Biodegradable fiber reinforced superhydrophobic friction material and preparation method thereof

Abstract

Provided are a biodegradable fiber-reinforced super-hydrophobic friction material and a preparation method thereof. The material is prepared from, by weight, 21-27% of biodegradable corn straw fiber and Lapinus fiber, 8-15% of super-hydrophobic pine shell and cotton straw mixed powder, 8-11.5% of polyvinyl alcohol modified phenolic resin, 5-8.5% of crystalline potassium titanate, 0-12% of crystalline flake graphite, 6-30% of wollastonite, 1-8% of brown fused alumina, 8-20% of silicon carbide, 10-28% of foam iron powder and 3-10% of vermiculite powder. The problem that single fiber strength is weaker can be effectively solved through collaborative design of biodegradable corn straw fiber and Lapinus fiber, braking noise is reduced, and the scratching of the friction material to a pair is decreased. The overall performance of the friction material is improved, friction factors are stabilized, and the abrasion quantity is decreased, so that the friction material has reasonable service life, compression amount and good heat-conducting performance, has very good weather resistance, the influence of rainwater, ice and snow on the friction material can be very well prevented, and the reliability of the friction material is improved.

Description

technical field [0001] The invention belongs to the technical field of brake friction materials, and in particular relates to a biodegradable fiber-reinforced superhydrophobic friction material and a preparation method thereof. Background technique [0002] Brake friction material is a key component to ensure the stability and reliability of vehicle equipment such as automobiles, trains, construction machinery, ships, oil drilling rigs and tank armored vehicles. Therefore, people have put forward strict requirements on the performance of friction materials, especially For equipment and vehicles that operate in harsh environments all the year round, for example, the friction material must have a stable friction coefficient and excellent wear performance under various working conditions, less wear on the pair, less vibration during use, and reasonable On the other hand, the brake friction material must have good weather resistance, which can well reduce the impact of moisture ...

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem of poor weather resistance of friction materials in rainy weather, ice and snow weather, or wading of vehicles, and the failure of components such as biological fibers and foamed iron powder due to these factors, and the strength of single fibers is relatively weak. The dynamic noise is large, the abrasion of the friction material on the pair is serious, the bonding strength between the fiber and the matrix is ​​weak, the physical and mechanical properties of the friction material are poor, the strength of the fiber after treatment is weakened, and the braking vibration is raised. A preparation method of high-strength corn stalk, superhydrophobic pine nut shell and cotton straw mixed powder, and application of degradable corn straw fiber and lepenas fiber mixed with superhydrophobic pine nut shell and cotton straw mixed powder in friction materials