Ethylene propylene diene monomer composition with high adhesion and low compression set

Abstract

The invention discloses an ethylene propylene diene monomer composition with high adhesion and low compression set. The composition comprises the following components in parts by weight: 100 parts ofethylene propylene diene monomer rubber, 5-6 parts of zinc oxide, 0.5-1.0 part of stearic acid, 30-50 parts of lignocellulose, 50-70 parts of carbon black, 10-30 parts of white carbon black, 10-30 parts of paraffin oil, 1-2 parts of insoluble sulfur and 2-4 parts of a vulcanization accelerator. The composition does not need to use m-cresol and peroxide vulcanization systems, and has high adhesionand low compression set performance, and the production process is simple and environmentally friendly.

Description

technical field [0001] The invention belongs to the technical field of rubber compositions, in particular to EPDM rubber compositions with high adhesion and low compression set. Background technique [0002] Automotive hydraulic brake hose is a key component of the automotive safety system. The hose requires high adhesion to ensure good adhesion between the rubber and the reinforcement layer to prevent delamination during work; the hose requires low compression set to Ensure good joint crimping performance and prevent head from falling off during work. [0003] The traditional method of improving the adhesive performance of rubber is to adopt sulfur vulcanization system and use m-formaldehyde resin (resorcinol-formaldehyde resin). Hydroxyl and methylene are easy to oxidize and have poor heat resistance, which leads to large compression permanent deformation at the working temperature of the hose (100 ° C ~ 120 ° C); if a peroxide vulcanization system is used, although a low...

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Problems solved by technology

[0003] The traditional method of improving the adhesive performance of rubber is to adopt sulfur vulcanization system and use m-formaldehyde resin (resorcinol-formaldehyde resin). Hydroxyl and methylene are easy to oxidize and have poor heat resistance, which leads to large compression permanent deformation at the working temperature of the hose (100 ° C ~ 120 ° C); if a peroxide vulcanization system is used, although a lower compression permanent Deformation, but due to the inability to form an important sulfide ion interface phase, the meta-formic resin cannot play a role in bonding, and the vulcanization process needs to exhaust oxygen, and the process is complicated

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