GB/T 5130-1997 Test methods for industrial rigid laminates made of thermosetting resins for electrical use
Some standard content:
GB/T 5130—1997
This standard is a revision of GB5130—85 based on the International Electrotechnical Commission Standard 1EC893-2 "Standard Test Methods for Industrial Hard Laminated Sheets for Electrical Use Using Thermosetting Resins" (1992 Edition). It is equivalent to the International Electrotechnical Commission Standard 1EC893-2 "Standard Test Methods for Industrial Hard Laminated Sheets for Electrical Use Using Thermosetting Resins" (1992 Edition). It is equivalent to the International Electrotechnical Commission Standard 1EC893-2 "Standard Test Methods for Industrial Hard Laminated Sheets for Electrical Use Using Thermosetting Resins" (1992 Edition) in terms of technical content (except that the relative dielectric constant and dielectric loss factor allow the use of metal foil electrodes) and in terms of writing format (except for individual adjustments and supplements). This standard has the following differences from GB5130-85: a) Mechanical properties
(Added apparent bending modulus test
② Added compressibility test
@ Added shear strength test:
①④ Added the provision of stretch length ratio in the positive shrinkage strength test (take 10) b) Electrical properties
Added tracking resistance and electrolytic corrosion resistance test: ②) Added electrolytic corrosion test:
③ Added the provision of conductive silver paint electrode in the relative dielectric constant and dielectric loss factor test. e Thermal properties
① Added long-term heat resistance test;
② Added load deformation temperature test.
This standard was first issued in December 1977, revised for the first time in April 1985, and revised for the second time in June 1997. This standard will replace GB513085 from the time of implementation. This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the National Technical Committee for Standardization of Insulating Materials. The original unit of this standard: Guilin Electric Science Research Institute of the Ministry of Machinery Industry. The main organizers of this standard: Li Xuemin and Zhang Qiping. CB/T5130-1997
IEC Foreword
1) IEC's formal decisions or agreements on technical issues represent the international majority opinion on the issues involved as much as possible, and their technical content is recommended by the IEC Technical Committee. The Technical Committee is composed of representatives of the National Committees that are interested in this. 2) In order to facilitate international use, these formal decisions or agreements form recommended texts, which are accepted by the National Committees in this sense.
3) In order to promote international unification, FEC hopes that national committees will use the IEC recommended texts as their national standards when national conditions permit. Any differences between the IEC recommended standards and the corresponding national standards should be explained as clearly as possible in the national standards. 4) IEC has not established any procedures for the recognition mark. If a device claims to comply with the IFC recommended standards, IFC will not be responsible or obligated for this.
This part of the international standard IEC 893 was developed by the 15C Subcommittee (Technical Specifications) of the 15th Technical Committee (Insulating Materials) of IEC. This part is based on the following documents:
15C(CO)251
15C(CO)297
Full information on the standard at the time of voting can be found in the table indicated in the table above. ..com1Scope
National Standard of the People's Republic of China
Test methods for industrial rigid laminaled sheets based on thermosetting resins for electrical purpose
Test methads far industrial rigid laminaled sheets based on thermosetting resins for electrical purpose
This standard specifies the test methods for industrial rigid laminaled sheets based on thermosetting resins for electrical purpose. This standard applies to industrial rigid laminated sheets based on thermosetting resins for electrical purpose. 2 Reference standards
(B/T 5130—1997
cqvEC 893-2:1992
Replacement B513(0--35
The provisions contained in the following standards will become 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. Parties using non-standard standards should promptly explore the possibility of using the latest versions of the following standards. 6B 1.33—86 Test method for density and relative density of plastics CB 1034-86 Test method for water absorption of plastics GB/T1040-92 Test method for tensile properties of plastics GB/T1011-92 Test method for compression properties of plastics GB/T1013-93 Test method for simply supported beam stress of high-quality plastics GB1408-89 Test method for electrical strength of solid insulating materials GB1409-89 Test method for relative dielectric constant and dielectric loss factor of solid insulating materials at power frequency and high frequency (including wavelength) (B/F1843-1996 Plastic cantilever beam impact test piece method GB 2536-90 GB 4207-84 GB 655386
Transformer oil
Determination of comparative tracking index and resistance to electric tracking index of solid insulating materials under damp conditions Test method for evaluating resistance to tracking and erosion of electrical insulating materials used under severe environmental conditions GR 9341-88
Test method for bending properties of plastics
GE 1006488 Test method for insulation resistance of insulating materials GB 10580—89
GB 10582—89
Standard conditions for solid insulating materials before and during the test Test method for determining electrolytic corrosion of insulating materials caused by heating CB[1C20—89 Test method for determining the burning performance of solid electrical insulating materials exposed to ignition sources GB 11026.1—89 Standard Guide for Heat Resistance of Insulating Materials Part 1 Part: General procedures for developing aging test methods and evaluating test results
