含氟单体改性丙烯酸树脂的合成及性能研究  

The Synthesis and Performance of Fluorine Monomer-modified Acrylic Resin

作　　者：孙中新 孙立岩 李继航 Sun Zhongxin;Sun Liyan;Li Jihang(Guangdong Banfert New Materials Co.,Ltd.,Shaoguan 511100,China;Sika(China)Co.,Ltd.,Suzhou 215121,China)

机构地区：[1]广东邦弗特新材料有限公司,广东韶关511100 [2]西卡(中国)有限公司,江苏苏州215121

出　　处：《山东化工》2024年第11期28-32,共5页Shandong Chemical Industry

摘　　要：用不同的有机氟单体对丙烯酸树脂进行了改性,通过对聚合工艺、改性单体种类及用量等因素的考察,选择全氟乙基辛基丙烯酸酯为改性单体,合成了具有高接触角、低表面能的有机氟改性丙烯酸树脂;对树脂进行了红外光谱、相对分子质量及其分布和玻璃化转变温度测定,证明含氟单体参与了丙烯酸酯类单体的共聚合反应。研究了含氟丙烯酸酯共聚物涂料表面性能的影响因素,结果表明,含有17个氟原子的全氟乙基辛基丙烯酸酯对丙烯酸树脂改性效果显著,当全氟乙基辛基丙烯酸酯用量占单体总量的6%~8%时,漆膜的表面张力、疏水性(水接触角和吸水率)、耐候性等都有显著改善,水接触角可以达到105°左右。The modification of acrylic resin was carried out using various organic fluorine monomers.Through investigation of such as polymerization process,types,and amounts of modifying monomers,perfluoroethyl hexyl acrylate was selected as the modifying monomer to synthesize organofluorine-modified acrylic resin with high contact angle and low surface energy.The infrared spectroscopy,molecular weight distribution,and glass transition temperature measurements that confirming the involvement of fluorinated monomers in the copolymerization with acrylic monomers.The influence of factors on the surface properties of fluorinated acrylic ester copolymer coatings was studied.The results indicate that perfluoroethyl hexyl acrylate with 17 fluorine atoms significantly improves the modification effect on acrylic resin.When the amount of perfluoroethyl hexyl acrylate accounts for 6%~8% of the total monomers,the surface tension,hydrophobicity(water contact angle and water absorption),and weather resistance of the coating film are significantly improved,and the water contact angle can reach approximately 105°.

关 键 词：全氟乙基辛基丙烯酸酯 氟改性丙烯酸树脂 表面张力 接触角 

分 类 号：TQ325.7[化学工程—合成树脂塑料工业]