Some standard content:
Chemical Industry Standard of the People's Republic of China
HG2402-92
Roof Rubber Waterproof Material
EPDM Sheet
1992-10-22 Issued
Ministry of Chemical Industry of the People's Republic of China
1993-07-01 Implementation
Chemical Industry Standard of the People's Republic of China
Roof Rubber Waterproof Material
EPDM Sheet
1 Subject Content and Scope of Application
HG2402-92
This standard specifies the technical requirements, test methods, inspection rules and marking, packaging, transportation and storage requirements for roof EPDM (combined) rubber waterproof sheet (referred to as waterproof sheet). This standard applies to waterproof sheets with EPDM rubber as the main material and no fabric-reinforced vulcanized rubber. It is used as waterproof material for roofs or underground projects that are resistant to sunlight and corrosion.
2 Reference standards
Test method for asphalt paper waterproofing membrane
Determination of tensile properties of vulcanized rubber
GB/T529 Determination of tear strength of vulcanized rubber (trouser-shaped, right-angled and crescent-shaped specimens)GB1682 Test method for brittle temperature of vulcanized rubberGB1690
Test method for liquid resistance of vulcanized rubber
GB/T2941 Standard temperature, humidity and time for environmental conditioning and testing of rubber specimensHot air aging test for rubber Test method
GB3512
Ozone aging test for vulcanized rubber
GB7762
Static tensile test method
HG／T2198 Physical test method for vulcanized rubber General requirements 3 Technical requirements
3.1 Specifications and tolerances of waterproof sheets
3.1.1 Specifications and tolerances of waterproof sheets shall comply with the provisions of Table 1. Table 1
Thickness, mm
1.0, 1.2, 1.5, 2. 0
3.1.2 The size tolerance of waterproof sheet shall comply with the provisions of Table 2. Allowable deviation of thickness, %
Approved by Ministry of Chemical Industry of the People's Republic of China on October 22, 19921
Width, m
1.0, 1.2
Length, m
Allowable deviation of width and length
Negative value is not allowed
Implementation on July 1, 1993
HG2402—92
3.2 The physical properties of waterproof sheet shall comply with the provisions of Table 3. Table 3
Tensile strength, room temperature, MPa
Elongation at break, %
Right-angle tear strength, room temperature, N/cm
0.3MPax30min
Water impermeability
Heating expansion
Adhesion performance
(glue to glue)
Hot air aging
80℃x168h
Alkali resistance
(10%Ca(OH)2, 168h×room temperature)
Brittle temperature, ℃
0.1MPa×30min
No treatment
Hot air aging (80℃×168h)
Alkali resistance (10%Ca(OH)2168h)||tt| |Change rate of tensile strength, %
Change rate of elongation at break, the reduction value does not exceed, %Change rate of tear strength, %
Change rate of tensile strength, %
Change rate of elongation at break, the reduction value does not exceed, %Heat aging (80℃×168h), elongation 100%500pphm; 168h×40℃; elongation 40%, static ozone aging
Tensile strength, MPa
Elongation at break (-20℃), %
Right-angle tear strength, N/cm
100pphm\; 168h×40℃; elongation 40%, static -20c
-20℃
Note: 1) 1pphm ozone concentration is equivalent to 1.01mPa ozone partial pressure. Refers to
First-class products
Qualified products
-20~40
-40~40
-20~50
-20~20
No cracks
No cracks
No cracks
3.3 Appearance quality requirements for waterproof sheets
3.3.1 The surface of the waterproof sheet should be flat and the edges should be neat. HG2402—92
3.3.2 Under the condition that it does not affect the use of the waterproof sheet, the surface defects should comply with the provisions of Table 4. Table 4
, Defect Name
Mechanical Damage
Sponge Crack
Test Method
Appearance Quality
First-class Products
Depth shall not exceed 10% of the sheet thickness
Not allowed
Check with visual inspection and measuring tools.
