Study on friction and wear properties of PTFE filled with #br#
tungsten disulfide for friction pendulum bearing
Zhao Guifeng1 Ma Yuhong2,3,4 Hong Difu2,3,4 Zhu Zhenyang1
1. School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;
2. Earthquake Engineering Research & Test Center, Guangzhou University, Guangzhou 510405, China;
3. Guangdong Provincial Key Laboratory of Earthquake Engineering and Applied Technology, Guangzhou 510405, China;
4. Key Laboratory of Earthquake Resistance Earthquake Mitigation and Structural Safety of the Ministry of Education, Guangzhou 510405, China
Abstract：In order to solve the problems of high wear rate, high cold flow property and high melt viscosity of PTFE for friction pendulum isolation bearing, tungsten disulfide (WS2) with different content was added to PTFE material. Based on experimental study on the basic physical and mechanical properties of PTFE filled with WS2, the friction and wear properties of friction pendulum bearings were studied, the relationship between horizontal loading speed, compressive stress and friction coefficient were analyzed. Then, the recommended value of WS2 content in PTFE was given comprehensively. Meanwhile, the finite element analysis and experimental verification of the friction pair bearings were carried out by using ABAQUS software. The results show that adding 2% and 4% WS2 to modify PTFE can significantly improve the wear resistance of PTFE on the premise of ensuring the basic physical and mechanical properties, and the friction coefficient is similar to that of pure PTFE, which is a better method to improve the performance of friction pendulum bearings for bridges.
赵桂峰 马玉宏 洪迪甫 朱震阳. 二硫化钨改性聚四氟乙烯摩擦摆支座摩擦磨耗性能研究[J]. 土木工程学报, 2020, 53(S2): 272-279.
Zhao Guifeng Ma Yuhong Hong Difu Zhu Zhenyang. Study on friction and wear properties of PTFE filled with #br#
tungsten disulfide for friction pendulum bearing. 土木工程学报, 2020, 53(S2): 272-279.