3 Sample pretreatment and test environment conditions
Unless otherwise specified, the sample shall be fully treated for at least 24 hours in standard atmosphere B (temperature 23℃±2℃, relative humidity 45%～55%) as specified in GB10580
Approved by the State Administration of Technical Supervision on June 3, 1997 and implemented on May 1, 1998
CB/T 5130-1997
Unless otherwise specified, the sample shall be tested under the above standard atmospheric conditions or start the test within 3 minutes after being taken out of the above recording towel. For high temperature test, the sample shall be tested immediately after being treated at the temperature specified in the product standard. 4 Dimensions
4.1.1 Test instrument
Outer diameter screw micrometer. The diameter of its measuring surface is 6mm~8mm, the unevenness of the measuring surface is not more than 0.01mm. And the parallelism of the two measuring surfaces shall be less than 0.003mm. The graduation value of the micrometer is 0.01mm, and the pressure applied to the sample is 0.1MPa～0.2MFa. 4.1.2 Test
In the received state, measure the thickness of two points along each edge of the plate, not less than 20mm from the edge, and measure eight points in total, with an accuracy of 0.01mm. 4.1.3 Result
Take the median of the eight measured values as the test result and report the maximum and minimum values. 4.2 Straightness
Put the plate with a nominal thickness of 1.6mm and above, concave side up, on the platform naturally, and place a 1000mm or 500mm lightweight ruler (mass less than 500g) on the plate, measure the maximum distance of the upper surface of the plate from the ruler, and the result is expressed in mm. 5 Mechanical property test
5.1 Bending strength
The test is carried out in accordance with GB 9341. The load direction should be perpendicular to the layer direction, and the applied strain rate should be in accordance with the product standard. If there is no regulation in the product standard, GB9341 should be followed.
Five specimens are fanned out in the A direction and the B direction as shown in Figure 1. If the thickness of the plate is greater than 0mm (20mm for PFWV1 type), it should be loaded from one side. 1 to 1 (mm (20mm for PFWV type), and the loaded side of the sample should face the pressure head during the test. Report the median of the test results in each direction, and take the test result with the lower median as the bending strength. For plates with fibers arranged roughly in the same direction, take the test result with the higher median as the bending strength. Take three significant figures. 5.2 Apparent bending elastic modulus
test shall be carried out in accordance with GB 9311. The direction of applied load, sampling method and expression of test results shall be in accordance with 5.1. 5.3 Bed shrinkage strength
test shall be carried out in accordance with GB/T 1041. The direction of applied load shall be perpendicular to the layer direction, the test speed shall be 10mm/min, the sample shall be a square prism or a rectangular prism, and the size shall be in accordance with GB/T 1041-92 Chapter 6 Table 1. Take the median of the five test results as the compressive strength and take one significant figure 5.4 Compressibility
Government Note:
PFWV is 1EC named aldehyde veneer laminate 5.4.1 Test equipment and instruments 1
GB/T 5130—1997
Long direction of product
Width direction of product
—Exposure of specimen;—Thickness of sample; A, B—Sampling direction Figure 1 Sample sampling method
Testing machine: Indication accuracy is ±1% of the indicated value, Loading plate: Hardened steel plate with surface roughness of Rao.8, and equipped with automatic centering device; Dial micrometer or other deformation measuring device: Indication accuracy is ±1% of the indicated value, graduation value is 0.01mm1 Thermometer: Graduation value is 1℃.
5.4.2 Samples
Machine two square samples with a side length of 25mm±0.25mm from the plate. If the plate thickness is less than 17mm, without changing its original surface, adopt the method of climbing to make the total height of the sample as close to 25mm as possible. The edge of the sample should be smooth and free of burrs. 5.4.3 Test
5.4.3.1 Carry out the test at the temperature specified in the product standard. 5.4.3.2 Place the specimen between two parallel pressure plates so that its center line is aligned with the loading axis and the loading direction is perpendicular to the layer direction. During the test, the load should be applied evenly over the entire test surface. 5.4.3.3 Apply an initial load of 1 kN steadily, hold for 1 min, and measure the height ht of the specimen. Then apply the load at a speed that causes the load to reach the value specified in the product standard (including the initial load of 1 kN) within 2 min, and hold for 1 min under this load, and then measure the height of the specimen again. After removing the load, check whether the specimen has signs of damage (obvious cracks or breaks). 5.4.4 Results
The compressibility is calculated according to formula (1): bzxz.net
Where: K——compressibility,%;
hi—hz
h——height of the specimen under the initial load (1kN), mmh—height of the specimen under the load specified in the product standard, mm (1)
The arithmetic mean of the test results of the two specimens is taken as the compressibility, and two significant figures are taken. And report the signs of specimen damage. 5.5 Impact strength
According to the requirements of the product standard, the following methods (Charpy method and Izod method) can be selected for impact test. 5.5.1 The simply supported case impact strength (Charpy method) test is carried out in accordance with GB/T 1043.
