Study On Fiber Or Packing Coupling Agent Surface Modificationreinforce Resin Matrix Friction Materials

The progress of science and technology promote the car speed to increase, and motor speed can cause brake pads high temperature heat recession, so improving performance of the heat recession has become the main direction of the research of brake pads. Coupling agent surface modification of inorganic fibers or filler can effectively improve the friction and wear properties of polymer matrix friction materials,and lower the heat recession. In this paper, we test the coupling agent surface modified inorganic fibers or filler reinforced resin-based friction material friction and wear performance and impact strength, and we make a preliminary analysis of the microstructure of the friction material, with a view to develop high-performance、long-life friction material provide a theoretical basis and experimental data. The results showed that:1Coupling surface modified inorganic fibers orfillers resin-based friction material coefficient is0.25～0.5, the wear rate is less than0.8×10-7cm3/(N· m). They are in line with the national standard GB5763-2008"car brake linings" in the fourth category disc brake linings requirements.2KH-550has the best surface modification for silicon cotton, which can make the friction coefficient of the friction material in high temperature is increased by30%; CX-602has the best surface modification for steel fiber, which can make the friction coefficient of the friction material in high temperature is increased by27%; TCA-201has the best surface modification for petroleum coke, which can make the friction coefficient of the friction material in high temperature is increased by26%; TCA-311whas the best surface modification for SG, which can make the friction coefficient of the friction material in high temperature is increased by29%;3Debris are irregular in shape, resin-based friction material filled bycoupling agent surface-modified fibers or fillers wear debris particle size is less discrete,large particle debris has a smaller proportion. 4Impact strength of the inorganic fibers or fillers of the coupling agent surface-modified resin based friction material is significantly improved. The structure of their impact fracture is compact, and they have fewer defects. We can observe many jagged ductile fracture traces.Figure38, Table26, References65...