Research on high temperature friction properties of PTFE/Fluorosilicone rubber/silicone rubber

被引：0
|
作者：
Qi M. [1 ,2 ]
Jia X. [2 ]
Wang G. [1 ]
Xu Z. [1 ,2 ]
Zhang Y. [1 ]
He Q. [1 ]
机构：
[1] Key Laboratory of Aeronautical Special Rubber, Anyang Institute of Technology, Anyang
[2] School of Mechatronics Engineering, Henan University of Science and Technology, Luoyang
来源：
Polymer Testing | 2020年 / 91卷
关键词：
Fluorosilicone rubber; High temperature friction; Polytetrafluoroethylene; Silicone rubber;
D O I：
10.1016/j.polymertesting.2020.106817
中图分类号：
学科分类号：
摘要：
Silicone rubber (MVQ) has excellent heat resistance, but poor high temperature friction stability, which limits its application in the field of high temperature sealing. Polytetrafluoroethylene (PTFE) is self-lubricating, but its compatibility with rubber is relatively weak. In order to improve the high-temperature friction property of silicone rubber, fluorosilicone rubber (FVMQ) was used as a compatibilizer, and PTFE was added to MVQ by mechanical blending. The friction and wear properties of PTFE/FVMQ/MVQ composites at different temperatures were studied. The results show that compared with MVQ, the mechanical properties of PTFE/FVMQ/MVQ composites was basically unchanged, the coefficient of friction was hardly affected by temperature, and the amount of wear decreased with increasing temperature. PTFE/FVMQ/MVQ composites showed excellent high-temperature abrasion resistance. The high-temperature wear mode was mainly changed from abrasive wear to adhesive wear. The molten layer formed by high-temperature friction can prevent air from directly contacting the surface rubber, which inhibited rubber surface oxidation reaction process. © 2020 Elsevier Ltd
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