The specimen is 3 C-notch For the type specimen, the test direction is the same as the layer direction. Explanation:
GB/T 5130-1997
From the plate with a thickness of 4mm to 10mm, five specimens are processed in the A direction and B direction as shown in Figure 1, and the dimensions are shown in Figure 2\. If the thickness of the plate is greater than 10mm, the plate should be processed equally from both sides to 10mm. Plates with a thickness of less than 4mm are not tested. Report the median of the test results in each direction, and take the test result with the lower median value as the simply supported beam impact strength. For plates with fibers arranged in roughly the same direction, take the test result with the higher median value as the simply supported beam impact strength. Take two significant figures. Unit: mm
Figure 2 Specimen dimensions and test directions for simply supported beam impact test 5.5.2 Izod beam impact strength (1zxd (Method) The test is carried out in accordance with GB/I1813.
The specimen is a type 2 specimen with an A-type notch, and the test direction is parallel to the interlayer. From a plate with a thickness of 4mm to 10mm, five specimens are processed in the A direction and B direction as shown in Figure 1, and the dimensions are shown in Figure 3\. If the thickness of the plate is greater than 10mm, it should be processed equally from both sides of the plate to 10mm. Plates with a thickness of less than 4mm are not tested. Unit: mm
Figure 3 Specimen size and test direction for cantilever beam impact test The median value of each test result is taken, and the test result with the lower median value is taken as the cantilever beam impact strength. For plates with fibers arranged in the same direction, the test result with the higher median value is taken as the cantilever beam impact strength. Take two significant figures. Adoption instructions:
1) There is no such figure in 1EC893-2.
5.6 Shear strength
GB/T 5130—1997
The parallel layer shear strength test is an important test to evaluate the interlayer bonding performance of materials. This test is only suitable for plates with a thickness of not less than 5mm.
5.6.1 Test equipment and instruments
Testing machine: Same as 5.4.1;
Shear test device: See Figure 4.
Unit ct
Figure 4 Parallel layer shear strength test device
5.6.2 Test specimens
From a plate with a thickness greater than or equal to 5mm, add 1.10 specimens in the A direction and B direction as shown in Figure 1, respectively. The length of the specimen is 20mm = 0.1m, and the width and thickness are 5m = a.tunn
Note: For two specimens tested at the same time, the size in the shear direction is allowed to have a deviation of 0.01m. 5.6.3 Test
5.6.3.1 Install two specimens on the test device at the same time, so that the shear plane of the specimen is parallel to the layer direction. 5.6.3.2 Apply the load at the speed specified in the product standard until the specimen breaks, read and record the breaking load. 5.6.4 Result 3
Shear strength is calculated according to formula (2):
Instructions for use:
1) IEC 893-2 does not have this provision.
21 IEC893-2 does not have a calculation formula.
Where: - parallel layer shear strength, MPa
P——breaking load, N;
CB/T 5130—1997
S—shear cross-sectional area of the specimen (take 100), mm. Report the values of the test results in each direction, and take the test result with the lower median value as the shear strength, round to two significant figures. 5.7 The tensile strength test is carried out in accordance with GB/T1040. The test speed is 5mm/min, and the tensile stress under the maximum load is taken as the tensile strength. Unless otherwise specified, five specimens are processed from the 1.5mm~10mm thick plate in the A direction and B direction as shown in Figure 1. The specimens are the "type specimens" in GB/T1040-92. If the thickness of the plate is greater than 10mm, 10mm should be processed equally from both sides of the plate. Report the median of the test results in each direction, and take the test result with the smaller median as the tensile strength. For plates where the fibers are arranged in roughly the same direction, take the test result with the higher median as the tensile strength. Two significant figures. 6 Electrical performance test
6.1 Electrical strength and breakdown voltage
The test is carried out in accordance with GB1408, and the following supplementary provisions are made: 6.1.1 The specimen
is loaded from each side of the plate Three samples are tested in vertical and parallel directions respectively. The thickness of the plate used for vertical test should not be greater than 3mm, and the size is 150mm×150mm. The thickness of the plate used for parallel test should be greater than 3mm, and the size is (100±2)mmX(25±0.2)mm.
6.1.2 Test medium
Unless otherwise specified, the test should be carried out in transformer oil at 90℃±2℃ (should comply with GB2536). To ensure that the sample can reach the test temperature, the sample should be immersed in transformer oil at the specified temperature for 1h before the test. Then the test is carried out immediately.
