Friction material and preparation method thereof

The invention relates to a friction material and a preparation method thereof. The invention aims to provide a friction material and a preparation method thereof. A large amount of waste generated in the industry is effectively utilized, the aims of protecting the environment and protecting the body health of people are achieved, the product quality is ensured, and the production efficiency and the automation rate are improved. According to the technical scheme, the friction material comprises the following components in parts by weight: 1) 5-25 parts of reinforced fibers, 10-40 parts of an adhesive, 0.5-8 part of a curing aid, 15-30 parts of a surface-modified friction performance regulator and 20-60 parts of surface-modified recycled waste. The surface-modified recycled waste is obtained by modifying the surfaces of recycled waste particles by adopting a powder coupling agent; and the weight ratio of the powder coupling agent is 0.5-2% of that of the recycled waste particles. The preparation method of the s