改性环氧丙烯酸树脂/SiO_(2)超疏水涂层的制备  

Preparation of modified epoxy acrylic resin/SiO_(2) superhydrophobic coating

作　　者：段沙沙 刘华 吕学超 钱建华 刘坐镇[1,2] DUAN Sha-sha;LIU Hua;LYU Xue-chao;QIAN Jian-hua;LIU Zuo-zhen(Key Laboratory of Special Functional Polymer Materials and Related Technology,Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Engineering,Research Center Anticorrosion Materials,Sino Polymer Co.,Ltd.,East China University of Science and Technology,Shanghai 200241,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 [2]华东理工大学华昌聚合物有限公司,上海防腐蚀新材料工程技术研究中心,上海200241

出　　处：《广西大学学报（自然科学版）》2021年第2期462-471,共10页Journal of Guangxi University（Natural Science Edition）

基　　金：上海市科学技术委员会科研计划项目(16DZ1121403,17511102803)。

摘　　要：为了制备一种超疏水涂层,先用六亚甲基二异氰酸酯(HDI)与羟基硅油(PDMS)反应合成了中间体H-PDMS,再让H-PDMS和环氧丙烯酸树酯(EA)反应,得到PDMS改性的环氧丙烯酸树脂(PEA),之后与疏水型nmSiO_(2)共混涂膜,UV固化可制备出一种超疏水涂层。采用红外光谱、接触角测量仪、场发射扫描电子显微镜、百格测试仪等表征了接枝材料的化学结构,涂层的疏水性、附着力等。结果表明:硅烷链段成功地接枝到EA的侧链上,当H-PDMS添加量为80wt%,nm SiO_(2)添加量为30wt%时,制备的涂层表面具有明显的微纳二级粗糙结构,接触角可达155°,滚动角小于3°,且在铝片上具有优异的附着力和自清洁性能。Super-hydrophobic coatings are getting more and more attention from researchers because of their application in anti-icing,anti-corrosion,anti-static,oil-water separation,self-cleaning,etc.A novel modified epoxy acrylic resin(PEA)was synthesized from polydimethylsiloxane(PDMS),hexamethylene diisocyanate(HDI)and epoxy acrylic resin(EA),and then blended with nmSiO_(2) to prepare superhydrophobic coating by UV curing.The chemical structure,hydrophobicity and adhesion of the grafted material were characterized by infrared spectroscopy,contact angle measuring instrument,field emission scanning electron microscope and 100-cell measuring instrument.The results show that the silane segments are successfully grafted onto the EA backbone,HDI plays the role of a spacer group in the side chain between the EA backbone and PDMS.When H-PDMS is 80wt%of the epoxy acrylic resin and the solid content of nmSiO_(2) was 30wt%,the surface of the prepared coating has obvious micro-nano roughness structure,water contact angle is about 155°,slide angle is less than 3°.It also has excellent adhesion and self-cleaning properties on aluminum sheets substrates.

关 键 词：环氧丙烯酸树脂 羟基硅油 nmSiO_(2) 超疏水 

分 类 号：TQ630[化学工程—精细化工]