Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T2196--i91
Rubber Materials for Motor Vehicles
Published on December 23, 1991
Ministry of Chemical Industry of the People's Republic of China
Precision Network Change.banno.con1992-12-01Implementation
Chemical Industry Standard of the People's Republic of China
Rubber Materials for Motor Vehicles
1 Subject Content and Scope of Application
HG/T2196-91
This standard specifies the classification, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage requirements of vulcanized rubber materials for motor vehicles.
This standard applies to vulcanized rubber materials for motor vehicles such as automobiles, tractors, railway locomotives, motorcycles, and also to rubber materials for other similar occasions.
: This standard does not apply to tires, sponges and hard rubber materials. 2 Reference standards
Determination of tensile properties of vulcanized rubber
Determination of tear strength of vulcanized rubber (trouser-shaped, right-angled and crescent-shaped test specimens) GB529
GB1681
GB1682
Test method for Shore A hardness of rubber
Determination of rebound resilience of vulcanized rubber
Test method for brittle temperature of vulcanized rubber
GB1690
GB2828
Test method for liquid resistance of vulcanized rubber
Batch inspection counting sampling procedure and sampling Table (applicable to inspection of continuous batches) Standard temperature, humidity and time for environmental conditioning and testing of rubber specimens GB/T2941
Rubber atmospheric aging test method
GB3511
GB3512
GB3672
GB5721
GB5722
GB5723
GB6031
GB6032
GB7529
GB7759
GB7760||tt| |GB7762
GB9865
GB9866
Test method for hot air aging of rubber
Dimensional tolerance of rubber products
General provisions for marking, packaging and transportation of rubber sealing productsGeneral provisions for storage of rubber sealing products
General provisions for dimensional measurement of test pieces and products for vulcanized rubber testingDetermination of the international hardness of vulcanized rubber (30~85IRHD)Conventional test methodDetermination of the international hardness of vulcanized rubber (30~85IRHD)Micro test methodAppearance quality of molded and extruded rubber products General provisions of vulcanized rubberDetermination of compression set under constant deformation at room temperature and high temperatureDetermination of adhesion between vulcanized rubber and metalSingle plate methodOzone aging test for vulcanized rubberStatic tensile testPreparation of vulcanized rubber samples and test specimens
Determination of hardness of low hardness vulcanized rubber (10~35IRHD)GB11207
GB11211
Determination of hardness of high hardness (85~100IRHD) vulcanized rubberDetermination of adhesion strength between vulcanized rubber and metalTensile methodApproved by the Ministry of Chemical Industry of the People's Republic of China on December 23, 1991 Standard m.bc8060.ccm Various standards industry data free download 1992-12-01 implementation
HG/T2196-91
3.1 Codes for basic physical properties and special requirements H-hardness, IRHD or Shore A, degrees; - hardness change, IRHD or degrees;
T-tensile strength (minimum), MPa;
AT-tensile strength change rate, %;
E-breaking elongation (minimum), %;
AE-breaking elongation change rate, %; | |tt||Compression set, B-type specimen (maximum), %; B-
-Volume change rate, %;
-This requirement is applicable and shall be implemented by agreement between the supply and demand parties, and data shall be accumulated;-Special requirements and test methods that need to be specified in detail, heat resistance, hot air aging code
A13-70C×70h;
-100℃×70h;
A15—-125C×70h;
A1-10-
A1-11-
150cx70h;||tt ||175℃×70h;
200℃×70h;
225℃×70h
250c×70h;
275℃×70h;
—70×7d;
-150c×7d.