6.1.3 Dead pressure method
Unless otherwise specified, the test adopts 20s Step by step voltage increase. 6.1.4 Sub-vertical layer test
The electrode system shall comply with the provisions of 6.1.1 and 6.1.2 of GB1408-89, with the upper electrode diameter of 25mm and the lower electrode diameter of 75mm. 6.1.5 Parallel layer test
The electrode system shall comply with the provisions of 6.2.1 of GB1408-89. The diameter of the flat electrode shall not be less than 130mm and the edge of the electrode shall be rounded (radius of 3mm~5mm).
For fibers, the same For plates arranged in one direction, the test direction should be parallel to the fiber direction. 6.1.6 Results
shall be carried out in accordance with Chapter 9 of GB1408.89. The vertical layer test is expressed in electrical strength (MV/m); the parallel layer test is expressed in breakdown voltage (kV). The median of the test results of three samples is taken as the test result of the vertical layer electrical strength or the parallel layer breakdown voltage and the minimum value is reported, taking three significant figures. 6.2 The dielectric constant and dielectric loss factor tests are carried out in accordance with GB 1409, and the following supplementary provisions are made. 6.2.1 Samples
Two samples are processed from plates with a thickness of less than 10mm, respectively, for the power test and high-frequency reduction test. The sample size for the power frequency (48Hz~62Hz) test is 100mm×100mm, and the sample size for the high frequency (1MHz) test is 55mm×55mm. 6.2.2 Electrode
Instructions for use:
1) This is in accordance with IEC243-1 (1988 edition). ..comGB/T 5130—1997
The three-electrode system is used for the industrial combustion test, and the electrode configuration is shown in Figure 5. The high-frequency test uses a two-electrode system, and the electrode diameter is 50mm±0.2mm. The electrode material should preferably use conductive silver paint, and metal foil 1 can also be used. 6.2.3 Test ladder pretreatment
Unless otherwise specified, the sample should be treated in air at a temperature of 105℃+5℃ and a relative humidity of less than 20% (GB10580 dry heat standard atmosphere conditions) for 96h. After treatment, take it out and put it in a desiccator to cool to room temperature. 6.2.4 Test
Take out the sample from the desiccator, install the electrodes within 10min and start the test. Unless otherwise specified, the test field strength of the standard frequency test is usually 1MV/m1. 6.2.5 Results
Take the arithmetic mean of the test results of the two samples as the relative dielectric constant or dielectric loss factor, and take two significant figures. Unit: mm
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1—Measurement electrode t2—Protective electrode 13—High IK electrode; 4—Specimen Figure 5 Three-electrode system
6.3 Insulation resistance after immersion in water
According to GB10064, the electrode is a cone pin electrode, and the following supplementary provisions are made: 6.3.1 Specimen
From the plate with a thickness of less than 25mm, add two specimens in the A direction and B direction as shown in Figure 1, with a size of 75mm×50mm
6.3.2 Conditioning
Put the specimen in an oven at a temperature of 55℃±2℃: for 24h±1h, then take it out and cool it to room temperature and then put it in an oven at 23℃±2 ℃ steam water or deionized water soaked for 24h ± 1h
6.3.3 Test
After the water is submerged, take out the sample and wipe it with a clean mesh or filter paper, install the electrode for testing. The test should be carried out under the environmental conditions of temperature 15C ~ 35C and relative humidity not more than 75%. And each measurement should be completed within 1.5min~~2nin after the sample is taken out of the water. Usually the test voltage is DC 500V, the electrification time is 1min, 6.3.4 Results
Report the arithmetic mean of the test results in each direction, and take the lower test result as the continuous resistance after water submersion, take two significant mathematical numbers,
6.4 Comparative tracking index and full-charge tracking index test are carried out according to GB 4207, using test braid A6.5 Tracking resistance and electrical corrosion resistance test are carried out according to GB6553, and the specific method is specified by the product standard. 6.6 Electrolytic corrosion test is carried out in accordance with GB10582, and the specific method is specified by the product standard. Adopting the following explanation: 1) TEC 893-2 only requires conductive silver electrodes, but considering the actual situation in China, metal box electrodes are allowed. 7 Thermal performance test 7.1 Long-term heat resistance GB/T 5130-1997 Long-term heat resistance test is carried out in accordance with GB11026.1. The test performance of the long-term heat resistance test is the vertical layer bending strength, and the performance decrease of 50% is taken as the test end point. The bending strength test is carried out in accordance with the provisions of 5.1. The sample size is 80mm×10tntm×4mm, and the test should be carried out in an environment with a temperature of 23℃±5℃. The long-term heat resistance is expressed as a temperature index under 20kh. 7.2 The flammability test shall be carried out in accordance with GB11020. The specific method shall be specified by the product standard. 7.3 Deformation temperature under load 7.3.1 Test equipment and instrument Loading device: The basic structure is shown in Figure 6. The vertical part of the frame and the loading rod shall have the same expansion coefficient. The radius of the support and the pressure head shall be 3mm±0.2mm, and the width shall be greater than the width of the sample. Heating oil bath: The oil bath contains a liquid heat transfer medium (such as silicone oil), which can be heated at a uniform rate of 120℃/h±5℃/h, and can be heated by 10℃±1C in any 5 minutes. The temperature distribution change in the oil bath should be less than 2% of the difference between the oil bath temperature and the ambient temperature. Thermometer or other temperature measuring device: The graduation value is 0.5℃ Dial micrometer or other deformation measuring device: The indication accuracy is 1% of the indication value, and the graduation value is 0.01mm. Code: A set, which can form the required bending stress. 7.3.2 Test specimens
From plates with a thickness of 3 mm to 7 mm, add 1 test specimen with a width of 10 mm to 13 mm in the direction specified in the product standard. Its length shall be at least 10 mm greater than the support distance.