4.2 Specifications and Dimensions
Depth shall not exceed 20% of the sheet thickness
Not more than 9mm per square meter
Qualified Products
Depth shall not exceed 10% of the sheet thickness, not more than 3mm per square meter
Length and width of waterproof sheet shall be measured accurately to 1mm4.3 Determination of Thickness and Physical Properties
4.3.1 Sample Preparation
Take qualified rolls according to 5.5, select 1 roll from each batch, cut 1.8m test samples and indicate the end position of the sample roll. Then cut off 300mm from the end to obtain the sample for measuring thickness and physical properties. 4.3.2 Test conditions of the sample
Perform according to the provisions of GB/T2941.
4.3.3 Determination of thickness
The selection of thickness measurement shall comply with the provisions of Figure 1. Take 4 points (a, b, c, d) within 20mm at both ends of the longitudinal direction and 200mm at both ends of the transverse direction of the sample, and then take points (e, fg, i, h) at the four equal parts of ab and cd, for a total of 10 thickness measurement points. The measurement results are expressed as the average value of 10 points.
HG240292
Four equal parts between ab
Longitudinal center line
Four equal parts between ab
4.3.4 Determination of physical properties
4.3.4.1 Use the sample in 4.3.1, and after measuring the thickness, cut out three specimens I, II, II and III according to the positions shown in Figure 2. Each specimen should also be marked with the word "up" to indicate the direction.
Specimen 1
Longitudinal center line
Specimen weight
HG 2402—92
4.3.4.2 Cut out the specimens of each test item in Table 5 from each specimen (i.e., specimen I, specimen II, specimen III) in Figure 2 and 4.3.4.1 according to the direction and configuration of Figure 3.
4.3.4.3 Test according to the test items in Table 5. Table
Test items
23±2℃
Tensile property test
Hot air aging test
Alkali immersion test
Specimen code
Specimen size, mm
Type 2 cutter in GB528
Type 1 cutter in GB528
G Type 2 cutter in B528
Type 1 cutter in GB528
Number of samples
Test items
-20℃
Tear strength test
Heating expansion test
Tensile aging test
Watertight test
Adhesive performance test
Brittle temperature
23±2℃
Hot air Air aging test
Heat aging
Ozone aging
23±2℃
Hot air aging test
Alkali immersion performance test
HG2402—
Continued Table 5
Sample code
Sample size, mm
GB/T529 regulations
300×30
GB52 8 Type 1 cutter
150×150
150×25
GB1682 regulations
4.3.4.4 The determination of tensile strength and elongation at break of waterproof sheet shall be carried out in accordance with the provisions of GB-528. Note: The thickness of the sample is the thickness measured in 4.3.3.4.5 The tear strength (right angle sample) test of waterproof sheet shall be carried out in accordance with the provisions of GB/T529. 4.3.4.6 The hot air aging test of waterproof sheet shall be carried out in accordance with the provisions of GB3512. 4.3.4.7
The ozone aging test of waterproof sheet shall be carried out in accordance with the provisions of GB7762. The alkali resistance test of waterproof sheet shall be carried out in accordance with the provisions of GB1690. The water-impermeability test of waterproof sheet shall be carried out in accordance with the provisions of GB328. The brittle temperature test of waterproof sheet shall be carried out in accordance with the provisions of GB1682.4.3.4.11
Number of samples
The high and low temperature tensile strength and low temperature breaking elongation test of waterproof sheet shall be carried out in accordance with GB528. The precooling or preheating time of the sample is 1h,
4.3.4.12 The high and low temperature tear strength (right angle sample) test of waterproof sheet shall be carried out in accordance with GB/T529. The precooling or preheating time of the sample is 1h,
The heating expansion test of waterproof sheet is shown in Appendix A (Supplement). The adhesion test of waterproof sheet is shown in Appendix B (Supplement)4.3.4.14
The thermal aging test of waterproof sheet is shown in Appendix C (Supplement). 4.3.4.15
5 Inspection rules
The waterproof sheet is batched in 3000m.
5.2 The waterproof sheet shall be inspected batch by batch in accordance with the provisions of 3.1 and 3.3. 5.3 Factory inspection of waterproof sheets. Choose one specification from each batch of products for physical property test. a.
