新型含刚性环己烷结构的氟代丙烯酸酯的制备及其性能研究  

Study on preparation and properties of novel fluoroacrylate containing rigid cyclohexane structure

作　　者：许伟 刘浩[1,2] 张博文 海芳[1,2] 郝丽芬 王学川[1,2] XU Wei;LIU Hao;ZHANG Bo-wen;HAI Fang;HAO Li-fen;WANG Xue-chuan(National Demonstration Center for Experimental Light Chemistry Engineering Education,Shaanxi University of Science&Technology,Xi′an 710021,China;Institute of Biomass and Functional Materials,Shaanxi University of Science&Technology,Xi′an 710021,China;College of Chemistry and Chemical Engineering,Shaanxi University of Science&Technology,Xi′an 710021,China)

机构地区：[1]陕西科技大学轻化工程国家级实验教学示范中心,陕西西安710021 [2]陕西科技大学生物质与功能材料研究所,陕西西安710021 [3]陕西科技大学化学与化工学院,陕西西安710021

出　　处：《陕西科技大学学报》2023年第6期68-74,共7页Journal of Shaanxi University of Science & Technology

基　　金：陕西省科技厅重点研发计划项目(2020GY-239)。

摘　　要：含氟液晶聚合物具有极好的疏水稳定性,因而在稳定疏水涂层领域的研究中备受关注.故为提高含氟聚合物的疏水稳定性,本文以异佛尔酮二异氰酸酯(IPDI)、甲基丙烯酸羟乙酯(HEMA)和全氟已基乙醇(S104)为原料简便地合成了一种新型含刚性环己烷结构的氟代丙烯酸酯(FAM).以甲基丙烯酸十二氟庚酯(DFMA)为参照物,利用傅里叶变换红外光谱仪、核磁共振波谱仪、X射线衍射仪、偏光显微镜、差示扫描量热仪、热重分析仪、静/动态水接触角测量仪对单体及其均聚物的结构、液晶行为、热性能和疏水性能进行研究.结果表明,所合成产物为含有环己烷刚性结构的氟代丙烯酸酯;其单体和均聚物具有热致液晶性;由于刚性结构的引入,其均聚物的热稳定性增加.刚性结构的存在还有利于均聚物侧基末端氟碳链的密集分布和阻止均聚物在与极性液体接触时所发生的表面基团重构,因而其疏水性和疏水稳定性更好.Fluorine-containing liquid crystal polymers have excellent hydrophobic stability,so they have attracted much attention in the field of stable hydrophobic coatings.Thus,a novel fluoroacrylate(FAM)containing rigid cyclohexane structure was simply synthesized to improve the hydrophobic stability of fluoropolymers using isophorone diisocyanate(IPDI),hydroxyethyl methacrylate(HEMA)and perfluorohexylethanol(S104)as raw materials.The structure,liquid crystal behavior,thermal properties,and hydrophobic properties of monomers and homopolymers were studied by Fourier transform infrared spectrometer,nuclear magnetic resonance spectrometer,X-ray diffractometer,polarizing microscope,differential scanning calorimeter,thermogravimetric analyzer,and static/dynamic water contact angle measuring instrument and dodecafluoroheptyl methacrylate(DFMA)used as a reference substance.The results showed that the synthesized product was a fluoroacrylate containing a rigid cyclohexane structure.The monomer and homopolymer are thermotropic liquid crystals,which facilitate the dense distribution of fluorocarbon chains at the end of the homopolymer side groups and prevent surface group reconfiguration when the homopolymer comes into contact with polar liquids,resulting in better thermal stability,hydrophobicity and hydrophobic stability.

关 键 词：氟代丙烯酸酯 刚性侧链型液晶 向列相 表面自由能 疏水稳定性 

分 类 号：TB34[一般工业技术—材料科学与工程]