Mechanical and Barrier Properties of Epoxy/ultra-short Glass Fibers Composite Coatings  

作　　者：Yongsheng Hao Fuchun Liu En-Hou Han 

机构地区：[1]State Key Laboratory for Corrosion and Protection, Institute of Metal Research, Chinese Academy of Sciences, Shenyang110016, China

出　　处：《Journal of Materials Science & Technology》2012年第12期1077-1084,共8页材料科学技术（英文版）

基　　金：the National Key Technology R&D Program (Grant No. 2007BAB27B02-02, 2009BAE70B01, 2009BAE70B02 and 2009BAE70B03)for supporting this work

摘　　要：Epoxy coatings containing different volume fractions of ultra-short glass fibers were prepared successfully. Ultra-short glass fiber not only can improve the hardness, adhesion of the coating, and glass transition tem-perature （Tg）, but also can decrease the coefficient of thermal expansion （CTE） of the coating. Electrochemical impedance spectroscopy （EIS） was used to evaluate the barrier properties of the coatings containing different volume fractions of ultra-short glass fibers. The EIS results showed that the coating had the best barrier property when it contained 20% （volume fraction） ultra-short glass fibers. The functions of the ultra-short glass fibers in epoxy coating are two fold： first, they can improve the coating mechanical properties as reinforcement materials; second, they parallel to the substrate and inhibit the corrosive medium to pass through the coating.Epoxy coatings containing different volume fractions of ultra-short glass fibers were prepared successfully. Ultra-short glass fiber not only can improve the hardness, adhesion of the coating, and glass transition tem-perature （Tg）, but also can decrease the coefficient of thermal expansion （CTE） of the coating. Electrochemical impedance spectroscopy （EIS） was used to evaluate the barrier properties of the coatings containing different volume fractions of ultra-short glass fibers. The EIS results showed that the coating had the best barrier property when it contained 20% （volume fraction） ultra-short glass fibers. The functions of the ultra-short glass fibers in epoxy coating are two fold： first, they can improve the coating mechanical properties as reinforcement materials; second, they parallel to the substrate and inhibit the corrosive medium to pass through the coating.

关 键 词：Glass fiber Barrier Electrochemical impedance spectroscopy Thermal expansion 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TG174.442[金属学及工艺—金属表面处理]