Novel rare earth compound type brake pad and preparation method thereof

Abstract

The invention discloses a novel rare earth compound type brake pad. The novel rare earth compound type brake pad comprises, by weight, 14-18% of modified phenolic resin, 25-30% of fiber materials, 25-35% of filling materials and 25-35% of rear earth materials, wherein the rear earth materials are composed of one or more kinds of lanthanum oxide, cerium oxide and praseodymium oxide, and the fiber materials are composed of one or more kinds of mineral fibers, glass fibers and paper fibers. The invention further discloses a preparation method of the novel rare earth compound type brake pad. The novel rare earth compound type brake pad is good in high-temperature resistance, excellent in abrasion resistance and large in impact resistance, and the preparation method is simple and low in cost.

Description

technical field [0001] The invention relates to the technical field of brake pads, in particular to a novel rare earth composite brake pad and a preparation method thereof. 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 pr...

AI Technical Summary

Problems solved by technology

[0004] Asbestos fiber is often used as a reinforcing material in current brake pads. Asbestos fiber has good tensile strength, good heat insulation and corrosion resistance, and is 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, causing lung diseases, and in severe cases, lung cancer, and the thermal conductivity of asbestos fibers is particularly poor. If the brake pads reach a certain temperature, it will lead to brake failure and bury the hidden danger of accidents. Therefore, an environmental storm of banning asbestos brake pads has been set off worldwide. However, the current alternative fibers cannot fully achieve the performance of asbestos. Most of the alternative fibers are mineral fibers, which have smooth surface and poor interfacial properties, and are difficult to fuse with other materials, resulting in low impact strength and poor wear resistance. Therefore, how to prepare a fiber with good high temperature resistance and good wear resistance, A new type of brake pad with high impact resistance, simple preparation method and low cost has become a technical problem that needs to be solved at present