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在十八烷基三甲基氯化铵(1831)和含氟乳化剂N,N-二甲基-N’-(2-三氟甲基-1-五氟乙基)(FS)的复合乳化作用下,以全氟烷基丙烯酸酯(FM)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、甲基丙烯酸二甲基胺基乙酯(DM)为反应单体,以过硫酸钾(KPS)为引发剂,制备了全氟烷基聚丙烯酸酯乳液(FPE)。通过红外光谱(IR)、热失重分析(TG)对聚合物的结构和热稳定性进行了表征,并用接触角、原子力显微镜(AFM)分析了乳液的防水性能,表明FM成功地接枝到了聚合物上,随着含氟量的增加,分解温度达351.5℃;在含氟量达到w(FM)=12%时,水接触角达127°;采用Z粒度仪以及透射电镜(TEM)对共聚物外观形貌进行了表征,结果表明,乳胶粒的形态呈球形,呈单分散,平均乳液粒径为220 nm。
In the composite of octadecyltrimethylammonium chloride (1831) and a fluorinated emulsifier N, N-dimethyl-N ’- (2-trifluoromethyl-1-pentafluoroethyl) Under the action of emulsification, perfluoroalkyl acrylate (FM), butyl acrylate (BA), methyl methacrylate (MMA) and dimethylaminoethyl methacrylate (DM) Perfluoroalkyl polyacrylate emulsion (FPE) was prepared using potassium persulfate (KPS) as initiator. The structure and thermal stability of the polymer were characterized by infrared spectroscopy (IR) and thermogravimetric analysis (TG). The water-repellency of the emulsion was analyzed by contact angle and atomic force microscopy (AFM), indicating that the FM was successfully grafted to the polymerization With the increase of fluorine content, the decomposition temperature reached 351.5 ℃. The contact angle of water reached 127 ° when the content of fluorine reached 12% w (FM). Using Z Particle Sizer and transmission electron microscopy (TEM) The appearance of the particles was characterized. The results showed that the morphology of the particles was spherical and monodispersed, the average emulsion particle size was 220 nm.