Ethylene propylene rubber

Abstract

The invention relates to ethylene propylene rubber. The ethylene propylene rubber is prepared from the following components in parts by weight: 15-35 parts of ethylene-propylene methylene copolymer, 15-25 parts of ethylene-propylene-diene-terpolymer rubber, 1-6 parts of vulcanizing agent, 1-5 parts of anti-aging agent, 1-5 parts of white carbon black, 5-15 parts of acetylene black, 1-5 parts of attapulgite, 0.1-2 parts of stearic acid, 1-5 parts of cross-linking agent and 0.1-1 part of accelerator. The ethylene propylene rubber has the advantages that ethylene-propylene methylene copolymer and ethylene-propylene-diene-terpolymer rubber are used at the same time, and a vulcanization system is adjusted, so that the ethylene-propylene methylene copolymer and the ethylene-propylene- diene-terpolymer rubber are vulcanized at the same time, and the high temperature resistance requirement is met; the ethylene propylene rubber obtains low compression set, and a vulcanized product has good heat resistance, chemical stability and low compression deformation; white carbon black and phenolic resin are adopted, so that the processing fluidity of the ethylene propylene is improved.

Description

technical field [0001] The invention relates to an ethylene-propylene rubber. Background technique [0002] With the continuous development of the rubber industry, the use conditions of rubber products are becoming increasingly harsh, and higher requirements are put forward for heat resistance. Many rubber products such as rubber tubes and seals require long-term high temperature resistance of 150 °C. Ethylene propylene rubber has outstanding heat resistance, superheated steam resistance, ozone resistance, weather aging resistance and high insulation performance, especially good heat aging resistance, but the traditional vulcanization system ethylene propylene rubber generally has a temperature resistance of 125 ℃, When the temperature reaches 150°C, the compression deformation of the rubber product will increase accordingly, so that it cannot work normally, causing quality problems during long-term high-temperature use. Contents of the invention [0003] The technical pr...

AI Technical Summary

Problems solved by technology

Ethylene propylene rubber has outstanding heat resistance, superheated steam resistance, ozone resistance, weather aging resistance and high insulation properties, especially good heat aging resistance, but the traditional vulcanization system ethylene propylene rubber can generally withstand temperatures up to 125 ℃, When the temperature reaches 150°C, the compression deformation of the rubber product increases, so that it cannot work normally, causing quality problems during long-term high-temperature use