Ethylene-propylene-diene rubber composition with high comprehensive performance and preparation method thereof

Abstract

The invention provides an ethylene-propylene-diene rubber composition with high comprehensive performance and a preparation method thereof. The ethylene-propylene-diene rubber composition is characterized by being prepared from 75 to 90 mass parts of ethylene-propylene-diene rubber, 10 to 25 mass parts of chlorosulfonated polyethylene rubber, 1.5 to 3 mass parts of anti-aging agent prepared by product of reaction of a ketone and amine, 1 to 3 mass parts of paraphenylenediamine anti-aging agent, 1.5 to 2.5 mass parts of physical anti-aging agent, 0.5 to 1.0 mass parts of stearic acid, 5 to 8 mass parts of active agent, 30 to 50 mass parts of reinforcing agent, 3 to 8 mass parts of plasticizer, 1.5 to 3 mass parts of vulcanizer and 2 to 4 mass parts of accelerator. The invention also provides the preparation method of the rubber composition, which is to blend in an internal mixer or an open mill. The product has high temperature resistance and high comprehensive performance.

Description

A kind of EPDM composition with excellent comprehensive performance and preparation method thereof technical field The invention relates to an EPDM rubber composition with high temperature resistance of 175°C-180°C, low compression deformation, good oil resistance, excellent ozone aging resistance, weather resistance, acid and alkali resistance and its preparation method, which is used for making low-cost comprehensive performance requirements The invention relates to rubber products used under high temperature conditions, and belongs to the technical field of rubber. Background technique Ethylene-propylene rubber has excellent weather resistance, ozone resistance, heat resistance, acid and alkali resistance, water vapor resistance, color stability, electrical properties, oil filling and room temperature fluidity. Ethylene-propylene rubber products can be used for a long time at 120°C, and can be used temporarily or intermittently at 150-180°C. Chlorosulfonated polyethyle...

AI Technical Summary

Problems solved by technology

The present invention adopts the combination of EPDM rubber and CSM rubber to improve the comprehensive properties of the rubber. After testing, the combined rubber is aged in hot air at 180°C for 7 days: the hardness change value is +5, and the tensile strength change rate is +8 %, the change value of elongation at break is: -40%. At the same time, it effectively improves the shortcomings of EPDM's poor oil resistance, and ensures excellent ozone resistance, acid and alkali resistance. It is an excellent resistance to complex environmental conditions. High temperature rubber material