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以含氟PU(聚氨酯)为壳、低Tg(玻璃化转变温度)的苯丙(SA)共聚物为核,采用乳液聚合法成功制备出FPUA(PU-SA-含氟丙烯酸酯三元共聚物)乳液;然后以此为基体,制备了水性外墙弹性涂料。采用透射电镜(TEM)、动态光散射(DLS)法、红外光谱(FT-IR)法和差示扫描量热(DSC)法等分别测定了FPUA乳液的微观形貌、粒径及其分布、结构、Tg和水接触角。研究结果表明:FPUA乳胶粒呈规则球形状核/壳结构,FPUA乳胶膜的水接触角高达100.1°,由其制成的水性外墙弹性涂料解决了低Tg乳胶膜的“热黏冷脆”等问题。
In this paper, we successfully prepared FPUA (PU-SA-fluorinated acrylate terpolymer) by emulsion polymerization with a core of a fluorinated PU (polyurethane) shell and a low Tg glass transition temperature ) Emulsion; and then as a matrix, prepared a water-based exterior wall paint. The microstructure, particle size and distribution of FPUA emulsion were measured by TEM, DLS, FT-IR and DSC. Structure, Tg and water contact angle. The results show that the FPUA latex particles have a regular spherical core / shell structure, and the water contact angle of the FPUA latex film is as high as 100.1 °. The water-based exterior wall elastic paint made from the FPUA latex film solves the problem that the low- "And other issues.