Rubber support formulation for automobile

Abstract

The invention discloses a rubber support formulation for an automobile, which is characterized by comprising the following compositions by mass portion: 100 portions of No.3 smoke sheet rubber, 3 to 8portions of zinc oxide, 0.5 to 3 portions of stearic acid, 0.5 to 3 portions of antiaging agent RD, 0.5 to 2.5 portions of antiaging agent 4010NA, 0.5 to 3 portions of antiaging agent 4020, 0.5 to 2portions of paraffin, 3 to 8 portions of A-90, 10 to 40 portions of carbon black N220, 10 to 40 portions of carbon black N774, 0.5 to 1.5 portions of sulfur, 0.5 to 1.5 portions of vulcanizing agent DTDM, and 1 to 2 portions of accelerating agent CZ. By adopting the formulation, the aging resistant performance and the fatigue property of a rubber material are obviously improved, and reach and exceed the performance requirement of products. The implementation of the formulation ensures that the products have good aging resistant performance, and the fatigue life reaches and exceeds the technical requirement of clients.

Description

technical field [0001] The invention belongs to the technical field of rubber, and in particular relates to a rubber preparation raw material for a rubber bearing for automobiles. Background technique [0002] Rubber bearings for automobiles are used to connect leaf springs and automobile axles, and their function is to prevent or weaken the transmission of vibration generated during driving to the car body, thereby improving the ride comfort of the car. Its working principle is to use the damping effect of the rubber material to absorb or alleviate vibration, and convert the vibration kinetic energy into potential energy and heat energy. Because rubber is a poor conductor of heat, and because the rubber bearing is stressed, the volume is correspondingly large. , so the heat inside the rubber bearing cannot be dissipated in time, resulting in rubber aging. Natural rubber is the preferred material for vibration damping products. Due to its good elasticity and physical and me...

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Problems solved by technology

Its working principle is to use the damping effect of the rubber material to absorb or alleviate vibration, and convert the vibration kinetic energy into potential energy and heat energy. Because rubber is a poor conductor of heat, and because the rubber bearing is stressed, the volume is correspondingly large. , so the heat inside the rubber bearing cannot be dissipated in time, resulting in rubber aging

Natural rubber is the preferred material for vibration damping products. Due to its good elasticity and physical and mechanical properties, it cannot be replaced by other materials. However, its molecular main chain contains double bonds, which are very easy to break under the action of heat, aging, and affect the product. Use performance, the aging resistance of natural rubber is poor. At present, in the market, we see that most of the failure parts of rubber bearings are early cracks in rubber, that is to say, the rubber compound of ordinary natural rubber preparation raw materials is easy to age. , thereby greatly shortening the service life of the rubber bearing

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