喷涂法制备硅藻土/Al_(2)O_(3)超疏水涂层  

Preparation of diatomite/Al_(2)O_(3) superhydrophobic coating by spraying

作　　者：张雪梅[1] 杨杰 王广 牛凤兴[1] 高云艳 梅新奇 ZHANG Xuemei;YANG Jie;WANG Guang;NIU Fengxing;GAO Yunyan;MEI Xinqi(Shaanxi Key Laboratory of Chemical Reaction Engineering,College of Chemistry and Chemical Engineering,Yan'an University,Yan'an 716000,Shaanxi,China;Ningxia Baichuan New Materials Co.,Ltd.,Yinchuan 750409.Ningxia,China;Shaanxi Jingyi Chemical Co.,Lid.,Yulin 719000,Shaanxi,China)

机构地区：[1]延安大学化学与化工学院陕西省化学反应工程重点实验室,陕西延安716000 [2]宁夏百川新材料有限公司,宁夏银川750409 [3]陕西精益化工有限公司,陕西榆林719000

出　　处：《精细化工》2022年第2期255-260,共6页Fine Chemicals

基　　金：延安大学校级青年项目(YDQ2020-18);国家大学生创新创业训练计划项目(202110719041);国家大学生创新创业训练计划项目(S202010719011)。

摘　　要：以十六烷基三甲氧基硅烷(HDTMOS)的水解液对微米硅藻土和纳米Al_(2)O_(3)进行改性;然后,以环氧树脂E51(E51)为粘接剂制得了悬浮液;最后,采用喷涂法将上述悬浮液喷涂于基底表面,经加热固化后制得硅藻土/Al_(2)O_(3)基复合超疏水涂层。通过单因素实验筛选出最佳制备工艺[V(HDTMOS)∶V(乙醇)=0.04∶1;m(硅藻土)∶m(Al_(2)O_(3))=1.5∶0.8;m(E51)∶m(丙酮)=1.0∶5]。在此条件下制得的超疏水涂层表面静态水接触角高达163.4°。SEM结果显示,复合超疏水涂层表面呈粗糙度均匀的微观分级结构。该涂层适用于滤纸、木块、不锈钢板等多种基底,均表现出优异的超疏水性能。同时,该涂层经过100次的循环磨损实验后,其表面水静态接触角仍高达146.3°。Micron diatomite and nano Al_(2)O_(3) were modified with hydrolyzate of hexadecyltrimethoxysilane(HDTMOS).Then,the suspension was prepared with epoxy resin E51 as adhesive and was sprayed on the surface of substrate by spraying method.Finally,the diatomite/Al_(2)O_(3) composite superhydrophobic coating was obtained after heating and curing.The optimum preparation process for superhydrophobic coating was obtained as follows:V(HDTMOS)∶V(ethanol)=0.04∶1,m(diatomite)∶m(Al_(2)O_(3))=1.5∶0.8 and m(epoxy resin E51)∶m(acetone)=1.0∶5.Under the above-mentioned conditions,the static water contact angle of the superhydrophobic surface was as high as 163.4°.SEM results showed that the surface of composite superhydrophobic coating had uniform microstructure.The coating exhibited excellent superhydrophobic properties for the substrate such as filter paper,wood block,stainless steel plate.Meanwhile,the surface static water contact angle of the coating was still up to 146.3°after 100 cycles of wear experiments.

关 键 词：超疏水性 硅藻土 氧化铝 环氧树脂 十六烷基三甲氧基硅烷 功能材料 

分 类 号：TB34[一般工业技术—材料科学与工程]