Each batch shall be tested according to the provisions of 1 to 3 in Table 3. HG2402-92
b. Items 4 to 9 in Table 3 shall be tested once every six months. 5.4 Type inspection of waterproof sheets shall be carried out according to the provisions of 3.1, 3.2 and 3.3 (comprehensive inspection). 5.5 Sampling
Randomly select 3 rolls from a batch, first inspect according to 3.1 and 3.3, then randomly select qualified rolls and test them according to the sampling method of 4.3.4 and the items listed in 3.2.
5.6 Judgment rules
5.6.1 For the items specified in 3.1 and 3.3, all 3 rolls meet the corresponding requirements at the same time, and the batch can be judged as first-class products; for qualified products, if two items in each roll are unqualified, it is an unqualified roll. If there are 2 or more unqualified rolls, the batch is judged as unqualified. If there are 2 or more qualified rolls, and the performance of 3.2 meets the requirements, the batch is qualified. 5.6.2 For the physical properties in 5.3 and 5.4, first-class products should all meet the corresponding requirements at the same time, and re-testing is not allowed; for qualified products, if one item is unqualified, double samples should be taken for re-testing of the unqualified items. If the re-test results are still unqualified, the batch is unqualified.
6 Marking, packaging, transportation, purchase and storage
Waterproof sheets are packed in rolls with paper cores or other core types, and are tightly rolled with moisture-proof paper. 6.2
Each package should have the following markings:
Manufacturer name;
Product name and trademark;
Batch number and production date;
Product specifications;
Standard number:
Inspection pass stamp
6.3 Waterproof sheets should be stored in a warehouse at -15~35℃. 6.4 During the storage and transportation of waterproof sheets, care should be taken not to damage the packaging, and the sheets should be placed in a ventilated and dry place to avoid direct sunlight and prohibited from contact with acids, alkalis, oils and organic solvents. When stacking, they should be padded with flat wooden boards, 20cm above the ground. 6.5 Under the above conditions, the performance of waterproof sheets should comply with the provisions of this standard within a storage period of no more than 1 year from the date of manufacture. A1 Test Instrument
HG2402-
Appendix A
Test for Heating and Expanding Volume of Waterproof Sheet
(Supplement)
A1.1 The scale accuracy of measuring expansion and contraction shall not be less than 0.5mm. A1.2 Aging Test Chamber.
A2 Test Conditions
The storage time of the sample and the test temperature shall meet the following requirements: A2.1 The time from sample preparation to test is 24h. A2.2 The test chamber temperature is controlled within the range of 23±2℃. A3 Test Procedure
The sample is placed in an aging chamber at 80±2℃ according to the specifications and dimensions of Figure A1; the time is 168h, the sample is taken out and stored for 1h, the length of the sample is measured with a measuring tool, and the expansion and contraction is calculated based on the initial length. According to the longitudinal and transverse directions, the average value of three specimens is used to represent the expansion and contraction.
Note: If the specimen is bent, it is necessary to apply an appropriate weight to flatten it. Measuring block
B1 Test instrument
B1.1 The accuracy of the measuring tool shall not be less than 0.5mm
HG2402-92
Appendix B
Test for adhesive performance of waterproof sheet
(Supplement)
B1.2 The holder of the specimen shall be able to pull the spacing between the specimen markings to 140mm. B2 Test conditions
The temperature of the test room shall be controlled within the range of 23±2. B3 Preparation
Adhesive and bonding method According to the requirements of the manufacturer, two specimens are bonded with an overlap of 100mm in the calendering direction. The parking time is 168h.
