中国塑料2024，Vol.38Issue(4)：6-12,7.DOI:10.19491/j.issn.1001-9278.2024.04.002
表面修饰三氧化钨填充聚四氟乙烯复合材料的制备及其性能研究
Preparation and properties of surface-modified tungsten trioxide-filled polytetrafluoroethylene composites
摘要
Abstract
To improve the wear resistance of polytetrafluoroethylene(PTFE),KH560-surface-modified and non-surface-modified tungsten trioxide(WO3)filled polytetrafluoroethylene composites were comparatively studied.The PTFE/na-no-WO3 composites were prepared through cold pressing and sintering,and their mechanical and tribological properties were investigated by using material testing and wear testing machines.The effects of nano-WO3 content and surface mod-ification on the properties of the composites were also investigated.The results indicated that grafting KH560 on the sur-face of nano-WO3 improved the compatibility between the PTFE matrix and modified nano-WO3 and thus improved the mechanical properties of the PTFE/nano-WO3 composites.Compared to pure PTFE,the composite containing 5 wt%modified nano-WO3 showed a decrease in tensile strength by 17.7%,but an increase in elongation at break increased by 43.5%and in bending strength by 16.1%.Compared to the composites with unmodified nano-WO3,the introduction of modified nano-WO3 effectively improved the wear resistance of PTFE.The friction coefficient and wear rate of the composite containing 5 wt%modified nano-WO3 were reduced by 14.2%and 73.4%,respectively,compared to those of pure PTFE.The findings of this work will provide a technical reference for the application of PTFE and the research and development of new materials.关键词
纳米三氧化钨/聚四氟乙烯/表面修饰/耐磨性能/拉伸性能Key words
tungsten trioxide/polytetrafluoroethylene/surface modification/wear resistance/tensile property分类
化学化工引用本文复制引用
林煦航,钱善华,张炜,卞达,倪自丰..表面修饰三氧化钨填充聚四氟乙烯复合材料的制备及其性能研究[J].中国塑料,2024,38(4):6-12,7.基金项目
2023年江苏省研究生科研与实践创新计划项目(SJCX23_1234) （SJCX23_1234）
江苏省食品先进制造装备技术重点实验室自主研究课题资助项目(FMZ202204) （FMZ202204）
国家自然科学基金项目(52375184) （52375184）
