Copper-free friction material composition for brake pads

摘要

A copper-flee friction material composition for brake pads consists of: 0.43 parts of aramid fiber, 1.9 parts of tire powder, 6 parts of heavy magnesia, 2.55 parts of calcined petroleum coke, 8 parts of ceramic fiber, 6.5 parts of phenolic resin, 14 parts of aluminum silicate fiber, 22 parts of potassium hexatitanate crystal whisker, 25 parts of barite powder, 5 parts of granular graphite, 2 parts of antimony sulfide, 2.8 parts of friction powder of cashew nut oil, 0.9 part of boron nitride, 5 parts of flake aluminum powder, and 0.6 parts of tantalum carbide. Trials show that it has satisfactory high temperature and thermal decay resistant performance, long service life, good abrasion resistance and stable friction coefficient. With the friction material of the present invention used, the brake pad of vehicles is sensitive and stable during braking, produces no screech, is comfortable and has no damage on coupling plate.

主权项

1. A copper-free friction material composition for a brake pad, the copper-free friction material composition consisting of:
0.4-0.6 parts by weight of aramid fiber; 1.8-2.2 parts by weight of tire powder; 5.5-7 parts by weight of magnesia; 2.5-3 parts by weight of calcined petroleum coke; 7-10 parts by weight of ceramic fiber; 5-7 parts by weight of phenolic resin; 10-20 parts by weight of aluminum silicate fiber; 18-25 parts by weight of potassium hexatitanate crystal whisker; 20-30 parts by weight of barite; 4.5-6 parts by weight of granular graphite; 1.8-2.5 parts by weight of antimony sulfide; 2.5-3 parts by weight of friction powder of cashew nut oil; 0.8-1.2 parts by weight of boron nitride; 3-5 parts by weight of flake aluminum powder; and 0.4-0.6 parts by weight of tantalum carbide.