Figure B1 shows a specimen marked with a reference line and a marking line. B4 Sample treatment
B4.1 Heating treatment
Put the sample prepared in B3 into an aging box at a temperature of 80±2C for 168h. Take out the sample and leave it for 4h. B4.2 Alkali treatment
Put the sample prepared in B3 into a 10% calcium hydroxide solution and soak it for 168h. Leave it for 4h after soaking. B5 Test procedure
Clamp the sample with an overlap length of 100mm along the marking line with a clamp, stretch the overlap part from 100mm to 140mm, and leave it for 24h. Then remove the sample and leave it for 1h. Then measure the deviation of the end of the overlap part of the sample from the reference line and the disengagement length. B6 Judgment
The sample is qualified if the deviation of the reference line and the disengagement length are less than 5mm. Marking line
Joint center line
Base line
C1 Test instrument
C1.1 Aging test chamber.
HG2402-92
Appendix C
Thermal aging test of waterproof sheet
(Supplement)
C1.2 The sample holder should be able to stretch the sample to 100% elongation between marking lines. C2 Test conditions
The test room temperature is controlled within the range of 23±2℃, C3 Test procedure
Clamp the sample with the sample fixture and stretch it to 100% elongation and fix it. The parking time is 24h. Then put the sample and the fixture into the aging chamber with a temperature of 80±2℃ for 168h. Take out the sample and the fixture together. The parking time is 4h. Observe whether the sample has cracks.
C4 judgment
Observe the sample surface with a 4-7 times magnifying glass. All samples are qualified if there is no crack. Additional instructions:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute. This standard is drafted by Beijing Rubber Products Design Institute and Baoding Rubber Factory No. 1. The main drafters of this standard are Wang Shuzhen and Lou Huanda. This standard refers to the Japanese Industrial Standard JISA6008-86 "Synthetic Polymer Roof Waterproof Sheet". 10
People's Republic of China
Chemical Industry Standard
Roof Rubber Waterproof Material
EPDM Sheet
HG2402-92
Editor: Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer: Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Printing Sheet: 4 Characters: 20000 Edition: March 1993
First Printing: March 1993
Print Quantity: 1-5003. For the specified items, all three rolls must meet the corresponding requirements at the same time, and the batch can be judged as first-class products; for qualified products, if two items in each roll are unqualified, it is an unqualified roll. If there are 2 or more unqualified rolls, the batch is judged as unqualified. If there are 2 or more qualified rolls and the performance of Article 3.2 meets the requirements, the batch is qualified. 5.6.2 For the physical properties in 5.3 and 5.4, first-class products should all meet the corresponding requirements at the same time, and re-testing is not allowed; for qualified products, if one item is unqualified, double samples should be taken for re-testing of the unqualified items. If the re-test result is still unqualified, the batch of products is unqualified.
6 Marking, packaging, transportation, purchase and storage
Waterproof sheets are packed in rolls with paper cores or other core types, and are tightly rolled with moisture-proof paper. 6.2
Each package should have the following markings:
Manufacturer name;
Product name and trademark;
Batch number and production date;
Product specifications;
Standard number:
Inspection pass stamp
6.3 Waterproof sheets should be stored in a warehouse at -15~35℃. 6.4 During the storage and transportation of waterproof sheets, care should be taken not to damage the packaging, and the sheets should be placed in a ventilated and dry place to avoid direct sunlight and prohibited from contact with acids, alkalis, oils and organic solvents. When stacking, they should be padded with flat wooden boards, 20cm above the ground. 6.5 Under the above conditions, the performance of waterproof sheets should comply with the provisions of this standard within a storage period of no more than 1 year from the date of manufacture. A1 Test Instrument
HG2402-
Appendix A
Test for Heating and Expanding Volume of Waterproof Sheet
(Supplement)
A1.1 The scale accuracy of measuring expansion and contraction shall not be less than 0.5mm. A1.2 Aging Test Chamber.
A2 Test Conditions
The storage time of the sample and the test temperature shall meet the following requirements: A2.1 The time from sample preparation to test is 24h. A2.2 The test chamber temperature is controlled within the range of 23±2℃. A3 Test Procedure
The sample is placed in an aging chamber at 80±2℃ according to the specifications and dimensions of Figure A1; the time is 168h, the sample is taken out and stored for 1h, the length of the sample is measured with a measuring tool, and the expansion and contraction is calculated based on the initial length. According to the longitudinal and transverse directions, the average value of three specimens is used to represent the expansion and contraction.
