| Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions |
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| 作者姓名： | Huaiyuan Wang Xin Feng Yijun Shi Xiaohua Lu |
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| 作者单位： | State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| 基金项目： | 国家自然科学基金;国家高技术研究发展计划(863计划);国家重点基础研究发展计划(973计划) |
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| 摘 要： | The friction and wear behavior and mechanism as well as the mechanical properties of polytetrafluoroethylene （PTFE） composites filled with potassium titanate whiskers （PTW） and short carbon fibers （CF） under dry, wet and alkaline conditions were investigated. Experiments indicated that owing to appropriate cooling and boundary lubricating effects, the filled PTFE composites showed much lower frictional coefficient and better wear resistance under alkaline than dry and wet sliding conditions. The wear resistance of carbon-fiber-filled PTFE was much better than that of potassium titanate-whisker-filled PTFE composites in water. Results also showed that the transfer film on counterpart rings was significantly hindered by water and alkali. Hydrophilic-filler-reinforced PTFE composites yield higher wear rate when sliding under water.
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| 关 键 词： | 晶须 碳纤维 摩擦系数 碱溶液 |
| 收稿时间： | 2007-05-08 |
| 修稿时间： | 2007-08-08 |
Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions |
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| Huaiyuan Wang Xin Feng Yijun Shi Xiaohua Lu.Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions[J].China Particuology,2007,5(6):414-419. |
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| Authors: | Huaiyuan Wang Xin Feng Yijun Shi Xiaohua Lu |
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| Institution: | State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China |
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| Abstract: | The friction and wear behavior and mechanism as well as the mechanical properties of polytetrafluoroethylene (PTFE) composites filled with potassium titanate whiskers (PTW) and short carbon fibers (CF) under dry, wet and alkaline conditions were investigated. Experiments indicated that owing to appropriate cooling and boundary lubricating effects, the filled PTFE composites showed much lower frictional coefficient and better wear resistance under alkaline than dry and wet sliding conditions. The wear resistance of carbon-fiber-filled PTFE was much better than that of potassium titanate-whisker-filled PTFE composites in water. Results also showed that the transfer film on counterpart rings was significantly hindered by water and alkali. Hydrophilic-filler-reinforced PTFE composites yield higher wear rate when sliding under water. |
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| Keywords: | PTFEcomposites Whiskers Carbon fibers Friction and wear properties Alkaline solution |
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