摘要
以三氟氯乙烯/四氟乙烯-烷基乙烯基醚/酯(FEVE)为基料,使用3种不同粒径的聚四氟乙烯(PTFE)作为润滑防腐填料,采用喷涂法及室温固化在样片表面制备了兼具减摩和耐腐蚀功能的氟碳复合涂层材料。通过力学性能测试对复合涂层的硬度和粘附力进行评价。通过多功摩擦磨损试验机测试涂层在干摩擦以及水、油润滑环境下的减摩性能并进行分析。通过涂层浸泡实验和扫描电子显微镜(SEM)对复合涂层的耐腐蚀性能进行表征和分析。结果表明,适量的PTFE可以有效降低氟碳复合涂层的摩擦因数,当PTFE与FEVE的质量比为4.5∶3时,涂层在干摩擦、水润滑时的摩擦因数分别为0.067、0.062,与纯FEVE涂层相比分别降低了85%和92%。此外,当PTFE粒径为5μm时,涂层在油润滑条件下摩擦因数仅为0.055,同时复合涂层具有优异的耐腐蚀性能。
Using fluorinated ethylene/vinyl monomer copolymerized fluorocarbon resin(FEVE)as the bonding base materials and three different particle sizes of polytetrafluoroethylene(PTFE)as the lubricant and anti-corrosion filler,a fluorocarbon composite coating material with both friction and corrosion resistance was prepared on the surface of the sample by spraying and curing at room temperature.The hardness and adhesion of the composite coating is evaluated by mechanical properties testing.The friction reduction properties of the coatings were tested and analyzed by means of a multifunctional friction and wear tester in dry friction as well as in water and oil lubricated environments.The corrosion resistance of the composite coating was characterized and analyzed by coating immersion tests and scanning electron microscope(SEM).The results show that the appropriate amount of PTFE can effectively reduce the friction factor of the fluorocarbon composite coating.When the mass ratio of PTFE to FEVE is 4.5∶3,the friction factor of the coating in dry friction and water lubrication is 0.067 and 0.062 respectively,reducing 85%and 92%respectively compared with the pure FEVE coating.In addition,when the PTFE particle size is 5μm,the friction factor of the coating is only 0.055 under oil lubrication,while the composite coating has excellent corrosion resistance.
作者
张博超
叶向东
郗长青
李冀
ZHANG Bochao;YE Xiangdong;XI Changqing;LI Ji(School of Mechanical and Electrical Engineering, Xi'an University of Architecture and Technology,Xi 'an 710055, China;Xi'an University of Architecture and Technology, Shaanxi Provincial Key Laboratory of Nanomaterials and Technology, Xi'an 710055, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第7期7096-7101,共6页
Journal of Functional Materials
基金
陕西省教育厅重点实验室科学基金项目(17JS072)
陕西省自然科学基金面上项目(2019JM-566)。
关键词
聚四氟乙烯
氟碳复合涂层
力学性能
摩擦性能
耐腐蚀性能
polytetrafluoroethylene
fluorocarbon composite coating
mechanical properties
anti-friction performance
corrosion resistance
