对苯二胺改性氟化石墨烯对铝合金表面环氧树脂涂层性能的影响  

Effects of p-Phenylenediamine Modified Fluorophenediamine on the Properties of Epoxy Resin Coatings on the Aluminum Alloy Surfaces

作　　者：陈莹 王凯 陈绪蕾 王福明 杨红莉 李雪飞 周敏 窦宝捷 林修洲 CHEN Ying;WANG Kai;CHEN Xulei;WANG Fuming;YANG Hongli;LI Xuefei;ZHOU Ming;DOU Baojie;LIN Xiuzhou(School of Materials Science and Engineering,Sichuan Light Chemical Engineering University,Zigong 643000,China;College of Chemical Engineering,Sichuan Light Chemical Engineering University,Zigong 643000,China;Sichuan Key Laboratory of Material Corrosion and Protection,Zigong 643000,China)

机构地区：[1]四川轻化工大学材料科学与工程学院,四川自贡643000 [2]四川轻化工大学化学工程学院,四川自贡643000 [3]材料腐蚀与防护四川省重点实验室,四川自贡643000

出　　处：《塑料工业》2024年第10期59-66,共8页China Plastics Industry

基　　金：四川省自然科学基金重点项目(2024NSFSC0026);四川轻化工大学科研创新团队计划(SUSE652A008);四川轻化工大学大学生创新创业训练计划项目(省级S202210622035)。

摘　　要：为了改善氟化石墨烯(FG)在环氧树脂(EP)中的分散性,提高涂层致密性和耐蚀性,采用对苯二胺(PPDA)功能化修饰FG得到对苯二胺改性氟化石墨烯(FG-PPDA)。利用红外光谱(FTIR)、X射线衍射仪(XRD)、扫描电子显微镜(SEM)对FG-PPDA进行表征。将FG与FG-PPDA分别掺杂到EP中制备复合涂层,对复合涂层进行电化学测试、中性盐雾实验、拉伸测试和摩擦磨损实验,分析复合涂层的耐腐蚀性能、力学性能和耐磨性能。结果表明,将FG掺杂到EP涂层中能够提高EP涂层的耐腐蚀性能;FG经过PPDA功能化处理后改善了其在EP中的分散性,使FG-PPDA/EP涂层的致密性有所提升,从而增强了涂层的长期耐腐蚀性能。同时,FG-PPDA/EP涂层的拉伸强度为47.7 MPa,磨损率为4×10^(-5)mm^(3)/(m·N),与EP涂层相比,复合涂层的力学性能与耐磨性能明显提升。To improve the dispersion of fluorophenediamine(FG)in the epoxy resin(EP),the density and corrosion resistance of the coatings,p-phenylenediamine(PPDA)was used to functionalize FG,obtaining p-phenylenediamine modified fluorophenediamine(FG-PPDA).FG-PPDA was characterized by infrared spectroscopy(FTIR),X-ray diffractometer(XRD)and scanning electron microscope(SEM).Then the composite coatings were prepared by doping FG or FG-PPDA into EP.The corrosion resistance,mechanical properties and wear resistance of the composite coatings were analyzed by electrochemical test,neutral salt spray test,tensile test,friction and wear test.The results show that the corrosion resistance of EP coatings could be improved by doping FG into EP.After the PPDA functionalization treatment,the dispersion of FG in EP was improved,and the densification of FG-PPDA/EP coating was improved,enhancing the long-term corrosion resistance of the coating.At the same time,the tensile strength of FG-PPDA/EP coating is 47.7 MPa,and the wear rate is 4×10^(-5) mm^(3)/(m·N).Compared with the EP coating,the mechanical properties and wear resistance of the composite coatings are significantly improved.

关 键 词：氟化石墨烯 对苯二胺 环氧树脂 涂层 耐蚀性能 力学性能 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]