Friction material for brake pad, brake pad and preparation method of brake pad

Abstract

The invention relates to the technical field of brake pads, in particular to a friction material for a brake pad, the brake pad and a manufacturing method of the brake pad. The friction material for the brake pad is composed of the following raw materials of naphthol modified phenolic resin, a titanate coupling agent, aramid fiber, carbon-core boron fiber, calcium titanate fiber, polyacrylonitrile fiber, beryllium oxide crystal whisker, silicon nitride crystal whisker, graphite whisker, silicide crystal whisker, titanium dioxide crystal whisker, boron nitride powder, blanc fixe, tremolite powder, aragonite powder and gagate powder. The brake pad is made of the friction material for the brake pad and a back plate. The manufacturing method of the brake pad comprises the following steps that pressing, heat treatment and size machining are conducted on the friction material for the brake pad and the back plate, and then the finished brake pad product is obtained. The brake pad has the advantages of being high in heat stability, safe in use, free of toxicity and excellent in frictional performance. The manufacturing method of the brake pad is simple in technology.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a friction material for brake pads, a brake pad and a preparation method for the brake pad. Background technique [0002] At present, with people's pursuit of modern quality of life, cars have become an indispensable daily necessities in family life. In the fierce market competition system, the safety and reliability of car brakes have become an important consideration for the public when choosing cars. The most important part of car braking is the braking ability of the brake pads. [0003] In fact, in the existing brake pads, ordinary phenolic resins have the disadvantage of poor thermal ablation. When braking, the brake pads become hot due to friction, which easily causes physical and chemical changes in the phenolic resin, so that the brake pads are exposed to heat at high temperatures. The braking performance of the state changes, and the thermal stability becomes poor; ...

AI Technical Summary

Problems solved by technology

[0003] In fact, in the existing brake pads, ordinary phenolic resins have the disadvantage of poor thermal ablation. When braking, the brake pads become hot due to friction, which easily causes physical and chemical changes in the phenolic resin, so that the brake pads are exposed to heat at high temperatures. The braking performance of the state changes, and the thermal stability becomes poor; moreover, in some low-steel formula friction materials, copper fibers are often added, and the brake pads made of friction materials containing copper fibers, the brake pads will Copper-containing dust is likely to be produced during the process of the process, and these copper-containing dust will enter the environment through air, rain, suspended particles, etc., causing environmental pollution and causing safety hazards; in addition, in brake pads made of asbestos, asbestos brake pads When the brake temperature reaches above 1000 degrees, toxic gas will be released, and asbestos brake pads have potential safety problems during long-term use because asbestos itself has carcinogenic effects; In the process of using, not only the brake pads are prone to be damaged, the brake pads and brake discs (drums) are rusted and stuck, and the friction performance of the brake pads is unstable, resulting in the problem that the friction performance is not good enough, but also prone to high temperature resistance. Deterioration and sensitivity to temperature changes, resulting in insufficient thermal stability

Images