可熔性聚四氟乙烯复合材料的摩擦磨损与密封性能的研究  

Research of the Friction and Wear and Sealing Properties of PFA Composites

作　　者：叶素娟 禹权 范清 张红烨 谭锋 

机构地区：[1]广州机械科学研究院有限公司,广东广州510700 [2]金发科技股份有限公司,广东广州510670

出　　处：《塑料工业》2015年第12期18-22,共5页China Plastics Industry

基　　金：广州市科技计划项目珠江科技新星专项(项目编号:1517000105)

摘　　要：采用石墨、碳纤维、玻璃纤维、青铜和聚醚醚酮(PEEK)改性,制备了可熔性聚四氟乙烯(PFA)复合材料。实验结果表明,填料可提高PFA复合材料的硬度和抗压缩蠕变性,但却会降低拉伸强度。石墨、碳纤维、玻璃纤维、青铜和PEEK可提高PFA复合材料的抗磨损性能,其中碳纤维改性的PFA复合材料的磨损率最低,石墨可降低PFA的摩擦因数。碳纤维改性的PFA密封圈的密封性能良好,与传统模压PTFE密封圈相比,泄漏量降低了约66%。Graphite, carbon fiber, glass fiber, bronze and polyetheretherketone （PEEK） were used to fill poly[ tetrafluoroethylene-co-（perfluoroalkylvinylether）] （PFA） to prepare PFA composites. The results show that the fillers enhance the hardness and compressive creep properties but lower the tensile strength of the PFA composites. Graphite, carbon fiber, glass fiber, bronze and PEEK improve the wear resistance of the PFA composites, the carbon fiber filled PFA composites have the lowest wear rates, and graphite lowers the friction coefficient of PFA composites. The sealing properties of carbon fiber filled PFA composite seals are good with the leakage lowered by 66% compared with the traditional PTFE seals.

关 键 词：可熔性聚四氟乙烯 复合材料 摩擦 磨损 密封 

分 类 号：TB33[一般工业技术—材料科学与工程]