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High-oil-resistance ethylene propylene diene monomer rubber composition

A technology of EPDM rubber and oil resistance, applied in the rubber field, can solve problems such as poor oil resistance, and achieve the effect of improving oil aging resistance and good oil resistance.

Inactive Publication Date: 2015-03-04
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] EPDM rubber is widely used in automobile internal fluid pipelines because of its good high temperature resistance, ozone resistance, and good processing performance. It has been used for a long time, but the oil resistance of saturated non-polar EPDM rubber is poor. After contacting with engine oil, the volume expansion rate is 70% to 150%, the hardness decreases to 50% to 80%, and the tensile strength decrease rate is 60% to 80%, improving the oil resistance of EPDM rubber has also become a new direction for the research and development of EPDM rubber in recent years

Method used

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  • High-oil-resistance ethylene propylene diene monomer rubber composition
  • High-oil-resistance ethylene propylene diene monomer rubber composition
  • High-oil-resistance ethylene propylene diene monomer rubber composition

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Experimental program
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Embodiment Construction

[0012] Embodiment of high oil resistance EPDM composition:

[0013] In the present invention, the EPDM rubber with a Mooney viscosity of 60-70 and an ethylene content of 60%-80% is selected, and the potter's clay with an oil absorption value less than 30ml / 100g and silicon oxyhydroxide is used.

[0014] In parts by mass:

[0015]

[0016]

[0017] According to the raw materials in the embodiment formula, the film is made into a film for testing and detection, and the properties of the high oil-resistant EPDM rubber are as follows:

[0018]

[0019]

[0020] Use EPDM rubber with a Mooney viscosity of 60-70 and an ethylene content of 60%-80%. EPDM rubber with surface-modified clay and silicon oxide instead of part of carbon black as reinforcing agent, resistant to engine oil aging condition 3# engine oil 125℃×72h, hardness decreased within 15%, tensile strength decreased within 25%, The volume expansion is within 15%, and the oil aging resistance performance is obv...

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Abstract

The invention relates to a high-oil-resistance ethylene propylene diene monomer rubber composition which comprises 100 parts of unvulcanized ethylene propylene diene monomer rubber, 3-5 parts of zinc oxide, 1-3 parts of polyethyleneglycol, 1-3 parts of coumarone, 1-3 parts of stearic acid, 0.5-2.0 parts of anti-aging agent RD, 10-50 parts of carbon black N550, 100-150 parts of argil, 10-50 parts of silicon oxide, 1-5 parts of silane coupling agent, 0.5-1.5 parts of accelerator M, 1.5-2.5 parts of accelerator CZ, 0.5-1.5 parts of accelerator TMTD (tetramethyl thiuram disulfide), 0.8-2.0 parts of accelerator DTDM and 0.5-1.5 parts of vulcanizing agent. The high-oil-resistance ethylene propylene diene monomer rubber composition has excellent machine oil aging resistance, and can keep certain mechanical properties, resilience and dimensional stability under the conditions of contact with machine oil.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to a high oil resistance EPDM composition. Background technique [0002] With the increase in per capita income in recent years, cars have gradually entered the family as people's preferred travel tool, which has brought about the rapid development of the automotive industry in recent years, and the competition in the automotive industry has become increasingly fierce. The performance requirements of the materials used in rubber hoses are becoming more and more stringent. [0003] EPDM rubber is widely used in automobile internal fluid pipelines because of its good high temperature resistance, ozone resistance, and good processing performance. It has been used for a long time, but the oil resistance of saturated non-polar EPDM rubber is poor. After contacting with engine oil, the volume expansion rate is 70% to 150%, the hardness decreases to 50% to 80%, and the tensile strength dec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/06C08K9/06C08K3/22C08K5/09C08K3/04C08K3/34C08K3/36
CPCC08L23/16C08L2201/08C08L2205/03C08L71/02C08L45/02C08K13/02C08K2003/2296C08K5/09C08K3/04C08K3/346C08K3/36
Inventor 张洪起薛俊芳谢非
Owner TIANJIN PENGYI GRP CO LTD
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