氧化锌/聚苯乙烯超疏水复合涂层的制备及其性能  

Preparation of ZnO/polystyrene superhydrophobic composite coating and its performance

作　　者：青勇权[1] 郑燕升[1,2] 胡传波[1] 王勇[1] 龚勇[3] 何易[1] 莫倩[1] 

机构地区：[1]广西科技大学生物与化学工程学院,广西柳州545006 [2]广西科技大学鹿山学院,广西柳州545616 [3]四川理工学院材料与化学工程学院,四川自贡643000

出　　处：《电镀与涂饰》2013年第8期59-63,共5页Electroplating & Finishing

基　　金：广西研究生教育创新计划资助项目(2013105940817M01)

摘　　要：通过十二氟庚基丙基三甲氧基硅烷对ZnO粒子进行改性,使ZnO表面由亲水性变为疏水性,然后将改性ZnO粒子与低表面能的热塑性树脂聚苯乙烯杂合,于160°C下烘烤25min,在钢片上制得改性ZnO/聚苯乙烯复合超疏水涂层。采用红外光谱、扫描电镜和接触角分析仪对涂层表面结构和疏水性进行了研究。结果表明,改性后的ZnO粒子表面引入了疏水性的─CH3和─CF2─,形成微/纳米双重粗糙结构。当改性ZnO和聚苯乙烯的质量比为7∶3时,所得复合涂层表面与水的静态接触角为156°,滚动角8°,与钢片的附着力为2级,硬度B～H,冲击强度大于50kgcm,吸水率为7.3%,具有良好的应用前景。ZnO particles were modified by dodecafluoro- heptyl-propyl-trimethoxysilane for making their surface from hydrophilic to hydrophobic, and then blended with polystyrene （a low-surface-energy thermoplastic resin） and baked at 160℃ for 25 min to prepare a modified-ZnO/ polystyrene superhydrophobic composite coating on the surface of steel sheet. The surface structure and hydrophobicity of the coating was studied by infrared spectroscopy, scanning electron microscopy, and contact angle analyzer. The results showed that--CH3 and -CF2- groups are introduced on the surfaces of ZnO particles after modification, leading to a micro- and nano-meter double rough structure. The composite coating obtained at mass ratio of modified ZnO to polystyrene 7：3 has a static contact angle of 156° and a rolling angle of 8° against water, and features the follows performances： 2nd-grade adhesion to steel substrate, B-H hardness, impact strength 〉50 kg.cm, and water absorption rate of 7.3%. The modified ZnO/ polystyrene superhydrophobic composite coating has good application prospect.

关 键 词：超疏水涂层 氧化锌 十二氟庚基丙基三甲氧基硅烷 改性 聚苯乙烯 疏水性 

分 类 号：TG174.46[金属学及工艺—金属表面处理]