High-heat-resisting ethylene acrylate rubber composition for hose of passenger car turbocharging system

Abstract

The invention relates to a high-heat-resisting ethylene acrylate (AEM) rubber composition for a hose of a passenger car turbocharging system. The AEM rubber composition for the hose of the passenger car turbocharging system depends on the specification of the rubber and the cooperative use with reinforced carbon black N550, polyether/polyester mixed plasticizer TP-759 with low volatility and a vulcanizing agent DIAK1#, the carbon black N550 is quickly extruded, so that a reinforcement effect is realized while easiness in extrusion and convenience in production can be realized, the production process is well guaranteed through the plasticizer TP-759, the compression permanent deformation can be guaranteed within a given range through the vulcanizing agent DIAK1#, through the DOE (department of energy) formula design and by summarizing a great amount of test data, the heat resistance, oil resistance and compression permanent deformation of Ultra HT are far better than those of Vamac IP. The AEM rubber composition is excellent in engine oil resistance and thermal aging resistance and more suitable for the environment of the turbocharging system containing high-temperature engine oil vapor.

Description

technical field [0001] The invention relates to the technical field of rubber hoses for automobile turbocharger systems, in particular to turbocharged engines with large displacement or harsh operating environments, so as to improve the heat resistance of rubber connecting hoses and finally prolong the service life. Background technique [0002] A turbocharger is actually an air compressor that compresses air to increase intake air. It uses the inertial momentum of the exhaust gas discharged from the engine to drive the turbine in the turbine chamber, and the turbine drives the coaxial impeller, which presses the air sent by the air filter pipe to pressurize it into the cylinder. When the engine speed increases, the exhaust gas discharge speed and the turbine speed also increase synchronously, and the impeller compresses more air into the cylinder, and the pressure and density of the air increase to burn more fuel. Increase the fuel volume and adjust the engine speed accordi...

AI Technical Summary

Problems solved by technology

[0004] At present, the material of turbocharged rubber hose is mostly selected from AEM (ethylene acrylate rubber) or ACM (acrylate rubber) of DuPont Company in the United States, and its long-term use temperature can only reach 160 ° C, and VMQ (silicone rubber) is heat-resistant Superior performance up to 180 ℃, but its oil resistance is very poor, high heat-resistant ACM (acrylate rubber) heat and oil resistance is greatly improved compared with traditional ACM (acrylate rubber), but the processing technology is not as good as traditional ACM (acrylate rubber) ), processability is difficult to control, FKM (fluorine rubber) has the best heat and oil resistance, but because it is the most expensive and is mainly used in fuel systems, it cannot be used to the fullest in turbocharged systems

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