Copper-less and asbestos-free organic friction materials and products

Abstract

The invention relates to a copper-less and asbestos-free organic friction material, which is composed of the following components in parts by weight: 10-15 parts of bonding material, 45-55 parts of filling material, 20-30 parts of fiber material, and 2-30 parts of acid-base adjustment material. 4 parts, 5-15 parts of metal fiber or metal powder, wherein the fiber material contains nano-boron fiber or basalt fiber, and the metal fiber or metal powder is one or more of titanium, aluminum, heat-resistant duralumin, copper and brass A combination, and the copper content is less than 5%. The present invention reduces the amount of red copper and brass in the friction material formula and strictly selects the added metal components as titanium, aluminum and heat-resistant duralumin. The stable friction coefficient of the material makes the braking process soft, smooth and comfortable. It can also overcome the instability of the friction coefficient of commercially available high-copper organic friction materials under high-speed and low-temperature conditions, and effectively reduce the aggressiveness of the friction couple.

Description

technical field [0001] The invention relates to the technical field of friction materials, in particular to an organic friction material with less copper and no asbestos and its products. Background technique [0002] Friction material is a component material used in power machinery that relies on friction to perform braking and transmission functions. It includes organic friction materials, powder metallurgy friction materials, and paper-based friction materials by type. Among them, organic friction materials are mainly composed of three categories, including binders, fillers and fiber reinforced materials. [0003] The main components of copper-containing organic friction materials on the market are generally phenolic resin, fiber materials, filler materials and metal materials mainly composed of brass and red copper. The content of brass and red copper is relatively high. They have good thermal conductivity and high temperature friction stability. , heat decay, and wear ...

AI Technical Summary

Problems solved by technology

[0003] The main components of copper-containing organic friction materials on the market are generally phenolic resin, fiber materials, filler materials and metal materials mainly composed of brass and red copper. The content of brass and red copper is relatively high. They have good thermal conductivity and high temperature friction stability. , heat decay, and wear resistance, but subject to laws and regulations in Europe and the United States, the use of copper is prohibited, and the development of formulas with a copper content of less than 5% has become an urgent issue for friction material manufacturers

At the same time, the friction coefficient of this type of organic friction material will be relatively reduced under high-speed and low-temperature conditions, and the instability of the friction coefficient will easily lead to driving accidents.

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