防污性紫外光固化树脂的光聚合合成与性能  

Photopolymerization synthesis and properties of antifouling UV⁃curable resins

作　　者：汪雪 谢晖 黄莉 朱小龙 赵金国 曾其昕 WANG Xue;XIE Hui;HUANG Li;ZHU Xiaolong;ZHAO Jinguo;ZENG Qixin(College of Chemical Engineering,Nanjing Tech University,Nanjing 211800,China)

机构地区：[1]南京工业大学化工学院,江苏南京211800

出　　处：《南京工业大学学报（自然科学版）》2024年第5期521-530,共10页Journal of Nanjing Tech University(Natural Science Edition)

摘　　要：为解决丙烯酸树脂防污性能差以及合成时消耗能量高的问题,以甲基丙烯酸甲酯(MMA)、丙烯酸异丁酯(BA)、丙烯酸(AA)、丙烯酸十三氟正辛酯(PFOA)和丙烯酸异冰片酯(IBOA)为合成单体,2,4,6-三甲基苯甲酰基-二苯基氧化膦(TPO)为光引发剂,采用光聚合法合成含氟丙烯酸聚合物。再在聚合物中加入硅烷偶联剂(KH570)和光引发剂(TPO)混合后,在紫外光灯照射下固化成膜,得到具有良好防污性的氟硅改性丙烯酸树脂涂膜。利用傅里叶红外光谱(FT-IR)对产物进行结构表征。探究(甲基)丙烯酸类单体选择及质量比,确定各单体m(BA)∶m(IBOA)∶m(AA)∶m(MMA)为42∶28∶20∶10。对聚合反应进行黏度分析,确定光聚合时间在100 s时,黏度最佳。通过X线光电子能谱(XPS)、接触角、表面自由能、综合防污性能及热重分析,确定丙烯酸十三氟辛酯(PFOA)质量分数为20%,硅烷偶联剂(KH570)质量分数为10%。此时氟硅富集在涂膜表面的数量多且有较高接触角(104.4°),防污效果好并具有良好的热稳定性。To address the issues of poor antifouling performance and high energy consumption during synthesis of acrylic resin,fluoroacrylic acid polymers were synthesized via photopolymerization using methyl methacrylate(MMA),isobutyl acrylate(BA),acrylic acid(AA),tridecafluoro-n-octyl acrylate(PFOA)and isobornyl acrylate(IBOA)as synthetic monomers,with 2,4,6-trimethylbenzoyl-diphenylphosphine oxide(TPO)as the photoinitiator.The polymer was then mixed with a silane coupling agent(KH570)and the photoinitiator(TPO),and cured under ultraviolet light to form a fluorosilicon-modified acrylic resin coating film with excellent antifouling properties.Fourier transform infrared(FT-IR)spectroscopy was used to characterize the structure of the product.The selection and mass ratios of(methacrylic acid monomers)were explored,resulting in the mass ratio of each monomer being m(BA)∶m(IBOA)∶m(AA)∶m(MMA)=42∶28∶20∶10.Viscosity analysis of the polymerization reaction indicated that the optimal viscosity was achieved with a photopolymerization time of 100 s.X-ray photoelectron spectroscopy(XPS),contact angle,surface free energy,comprehensive antifouling performance and thermogravimetric analysis determined that the mass fractions of PFOA and KH570 were 20%and 10%,respectively.At these concentrations,the fluorosilicon was highly enriched on the surface of the coating film,with a high contact angle of 104.4°,which contributed to good antifouling effects and excellent thermal stability.

关 键 词：光聚合 UV固化 氟硅改性丙烯酸树脂 防污性 

分 类 号：TQ630.7[化学工程—精细化工]