模拟深海环境下超高分子量聚乙烯及其复合材料的摩擦磨损行为研究

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(1������ State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences, Lanzhou Gansu 730000,China;2������ University of Chinese Academy of Sciences,Beijing 100049,China)
(1) :14-19.
Cite as:LIU Hao,WANG Jianzhang,YAN Fengyuan.Wear behaviour of UHMWPE composites in simulated deep sea envi⁃ ronment[ J] .Lubrication Engineering,2019,44(1) :14-19.
2019 年 1 月 第 44 卷 第 1 期
润滑与密封
LUBRICATION ENGINEERING
Jan������ 2019 Vol������ 44 No������ 1
DOI: 10������ 3969 / j������ issn������ 0254-0150������ 2019�����wk.baidu.com 01������ 003 文献引用: 刘昊,王建章,阎逢元.模拟深海环境下超高分子量聚乙烯及其复合材料的摩擦磨损行为研究[ J] .润滑与密封,2019,44
关键词: 超高分子量聚乙烯; 静压; 海水; 摩擦磨损性能 中图分类号: TG172������ 2; TH117������ 1
Wear Behaviour of UHMWPE Composites in Simulated Deep Sea Environment
LIU Hao1,2 WANG Jianzhang1 YAN Fengyuan1
Keywords:UHMWPE;hydrostatic pressure;artificial seawater;wear behaviour
(1������ 中国科学院兰州化学物理研究所, 固体润滑国家重点实验室 甘肃兰州 730000; 2������ 中国科学院大学 北京 100049)
摘要: 使用自行设计的高压摩擦磨损试验机考察超高分子量聚乙烯及其碳纤维、 玻璃纤维填充复合材料在模拟深 海环境下的摩擦磨损性能, 并研究海水静压对材料吸水率、 化学稳定性以及塑化作用的影响规律。 研究表明, 海水静 压对边界润滑段的摩擦因数影响很小, 但显著增大了弹流段的摩擦因数; 吸水过程增大了超高分子量聚乙烯及其复合 材料在静压下的磨损率, 其原因可能在于静压增大了材料的吸水率, 影响了材料的化学稳定性并加速了材料的塑化; 碳纤维、 玻璃纤维均有助于提升超高分子量聚乙烯在海水静压下的耐磨性能, 其中, 碳纤维填充高分子量聚乙烯在海 水静压下的耐磨性能优于玻璃纤维填充高分子量聚乙烯, 其磨损率基本不受海水静压影响。
Abstract:The friction and wear behaviors of UHMWPE and its composites filled by carbon fiber and glass fiber respec⁃ tively were investigated by a self⁃designed friction test,by which the deep sea environment was simulated.The influence of seawater hydrostatic pressure on seawater absorption,chemical stability and plastication effect was further studied.The results show that hydrostatic pressure significantly increases the friction coefficient of the hydrodynamic region,while it has little influence on that of the boundary lubrication region.After saturated in seawater under specific hydrostatic pressure,the wear rate of UHMWPE and its composites is increased. The decreased anti⁃wear performance is possibly a combined effect of increased seawater absorption,damaged chemical stability and accelerated plastication effect.Both carbon fiber and glass fiber can improve the anti⁃wear performance of the UHMWPE matrix.The wear rate of the composite filled by carbon fiber is almost unaffected by the applied hydrostatic pressure,which is much lower than that of the composite filled by glass fiber.
模拟深海环境下超高分子量聚乙烯及其复合材料的摩擦磨损行为研究∗
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刘 昊1,2 王建章1 阎逢元1
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