a brake pad

Abstract

The invention discloses a novel brake pad. The novel brake pad is obtained through the steps of weighing raw materials, namely, modified phenolic resin, fiber type raw material, filling type material and novel nitrile rubber powder, wherein the novel nitrile rubber powder is composed of a nitrile rubber powder body, sulphur, accelerants DM and carbon black, the fiber type raw material is composed of one or more of mineral fiber, glass fiber, steel fiber and wood fiber, and the filling type material is composed of one or more of graphite, barite, frictional powder and bauxite; uniformly mixing the modified phenolic resin and the filling type material, adding the novel nitrile rubber powder and the fiber type raw material to be uniformly mixed into a mixture, sending the obtained mixture and a brake pad back plate coated with rubber into the pressing process, conducting cold pressing to form a finished blank, controlling the pressure intensity to be within the range of 21MPa to 26MPa, conducting hot pressing and forming, controlling the temperature to be within the range of 143 DEG C to 151 DEG C, and obtaining the novel brake pad. The novel brake pad is high in high temperature resistance, excellent in abrasion resistance and high in anti-impact strength, and the blank manufactured through cold pressing and preforming has high strength and can be conveniently transported.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a brake pad. Background technique [0002] Brake pads are also called brake pads or brake pads. In the braking system of a car, brake pads are the most critical safety parts and play a decisive role in the braking effect. Brake pads are generally made of steel plates, adhesive insulation layers and friction block composition. The friction block is composed of friction material and adhesive. When braking, the friction block is squeezed on the brake disc or brake drum to generate friction with it, so as to achieve the purpose of decelerating and braking the vehicle. It can be seen that the friction block determines the braking performance of the brake pad at high speed and high temperature. The friction material is an important part of the brake pad in the manufacturing process and use process. [0003] The working principle of the brake is mainly from friction. Using the fric...

AI Technical Summary

Problems solved by technology

[0004] The friction material of the current brake pad generally needs two processes of cold press preforming and hot press forming. The friction material often uses asbestos fiber as a reinforcing material. Asbestos fiber has good tensile strength, good heat insulation and corrosion resistance. , not easy to burn, its strong tensile strength can even match with high-grade steel, but asbestos fibers are very small, almost invisible to the naked eye, when these tiny fibers are inhaled into the human body, they will attach and deposit in the lungs , cause lung disease, and cause lung cancer in serious cases, and the thermal conductivity of asbestos fibers is particularly poor. If the brake pads reach a certain temperature, it will cause brake failure and cause accidents. Therefore, a ban on asbestos has been launched worldwide The environmental storm of brake pads, because the substitute material of asbestos does not have good dispersant adsorption, it is easy to cause the cold-pressed preformed blank to fall apart after being released from the mold, and cannot be transported. Brake pads with high impact strength and cold-pressed preformed blanks have good strength for easy transportation, simple preparation methods, and low cost have become technical problems that need to be solved at present.