Code for compression set (in air, integral B-type specimen) 3.3
-70×22h;
B14——100C×.22h;
B15—-125C×22h;
—150℃× 22h;
-175cx22h;
-200c×22h;
100×70h;
-150℃×70h;
B28—
-200×70h,
Code for ozone resistance and weather resistance
-Ozone concentration 50pphm, pre-stretching 20%, 40℃×70h; ozone concentration 200pphm, pre-stretching 20%, 40℃×70h; ozone concentration 1000pphm, pre-stretching 20%, 40℃×70h. Note: Under standard conditions, 1pphm ozone concentration is equivalent to 1.01MPa ozone partial pressure. Ck ozone cracking, grade;
Pk—the performance change rate of ozone aging rubber materials (generally refers to tensile strength and elongation at break), that is, the aging rate, %; C.20 atmospheric aging;
standard specification network: mm.baaoso.com various standard industry information free download HG/T-2196-91
Pc the degree of appearance change of atmospheric aging rubber materials, grade, 3.5 stress relaxation, mite code D
3.6 resistance Liquidity code
3.6.1EA14——Water, 100×70h;
EA12-—Equal volume of water and ethylene glycol, 100℃×70h;EA24———Water, 100C×7d.
3.6.2EF11——Fuel A (hydroxyl), 23×70h;EF21———Fuel B (hydrocarbon), 23×70h;EF31-
3.6.3EO14-
Fuel C (hydrocarbons), 23℃×70h
-Fuel C+anhydrous ethanol (85:15 volume ratio), 23T×70h;-Fuel D+anhydrous ethanol (85:15 volume ratio), 23℃×70h;-No. 1 standard oil (oil, grease), 100C×70h;-No. 1 standard oil (oil, grease), 125℃×70h;-No. 1 standard oil (oil, grease), 150℃×70h;--No. 3 standard oil (oil, grease), 70℃×70 h;EO33-
-3 standard oil (oil, grease), 100×70h;-3 standard oil (oil, grease), 125℃×70h-3 standard oil (oil, grease), 150℃×70h;-100 working fluid, 125℃×70h;
3.6.4EO85
E086—100 working fluid, 150C×70h;E078——101 working fluid, 200℃×70h. 3.7 Low temperature brittleness (no cracking after 3min at a certain temperature) code F13-
-(-10)C or less;
(-18) or less;
—(-25) or less;
F16-——(-35) C or less;
F17——(-40)C or less;
F18—(-50)C or less;
F19———(-55)C or less;
-(-75)C or less.
F1-11-
3.8 Tear resistance code
-Tear strength (crescent), kN/m; G11-
G21-——Tear strength (right angle), kN/m3.9 Tear resistance Code for flex cracking H
3.10, code for wear resistance J
3.11 Code for adhesionwwW.bzxz.Net
-adhesion strength, MPa;
-peel strength, kN/m
3.12 Code for flame resistance M
3.13 Code for impact resistance N
3.14 Code for pollution and corrosion
P2-pollution, 23C×7d.
Standard gauge: mm.baaoso.com Various standard industry materials are available for download for free. 3.15 Code for rebound
4 Classification
- Rebound value,%.
4.1 Principles of material classification
HG/T2196-91
Rubber materials are divided into 20 categories according to their inherent heat resistance and oil resistance. The codes of various materials are listed in Appendix A. 4.1.1 Type (heat resistance) and grade (oil resistance) 4:1.1.1 The type of rubber material is determined based on the hardness change of no more than ±15IRHD, the tensile strength change of no more than ±30%, and the elongation change of no more than -50% after 70h hot air aging at a certain appropriate temperature. The test temperatures used to determine the types of various materials are listed in Table 1.
Table 1 Hot air aging temperature for determining the type of rubber material Class
Test temperature
Test temperature
The grade of rubber material is determined based on the swelling value of the material after immersion in No. 3 standard oil at a certain temperature not exceeding 150C after 7014.1.1.2
(150℃ is the limit temperature of the stability of No. 3 oil). The swelling limit values for determining the material grade are listed in Table 2. Table 2 Volume swelling limit values for determining the grade of rubber material Grade
Volume swelling (maximum)
(AV) %
Volume swelling (maximum)
4.1.2 Physical properties
41.2.1 Basic requirements for the physical properties of materials, including type, grade, hardness (H), tensile strength (T), elongation at break), compression set (B), AH, AT, AE after hot air aging, and volume swelling value in No. 3 oil (Av). H, T, E, and B are called basic physical properties, and the basic physical properties are listed in Table 3 with codes. Standards.com.cn.baoo.cm Various standards and industry materials are available for free download. H, IRHD
HG/T2196
Table 3, Basic physical properties code of rubber materials T, MPa
(minimum)
(minimum)
B, Type temperature 22 h, %
(maximum)
Grade number is the number used to indicate additional requirements when the basic requirements are not enough to reflect the quality requirements that the material must have. 4.1.2.2 Additional performance requirements of materials are expressed by different grade numbers. Grade number is an integer from 1 to 9, where grade number 1 means only basic requirements and no additional requirements.
