摘要
采用浇铸法,制备多壁碳纳米管(MWNTs)/环氧树脂(EP)复合材料,利用M-200摩擦磨损试验机研究了MWNTs含量、分散时间及方式对环氧复合材料摩擦磨损性能影响,通过SEM、TEM分析试样磨损形貌表面、MWNTs分散程度。结果表明:碳纳米管添加量1.5%(质量分数)时,MWNTs/EP复合材料比环氧树脂摩擦因数降低17.8%,磨耗率降低91.7%;加入碳纳米管降低了复合材料粘着磨损与疲劳剥落;延长超声波时间及采用高功率超声波仪器能够有效提高碳纳米管分散程度,提高复合材料摩擦磨损性能。
Multi-walled carbon nanotubes （MWNTs）/epoxy resin composites were prepared by casting molding. The wear tests of epoxy composite specimens under air-lubricated condition were carried out on a ring-block wear tester typed M-200, and the worn surface of the composites were examined by a scanning electron microscope （ SEM ）. The dispersion of the CNTs was analyzed by transmission electron microscopy（TEM）. The results show that MWNTs in epoxy composite can reduce the friction coefficient and increase the wear resistance effectively, and decrease the adhesive wear and fatigue spalling. When MWNTs content is 1.5% in weight,the friction coefficient and wear rate of the composite reduce 17.8% and 91.7% respectively. The dispersion of MWNTs can be increased by prolonging the time of sonication dispersion and adopting a larger ＂power sonication device, which improves the friction and wear behavior of nanocomposites containing MWNTs.
出处
《润滑与密封》
CAS
CSCD
北大核心
2007年第8期111-113,117,共4页
Lubrication Engineering