If the plate thickness is greater than 7 mm, it shall be smoothly machined from one side to the required thickness. 7.3.3 Or test
7.3. 3. 1 Measure the size of the test specimen with an accuracy of 0.05 mm. 7.3.3.2 The applied load shall be calculated according to formula (3): 2abha
Where; P
Applied load, N,
Bending stress·MPas
Test specimen width, mm:
Test specimen thickness, mm;
Support distance, mm;
Total weight of the load rod and the magnetic code disk, N
Spring thrust of the dial micrometer, N.
（3）
The bending force applied is 1/0 of the bending strength index value at room temperature specified in the product standard. If there is no product standard, 1/10 of the actual measured bending strength value at room temperature is taken. The support distance is (30±2) of the specimen thickness. 7.3. 3. 3 The end point deformation is calculated according to formula (4): Instructions for use
1) IEC 893-2 does not have this content.
y= 1. 5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.Usually the test field strength of the flag processing frequency is 1MV/m1. 6.2.5 Results
Take the arithmetic mean of the test results of the two samples as the relative dielectric constant or dielectric loss factor, and take two significant figures. Unit: mm
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1—Measurement electrode t2—Protective electrode 13—High IK electrode; 4—Specimen Figure 5 Three-electrode system
6.3 Insulation resistance after immersion in water
According to GB10064, the electrode is a cone pin electrode, and the following supplementary provisions are made: 6.3.1 Specimen
From the plate with a thickness of less than 25mm, add two specimens in the A direction and B direction as shown in Figure 1, with a size of 75mm×50mm
6.3.2 Conditioning
Put the specimen in an oven at a temperature of 55℃±2℃: for 24h±1h, then take it out and cool it to room temperature and then put it in an oven at 23℃±2 ℃ steam water or deionized water soaked for 24h ± 1h
6.3.3 Test
After the water is submerged, take out the sample and wipe it with a clean mesh or filter paper, install the electrode for testing. The test should be carried out under the environmental conditions of temperature 15C ~ 35C and relative humidity not more than 75%. And each measurement should be completed within 1.5min~~2nin after the sample is taken out of the water. Usually the test voltage is DC 500V, the electrification time is 1min, 6.3.4 Results
Report the arithmetic mean of the test results in each direction, and take the lower test result as the continuous resistance after water submersion, take two significant mathematical numbers,
6.4 Comparative tracking index and full-charge tracking index test are carried out according to GB 4207, using test braid A6.5 Tracking resistance and electrical corrosion resistance test are carried out according to GB6553, and the specific method is specified by the product standard. 6.6 Electrolytic corrosion test is carried out in accordance with GB10582, and the specific method is specified by the product standard. Adopting the following explanation: 1) TEC 893-2 only requires conductive silver electrodes, but considering the actual situation in China, metal box electrodes are allowed. 7 Thermal performance test 7.1 Long-term heat resistance GB/T 5130-1997 Long-term heat resistance test is carried out in accordance with GB11026.1. The test performance of the long-term heat resistance test is the vertical layer bending strength, and the performance decrease of 50% is taken as the test end point. The bending strength test is carried out in accordance with the provisions of 5.1. The sample size is 80mm×10tntm×4mm, and the test should be carried out in an environment with a temperature of 23℃±5℃. The long-term heat resistance is expressed as a temperature index under 20kh. 7.2 The flammability test shall be carried out in accordance with GB11020. The specific method shall be specified by the product standard. 7.3 Deformation temperature under load 7.3.1 Test equipment and instrument Loading device: The basic structure is shown in Figure 6. The vertical part of the frame and the loading rod shall have the same expansion coefficient. The radius of the support and the pressure head shall be 3mm±0.2mm, and the width shall be greater than the width of the sample. Heating oil bath: The oil bath contains a liquid heat transfer medium (such as silicone oil), which can be heated at a uniform rate of 120℃/h±5℃/h, and can be heated by 10℃±1C in any 5 minutes. The temperature distribution change in the oil bath should be less than 2% of the difference between the oil bath temperature and the ambient temperature. Thermometer or other temperature measuring device: The graduation value is 0.5℃ Dial micrometer or other deformation measuring device: The indication accuracy is 1% of the indication value, and the graduation value is 0.01mm. Code: A set, which can form the required bending stress. 7.3.2 Test specimens
From plates with a thickness of 3 mm to 7 mm, add 1 test specimen with a width of 10 mm to 13 mm in the direction specified in the product standard. Its length shall be at least 10 mm greater than the support distance.
