硅烷偶联剂对水性环氧涂层耐腐蚀性能的影响  

Impact of silane coupling agents on the corrosion resistance of waterborne epoxy coatings

作　　者：朱丹丹 陈新春 来福琨 杨桓 ZHU Dandan;CHEN Xinchun;LAI Fukun;YANG Huan(Yantai University School of Civil Engineering,Yantai 264003,Shandong,Chian;Xinjiang Institute of Architectural Science and Research Co.,Ltd.,Urumgi 830054,Xinjiang,China)

机构地区：[1]烟台大学土木工程学院,山东烟台264003 [2]新疆建筑科学研究院有限公司,新疆乌鲁木齐830054

出　　处：《工程建设》2024年第2期36-40,共5页Engineering Construction

基　　金：烟台大学研究生科技创新基金项目(GGIFYTU2342)。

摘　　要：金属结构失效往往是因为金属腐蚀,因此提高防护性涂层的耐腐蚀的性能、延长金属结构寿命非常重要。对乙烯基硅烷偶联剂、氨基硅烷偶联剂以及环氧基硅烷偶联剂这3种不同类型硅烷偶联剂对水性环氧涂层的覆盖能力以及耐腐蚀性能的影响进行研究,并确定防腐蚀性能最优的硅烷偶联剂的类型以及用量。结果表明:当水性环氧涂料中加入硅烷偶联剂后涂层的覆盖能力会变好,通过耐化学介质测试和电化学腐蚀电流密度测试结果表明,3种硅烷偶联剂较空白组耐腐蚀性能提升效果最好的掺量均为1%,其中添加1%氨基硅烷偶联剂在60 d后腐蚀电流密度为0.004 9μA/cm^(2),显著低于其他两类硅烷偶联剂。本文内容可为水性环氧树脂及其他水性防腐涂料提高其防腐性能提供参考。Metal structure failure is often due to metal corrosion,so it is important to improve the corrosion resistance of protective coatings and extend the life of metal structures.The effects of three different types of silane coupling agents,vinyl silane coupling agent,amino silane coupling agent and epoxy silane coupling agent are investigated,on the coverage ability and corrosion resistance of waterborne epoxy coatings,and the type and dosage of the silane coupling agent with the optimum corrosion protection performance are determined.The results show that the coverage ability of the coating becomes better when the silane coupling agent is added to the waterborne epoxy coating,and the results of the chemical medium resistance test and electrochemical corrosion current density test show that the dosage of the three types of silane coupling agent with the best effect of improving the corrosion resistance compared with that of the blank group is 1%,and the corrosion current density of the added 1%aminosilane coupling agent is 0.0049μA/cm^(2) after 60 d,which is significantly lower than the other two types of silane coupling agent.The content of this paper can provide a reference for waterborne epoxy resin and other waterborne anticorrosive coatings to improve their anticorrosive properties.

关 键 词：硅烷偶联剂 水性环氧涂料 腐蚀电流密度 防腐蚀 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]