Self-lubricating rubber bushing and preparation method thereof

Abstract

The invention relates to a self-lubricating rubber bushing and a preparation method thereof and particularly relates to a self-lubricating rubber bushing for an automobile and a preparation method of the self-lubricating rubber bushing. The self-lubricating rubber bushing comprises natural rubber SIR20, butadiene rubber BUNACB22, zinc oxide, stearic acid SA, an anti-aging agent RD, carbon black N550, naphthenic oil Nytex820, oleamide KEMAMIDEU, ultra-high molecular weight polyethylene XM220, paraffin Antilux654, an accelerant CBS and sulphur S200-1. The rubber bushing disclosed by the invention has high radial rigidity and approximately-zero torsional rigidity so as to be suitable for a special service condition with large torsional angle for a long term; and if being used for a long term, the bushing is low in abrasion and long in service life and can still be favorably used under a low-temperature condition.

Description

technical field [0001] The invention relates to a self-lubricating rubber bush and a preparation method thereof, in particular to a self-lubricating rubber bush for automobiles and a preparation method thereof. Background technique [0002] In the suspension guide mechanism of modern automobiles, such as swing arms, rear axles, etc., more and more hinge points connected to the body are connected by rubber bushings. With its good vibration isolation performance, elastic characteristics and attenuation characteristics, rubber bushings have become an indispensable and important component in automobiles. The characteristics of the bushing after vulcanization of the existing conventional rubber material: 1) The shape of the rubber part has more freedom to choose, and can provide stiffness in three directions (axial, radial, torsional); 2) It can be vulcanized firmly with the metal Together, the structure of fixing and supporting is simplified. Therefore, any direction in the th...

AI Technical Summary

Problems solved by technology

[0003] However, the existing vulcanized bushes of conventional rubber materials have the following disadvantages: 1) when the rubber is at low temperature, the dynamic elastic coefficient will rise sharply, so the low temperature resistance of the rubber material is low; 2) the existing bushes are not used To the self-lubricating rubber, that is, the existing rubber material cannot give the inner and outer double-tube type bushes high radial stiffness and zero torsional stiffness