Production technology of friction material for brake pad of construction waste filling material

A process for producing a friction material for a construction waste filler, comprising steps of:

• (S1) sorting a building material, removing fiber impurities, calcining, removing white garbage and metal impurities, and obtaining a first intermediate product;
• (S2) sifting and removing dust from the first intermediate product, obtaining an intermediate filler, cooling and then soaking after performing calcination on the intermediate filler, dehydrating, drying and obtaining a material to be mixed;
• (S3) evenly mixing the material to be mixed, graphite, molybdenum disulfide and other media materials according to a weight ratio of 100:5:0.5:4.5, performing enhancement treatment, grinding and obtaining a building filler;
• and
• (S4) mixing 25 parts of composite fiber, 6 parts of phenolic resin, 40 parts of the building filler, 20 parts of friction material, 0.5 parts of pyrite, 0.5 parts of carbon black, 1 part of alumina, and 7 parts of brass powder with a particle size of 40 meshes by weight, stirring in a mixer for 20-40 min till all materials are fused, taking out a fused mixture, barreling, and obtaining the friction material for the construction waste filler.