Low-copper asbestos-free organic friction material and product

Abstract

The invention relates to a low-copper asbestos-free organic friction material. The low-copper asbestos-free organic friction material is prepared from the following components in parts by weight: 10-15 parts of a binding material, 45-55 parts of a filling material, 20-30 parts of a fiber material, 2-4 parts of an acidity-alkalinity adjusting material and 5-15 parts of metal fiber or metal powder, wherein the fiber material contains nano boron fiber or basalt fiber; the metal fiber or the metal powder is selected from one or combination of more of titanium, aluminum, heat-resistant hard aluminum, red copper and brass; and the content of copper is less than 5%. According to the formula of the friction material, consumption of red copper and brass is reduced; the strictly-selected and added metal components comprise titanium, aluminum and heat-resistant hard aluminum; the organic fiber contains nano boron fiber or basalt fiber, so that the impact toughness of the product is improved; the stable friction coefficient of the friction material is maintained; the braking process is gentle, stable and comfortable; the defect of unstable friction coefficient of the commercially available high-copper organic friction material under the high-speed and low-temperature condition can also be overcome; and the friction pair aggression can be effectively reduced.

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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