Ethylene-Propylene-Diene Monomer composition for automobile part rubber support ring

Abstract

The invention relates to an Ethylene-Propylene-Diene Monomer (EPDM) composition for an automobile part rubber support ring, comprising EPDM rubber, activated zinc oxide, stearic acid, polyethylene glycol, antioxidant RD, antioxidant NBC, carbon black N550, light calcium, naphthenic oil, coupling agent Si-69, promoter CZ, promoter BZ, promoter TMTD, promoter DM and sulphur. According to the invention, the EPDM composition used for the automobile part rubber support ring has high original tensile strength, high tensile stress at 100%, excellent performance after resisting heat-aging, little difference after resisting heat, and low compression set, can raise the heat resistance and deformation resistance of the support ring, simultaneously has excellent cold resistance and low temperature brittleness, can be used in low temperature environments of various regions in winter, has wider temperature application range than plastic support ring, and has good wear resistance and good bending and cracking resistance.

Description

technical field [0001] The invention relates to a rubber supporting ring composition, in particular to an EPDM composition used for rubber supporting rings of auto parts. Background technique [0002] With the continuous acceleration of the development of the automobile industry, the performance requirements for the functionalization of automobile parts and noise reduction are increasing. Most automobile designers consider flexible pipe fittings such as automobile rubber hoses in the engine compartment. The support ring is added in the design to fix the rubber hose, thereby reducing the vibration and noise of the car to reduce the overall noise index of the car, and it is also conducive to the fixing of the pipeline and the assembly. Since the support frame is located in the engine compartment and is connected to the pipeline at the same time, the temperature requirement is relatively high, and at the same time, due to the force of the pipeline itself and the movement of the...

AI Technical Summary

Problems solved by technology

At present, most of the support rings are made of polyethylene (PE), polyvinyl chloride (PVC) and other plastic materials. Due to the poor low temperature resistance and low brittleness of plastic support rings, they are easy to break in winter and have low material strength under high temperature conditions. Poor vibration and noise reduction performance

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