If the plate thickness is greater than 7 mm, it shall be smoothly machined from one side to the required thickness. 7.3.3 Or test
7.3. 3. 1 Measure the size of the test specimen with an accuracy of 0.05 mm. 7.3.3.2 The applied load shall be calculated according to formula (3): 2abha
Where; P
Applied load, N,
Bending stress·MPas
Test specimen width, mm:
Test specimen thickness, mm;
Support distance, mm;
Total weight of the load rod and the magnetic code disk, N
Spring thrust of the dial micrometer, N.
（3）
The bending force applied is 1/0 of the bending strength index value at room temperature specified in the product standard. If there is no product standard, 1/10 of the actual measured bending strength value at room temperature is taken. The support distance is (30±2) of the specimen thickness. 7.3. 3. 3 The end point deformation is calculated according to formula (4): Instructions for use
1) IEC 893-2 does not have this content.
y= 1. 5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.Usually the test field strength of the frequency test is 1MV/m1. 6.2.5 Results
Take the arithmetic mean of the test results of the two samples as the relative dielectric constant or dielectric loss factor, and take two significant figures. Unit: mm
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1—Measurement electrode t2—Protective electrode 13—High IK electrode; 4—Specimen Figure 5 Three-electrode system
6.3 Insulation resistance after immersion in water
According to GB10064, the electrode is a cone pin electrode, and the following supplementary provisions are made: 6.3.1 Specimen
From the plate with a thickness of less than 25mm, add two specimens in the A direction and B direction as shown in Figure 1, with a size of 75mm×50mm
6.3.2 Conditioning
Put the specimen in an oven at a temperature of 55℃±2℃: for 24h±1h, then take it out and cool it to room temperature and then put it in an oven at 23℃±2 ℃ steam water or deionized water soaked for 24h ± 1h
6.3.3 Test
After the water is submerged, take out the sample and wipe it with a clean mesh or filter paper, install the electrode for testing. The test should be carried out under the environmental conditions of temperature 15C ~ 35C and relative humidity not more than 75%. And each measurement should be completed within 1.5min~~2nin after the sample is taken out of the water. Usually the test voltage is DC 500V, the electrification time is 1min, 6.3.4 Results
Report the arithmetic mean of the test results in each direction, and take the lower test result as the continuous resistance after water submersion, take two significant mathematical numbers,
6.4 Comparative tracking index and full-charge tracking index test are carried out according to GB 4207, using test braid A6.5 Tracking resistance and electrical corrosion resistance test are carried out according to GB6553, and the specific method is specified by the product standard. 6.6 Electrolytic corrosion test is carried out in accordance with GB10582, and the specific method is specified by the product standard. Adopting the following explanation: 1) TEC 893-2 only requires conductive silver electrodes, but considering the actual situation in China, metal box electrodes are allowed. 7 Thermal performance test 7.1 Long-term heat resistance GB/T 5130-1997 Long-term heat resistance test is carried out in accordance with GB11026.1. The test performance of the long-term heat resistance test is the vertical layer bending strength, and the performance decrease of 50% is taken as the test end point. The bending strength test is carried out in accordance with the provisions of 5.1. The sample size is 80mm×10tntm×4mm, and the test should be carried out in an environment with a temperature of 23℃±5℃. The long-term heat resistance is expressed as a temperature index under 20kh. 7.2 The flammability test shall be carried out in accordance with GB11020. The specific method shall be specified by the product standard. 7.3 Deformation temperature under load 7.3.1 Test equipment and instrument Loading device: The basic structure is shown in Figure 6. The vertical part of the frame and the loading rod shall have the same expansion coefficient. The radius of the support and the pressure head shall be 3mm±0.2mm, and the width shall be greater than the width of the sample. Heating oil bath: The oil bath contains a liquid heat transfer medium (such as silicone oil), which can be heated at a uniform rate of 120℃/h±5℃/h, and can be heated by 10℃±1C in any 5 minutes. The temperature distribution change in the oil bath should be less than 2% of the difference between the oil bath temperature and the ambient temperature. Thermometer or other temperature measuring device: The graduation value is 0.5℃ Dial micrometer or other deformation measuring device: The indication accuracy is 1% of the indication value, and the graduation value is 0.01mm. Code: A set, which can form the required bending stress. 7.3.2 Test specimens
From plates with a thickness of 3 mm to 7 mm, add 1 test specimen with a width of 10 mm to 13 mm in the direction specified in the product standard. Its length shall be at least 10 mm greater than the support distance.
