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Diaphragm material applied to electronic brake system and having long anti-fatigue life, and preparation method thereof

An electronic braking and fatigue-resistant technology, applied in the field of composite materials, can solve problems such as affecting service life, insufficient fatigue resistance, fatigue aging, etc., to ensure production efficiency, improve mechanical performance and fatigue resistance, and excellent high temperature fatigue resistance. and tensile fatigue resistance

Inactive Publication Date: 2019-10-22
宁国市普萨斯密封技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the diaphragm is in working condition, due to the need for reciprocating motion and the need to overcome the stress generated between the metal rigid body with which it is assembled, it is prone to fatigue aging, and eventually breaks and fails, seriously affecting its service life
The commonly used material for rubber diaphragms is mainly EPDM rubber, which has excellent chemical stability, but its tensile fatigue resistance and fatigue resistance at extreme high temperatures above 170°C are obviously insufficient
At present, the common fatigue-resistant EPDM materials on the market mainly focus on improving its fatigue resistance and wear resistance, and are not suitable for applications that need to be used at high temperatures, and require a large number of reciprocating movements and overcoming stress between rigid bodies. System Diaphragm Material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A diaphragm material with long fatigue life for electronic brake systems, including the following raw materials in parts by mass: EPDM rubber 70, EPDM rubber 10, filler 30, additive 3, plasticizer 8 , Vulcanizing agent 6; The EPDM rubber is a controllable long-chain branched EPDM rubber, and the ethylene content is 46.9%; the binary ethylene-propylene rubber is a controllable long-chain branched binary ethylene-propylene rubber , the ethylene content is 52.9%.

Embodiment 2

[0022] A diaphragm material with long fatigue life for electronic brake systems, including the following raw materials in parts by mass: 90 parts by mass of EPDM rubber, 10 parts by weight of EPDM rubber, 30 fillers, 5 additives, and 10 plasticizers , vulcanizing agent 8.

[0023] EPDM rubber is controllable long chain branched EPDM rubber with an ethylene content of 46.9%; binary ethylene propylene rubber is a controllable long chain branched binary ethylene propylene rubber with an ethylene content of 52.9%; the filler is The specific surface area is 39m 2 The carbon black of / g; Auxiliary agent comprises reinforcing agent, protective wax and antiaging agent, and the mass ratio of reinforcing agent, protective wax and antiaging agent is 1:1:1; Reinforcing agent is zinc methacrylate, and protective wax is Polyethylene wax, anti-aging agent is 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, plasticizer is naphthenic oil, vulcanizing agent is vulcanizing agent DCP.

[0024] Fi...

Embodiment 3

[0026] A diaphragm material with long fatigue life for electronic braking systems, including the following raw materials in parts by mass: EPDM rubber 80, binary ethylene propylene rubber 20, filler 35, additive 5, plasticizer 9 , vulcanizing agent 7.

[0027] EPDM rubber is controllable long chain branched EPDM rubber with an ethylene content of 48%; binary ethylene propylene rubber is a controllable long chain branched binary ethylene propylene rubber with an ethylene content of 54%; the filler is The specific surface area is 41m 2 The carbon black of / g; Auxiliary agent comprises reinforcing agent, protective wax and antiaging agent, and the mass ratio of reinforcing agent, protective wax and antiaging agent is 1:1:1; Reinforcing agent is zinc methacrylate, and protective wax is Polyethylene wax, anti-aging agent is 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, plasticizer is naphthenic oil, vulcanizing agent is vulcanizing agent DCP.

[0028] First weigh various materia...

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Abstract

The invention discloses a diaphragm material applied to an electronic brake system and having long anti-fatigue life, and a preparation method thereof. The material comprises the following raw materials by mass: 70-90 parts of EPDM, 10 -30 parts of binary ethylene propylene rubber, 30-40 parts of a filler, 3-6 parts of an auxiliary agent, 8-10 parts of a plasticizer and 6-8 parts of a vulcanizingagent, wherein the EPDM is controllable long-chain branched EPDM with an ethylene content of 46.9-51.1%, and the binary ethylene propylene rubber is controllable long-chain branched ethylene-propylenerubber with an ethylene content of 52.9-57.1%. The diaphragm material prepared in the invention has excellent tensile fatigue resistance and high temperature fatigue resistance, and is suitable for application under high temperature working conditions and in a braking system that needs a large amount of reciprocating motion and have to overcome stress between a rigid body and the braking system.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a diaphragm material with long fatigue life for electronic brake systems and a preparation method thereof. Background technique [0002] The rubber diaphragm is the core part of the automobile brake components and plays the role of transmitting pressure. When the diaphragm is in the working state, due to the need for reciprocating motion and the need to overcome the stress generated between the metal rigid body with which it is assembled, it is prone to fatigue and aging, and eventually breaks and fails, which seriously affects its service life. The commonly used material of the rubber diaphragm is mainly EPDM rubber, which has excellent chemical stability, but its tensile fatigue resistance and fatigue resistance at extreme high temperatures above 170°C are obviously insufficient. At present, the common fatigue-resistant EPDM materials on the market mainly focus on ...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/00C08K13/06C08K13/02C08K9/10C08K3/04C08K5/098C08J5/18
CPCC08J5/18C08J2323/16C08J2423/16C08J2491/00C08K3/04C08K5/098C08K9/10C08K13/02C08K13/06C08K2201/006
Inventor 黄宏富方荣平王民飞
Owner 宁国市普萨斯密封技术有限公司
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