Composite double-layered brake pad and preparation method thereof

Abstract

The invention provides a composite double-layered brake pad and a preparation method thereof. The brake pad comprises steel backs and a brake pad body, and the brake pad body consists of a bonding heat-insulation layer and a friction layer. The preparation method comprises the following steps: uniformly dispersing materials of the friction layer and the bonding heat-insulation layer through a high-speed disperser respectively; then sequentially feeding the raw materials into a forming die; compounding the steel backs and then placing the steel backs into a vulcanizing press to be pressed; andremoving burrs to obtain the composite double-layered brake pad. The brake pad has the characteristics of environmental friendliness, good high-temperature heat fading resistance, good noise reductionperformance, stable friction coefficient, long service life and the like. The bonding heat-insulation layer plays a role in fixing the friction layer, improving the strength of the friction layer andisolating heat; a plurality of new fiber materials in the friction layer not only can mutually make up for the defects of respective properties, but also can cooperate to form high properties such asrapid heat dissipation, stable friction coefficient, reduction of deformation of the brake pad and the like; and by the brake pad, the excellent friction layer and an excellent transfer film are formed, and thus, an automobile brakes sensitively and is stable in braking.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a composite double-layer brake pad and a preparation method thereof. Background technique [0002] In the braking system of a car, the brake pad is the most critical safety part. With the rapid development of modern technology, like other components of the braking system, the brake pads themselves have been constantly developing and changing in recent years. At present, many new high-performance brake pads have appeared on the market, but while improving the braking performance, they have a huge impact on the living environment, and the brake noise and the emission of harmful gases cannot be effectively controlled. The friction materials used in the automobile brake pads we use now contain many heavy metal substances, including antimony, chromium, cadmium, copper, barium, copper and other heavy metals. Every time a car brakes, a small amount of heavy metal dust is released a...

AI Technical Summary

Problems solved by technology

[0003] In addition, the existing brake pads still have technical problems such as poor thermal conductivity, brittle edges and corners, thermal decay, and high wear resistance.

[0004] Chinese Patent Publication No. CN103409107A, dated November 27, 2013, discloses a brake pad friction material and its preparation process, including cardolite resin, Twaron fiber, glass fiber, mineral fiber, graphite, Molybdenum, sepiolite, barium sulfate, friction powder, tire powder, friction enhancer, potassium feldspar, flame retardant and zircon sand; although some components with high wear resistance and high temperature resistance are added, but for medium and heavy Trucks, during the braking process, will generate higher temperatures than ordinary passenger cars, and at the same time need more wear-resistant materials, so that medium and heavy vehicles will not have brake failure accidents during braking, and the high temperature resistance performance is poor , or in other words, the braking performance drops seriously under high temperature conditions, and it is difficult to cope with the braking needs of medium and heavy vehicles under conditions such as multiple slopes and bends.