Study On The Sepiolite Fiber-reinforced Friction Materials

With China's entry into WTO, the basis behind the friction materials industry is facing severe challenges, because of asbestos in the early 1970s by the international community recognized as a carcinogenic substances, asbestos friction material with poor thermal conductivity, vulnerable to heat recession, higher Temperature asbestos fibres will lose crystal water to make asbestos fibres fragile, loss of enhanced role, it is necessary to intensify research and development of high performance non-asbestos friction material. Semi-metallic friction materials because of their good properties, and has become a major promote the use of non-asbestos friction material one.Based on the inspection and analysis of domestic and foreign literature and a large number of tests we choose sepiolite fiber, steel fiber as a reinforcement, wollastonite powder, graphite, talc, barium sulfate, silica, limestone, Rubber powder do friction performance regulator prepared to fill high-performance and non-asbestos friction material. In this paper, orthogonal test the method of sepiolite fiber and steel fiber between the mixed effects of each component and the interaction between the laws of the research base, the friction of the fibers and fill the friction and wear properties of the extent of All ingredients and formulations in the percentage of the best quality; identify suitable for heavy vehicles braking performance of the high temperature, high-performance ratio of friction materials.Through the results of the analysis and optimization of research that truck brake friction materials for the best formula, when the increase in the total fibre about 30 percent, and sepiolite fiber and steel fiber quality than in the vicinity of 4:3 , According to the proportion of such friction sample of the best resin in the amount of between 15% -25%, the recession of the phenomenon was not obvious, wear small, showed that the amount of resin matrix of 15% -25% Between more appropriate. Developed by the friction material to fully meet the heavy vehicle braking performance requirements, have sufficient mechanical properties of the friction and wear and superior performance, small thermal recession, good recovery performance, and resistant to wear and low noise.