Super antiwear properties of polytetrafluoroethylene (PTFE) induced by MeV proton irradiation

被引：6

作者：

Yao, Yuliang ^{[1
]}

Fan, Yong ^{[1
]}

Hao, Liyu ^{[1
]}

Xu, Chuan ^{[1
]}

Sun, Dazhi ^{[2
]}

Fu, Engang ^{[1
]}

机构：

[1] Peking Univ, Sch Phys, Dept Tech Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[2] Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guanghzou, Peoples R China

来源：

POLYMER | 2023年 / 285卷

基金：

中国国家自然科学基金;

关键词：

Polytetrafluoroethylene; Surface modification; Proton irradiation; Antiwear properties; Hardness; INDUCED CROSS-LINKING; ION IRRADIATION; MECHANICAL-PROPERTIES; HIGH-TEMPERATURE; ELECTRON-BEAM; RADIATION; CHEMISTRY; ENERGY;

D O I：

10.1016/j.polymer.2023.126350

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper, the surface of polytetrafluoroethylene (PTFE) was modified by 1 MeV proton beam at high temperature. The changes of wear resistance and hardness of PTFE before and after irradiation were evaluated by ball/pin disk friction loss tester and nanoindentation tester, respectively. The results showed that the wear resistance of PTFE irradiated by proton at high temperature has been significantly enhanced. The mass wear rate decreases from 2.75 x 10(-6) g/Nm to 0.39 x 10(-6) g/Nm, and the wear depth decreases from 29.9 mu m to 8.2 mu m, respectively. Proton irradiation could be a simple and effective method for PTFE surface modification and can significantly improve the wear resistance. The potential chemical reaction mechanism for the improvement of wear resistance of irradiated PTFE in terms of microstructure was discussed. Crosslinking induced by proton irradiation enhanced the interaction force among PTFE molecules, thus the mechanical properties were improved.

引用

页数：9

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