中文摘要：

以甲基丙烯酸甲酯（MMA）、丙烯酸丁酯（BA）、甲基丙烯酸六氟丁酯（HFMA）等为主要单体,烯丙氧基壬基酚聚氧乙烯醚硫酸铵（DNS-86）为可聚合乳化剂,采用预乳化种子乳液聚合法合成了具有核壳结构的含氟聚丙烯酸酯无皂乳液.考察了DNS-86和HFMA用量对乳液耐电解质稳定性及涂膜耐水性的影响,利用傅立叶红外光谱、透射电镜、差示扫描量热法、接触角及热重分析等方法对乳液及其涂膜进行了表征.结果表明：当DNS-86和HFMA用量分别为2.2%和8%（质量分数）时,与常规复合乳化剂（OP-10/SDS）相比,采用可聚合乳化剂DNS-86制备的乳液的耐电解质稳定性提高,涂膜的耐水性增强;HFMA有效地参与了乳液共聚;乳胶粒子具有明显的核壳结构,核层和壳层共聚物的玻璃化温度分别为261.11K和300.48K;HFMA用量为8%时,涂膜？空气界面的水接触角达94.1,°乳液涂膜的分解温度较纯丙乳液提高48K,涂膜的疏水性和耐热性显著提高.

英文摘要：

Fluorinated emulsifier-free polyacrylate emulsion with a core-shell structure was synthesized via the pre-emulsified seed emulsion polymerization,with methyl methacrylate（MMA）,butyl acrylate（BA） and hexafluorobutyl methacrylate（HFMA） as the main monomers,and with ammonium allyloxtmethylate nonylphenol ethoxylates sulfate（DNS-86） as the polymerizable emulsifier.Then,the influences of the dosages of DNS-86 and HFMA on the electrolyte stability of the emulsifier-free emulsion and on the water resistance of the film were discussed. Moreover, the emulsion and the film were characterized by means of FT-IR, TEM, DSC, contact angle method and TG. The results show that, as compared with the traditional complex emulsifier OP-10/SDS, polymerizable emulsifier DNS-86 may result in stronger electrolyte stability and water resistance in the polymerization with 2.2% DNS-86 and 8% HFMA, that HFMA effectively participates the emulsion copolymerization, that there exists a clear coreshell structure in emulsion particles, that the emulsifier-free emulsion film is of two glass transition temperatures, namely 261.11 and 300.48 K, which respectively correspond to the core-phase and the shell-phase copolymers, and that, at a HFMA dosage of 8%, the water contact angle of the film-air interface reaches 94.1 ° and the decomposition temperature of the emulsifier-free emulsion film is 48 K higher than that of the traditional polyacrylate emulsion film, showing a greatly-improved hydrophobie property and thermal stability of the film.