王建吉,刘涛,孙旖彤,弥宁
WANG Jian-ji,LIU Tao,Sun Yi-tong,MI Ning

• 1:兰州理工大学
• 2:陇东学院

摘要(Abstract)：

在MMU-2高速端面摩擦试验机上,将4种制作涡旋压缩机齿顶密封条的材料PES、PEEK、纯PTFE、填充PTFE分别与HT250配副,进行干摩擦试验,对比分析在不同线速度下摩擦系数、体积磨损率、磨痕形貌的变化;同时研究填充PTFE在模拟涡旋压缩机工况条件下的摩擦学性能,通过扫描电子显微镜分析摩擦表面转移膜的形成规律,为将该材料应用到齿顶密封当中提供理论依据。结果表明:填充PTFE摩擦性能优于其它几种材料,在不同线速度下摩擦系数变化小,磨损率低,当载荷为300 N,摩擦系数小于0.2,体积磨损率小于5×10~(-6) mm~3/(N·m)。满足涡旋压缩机齿顶密封条在高线速度、低载荷、干摩擦条件下,摩擦系数低、磨损量小的要求。
On MMU-2 high-speed end face friction tester,the dry friction test was carried out by matching four kinds of materials for tooth tip sealing strip of scroll compressor PES,PEEK,pure PTFE,Filled PTFE with HT250,espectively to form friction pairs,and the changes in friction coefficient,lume wear rate and surface morphology were compared and analyzed at different linear speeds,At the same time,he tribological properties of filled PTFE under simulated operating conditions of scroll compressor were investigated,and the formation rule of friction surface transfer film was analyzed through the scanning electron microscope(SEM) in order to provide a theoretical basis for application of these materials to the tooth tip seal,The results show that the friction performance of filled PTFE is better than that of other materials,its friction coefficient at different linear speed has small change and its wear rate is low,when the load is 300 N,its friction coefficient is less than 0.2 and its volume wear rate is smaller than 5×10~(-6) mm~3/(N·m),Therefore,it meets the requirements of low friction coefficient and small wear rate for the tooth tip sealing strip of scroll compressor under the condition of high linear speed,low load and dry friction.

关键词(KeyWords)： 涡旋压缩机;密封材料;填充PTFE;摩擦磨损
scroll compressor;sealing material;filled PTFE;friction and wear

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51665035);; 陇东学院博士基金项目(XYBY1605)

作者(Author): 王建吉,刘涛,孙旖彤,弥宁
WANG Jian-ji,LIU Tao,Sun Yi-tong,MI Ning

参考文献(References)：

• [1]刘兴旺.提高变频涡旋压缩机压缩性能的方法研究[D].兰州:兰州理工大学,2011.
• [2]SHANGGUAN Q Q,CHENG X H.Friction and wear of rare earths modified carbon fibers filled PTFE composite under dry sliding condition[J].Applied Surface Science,2007,253(22):9000-9006.
• [3]Zeynep Parlar,Shahrad Samankan,Vedat Temiz.The effect of counter-face roughness on the tribological behavior of filled and unfilled PTFE[J].Journal of Mechanics Engineering and Automation,2015(5):609-615.
• [4]杨东亚,祁渊,王宏刚,等.PEEK与Si O2填充PTFE复合材料的摩擦磨损性能研究[J].功能材料,2015(10):1047-1051.
• [5]吾良福,徐洪,朱兴炜,等.填充改性聚四氟乙烯及其应用[J].化工生产与技术,2013,20(6):20-23.
• [6]胡亚非,王启立,刘颀,等.石墨密封材料润滑膜形成规律及摩擦磨损研究[J].中国矿业大学学报,2010,39(2):223-226.
• [7]赵普,刘近朱,王齐华,等.聚苯脂、聚酰亚胺填充聚四氟乙烯复合材料的摩擦学性能研究[J].材料科学与工程学报,2003,21(6):851-854.
• [8]李海生,陈英华,吴开波,等.涡旋压缩机齿顶轴向间隙的变化规律[J].兰州理工大学学报,2015,41(4):36-40.
• [9]吴开波,李海生,陈英华,等.涡旋压缩机齿端面密封条的力载荷分布规律的研究[J].流体机械,2014,42(11):38-42.
• [10]王云鹏,孙琨,杨思泽,等.18Ni(300)钢高速干滑动摩擦磨损特性研究[J].摩擦学报,2017,37(2):218-224.
• [11]金石磊,李小慧,单旸.碳纤维增强PTFE复合材料与不同铝合金配副的摩擦磨损性能[J].机械工程材料,2017,41(3):58-62.