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采用竹纤维为增强相制备新型无石棉树脂基复合摩擦材料.通过热失重分析、定速摩擦试验及磨损表面形貌观察等手段探讨竹纤维的含量对材料在不同温度下摩擦学性能的影响.试验结果表明:在树脂基摩阻材料中加入适量竹纤维能改善材料摩擦磨损性能,并具有一定的减震降噪的效果,但在超过其热解温度时会造成竹纤维的碳化、挥发,对基体增强失效;竹纤维质量百分数为13%时试样能获得较稳定的摩擦系数及较低的磨损率;竹纤维含量过多会造成摩阻材料制备工艺性变差,且高温下大量竹纤维碳化剥落会破坏摩擦表面膜的连续性,使摩阻性能显著下降.
A new type of non-asbestos resin-based composite friction material was prepared by using bamboo fiber as reinforcing phase.The effect of bamboo fiber content on the tribological properties of the material at different temperatures was investigated by means of thermogravimetric analysis, constant speed friction test and wear surface morphology observation. The experimental results show that adding appropriate amount of bamboo fiber to the resin-based friction material can improve the friction and wear properties of the material, and has a certain effect of damping and noise reduction. However, when it exceeds the pyrolysis temperature, it will cause the carbonization and volatilization of the bamboo fiber, The matrix can not be strengthened effectively. When the mass fraction of bamboo fiber is 13%, the sample can get more stable friction coefficient and lower wear rate. If the content of bamboo fiber is too much, the manufacturing process of friction material becomes worse, Carbonized fiber spalling will destroy the continuity of the friction surface film, so that the frictional resistance decreased significantly.