If the plate thickness is greater than 7 mm, it shall be smoothly machined from one side to the required thickness. 7.3.3 Or test
7.3. 3. 1 Measure the size of the test specimen with an accuracy of 0.05 mm. 7.3.3.2 The applied load shall be calculated according to formula (3): 2abha
Where; P
Applied load, N,
Bending stress·MPas
Test specimen width, mm:
Test specimen thickness, mm;
Support distance, mm;
Total weight of the load rod and the magnetic code disk, N
Spring thrust of the dial micrometer, N.
（3）
The bending force applied is 1/0 of the bending strength index value at room temperature specified in the product standard. If there is no product standard, 1/10 of the actual measured bending strength value at room temperature is taken. The support distance is (30±2) of the specimen thickness. 7.3. 3. 3 The end point deformation is calculated according to formula (4): Instructions for use
1) IEC 893-2 does not have this content.
y= 1. 5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.4 The comparative tracking index and full-charge tracking index tests are carried out in accordance with GB 4207, using test braid A6.5 The tracking resistance and erosion resistance tests are carried out in accordance with GB6553, and the specific methods are specified by the product standards. 6.6 The electrolytic corrosion test is carried out in accordance with GB10582, and the specific methods are specified by the product standards. Using the following: 1) TEC 893-2 only requires conductive silver electrodes, but considering the actual domestic situation, metal foil electrodes are allowed. 7 Thermal performance test 7.1 Long-term heat resistance GB/T 5130-1997 Long-term heat resistance test is carried out in accordance with GB11026.1. The test performance of the long-term heat resistance test is the vertical layer bending strength, and the performance reduction of 50% is taken as the test end point. The bending strength test is carried out in accordance with the provisions of 5.1. The sample size is 80mm×10tntm×4mm. The test should be carried out in an environment with a temperature of 23℃±5℃. The long-term heat resistance is expressed by the temperature index under 20kh. 7.2 The burning resistance test is carried out in accordance with GB11020. The specific method is specified by the product standard. 7.3 Load deformation temperature 7.3.1 Test equipment and instrument Loading device: The basic structure is shown in Figure 6. The vertical part of the frame and the loading rod should have the same expansion coefficient. The radius of the support and the pressure head is 3mm±0.2mm, and the width is greater than the width of the sample. Heating oil bath: The oil bath is filled with liquid heat transfer medium (such as silicone oil), which can be heated at a uniform rate of 120℃/h±5℃/h, and can be heated by 10℃±1C in any 5min. The temperature distribution change in the oil bath should be less than 2% of the difference between the oil bath temperature and the ambient temperature. Thermometer or other temperature measuring device: the graduation value is 0.5℃. Dial micrometer or other deformation measuring device: the indication accuracy is 1% of the indication value, and the graduation value is 0.01mm. Code: a set, which can form the required bending stress. 7.3.2 Test specimen
From the plate with a thickness of 3mm~7mm, add 1. The width is 10mm~13mm = specimens according to the direction specified in the product standard. Its length is at least 10mm greater than the support distance.
If the thickness of the plate is greater than 7mm, it should be smoothly processed from one side to the required thickness. 7.3.3 Or test
7.3. 3. 1 Measure the size of the specimen, accurate to 0. 05mm. 7.3.3.2 The applied load is calculated according to formula (3): 2abha
where; P
applied load, N,
bending stress·MPas
specimen width.mm:
specimen thickness, mm;
support distance, mm;
total weight of the load rod and the magnetic code disk, N
spring thrust of the dial micrometer, N.
