阳离子型含氟丙烯酸酯的制备及防水防油性能

Synthesis and Surface Propertes of Latex Film of a Cationic Fluoride-Bearing Polyacrylate Emulsion

以甲基丙烯酸十二氟庚酯(FM)、丙烯酸丁酯(BA)、苯乙烯(St)、甲基丙烯酰氧乙基三甲基氯化铵(DMC)、丙烯酸十八酯(ODA)为原料,采用无皂乳液聚合制得了阳离子含氟丙烯酸酯多元共聚物乳液。对聚合物的结构、组成进行了表征研究,研究了共聚乳液膜表面的性质。结果表明,随着共聚物中全氟单体含量的增加,共聚物膜的表面能显著降低,当全氟单体的含量达到25%(质量分数)时,其表面能降低到19.99 mJ/m;并通过热处理表明了含氟单体随温度、时间增大更容易向表面富集的现象,当达到60min,120℃时水和油接触角分别达到了110°和83°。

This paper related to the synthesis and properties of self-emulsifying cationic fluoroacrylate copolymer emulsion which is prepared with styrene（St）, Methacrylatoethyl trimethyl ammonium chloride （DMC）, butyl acrylate （BA）, Octadecyl acrylate（ODA） and 1H, 1H, 7H- Dodecafluoroheptyl methacrylate （FM） by soap-emulsion eopolymerization. The copolymer was characterized by using DSC, FT-IR and TEM techniques; Surface properties of the copolymer film were measured by contact angle measurements（JZHY-180）. The results show that the surface free energies of cogpolymer films decrease drastically with increasing the concentration of FM, and can reach 19.99 mJ/m^2 when the concentration of FM used in copolyrnerization increases to 25%; Through annealing treatment, our investigation verified that containing fluorine more tends to enrich at the copolymer-air interface easier with increasing the time and temperature, and the water and oil＇s cantact angle reaches 110°and 83° respectively while surroundings at 60 min, 120 ℃.