文章摘要
高 贵,王宏刚,任俊芳,陈生圣.有机填料填充聚四氟乙烯复合材料摩擦学及力学性能[J].润滑与密封,2014,39(6):83-86
有机填料填充聚四氟乙烯复合材料摩擦学及力学性能
  
DOI:10.3969/j.issn.0254-0150.2014.06.015
中文关键词: 聚四氟乙烯  有机填料  力学性能  摩擦学性能
英文关键词: PTFE  organic fillers  mechanical properties  tribological behavior
基金项目:
作者单位E-mail
高 贵 中国科学院兰州化学物理研究所 gaogui@licp.cas.cn 
王宏刚 中国科学院兰州化学物理研究所  
任俊芳 中国科学院兰州化学物理研究所  
陈生圣 中国科学院兰州化学物理研究所  
摘要点击次数: 853
全文下载次数: 0
中文摘要:
      采用共混-冷压-烧结-整形的工艺制备有机物填充聚四氟乙烯(PTFE)复合材料,考察相同含量的不同有机填料对PTFE复合材料力学性能和摩擦学性能的影响。结果发现,加入有机填料后,复合材料的拉伸强度降低,但硬度和压缩强度均提高;有机填料有效地改善了PTFE复合材料的摩擦学性能,其中,质量分数15%聚苯酯填充的PTFE复合材料减摩效果最好,质量分数15%聚酰亚胺填充的PTFE复合材料的耐磨损性能最优。相比之下,质量分数15%芳纶填充的PTFE复合材料摩擦磨损性能及力学性能最好,其耐磨损性能较纯PTFE提高了近400倍,而摩擦因数仅为纯PTFE的84%。其原因在于芳纶的加入有效地改变了摩擦机制,能形成均匀连续的转移膜,进而降低了磨损。
英文摘要:
      The PTFE composites filled with same content of different organic fillers were prepared by molding sintering stereotyping method,and their tribological behaviors and mechanical properties were studied.The results show the hardness and compressive strength of the composites are increased,but the tensile strength is reduced when filling the organic fillers.The tribological properties of PTFE composites are effectively improved by the organic fillers,among them,the PTFE composite with 15%(mass fraction) polybenzoate has the lowest friction coefficient,the PTFE composite with 15% polyimide has the lowest wear volume.By comparison,the PTFE composite with 15% aramid fiber has the best tribological behavior,its wear resistance is increased nearly 400 times compared with pure PTFE,and its friction coefficient is only 84% of pure PTFEs.The reason is that the aramid fiber filler can change the friction mechanism of the composites,can form uniform and continuous transfer film in the friction surface to reduce the wear.
查看全文   查看/发表评论  下载PDF阅读器
关闭

分享按钮