(3)
where the applied bending force is 1/0 of the bending strength index value at room temperature specified in the product standard. If there is no product standard, 1/10 of the actual measured bending strength value at room temperature is taken. The support distance is (30±2) of the specimen thickness. 7.3.3.3 The terminal deformation is calculated according to formula (4): Instructions for use
1) IEC 893-2 does not have this content.
y= 1. 5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.4 The comparative tracking index and full-charge tracking index tests are carried out in accordance with GB 4207, using test braid A6.5 The tracking resistance and erosion resistance tests are carried out in accordance with GB6553, and the specific methods are specified by the product standards. 6.6 The electrolytic corrosion test is carried out in accordance with GB10582, and the specific methods are specified by the product standards. Using the following: 1) TEC 893-2 only requires conductive silver electrodes, but considering the actual domestic situation, metal foil electrodes are allowed. 7 Thermal performance test 7.1 Long-term heat resistance GB/T 5130-1997 Long-term heat resistance test is carried out in accordance with GB11026.1. The test performance of the long-term heat resistance test is the vertical layer bending strength, and the performance reduction of 50% is taken as the test end point. The bending strength test is carried out in accordance with the provisions of 5.1. The sample size is 80mm×10tntm×4mm. The test should be carried out in an environment with a temperature of 23℃±5℃. The long-term heat resistance is expressed by the temperature index under 20kh. 7.2 The burning resistance test is carried out in accordance with GB11020. The specific method is specified by the product standard. 7.3 Load deformation temperature 7.3.1 Test equipment and instrument Loading device: The basic structure is shown in Figure 6. The vertical part of the frame and the loading rod should have the same expansion coefficient. The radius of the support and the pressure head is 3mm±0.2mm, and the width is greater than the width of the sample. Heating oil bath: The oil bath is filled with liquid heat transfer medium (such as silicone oil), which can be heated at a uniform rate of 120℃/h±5℃/h, and can be heated by 10℃±1C in any 5min. The temperature distribution change in the oil bath should be less than 2% of the difference between the oil bath temperature and the ambient temperature. Thermometer or other temperature measuring device: the graduation value is 0.5℃. Dial micrometer or other deformation measuring device: the indication accuracy is 1% of the indication value, and the graduation value is 0.01mm. Code: a set, which can form the required bending stress. 7.3.2 Test specimen
From the plate with a thickness of 3mm~7mm, add 1. The width is 10mm~13mm = specimens according to the direction specified in the product standard. Its length is at least 10mm greater than the support distance.
If the thickness of the plate is greater than 7mm, it should be smoothly processed from one side to the required thickness. 7.3.3 Or test
7.3. 3. 1 Measure the size of the specimen, accurate to 0. 05mm. 7.3.3.2 The applied load is calculated according to formula (3): 2abha
where; P
applied load, N,
bending stress·MPas
specimen width.mm:
specimen thickness, mm;
support distance, mm;
total weight of the load rod and the magnetic code disk, N
spring thrust of the dial micrometer, N.
(3)
where the applied bending force is 1/0 of the bending strength index value at room temperature specified in the product standard. If there is no product standard, 1/10 of the actual measured bending strength value at room temperature is taken. The support distance is (30±2) of the specimen thickness. 7.3.3.3 The terminal deformation is calculated according to formula (4): Instructions for use
1) IEC 893-2 does not have this content.
y= 1. 5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.5×10-×13
2) In the formula, “F\ in [FC893-2] is the total mass of the load rod and the code multiplied by the acceleration of gravity. Deformation at one full point, mm;
In the formula: Y
h,L--same as formula (3).
GB/T 5130-1997
7. 3. 3. 4 Adjust the support distance, accurate to 0. 5mm. The specimen should be installed so that the loading direction is perpendicular to the layer direction and the long axis of the specimen is perpendicular to the axial direction of the indenter and the support.
Micrometer
Carbon fiber,
Dial micrometer. Graduation period 0.01mm
Dial
Indenter + contact edge
Radius 3=0.2r
Adjustable specimen support
Contact edge radius um ± 1.2mr
Figure 6 Schematic diagram of the test device for load deformation temperature 7.3.3.5 Install the thermometer. Use a thermometer to measure the temperature of the test area. The distance between its bottom and the specimen should be less than 10mm, but it should not touch the specimen. Another thermometer is used to monitor the temperature of the heating oil. 7.3.3.6 When the oil temperature is 20℃~23℃, apply the calculated load and stabilize for 5min Then adjust the zero point of the deformation measuring device, and heat up at a rate of 1 nm °C/±5 °C/h, and record the temperature when the end deformation is reached. 7.3.4 Results
The median of the test results of the three samples is taken as the load deformation temperature, and three significant figures are taken. 8 Physical and chemical properties
8.1 Density
The test is carried out according to method A of GB 1033. Number of samples: 1. The median of the test results of the three samples is taken as the density, and two significant figures are taken.
8.2 Water absorption
GB/T 5130—1997
8.2.1 The test is carried out according to method 1 of GB1034. The evaporation water overflow is 23C±0.5℃. 8.2.2 Sample
If the plate thickness is less than or equal to 25mm, the sample thickness is the original plate thickness. It is recommended that when the plate thickness is greater than 25mm, it should be smoothly increased from one side to 25mm. The number of samples is three. 8.2.3 Result
The median value of the test result of one sample is taken as the water absorption, and the result is rounded to the integer and expressed in mg.
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