▎ 摘　　要

NOVELTY - Wear-resistant drum brake pad comprises 13-15% high hardness organic binder, 25-35% slag wool, 5-10% nano-carbon-based modified composite fiber, 2-5% composite rubber powder, 8-12% abrasive material, 6-10% expanded graphite crushed material, 3-6% pyrite powder, 6-10% SMC chopped glass fiber, and 10-25% space filler. The nano-carbon-based modified composite fiber comprises 10-25% graphene modified polyimide fiber, 10-20% polyimide woven carbon fiber, 8-13% carbon fiber modified poly-p-phenylene benzobisoxazole fiber, 5-10% carbon nanotube modified polyphenylene pyridodiimidazole fiber, 20-35% carbon fiber and 20-25% carbon nanotube. The space fillers are barite powder and calcium sulfate. USE - The brake pad is useful for water tank filled with slag wool, urban muck trucks, mining machinery vehicles and short-distance heavy-duty vehicles e.g. water tanks. ADVANTAGE - The brake pad is safe and environmentally friendly, and has low manufacturing cost and stable friction coefficient from low temperature to high temperature, low thermal recession and other characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the wear-resistant drum brake pad.