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Ethylene-propylene-diene monomer composition with limiting temperature of 175 DEG C for vehicle rubber pipe

A technology of automotive rubber hose and EPDM, which is applied in the direction of hoses, pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as poor heat resistance, achieve extended service life, low volatility, and prevent early burns burning effect

Inactive Publication Date: 2013-01-16
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the automobile cooling system and intake and exhaust system pipelines are made of EPDM composition. The current EPDM composition has poor heat resistance. , EPDM compositions that can reach a high temperature of 160 to 175 degrees in a short period of time are very necessary and have long-term significance

Method used

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  • Ethylene-propylene-diene monomer composition with limiting temperature of 175 DEG C for vehicle rubber pipe
  • Ethylene-propylene-diene monomer composition with limiting temperature of 175 DEG C for vehicle rubber pipe
  • Ethylene-propylene-diene monomer composition with limiting temperature of 175 DEG C for vehicle rubber pipe

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0022] In parts by mass

[0023]

[0024]

[0025] According to the raw materials in the formula in the implementation list, the film is made into a film for testing and testing, and a kind of rubber hose for automobiles with a limit temperature of 175 degrees

[0026] The performance comparison of the EPDM composition formula is as follows:

[0027]

[0028]

[0029] From the data in the above table, it can be concluded that the formulation of an EPDM composition used in automotive rubber hoses with a limit temperature of 175 degrees has excellent heat aging resistance and high temperature resistance, and the performance after 72 hours at a high temperature of 175 degrees is The reduction is small, the change in hardness is kept within 10, and the compression set after high temperature resistance is also low. At the same time, the performance retention rate after oil resistance is also very good, the volume change is within 100%, and the low temperature resistance...

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Abstract

The invention relates to an ethylene-propylene-diene monomer composition with a limiting temperature of 175 DEG C for a vehicle rubber pipe. The ethylene-propylene-diene monomer composition comprises ethylene-propylene-diene monomer rubber, methyl acrylate (Ma)-150, polyethylene glycol, anti-aging agents, carbon black, VM56, high flash point paraffin oil, coupling agent NDZ-130, di(tert-butylperoxy) diisopropyl benzene and assistant crosslinker trimethylopropane trimethacrylate (TMPTMA). According to the formula of the composition, the high temperature resistance is excellent, the performance is slightly reduced after 72 hours under the high temperature of 175 DEG C, the variation in hardness is maintained within 10, the compression set after high temperature resistance is low, simultaneously the performance retention rate after oil resistance is good, the volume change is maintained within 100%, the low temperature resistance is good, the ethylene-propylene-diene monomer composition can be used at the low temperature of 45 DEG C below zero, the ozone resistance is excellent, and the formula can meet requirements of heating system and air intake and exhaust system rubber pipes and intercooler air outlet and radiator flexible pipes which are used at short time under the limiting condition of high temperature of 175 DEG C.

Description

technical field [0001] The invention relates to an EPDM composition for automobile rubber hoses, in particular to an EPDM composition for automobile rubber hoses with a limit temperature of 175 degrees. Background technique [0002] EPDM (ethylene propylene diene monomer) is a rubber with good elasticity, wear resistance, heat resistance, weather resistance, ozone resistance, fresh water and sea water resistance, and has been widely used in rubber products for automobiles. Used in door and window sealing strips, hydraulic brake hoses and sealing rings, air-conditioning ventilation ducts, seals in engine cooling systems and air-conditioning refrigeration systems, hoses for conveying coolant, etc. EPDM rubber is a non-polar, saturated structure. As a "saturated" EPDM, it has excellent heat resistance, ozone resistance and weather resistance, and is widely used to make sealing strips and rubber hoses that are in contact with air and water. [0003] With the rapid development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08K13/02C08K3/04C08K5/14F16L11/04
Inventor 张洪起李智
Owner TIANJIN PENGYI GRP CO LTD
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