纳米金刚石与聚醚醚酮填充改性聚四氟乙烯复合材料的摩擦学性能  

Tribological properties of PTFE-based composites filled with nanodiamond and PEEK

作　　者：乔志军[1] 薄振辰[1] 王宁[1] 张兴祥[1] 师春生 

机构地区：[1]天津工业大学功能纤维研究所,天津300160 [2]天津大学材料科学与工程学院,天津300072

出　　处：《功能材料》2010年第10期1838-1841,共4页Journal of Functional Materials

基　　金：天津市高等学校科技发展基金资助项目(20071213)

摘　　要：采用模压-烧结方法制备了纳米金刚石(ND)与聚醚醚酮(PEEK)填充改性的聚四氟乙烯(PTFE)复合材料,并研究了复合材料的摩擦磨损性能及其微观结构。结果表明,随着PEEK含量增加到20%(质量分数),复合材料的耐磨性显著提高;而较低填充量的ND可以在降低复合材料摩擦系数的情况下提高其耐磨性能。1.0%ND/20%(质量分数)PEEK/PTFE复合材料的减摩耐磨性能优良,与纯PTFE相比,该复合材料的摩擦系数下降约20%,耐磨性能提高120倍,原子力显微分析表明该复合材料中ND分布均匀。PTFE-based composites filled with nanodiamond（ND） and PEEK were prepared by means of mold compressing and sintering.The tribological properties and microstructure of PTFE-based composites were investigated.The results showed that the wear resistance of PTFE-based composites was obviously improved with the increasing content of PEEK up to 20wt%.By the addition of small amount of ND,the wear resistance of PTFE-based composite was found to be enhanced and the friction coefficient was decreased.Compared with the pure PTFE,the friction coefficient of the 1.0wt%ND/20wt% PEEK/PTFE composite was decreased by 20% and the wear resistance was increased about 120 times respectively.Atomic force microscopy （AFM） measurements indicated that ND particles were homogeneously dispersed in the matrix of PTFE-based composites.

关 键 词：纳米金刚石 聚醚醚酮 聚四氟乙烯 摩擦系数 磨损量 

分 类 号：TB332[一般工业技术—材料科学与工程]