Multielement silane coupling agent-modified phenolic resin base combined disc brake pad and preparation method thereof

Abstract

The invention provides a multielement silane coupling agent-modified phenolic resin base combined disc brake pad and a preparation method thereof, and relates to the technical field of automobile parts.The brake pad is prepared from, by mass, 4-7% of organosilicone-modified phenolic resin, 2-4% of polyacrylonitrile carbon fibers, 2-4% of aramid pulp, 10-34% of potassium titanate lamellae, 5-18% of steel fibers, 2-6% of glass fibers, 3-10% of natural flake graphite, 3-10% of granulated coke, 0.5-1.5% of silicon dioxide, 25-40% of barite and 2.5-10% of a multielement silane coupling agent.The disc brake pad has the advantages of being good in interfacial compatibility, stable in friction coefficient and product quality, excellent in wear resistance and anti-noise performance and the like; besides, a material modification process and a mixing process are integrated in the preparation method of the disc brake pad, so that production efficiency is high, modification cost is lowered, and the process is simple.

Description

technical field

[0001] The invention relates to the technical field of auto parts, in particular to a multi-component silane coupling agent modified phenolic resin-based composite disc brake pad and a preparation method thereof. Background technique

[0002] In disc brake pads, most of the reinforcing materials and fillers used in friction materials are inorganic minerals. Because these inorganic materials have less hydroxyl structure on the surface, they have different interface properties with the matrix, that is, organic polymers, and have poor compatibility. Therefore, if necessary, it is necessary to modify the surface of the filler with a silane coupling agent to enhance its compatibility with the phenolic resin matrix, dispersibility, mechanical strength and comprehensive performance. Traditional friction materials use a single silane coupling agent as a surface modifier to modify reinforcing fibers, mineral fillers, and friction performance modifiers in a certain pro...