Patent ID: 8962711
Filing Date: 2015-02-24
Classification: F16D

Abstract:
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.