耐沾污聚氨酯-苯丙-含氟丙烯酸酯共聚乳液的制备  

Preparation of polyurethane-styrene-acrylate-fluorinated acrylate copolymer emulsion with stain resistance

作　　者：陆婷[1] 邹玲玲[1] 朱爱萍[1] 

机构地区：[1]扬州大学化学化工学院,江苏扬州225002

出　　处：《中国胶粘剂》2014年第9期13-16,40,共5页China Adhesives

基　　金：高校科研成果产业化推进工程项目(JH10-42)

摘　　要：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。With fluorinated PU （polyurethane） as shell, SA （styrene- acrylate） copolymer with lower Tg （glass transition temperature） as core, a FPUA （PU-SA-fluorinated acrylate ternary copolymer） emulsion was successfully prepared by emulsion polymerization. Then, a waterborne elastic coating for exterior wall was prepared with FPUA as matrix. The microstructure, particle size and its distribution, structure, Tg and water contact angle of FPUA emulsion were respectively measured by some methods such as transmission electron microscope （TEM） , dynamic light scattering （DLS）, infrared spectroscopy （FT-IR） and differential scanning calorimetry （DSC） methods. The research results showed that the FPUA latex particle had a core/shell structure with inerratie sphere, the water contact angle of FPUA latex film was 100.1° , the waterborne elastic coating for exterior wall made from FPUA emulsion, which could solve the “sticky at hot and crisp at cold” problem of latex film with lower Tg.

关 键 词：水性聚氨酯 含氟单体 苯丙乳液 水性外墙弹性涂料 耐沾污性 

分 类 号：TQ331.499[化学工程—橡胶工业]