34. Influence of polytetrafluoroethylene (PTFE) content on mechanical and tribological properties of poly(ether ether ketone)/PTFE coatings prepared by electrostatic powder spraying technique
writer：Shiyang Zhu, Yunhe Zhang, Qingwei Li, Lingsong Wei, Shaowei Guan
keywords：Poly(ether ether ketone), polytetrafluoroethylene, coating, electrostatic powder spraying,tribological performance
source：期刊
specific source：HIGH PERFORMANCE POLYMERS,2015,27,3-9
Issue time：2015年
Poly(ether ether ketone) (PEEK)/polytetrafluoroethylene (PTFE) composite coatings with different PTFE contents were successfully fabricated using electrostatic spraying. The crystalline structure of the PEEK/PTFE coatings was characterized by X-ray diffraction analysis. The effects of PTFE addition in the composite coatings on the hardness, adhesion, and tribological performance were discussed. The hardness and adhesion level of PEEK/PTFE coatings were not significantly affected by the addition of PTFE, which indicated that the coating possesses excellent mechanical properties. The PEEK/PTFE coatings showed better tribological performance than traditional PEEK coating. The PTFE/PTFE-3 (3 wt% mass fraction of PTFE in composite coating) coating has a friction coefficient of 0.133 (PEEK is 0.149) and wear rates of 3.8 x 10(-5) mm(3) N-1 m(-1) (PEEK is 4.4 x 10(-5) mm(3) N-1 m(-1)).