4.2 Marking
4.2.1 Rubber materials shall be marked by type, grade, basic physical properties, grade number and standard number. Example:
2HG/T2196
Standard number.
Grade number: Grade 2
Compression permanent deformation: 50%, maximum
Elongation at break: 250%, minimum
Tensile strength: 10MPa, minimum
Hardness: 70±5IRHD
CHMaterial grade (oil resistance)
CHMaterial type (heat resistance)
4.2.2When the standard number is known, it can be marked with "type, grade, basic physical properties, grade number\". 5 Technical requirements
5.1 Manufacturing quality of materials
5.1.1 The rubber materials specified in this standard can be made of natural rubber, recycled rubber, synthetic rubber, thermoplastic elastomer, rubber-plastic combination, etc., either alone or in combination, and can be matched and manufactured according to the specified requirements. The raw materials used and their manufacturing processes shall comply with the relevant specifications and requirements. Products shall be manufactured in accordance with the specified technical documents or drawings and their process specifications, and shall not have defects that affect the performance, such as holes, cracks, bubbles, impurities, etc. Except for special circumstances, the appearance quality shall comply with the provisions of GB7529. 5.1.2 Dimensional tolerances shall comply with the provisions of GB3672. In special circumstances, they shall be agreed upon by the supply and demand parties. 5.1.3 The physical property values of rubber materials specified in this standard, except for FC, FE, FK, and GE materials, are all taken from black materials. Whether it is a standard specimen prepared from rubber or a standard specimen taken from a product, the test results shall comply with this standard. The requirements specified in the standard. Among them, for the test specimens taken from the products, only the tensile strength and elongation at break are allowed to be reduced by 10%. For materials with hardness levels of 30, 40, and 90 IRHD, the compression deformation value can be agreed upon by the supply and demand parties when necessary. The Shore A hardness can be used to appropriately relax the hardness requirements, but the arbitration must use the international hardness. 5.2 Physical properties of materials
The physical property requirements of various rubber materials are listed in Table 4.6 Test methods
6.1 Appearance quality
The appearance quality of the material shall be tested according to the method specified in GB5723 or the visual method. 6.2 Dimensional tolerance
Dimensional tolerance shall be measured according to the method specified in GB3672 or according to GB5723. 6.3 Physical properties
The measurement of hardness shall be in accordance with GB6031 or G B6032 or GB9866 or GB11207 or GB531. The determination of tensile strength and elongation at break shall be carried out in accordance with GB528. The determination of compression permanent deformation shall be carried out in accordance with GB7759. The atmospheric aging test shall be carried out in accordance with GB3511. The hot air aging test shall be carried out in accordance with GB3512. The liquid resistance test shall be carried out in accordance with GB1690: The ozone aging test shall be carried out in accordance with GB7762. The low temperature brittleness test shall be carried out in accordance with GB1682. The adhesion strength shall be measured in accordance with GB7760 or 11211, and the tear strength shall be measured in accordance with GB529. The contamination test shall be carried out in accordance with Appendix B of GB5726. The resilience test shall be carried out in accordance with GB1681. The preparation of the sample shall be carried out in accordance with GB9865. The state adjustment of the test specimen shall be carried out in accordance with the provisions of GB/T2941. 7 Inspection rules
7.1 Inspection classification
7.1.1 Type inspection
When one of the following situations occurs, type inspection should generally be carried out, that is, all relevant requirements specified in this standard shall be inspected, and new products or old products shall be transferred to the factory for trial production and identification; a.
