P(FA-co-MMA-co-St)共混改性环氧涂料的制备与疏水性能

Preparation and Hydrophotic Property of Copolymers P(FA-Co-MMA-co-St) Modified Epoxy Coatings

采用简单的共混法,直接将聚全氟烷基乙基丙烯酸酯-co-甲基丙烯酸甲酯-co-苯乙烯无规共聚物P(FA-co-MMA-co-St)添加到市售的环氧涂料中,制备出具有超疏水性的环氧涂层。结果表明,当共聚物用量为环氧色漆组分的4%,氟单体投料量为30%,固化剂为乙二醇双偏苯三酸酐(TMEG)、固化温度120℃,固化时间2h条件下,改性环氧涂层对水的接触角可达152°,比纯的环氧涂层提高了88°。电子扫描显微镜观察发现,在环氧涂层表面构建出了具有微米级的粗糙结构。

The superhydrophobic epoxy coatings were prepared by adding the random copolymers poly-（fluoroalkyl ethyl acrylate-co-methly methacrylate-co-styrene） P（FA-co-MMA-co-St） to the commercially available epoxy paints using a simple blending method.The results indicated that when the copolymers are 4% of the epoxy components,perfluoroalkyl ethyl acrylate（FA） accounts for 30% of the comonomers,curing temperature is 120 ℃/2h,the water contact angle（WCA） of epoxy coatings is 152°,higher than 88° of unmodified epoxy coatings.Through scanning electron microscope（SEM）,the microstructure was observed on the epoxy coatings. The low surface energy FA segments and the microstructure together renderes the modified epoxy coatings with superhydrophobic properties.The factors were studied as well.