TiO_2/含氢硅油超疏水防腐涂层的制备及其性能研究  

Preparation and property of TiO_2/PMHS superhydrophobic and anticorrosive coating

作　　者：莫春燕[1] 郑燕升[1,2] 王发龙[1] 胡传波[1] 莫倩[1] 

机构地区：[1]广西科技大学生物与化学工程学院,柳州545006 [2]广西科技大学鹿山学院,柳州545616

出　　处：《化工新型材料》2016年第1期89-91,共3页New Chemical Materials

基　　金：广西教育厅科研项目(201012MS123)

摘　　要：用硬脂酸在TiO_2表面引入疏水性甲基,将改性后TiO_2与含氢硅油(PMHS)杂合,在铝基底上形成超疏水涂层。采用X射线衍射仪、红外光谱、扫描电镜和接触角分析仪,表征涂层的表面形貌和疏水性。结果表明:TiO_2/PMHS复合涂层表面具有微/纳米双重粗糙结构,与水的静态接触角为155°,滚动角8°;采用极化曲线等电化学法对涂层防腐性能进行表征,结果表明其腐蚀电位从裸铝片的-926mV正移至-603mV,腐蚀电流密度从裸铝片的4.68×10-5 A/cm^2下降至6.60×10^(-6)A/cm^2,显示出良好的防腐性能。TiO2 particles were modified by stearic acid in order to be introduced to hydrophobic methyl.Then the modified-TiO2 was blended with polymethylhydrosiloxane,the superhydrophobic composite coating was formed on the alumium substrate.The surface structure and hydrophobicity of coating were studied by X-ray diffractometer,infrared spectroscopy,scanning electron microscopy and contact angle analyzer.The results showed that TiO2/PMHS composite coating with micro/nano double rough structure had a static contact angle of 155°and a rolling angle of 8°against water.The anticorrosion of coating was characterized by electrochemical methods including polarization curve measurement.The results indicated that the coating had a good anticorrosion performance.Compared with the bare alumium sheet,its corrosion potential had a positive shift from-926 mV to-603 mV and its corrosion electric current was decreased from 4.68×10^（-5）A/cm^2 to 6.60×10^（-6）A/cm^2.

关 键 词：含氢硅油 微/纳米粗糙结构 超疏水 防腐 

分 类 号：TQ637[化学工程—精细化工]