两款高速铁路桥梁支座滑块的制备及对比研究

聚四氟乙烯

两款高速铁路桥梁支座滑块的制备及对比研究
姜稳定 黄安民 朱志勇 邓如生株洲时代新材料科技股份有限公司,株洲412001

摘　要:介绍超高分子量聚乙烯（UHMWPE）和聚四氟乙烯（PTFE）两款桥梁支座滑块的制备方法，并对滑块的性能进行了研究。结果表明，UHMWPE复合滑块具有比PTFE滑块更加突出的综合力学性能，且其承载能力高，自润滑性能好，耐磨损性能突出，是高速铁路桥梁支座的理想之选。就磨损机理而言，PTFE滑块主要表现为粘着磨损，而UHMWPE复合滑块则主要表现为磨粒磨损。[著者文摘]

关键词:超高分子量聚乙烯 聚四氟乙烯 滑块 桥梁支座 承载能力 磨损机理
分类号:　TQ325.12 TQ325.4[机标]文献标识码：文章编号：栏目信息：应用
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PREPARATION AND COMPARATIVE STUDY OF TWO KINDS OF SLIDING BLOCKS FOR HIGH-SPEED RAILWAY BRIGDE BEARINGSJiang Wending, Huang Anmin, Zhu Zhiyong, Deng Rusheng Zhuzhou Times New Material Technology Co. Ltd. , Zhuzhou 412001, ChinaAbstract:The preparation methods of two kinds of sliding blocks made from ultra high molecular weight polyethylene（ UHMWPE） composite and pure polytetrafluorethylene（PTFE） powder were introduced respectively. A comparative research was carried on to differentiate the properties from each other. As the research revealed, UHMWPE composite sliding blicks showed better comprehensive mechanical properties, higher bearing capacity, better self-lubricance and lower linear wear rate to those of PTFE sliding blocks, which renders UHMWPE composite sliding blicks to be preferable options for high-speed railway bridge bearings. As for the wear mechanisms were concerned, PTFE blocks mainly showed adhesive abrasion while UHMWPE composite blocks mainly showed grain-abrasion.[著者文摘]

Key words:ultra high molecular weight polyethylene, polytetrafluorethylene, sliding block, bridge bearing, beating capacity, wear mechanism