模板法制备耐久性疏水环氧涂层  

Preparation of Robust Hydrophobic Epoxy Coating by Template Method

作　　者：朱鑫睿 高永盛 张衍[1] 刘育建[1] ZHU Xinrui;GAO Yongsheng;ZHANG Yan;LIU Yujian(Key Laboratory of Specially Functional Polymeric Materials and Related Technology,Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China)

机构地区：[1]华东理工大学材料科学与工程学院,特种功能高分子材料及相关技术教育部重点实验室,上海200237

出　　处：《华东理工大学学报（自然科学版）》2021年第3期272-277,共6页Journal of East China University of Science and Technology

基　　金：中央高校基本科研业务费专项资金资助(JKD01211701)。

摘　　要：选用综合性能优异的环氧树脂为基体,通过复型氯化钠辅助刻蚀的有机硅树脂模板,制备了疏水性环氧涂层。研究了氯化钠浓度、喷涂次数对涂层微结构和润湿性能的影响。结果表明:随着氯化钠质量分数和喷涂次数的增加,环氧涂层表面逐渐形成了阶梯状的多级粗糙结构,疏水性明显提高,表面接触角从未改性前的80.2°提高至130.0°;涂层具有优异的耐强酸和强碱性能;经过50次摩擦实验后,疏水性未发生改变;多孔有机硅模板在20次浇注-脱模循环后形貌保持完好,可以重复使用。A hydrophobic coating was prepared via a simple NaCl-dissolution-assisted etching silicon template method.Epoxy resins with excellent properties were selected as the matrix.The effect of sodium chloride concentration and spraying times on the microstructure and wetting properties of the coatings were studied.The results showed that a multi-stepped rough structure was formed gradually with the increase of salt concentration and the spray times.After using saturated salt solution spraying 30 times,the water contact angle(WCA)of the surface increased from 80.2°to 130.0°,indicating its good hydrophobicity.Besides,the epoxy coating showed superior abrasion resistance and chemical stability for strong acid and alkali solutions.Even after 50 times of abrasion test,the hydrophobicity of the surface showed ignorable variations.Furthermore,the morphology of the prepared porous silicone template retained well after 20 cycles of pouring-demoulding,indicating its excellent reusable performance.

关 键 词：疏水性 模板法 刻蚀 环氧涂层 

分 类 号：TQ323.5[化学工程—合成树脂塑料工业]