Note: If the specimen is bent, it is necessary to apply an appropriate weight to flatten it. Measuring block
B1 Test instrument
B1.1 The accuracy of the measuring tool shall not be less than 0.5mm
HG2402-92wwW.bzxz.Net
Appendix B
Test for adhesive performance of waterproof sheet
(Supplement)
B1.2 The holder of the specimen shall be able to pull the spacing between the specimen markings to 140mm. B2 Test conditions
The temperature of the test room shall be controlled within the range of 23±2. B3 Preparation
Adhesive and bonding method According to the requirements of the manufacturer, two specimens are bonded with an overlap of 100mm in the calendering direction. The parking time is 168h.
Figure B1 shows a specimen marked with a reference line and a marking line. B4 Sample treatment
B4.1 Heating treatment
Put the sample prepared in B3 into an aging box at a temperature of 80±2C for 168h. Take out the sample and leave it for 4h. B4.2 Alkali treatment
Put the sample prepared in B3 into a 10% calcium hydroxide solution and soak it for 168h. Leave it for 4h after soaking. B5 Test procedure
Clamp the sample with an overlap length of 100mm along the marking line with a clamp, stretch the overlap part from 100mm to 140mm, and leave it for 24h. Then remove the sample and leave it for 1h. Then measure the deviation of the end of the overlap part of the sample from the reference line and the disengagement length. B6 Judgment
The sample is qualified if the deviation of the reference line and the disengagement length are less than 5mm. Marking line
Joint center line
Base line
C1 Test instrument
C1.1 Aging test chamber.
HG2402-92
Appendix C
Thermal aging test of waterproof sheet
(Supplement)
C1.2 The sample holder should be able to stretch the sample to 100% elongation between marking lines. C2 Test conditions
The test room temperature is controlled within the range of 23±2℃, C3 Test procedure
Clamp the sample with the sample fixture and stretch it to 100% elongation and fix it. The parking time is 24h. Then put the sample and the fixture into the aging chamber with a temperature of 80±2℃ for 168h. Take out the sample and the fixture together. The parking time is 4h. Observe whether the sample has cracks.
C4 judgment
Observe the sample surface with a 4-7 times magnifying glass. All samples are qualified if there is no crack. Additional instructions:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute. This standard is drafted by Beijing Rubber Products Design Institute and Baoding Rubber Factory No. 1. The main drafters of this standard are Wang Shuzhen and Lou Huanda. This standard refers to the Japanese Industrial Standard JISA6008-86 "Synthetic Polymer Roof Waterproof Sheet". 10
People's Republic of China
Chemical Industry Standard
Roof Rubber Waterproof Material
EPDM Sheet
HG2402-92
Editor: Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer: Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Printing Sheet: 4 Characters: 20000 Edition: March 1993
First Printing: March 1993
Print Quantity: 1-5003. For the specified items, all three rolls must meet the corresponding requirements at the same time, and the batch can be judged as first-class products; for qualified products, if two items in each roll are unqualified, it is an unqualified roll. If there are 2 or more unqualified rolls, the batch is judged as unqualified. If there are 2 or more qualified rolls and the performance of Article 3.2 meets the requirements, the batch is qualified. 5.6.2 For the physical properties in 5.3 and 5.4, first-class products should all meet the corresponding requirements at the same time, and re-testing is not allowed; for qualified products, if one item is unqualified, double samples should be taken for re-testing of the unqualified items. If the re-test result is still unqualified, the batch of products is unqualified.