After formal production, if there are major changes in structure, materials, and processes that may affect product performance; b,
c. "During normal production, an inspection should be carried out periodically or after a certain amount of output has been accumulated; d. When the product is resumed after a long period of suspension; when there is a large difference between the factory inspection result and the last type inspection; e
, "When the national quality supervision agency proposes the requirement for type inspection, Z1-22: Factory inspection
Standard Investment Network b2866.c0 Free download of various standard industry materials HG/T219691
When delivering the goods, various inspections must be carried out, and their items and rules are specified by the specific product standards or agreed upon by the supply and demand parties. 7.1.3 Periodic inspection
In order to ensure quality and efficiency, certain items may be required to be inspected within a certain period of time. According to the specific circumstances, full inspection, random inspection and inspection frequency regulations shall be made for all required items. 7.2 Sampling plan
When conducting random inspections, the sampling plan shall generally be implemented in accordance with the provisions of GB2828. 7.3 Re-test rules
When the rubber material inspection items are unqualified, except for the dimensional tolerance, double samples can be taken for re-testing (appearance defects that can be repaired are allowed to be repaired once and then re-tested). If the re-test result is still unqualified, it is a defective product. If there are special circumstances, it shall be agreed upon by the supply and demand parties.
7.4 Simulation or bench performance inspection
Simulation or bench test performance inspection shall be carried out in accordance with special methods and inspection procedures or agreed upon by the supply and demand parties. 7.5 Inspection responsibility and rejection
7.5.1 The manufacturer shall be responsible for completing the specified tests. And provide the results to the purchaser in accordance with the specified requirements. The purchaser has the right to conduct inspections when it deems it necessary to ensure that the product meets the requirements of this standard. 7.5.2 Any rubber material that does not meet this standard or does not meet the agreement between the supply and demand parties may be rejected. If there is a dispute between the two parties, the arbitration unit shall make a ruling.
8 Marking, packaging, transportation and storage
8.1 The marking, packaging and transportation of rubber materials shall comply with the provisions of GB5721; in special cases, the supply and demand parties shall agree on this. 8.2 The storage of rubber materials shall comply with the provisions of GB5722. 8.3 In compliance with 8.1 and 8.In the 2nd case, the storage period of the rubber compound should be 3 months or 6 months: the storage period of the finished product should be at least 2 years. Rubber materials that exceed the storage period should be qualified after full performance inspection before use. Standard exchange control network cb2080-ccm various British standard industry data free download basic physical properties basic requirements No. 3 oil heat resistance, A13 HGT ZI96-9I Table 4-1AA rubber material Applicable grade 2, 3, 4, 5 2, 3, 4, 5 2.3, 4, 5 2, ... ,%
Ck, grade, +
C20:Pe, grade, +
F17:-40C
Minimum, MPa
Qualified qualified qualified
Qualified qualified qualified qualified
b8080.ccm standard search
Basic physical properties
Basic requirements
Heat, A13
No. 3 oil
HG/T2196-91
Table 4-2AK rubber materials
Applicable grades
A14:AH,IRHD|| tt||Maximum, %
EO34:AH, IRHD
AE, %
-5~+10
Standard.-3~+5
-3~+10
Basic physical properties
Basic requirements
Heat resistance, A14
No. 3 oil
HG/T2196-91
Table 4-3BA rubber materials
Applicable grades
AHIRHD
2, 3, 4, 5|| tt||2, 3, 4, 5, 6
2, 3, 4, 5
B13: Maximum, %
C12: Ck, grade, +
Pk, %, +
2, 3, 4, 5, 6
2, 3, 4, 5,
2, 3, 4, 5, 6
2, 3, 4, 5
-40℃
-55℃
Minimum, MPa
Minimum, kN/m
Note: After vulcanization, the material should have no surface conditions and components that are harmful or potentially harmful to the adhesive. A0
Standard
Qualified
Basic physical properties
Basic requirements
Heat resistance, A14
±15±30
No. 3 oil
HGET2196
Table 4-4BC rubber materials
Applicable grades
3, 56
3, 6
3, 5, 6
AH, IRHD
AE, %
Maximum, %
Ck, level, +
: Pc, level, +
AH, IRHD
AT, %
4H, IRHD
-40℃
-55℃
—10~+15
-10~+15
Minimum, kN/m
Minimum, MPa
Standard Investment Network b2866.c0 Free download of various standard industry information +15
~+15—10~+15-10~+15
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.