Tribological properties of radiation cross-linked polytetrafluoroethylene sheets
Tribological properties of radiation cross-linked polytetrafluoroethylene sheets
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辐射交联聚四氟乙烯片材的摩擦学性能
DOI：
10.1016/j.wear.2010.05.001
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发表时间：
2010-07
期刊：
影响因子：
5
通讯作者：
Tang, Zhongfeng
中科院分区：
文献类型：
--
作者：
Wang, Mouhua;Zhao, Yanning;Wu, Guozhong;Tang, Zhongfeng
在氮气气氛中在335±5°C下通过电子束照射使聚四氟乙烯（PTFE）片交联。随着辐照剂量的增加，交联PTFE（X-PTFE）片逐渐变得透明，熔点和结晶热逐渐降低。在环-环摩擦磨损试验机和块-环摩擦试验机上研究了X-PTFE片在干摩擦条件下的摩擦学性能。结果表明，X-PTFE的摩擦系数随吸收剂量的增加而增加，在3000 kGy剂量下交联后，摩擦系数增加约5%。X-PTFE的耐磨性的显著改善特别令人感兴趣。在150 kGy剂量下，X-PTFE的耐磨性提高了3个数量级。扫描电子显微镜（SEM）分析显示，在摩擦学测试后，原始PTFE片材的研磨表面是光滑的，并且碎片是以薄片的形式;而X-PTFE的磨损表面是粗糙的，并且磨损的碎片是以细粉末的形式。X-PTFE的三维网络结构使其具有优异的耐磨性能。
A polytetrafluoroethylene (PTFE) sheet was cross-linked by electron beam irradiation at 335±5°C in a nitrogen gas atmosphere. With increasing dose, the cross-linked PTFE (X-PTFE) sheet became transparent, and the melting point and the heat of crystallization decreased gradually. The tribological behavior of the X-PTFE sheet was investigated on a ring-on-ring tribometer and a block-on-ring friction tester under dry friction conditions. It was shown that the friction coefficient of X-PTFE increased with the absorbed dose, and that the increase was about 5% for cross-linking at a dose of 3000kGy. The substantial improvement of the wear resistance of X-PTFE is of particular interest. The wear resistance of X-PTFE was improved by three orders of magnitude at a dose of 150kGy. Scanning electron microscopy (SEM) analysis revealed that, after the tribological test, the ground surface of the virgin PTFE sheet was smooth, and the debris was in the form of flakes; while the worn surface of X-PTFE was rough, and the abraded debris was in the form of a fine powder. The three-dimensional network of X-PTFE is responsible for its excellent wear resistance behavior.
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影响因子：
2.9
作者：
SUN, JZ;ZHANG, YF;ZHU, XG
通讯作者：
ZHU, XG
利用人工神经网络预测碳纤维和TiO2协同增强聚四氟乙烯复合材料的摩擦学性能
影响因子：
8.4
作者：
Feng, Xin;Shi, Yijun;Wang, Huaiyuan;Lu, Xiaohua;Zhu, Jiahua
通讯作者：
Zhu, Jiahua
影响因子：
3
作者：
Xianhua Cheng;Yujun Xue;C. Xie
通讯作者：
Xianhua Cheng;Yujun Xue;C. Xie
影响因子：
1.7
作者：
J. Li;Y. Su
通讯作者：
J. Li;Y. Su
影响因子：
2.9
作者：
Seguchi, T
通讯作者：
Seguchi, T