6 Marking, packaging, transportation, purchase and storage
Waterproof sheets are packed in rolls with paper cores or other core types, and are tightly rolled with moisture-proof paper. 6.2
Each package should have the following markings:
Manufacturer name;
Product name and trademark;
Batch number and production date;
Product specifications;
Standard number:
Inspection pass stamp
6.3 Waterproof sheets should be stored in a warehouse at -15~35℃. 6.4 During the storage and transportation of waterproof sheets, care should be taken not to damage the packaging, and the sheets should be placed in a ventilated and dry place to avoid direct sunlight and prohibited from contact with acids, alkalis, oils and organic solvents. When stacking, they should be padded with flat wooden boards, 20cm above the ground. 6.5 Under the above conditions, the performance of waterproof sheets should comply with the provisions of this standard within a storage period of no more than 1 year from the date of manufacture. A1 Test Instrument
HG2402-
Appendix A
Test for Heating and Expanding Volume of Waterproof Sheet
(Supplement)
A1.1 The scale accuracy of measuring expansion and contraction shall not be less than 0.5mm. A1.2 Aging Test Chamber.
A2 Test Conditions
The storage time of the sample and the test temperature shall meet the following requirements: A2.1 The time from sample preparation to test is 24h. A2.2 The test chamber temperature is controlled within the range of 23±2℃. A3 Test Procedure
The sample is placed in an aging chamber at 80±2℃ according to the specifications and dimensions of Figure A1; the time is 168h, the sample is taken out and stored for 1h, the length of the sample is measured with a measuring tool, and the expansion and contraction is calculated based on the initial length. According to the longitudinal and transverse directions, the average value of three specimens is used to represent the expansion and contraction.
Note: If the specimen is bent, it is necessary to apply an appropriate weight to flatten it. Measuring block
B1 Test instrument
B1.1 The accuracy of the measuring tool shall not be less than 0.5mm
HG2402-92
Appendix B
Test for adhesive performance of waterproof sheet
(Supplement)
B1.2 The clamp of the specimen shall be able to pull the spacing between the specimen marking lines to 140mm. B2 Test conditions
The temperature of the test room shall be controlled within the range of 23±2. B3 Preparation
Adhesive and bonding method According to the requirements of the manufacturer, the two specimens are overlapped 100mm along the calendering direction and bonded. The parking time is 168h.
Figure B1 shows the specimen marked with the reference line and marking line. B4 Sample treatment
B4.1 Heating treatment
Put the sample prepared in B3 into an aging box at a temperature of 80±2C for 168h. Take out the sample and leave it for 4h. B4.2 Alkali treatment
Put the sample prepared in B3 into a 10% calcium hydroxide solution and soak it for 168h. Leave it for 4h after soaking. B5 Test procedure
Clamp the sample with an overlap length of 100mm along the marking line with a clamp, stretch the overlap part from 100mm to 140mm, and leave it for 24h. Then remove the sample and leave it for 1h. Then measure the deviation of the end of the overlap part of the sample from the reference line and the disengagement length. B6 Judgment
The sample is qualified if the deviation of the reference line and the disengagement length are less than 5mm. Marking line
Joint center line
Base line
C1 Test instrument
C1.1 Aging test chamber.
HG2402-92
Appendix C
Thermal aging test of waterproof sheet
(Supplement)
C1.2 The sample holder should be able to stretch the sample to 100% elongation between marking lines. C2 Test conditions
The test room temperature is controlled within the range of 23±2℃, C3 Test procedure
Clamp the sample with the sample fixture and stretch it to 100% elongation and fix it. The parking time is 24h. Then put the sample and the fixture into the aging chamber with a temperature of 80±2℃ for 168h. Take out the sample and the fixture together. The parking time is 4h. Observe whether the sample has cracks.
C4 judgment
Observe the sample surface with a 4-7 times magnifying glass. All samples are qualified if there is no crack. Additional instructions:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute. This standard is drafted by Beijing Rubber Products Design Institute and Baoding Rubber Factory No. 1. The main drafters of this standard are Wang Shuzhen and Lou Huanda. This standard refers to the Japanese Industrial Standard JISA6008-86 "Synthetic Polymer Roof Waterproof Sheet". 10
People's Republic of China
Chemical Industry Standard
Roof Rubber Waterproof Material
EPDM Sheet
HG2402-92
Editor: Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer: Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Printing Sheet: 4 Characters: 20000 Edition: March 1993
First Printing: March 1993
Print Quantity: 1-5002 Alkali treatment
Put the sample prepared in B3 into a 10% calcium hydroxide solution for 168 hours. After soaking, stand for 4 hours. B5 Test procedure
Clamp the sample with an overlap length of 100mm along the marking line with a clamp, stretch the overlap part from 100mm to 140mm, and stand for 24 hours. Then remove the sample, stand for 1 hour, and then measure the deviation of the end of the overlap part of the sample from the reference line and the disengagement length. B6 Judgment
The deviation of the reference line and the disengagement length in the sample is less than 5mm, which is qualified. Marking line
Joining center line
Reference line
C1 Test instrument
C1.1 Aging test chamber.
