High-adhesion alumina sol automobile clutch friction material and preparation method thereof

Abstract

The invention discloses a high-adhesion alumina sol automobile clutch friction material which comprises, by weight parts, 2-3 parts of sodium alkyl benzene sulfonate, 0.4-0.8 part of 1H-Benzotriazole, 3-4 parts of hexagonal boron nitride, 4-6 parts of alumina sol, 1-2 parts of ethylparaben, 3-7 parts of barium sulfate, 3-5 parts of vinyl trimethoxy silane, 50-60 parts of acetone, 20-30 parts of dimethyl sulfoxide, 25-30 parts of absolute ethyl alcohol, 50-60 parts of methyl methacrylate, 20-26 parts of butyl acrylate, 0.3-1 part of dodecylthiol, 20-34 parts of titanic sulfate, 16-20 parts of glucose, 60-70 parts of nanometer carbon powder, 200-300 parts of isopropanol, 80-100 parts of nylon 66 and 0.04-0.06 part of azodiisobutyronitrile. The alumina sol is adopted to perform modified treatment of a nylon material, the compatibility between the nylon material and polymethyl methacrylate (PMMA) and nano particles can be effectively improved, and the stability of finished products is improved.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to a high-adhesion aluminum sol automobile clutch friction material and a preparation method thereof. Background technique [0002] In recent decades, the automobile industry has developed rapidly. The main directions of automobile research are light weight, energy saving, emission reduction and safety performance improvement. Functional parts made of plastic are more and more widely used in automobiles. , while the clutch transmits torque through the friction force of the pressure plate pressing the friction plate. If the friction coefficient is large, it is easy to cause excessive friction, and if the friction coefficient is small, it is not conducive to the transmission of torque; [0003] In recent years, in order to improve the friction and wear performance of brake pads, nano-friction materials have received extensive attention. By adding nanoparticles, the micro-in...

AI Technical Summary

Problems solved by technology

, while the clutch transmits torque through the friction force of the pressure plate pressing the friction plate. If the friction coefficient is large, it is easy to cause excessive friction, and if the friction coefficient is small, it is not conducive to the transmission of torque;

[0003] In recent years, in order to improve the friction and wear performance of brake pads, nano-friction materials have received extensive attention. By adding nanoparticles, the micro-interface structure of friction material components has been significantly improved, which can effectively improve its thermal decay and thermal recovery performance. , by controlling the nano-effects of different shapes and multi-components, the comprehensive performance of nano-friction materials can be improved, especially the high-temperature friction and wear properties can be improved while taking into account the strength and toughness. However, the direct introduction of traditional dry mixing Nano-powders cannot maximize the modification effect of nanoparticles on friction materials, but will have some negative effects. Experience shows that direct mixing of nanoparticles will cause the nanoparticles to adhere to other particles during the mixing process. And on the surface of steel fiber, the bonding strength between the resin material and other materials is reduced, resulting in a small friction coefficient of the friction material and a large increase in the wear rate during the friction process