UV吸收型氟硅化丙烯酸树脂的制备及性能  

Preparation and Property Study of UV-absorbing Fluorine-silicon Acrylic Resin

作　　者：何德良[1] 雷辉斌 李萍 屈伟 许生荣 崔浩 HE Deliang;LEI Huibin;LI Ping;QU Wei;XU Shengrong;CUI Hao(College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,China;College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China)

机构地区：[1]湖南大学化学化工学院,湖南长沙410082 [2]吉首大学化学化工学院,湖南吉首416000

出　　处：《湖南大学学报（自然科学版）》2019年第6期62-67,共6页Journal of Hunan University:Natural Sciences

基　　金：国家电网公司总部科技项目(KG12K16004)~~

摘　　要：以乙烯基三甲氧基硅烷(VTMS)、甲基丙烯酸六氟丁酯(HFMA)、2-丙烯酸2-(4-苯甲酰-3-羟苯氧基)乙基酯(BHEA)为功能单体,采用溶液共聚法合成了紫外吸收型氟硅化丙烯酸树脂.采用红外吸收光谱(FT-IR)和紫外吸收光谱(UV)研究了树脂的分子结构和紫外光吸收性能;通过热重分析法(TGA)、水接触角(CA)和氙灯加速老化试验对由树脂制备的涂膜的耐热性、疏水性和耐老化性能进行了表征.结果表明,该树脂分子结构中含有氟、硅及紫外光吸收基团,且具有良好的紫外光吸收性能;由该树脂制备的涂膜耐热性较好,水接触角达到92°,表现出明显的疏水性能.同时,由于紫外吸收基团和有机氟、硅的协同保护作用,树脂耐候性明显提高.经过1 000 h加速老化试验,涂膜色差为3.12,保光率高达80.4%.A kind of UV-absorbing fluorine-silicon acrylic resin was prepared by solution copolymerization with vinyltrimethoxysilane(VTMS),hexafluorobutyl methacrylate(HFMA)and 2-(4-Benzoyl-3-hydroxyphenoxy)ethyl acrylate(BHEA)as modifying monomers.The acrylic polymers were characterized by Fourier transform infrared spectrum(FT-IR),Ultraviolet(UV)absorption spectrum;and the coatings thereof were studied by thermogravimetric analysis(TGA),water contact angle(CA)and Xenon lamp artificial accelerated aging tests.The results showed that the resins contained modifying groups and exhibited high UV absorbing performance,and the coatings showed good heat-resistance and hydrophobicity with the water CA of 92°.Meanwhile,the weather-resistance was promoted under the enduring protection of the modifying monomers.After 1 000 h aging test,the color difference and gloss retention of coatings were 3.12 and 80.4%,respectively.

关 键 词：丙烯酸树脂 氟硅改性 紫外吸收 耐热性 疏水性 耐老化性 

分 类 号：TQ630.1[化学工程—精细化工]