Compression and ageing resistant automobile sealing strip

Abstract

The invention discloses a compression and ageing resistant automobile sealing strip. The compression and ageing resistant automobile sealing strip comprises, by weight, 20-30 parts of ethylene propylene diene monomer, 25-28 parts of nitrile butadiene rubber, 3-5 parts of tert-butyl peroxybenzoate, 2-4 parts of semi-reinforcing carbon black N660, 2-4 parts of silica, 2-5 parts of pentaerythritol tetrastearate, 1-3 parts of paraffin oil, 2-3 parts of an antioxidant, 3-5 parts of a silane coupling agent KH550, 1.2-1.8 parts of a vulcanizing agent, 3-4 parts of stearic acid, 4-6 parts of zinc borate, 8-10 parts of a filler and 0.4-0.6 parts of a vulcanizing agent. The above formula has the advantages of reasonable ratio and low cost, and the above produced product has ageing resistance, so the long service life of the product is guaranteed; and silica and the filler are adopted as reinforcing agents, so the product has the advantages of high tensile strength, high compression deformation resistance, excellent heat resistance, reduction of pollution to environment, and suitableness for wide popularization.

Description

technical field [0001] The invention belongs to the technical field of automobile sealing strip formulations, in particular to an anti-compression and aging-resistant automobile sealing strip. Background technique [0002] Before the 1980s, due to the limitation of the level of science and technology at that time, almost all automobile sealing strips only considered the connection performance and partial sealing performance, and rarely considered the decoration, safety and comfort. Therefore, at that time, the sealing strips used by passenger cars only considered more in terms of connectivity, such as front and rear windshields, side windows, and door sealing strips; the structure was also very simple, and most of them used a single type of rubber, one end connected to the body, the other connected to the glass, etc. ;Materials are mainly natural rubber or styrene-butadiene rubber, plastics (mainly modified PVC). Although such a sealing strip satisfies the connection perfor...

AI Technical Summary

Problems solved by technology

However, the current engineering operation environment is becoming more and more specialized and diversified, and the traditional sealing strips can no longer meet the requirements of modern industries.