Preparation and tribological behavior of polytetrafluoroethylene/metal mesh composites with sandwich structure |
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| Authors: | Wenli Zhang Xiaolei Li Yan Zhang Yu Dong Weigang Yao Lei Liang Xiaowen Qi |
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| Affiliation: | 1. School of Mechanical Engineering, Yanshan University, Qinhuangdao, China;2. Tianjin Research Institute for Advanced Equipment, Tsinghua University, Tianjin, China;3. The School of Mechanical Engineering in Yanshan University, AVIC Shenyang Aircraft Design and Research Institute, Shenyang, China;4. School of Civil and Mechanical Engineering, Curtin University, Perth, Western Australia, Australia;5. Shanghai Research Institute Of Synthetic Resins Co.,Ltd, Shanghai, China |
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| Abstract: | Polytetrafluoroethylene (PTFE) owns an excellent self-lubricating performance, but its wear rate is very high due to the large-scale spalling of the matrix in the friction. In this paper, A new kind of PTFE composites with sandwich structure was prepared by layer-press technology, whose middle layer is filled with metal mesh. The influence of the mesh structure and mesh density of middle metal layer on tribological properties of composites were researched in detail. The results revealled that the metal mesh located in the composites can efficiently prevent the large-scale spalling of PTFE, which induces the sample of PTFE/500# plain woven dutch metal mesh (PTFE-500#PWD) to have a lower wear rate (9 × 10?5 mm3/Nm) and COF (0.106) under the fixed experimental condition. The prepared PTFE/metal mesh composites reveal excellent anti-friction and anti-wear performance, which can be used to fabricate a new kind of self-lubricating materials. |
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| Keywords: | composites friction thermoplastics wear and lubrication |
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