Natural rubber-butadiene styrene rubber composition material and preparation method and application thereof

Abstract

The invention discloses a natural rubber-butadiene styrene rubber composition material and a preparation method and application thereof. The natural rubber-butadiene styrene rubber composition material comprises, by weight, 86-94 parts of natural rubber, 6-14 parts of butadiene styrene rubber, 4-10 parts of activator A, 0.5-2 parts of activator B, 3-6 parts of antiager, 2-4.7 parts of protection wax, 1-3 parts of tackifier, 1-2 parts of polyethylene glycol, 1.8-2.5 parts of silane coupling agent, 1-3 parts of amide lubricant, 30-45 parts of carbon black, 8-15 parts of white carbon black, 1.8-2.5 parts of vulcanizing agent, 0.1-0.4 part of promoter A and 1.2-2.5 parts of promoter B. A torsion beam bush obtained by using the material is excellent in resistance to impact fatigue and tear fatigue, gentle in fatigue heat generation and easy in heat radiation and is high in fatigue endurance and long in service life in extreme working conditions. The preparation method is simple in step, convenient to operate and suitable for industrial production.

Description

technical field [0001] The invention specifically relates to a natural rubber-styrene butadiene rubber composite material, its preparation method and application. Background technique [0002] The torsion beam rear suspension is simple in structure, small in mass, easy to install and disassemble, and takes up little space. It is widely used in small and medium-sized vehicles with front-wheel drive. The rear axle torsion beam bushing (hereinafter referred to as "torsion beam bushing") is connected to the vehicle body to attenuate the vibration transmission generated by the wheel torsional force and lateral force excitation. The torsion beam bushing is generally made of the inner pipe skeleton, the outer pipe skeleton and the damping rubber between the inner and outer skeletons by thermally vulcanizing and bonding with a special adhesive. Acceleration, deceleration, turning, bumping and other working conditions during the driving process of the car will exert great impact for...

AI Technical Summary

Problems solved by technology

[0006] The actual technical problem to be solved by the present invention is to overcome the poor impact fatigue and tear fatigue resistance of the rubber composition material used for the torsion beam bushing in the torsion beam rear suspension in the prior art, and the rubber composition under heavy load. Intense heat generation in the interior leads to the failure of rubber molecular chain breakage and short fatigue durability under extreme working conditions. A natural rubber-styrene-butadiene rubber composite material, its preparation method and application are provided.

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