Ethylene propylene rubber, raw material composition of ethylene propylene rubber, lifting lug and preparation method and application of lifting lug

Abstract

The invention discloses ethylene propylene rubber, a raw material composition thereof, a lifting lug, a preparation method of the ethylene propylene rubber and application. The raw material composition comprises 100 parts of ethylene propylene rubber raw rubber, 3-10 parts of an activator A, 0.5-2.5 parts of an activator B, 3-6 parts of an anti-aging agent, 1-2 parts of polyethylene glycol, 1-2 parts of a silane coupling agent, 40-60 parts of carbon black, 4-15 parts of precipitated white carbon black, 4-15 parts of a plasticizer, 2.5-4.5 parts of a vulcanizing agent, 1.5-3.2 parts of an assistant cross-linking agent A and 0.1-0.3 part of an assistant cross-linking agent B; the activator A comprises zinc oxide; the activating agent B is stearic acid; the flash point of the plasticizer is 270 DEG C or higher; the vulcanizing agent is a peroxide vulcanizing agent; the assistant cross-linking agent A is an assistant cross-linking agent for a peroxide vulcanization system; the assistant cross-linking agent B is sulfur. The ethylene propylene rubber disclosed by the invention is more excellent in high-temperature resistance, longer in service life and lower in damping coefficient.

Description

technical field [0001] The invention relates to an ethylene-propylene rubber, a raw material composition thereof, a lifting lug, a preparation method and an application thereof. Background technique [0002] The automobile engine exhaust system assembly includes exhaust manifold, exhaust pipe, muffler, three-way catalytic converter, etc. It is connected to the engine and fixed to the lower part of the car chassis through lifting lugs. The lifting lug bears the superimposed load caused by the dead weight of the exhaust system and various excitations during the movement of the vehicle and its engine. These stimuli come from engine piston movement, ground, wind resistance, steering lateral force, etc. The lifting lug needs to have a certain rigidity and strength so that it has a supporting function and has a long service life. The automobile engine exhaust system assembly is connected to the engine exhaust outlet, which is excited by high frequency and wide frequency amplitu...

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved by the present invention is to overcome the high cost of silicone rubber in the prior art as the material of the hot end lug, and the peroxide vulcanized system ethylene-propylene rubber in the prior art as the material of the hot end lug, which is high temperature resistant Insufficient, insufficient service life, slightly high damping coefficient, and poor NVH control during the acceleration phase of automobile high-speed driving, and provide a new type of ethylene-propylene rubber and its raw material composition, lifting lug and its preparation method, application

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