HG2402-92
Appendix C
Waterproof sheet heat aging test
(Supplement)
C1.2 The sample holder should be able to stretch the sample between the marking lines to 100% elongation. C2 Test conditions
The test room temperature is controlled within the range of 23±2℃, C3 Test procedures
Use the sample fixture to clamp the sample and stretch it to 100% elongation. The parking time is 24h. Then put the sample and the fixture into the aging box with a temperature of 80±2℃ for 168h. Take out the sample and the fixture together. The parking time is 4h. Observe whether the sample has cracks,
C4 Judgment
Use a 4-7 times magnifying glass to observe the sample surface. All samples are qualified if there is no crack. Additional instructions:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute, and was drafted by Beijing Rubber Products Design Institute and Baoding Rubber Factory No. 1. The main drafters of this standard are Wang Shuzhen and Lou Huanda. This standard refers to the Japanese Industrial Standard JISA6008-86 "Synthetic Polymer Roof Waterproof Sheet". 10
People's Republic of China
Chemical Industry Standard
Roof Rubber Waterproof Material
EPDM Sheet
HG2402-92
Editor: Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer: Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Printing Sheet: 4 Characters: 20000 Edition: March 1993
First Printing: March 1993
Print Quantity: 1-5002 Alkali treatment
Put the sample prepared in B3 into a 10% calcium hydroxide solution for 168 hours. After soaking, stand for 4 hours. B5 Test procedure
Clamp the sample with an overlap length of 100mm along the marking line with a clamp, stretch the overlap part from 100mm to 140mm, and stand for 24 hours. Then remove the sample, stand for 1 hour, and then measure the deviation of the end of the overlap part of the sample from the reference line and the disengagement length. B6 Judgment
The deviation of the reference line and the disengagement length in the sample is less than 5mm, which is qualified. Marking line
Joining center line
Reference line
C1 Test instrument
C1.1 Aging test chamber.
HG2402-92
Appendix C
Waterproof sheet heat aging test
(Supplement)
C1.2 The sample holder should be able to stretch the sample between the marking lines to 100% elongation. C2 Test conditions
The test room temperature is controlled within the range of 23±2℃, C3 Test procedures
Use the sample fixture to clamp the sample and stretch it to 100% elongation. The parking time is 24h. Then put the sample and the fixture into the aging box with a temperature of 80±2℃ for 168h. Take out the sample and the fixture together. The parking time is 4h. Observe whether the sample has cracks,
C4 Judgment
Use a 4-7 times magnifying glass to observe the sample surface. All samples are qualified if there is no crack. Additional instructions:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Beijing Rubber Products Design Institute, and was drafted by Beijing Rubber Products Design Institute and Baoding Rubber Factory No. 1. The main drafters of this standard are Wang Shuzhen and Lou Huanda. This standard refers to the Japanese Industrial Standard JISA6008-86 "Synthetic Polymer Roof Waterproof Sheet". 10
People's Republic of China
Chemical Industry Standard
Roof Rubber Waterproof Material
EPDM Sheet
HG2402-92
Editor: Chemical Industry Standard Editorial Department
(Standardization Research Institute of Ministry of Chemical Industry)
Postal Code: 100013
Printer: Standardization Research Institute of Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
Format: 880×12301/16 Printing Sheet: 4 Characters: 20000 Edition: March 1993
First Printing: March 1993
Print Quantity: 1-500
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