含氟丙烯酸酯树脂的合成及固化膜性能研究

Synthesis of fluorinated acrylate and coating properties

采用溶液聚合法合成了含氟丙烯酸酯共聚物。结果表明,采用同时滴加法将含氟单体加入聚合体系时,合成的含氟丙烯酸酯共聚物稳定、透明。随着含氟单体用量的提高,所合成的共聚物在不锈钢底材表面涂层的附着力先是基本不变,而后降低;水滴在涂层表面的接触角则先提高,而后基本不变。综合聚合物稳定性、涂层附着力、疏水性各方面因素,氟单体用量应在15%~20%范围为宜。采用红外光谱表征了合成聚合物的结构,并且用DSC法验证了所合成的产物为均一的共聚物,玻璃化转变温度为83.5℃,具有一定的耐热性。水滴在该共聚物涂层表面的接触角为116.8°,且涂层具有良好的耐水性和耐汽油性;铅笔硬度达到2H;在不锈钢底材表面的附着力为11.55MPa,是一种性能良好的疏水涂层。

The polymer technology and performance of fluorine-containing acrylate copolymer were studied.The results showed that the fluorinated acrylate copolymer was stable and transparent when the fluorinated monomers was dropped with the other monomers at the same time.With the increased amount of the fluorinated monomers,the adhesion of copolymer coating on stainless steel was unchanged at first and then reduced;the contact angle was on the increase and then remained basically unchangeness.According to polymer stability,coating adhesion,hydrophobicity,fluorinated monomer dosage between 15%~20% was appropriate.the structure of synthetic polymers was characterized by Infrared spectroscopy,and the homogeneous copolymer was verified by the DSC method.Glass transition temperature of polymer was 83.5℃,with a certain degree of heat resistance.The contact angle of polymer coating was 116.8°,and the coating has excellent resistance of water and gasoline;pencil hardness reached 2H;and surface adhesion was 11.55MPa.