Acrylate and ethylene acrylate rubber composite structure hose and its processing technology

Abstract

The invention discloses an acrylate and ethylene acrylate rubber composite structure hose and a processing process thereof. The acrylate and ethylene acrylate rubber composite structure hose comprises an inner lining and an outer cover, wherein the inner lining is prepared from the following raw materials in parts by weight: 100 parts of acrylic rubber, 1-5 parts of an anti-aging agent, 2-4 parts of a flow promoter, 1-3 parts of a processing aid, 10-50 parts of carbon black N330, 10-60 parts of carbon black N550, 2-15 parts of a plasticizer, 0.4-1.2 parts of a vulcanizing agent and 0.8-5 parts of a vulcanizing accelerator; and the outer cover is prepared from the following raw materials in parts by weight: 100 parts of ethylene acrylate rubber, 1-3 parts of polyethylene glycol, 1-5 parts of an anti-aging agent, 0.5-3 parts of a scorch retarder, 1-4 parts of a flow promoter, 1-3.5 parts of a processing aid, 10-50 parts of carbon black N330, 5-70 parts of carbon black N550, 5-20 parts of a plasticizer, 0.5-1.6 parts of a vulcanizing agent and 0.5-4 parts of a vulcanizing accelerator. By the interaction of each component raw material and reasonably controlling the addition sequence and processing time of each component raw material, the low-temperature and high-temperature resistances and oil resistance of acrylate rubber are further improved.

Description

technical field [0001] The invention relates to the technical field of rubber hoses, in particular to a hose with a compound structure of acrylate and ethylene acrylate rubber and its processing technology. Background technique [0002] Environmental protection and energy are the two major issues we are facing. The calls and requirements for environmental protection and energy conservation are getting higher and higher, which defines the direction for the development of the automobile industry. Improving fuel efficiency and reducing exhaust emissions are top priorities. In recent years, turbocharging systems have been widely used, especially the use of crankcase exhaust gas participating in the circulation technology, which is one of the technologies to improve fuel efficiency and reduce exhaust emissions. This requires that the hoses of the automobile air intake system have high and low temperature resistance and oil resistance. At present, in regions that adopt Euro V emi...

AI Technical Summary

Problems solved by technology

At present, the structure of this kind of hose is mainly the inner layer of fluorine rubber and the outer layer of silicone rubber. Not only the material is expensive, the process is complicated, but also the efficiency is relatively low.

Now many turbocharger tubes start to use acrylate rubber or ethylene acrylate rubber. Although the problem of efficiency is solved, the material of acrylate rubber or ethylene acrylate rubber is relatively simple, only the inner or outer layer is made of a single Therefore, it is not satisfactory in terms of oil resistance and high and low temperature resistance, mainly reflected in the fact that acrylate rubber cannot meet the requirements of high and low temperature resistance at the same time, while ethylene acrylate rubber is excellent in high temperature and low temperature resistance, but Oil resistance is relatively poor