickly load the sample into the sample supporting spiral coil. B4.4 Place the sample supporting spiral coil at 45° in the burning sample box. B4.5 Ignite the sample: the lower end of the sample is in contact with the 23mm±1mm flame. After ignition, the sample is removed, but the maximum ignition time for each time is 10s. When the burning of the sample stops, repeatedly adjust the remaining sample so that its lower end is in contact with the flame and ignite it for the second time. Repeat this operation until the sample burns to 90mm. B4.6 Record the number of times the sample needs to contact the flame to burn to 90mm. B4.7 Open the test box, take out the sample supporting spiral coil, remove the residue, clear the smoke and gas in the test box, and then test the next sample. B5 Test report
The test report should include the following contents:
a) Description that the test is carried out according to this method; b) Name, specification and inspection unit of the test sample; c) Test environment temperature and humidity;
d) Test result is expressed as the arithmetic mean of the ignition times of 5 test samples (numbers after the decimal point shall be rounded off); e) Combustion characteristics: melting or dripping;
f) Test date and personnel.
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