文章摘要
张新瑞,裴先强,王廷梅,王齐华.纳米氧化锌和石墨填充聚酰亚胺摩擦学性能研究[J].润滑与密封,2014,39(3):1-3
纳米氧化锌和石墨填充聚酰亚胺摩擦学性能研究
  
DOI:10.3969/j.issn.0254-0150.2014.03.001
中文关键词: 聚酰亚胺复合材料  纳米氧化锌  摩擦与磨损
英文关键词: polyimide composites  nano ZnO  friction and wear
基金项目:国家杰出青年基金项目(51025517);国家自然科学青年基金项目(51103168).
作者单位E-mail
张新瑞 中国科学院兰州化学物理研究所 xruiz@licp.cas.cn. 
裴先强 中国科学院兰州化学物理研究所  
王廷梅 中国科学院兰州化学物理研究所  
王齐华 中国科学院兰州化学物理研究所  
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中文摘要:
      采用M-2000 型摩擦磨损试验机考察单一纳米氧化锌(ZnO)和石墨以及二者复合填充聚酰亚胺(PI) 复合材料在干摩擦下与GCr15 轴承钢对摩时的摩擦磨损性能,并利用扫描电子显微镜分析PI 复合材料及其对偶件磨损表面形貌状况。结果表明,填充纳米ZnO后,PI复合材料的摩擦学性能变差,填充石墨后,PI复合材料摩擦学性能显著改善;而复合填充纳米ZnO和石墨后PI复合材料的摩擦学性能最佳,即二者存在明显的协同效应。PI 复合材料的摩擦磨损性能同其在偶件磨损表面形成的转移膜的性质密切相关,纳米ZnO能显著增强转移膜与对偶件的结合强度,不同PI复合材料呈现不同的磨损机制。
英文摘要:
      The effects of addition of graphite(Gr)and nano ZnO on the tribological properties of polyimide(PI)composites against GCr15 steel were studied using a block on ring arrangement.The morphologies of the worn surface of PI composites and counterpart were observed with Scanning Electron Microscope.Experimental results reveal that single incorporation of Gr significantly improves the friction reducing and anti wear abilities of the PI composites.However,nano ZnO deteriorates the wear resistance of the PI composite drastically as single filler.A synergistic effect is found for the combination of nano ZnO and Gr,which leads to the best tribological properties.The friction and wear behaviors of the filled PI composites are closely related to the characteristics of their transfer film formed on the counterpart steel surface.Nano ZnO can improve the adhesion between the transfer film and the counterpart steel ring,and the different PI composites have different wear mechanism.
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