摩擦化学反应对环氧复合材料摩擦性能的影响  

The Effect of Tribochemistry Reaction on the Tribological Properties of Epoxy Composites

作　　者：郭清兵[1] 谭赟华 李翠金[1] 

机构地区：[1]仲恺农业工程学院化学化工学院,广东广州510225 [2]佛山市环境监测中心站,广东佛山528000

出　　处：《润滑与密封》2011年第8期79-83,共5页Lubrication Engineering

摘　　要：碳纤维和纳米粒子混杂填充环氧复合材料对其减摩耐磨性能的提高具有协同效用。为了研究其协同作用机制,用X射线光电子能谱仪(XPS)对材料摩擦前后磨损面进行分析;用与扫描电镜联用的X射线能谱仪(EDS)对摩擦后的对偶面进行分析;用纳米闪光导热仪对材料的导热系数进行分析;用热分析仪对材料磨损面热性能进行分析。结果表明,复合材料中碳纤维增加了基体的导热性,纳米粒子增强了基体的力学性能,减弱了分子链的氧化降解反应,混杂填料兼备两方面的因素且互相促进,在提高复合材料的减摩耐磨性中表现出协同效应。Carbon fibers and nanoparticles hybrid epoxy composites have synergistic effect on improving the friction reducing and wear resistance. In order to investigate the synergistic effect, X-ray photoelectron spectroscopy was used to analyze the worn surface of epoxy and its composites before and after friction. X-ray energy dispersive spectroscopy which coupled with scanning electron microscopy was used to analyze the counter-face after friction. Nano-flash thermal conductivity meter was used to measure the thermal conductivity of the composites. Thermal gravimetric analysis was used to characterize the thermal degradation behavior of composites. The results show that carbon fiber increases thermal conductivity of epoxy, and nanoparticles reduce the molecular chain of oxidation and degradation reactions through enhancing mechanical properties of the matrix, while hybrid fillers coupled with the two factors and promoted each other, have the synergistic effect on improving the friction-reducing and wear resistance of composites.

关 键 词：摩擦化学反应 复合材料 摩擦 磨损 

分 类 号：TB332[一般工业技术—材料科学与工程]