Properties of Polyacrylate Latex Prepared Under Different Emulsified Systems  

作　　者：CHEN Lijun WU Fengqin 陈立军;WU Fengqin(School of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310032,China;Intertek Testing Services,Hangzhou 310052,China)

机构地区：[1]School of Chemical Engineering and Materials Science,Zhejiang University of Technology,Hangzhou 310032,China [2]Intertek Testing Services,Hangzhou 310052,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第1期134-137,共4页武汉理工大学学报（材料科学英文版）

基　　金：Zhejiang Provincial Natural Science Foundation of China(No.Y4100152)

摘　　要：The polyacrylate latexes were synthesized via pre-emulsified and semi-continuous seeded emulsion polymerization technology when conventional surfactant or polymerizable surfactant was used as emulsifiers. The resultant latexes and their films were characterized with the contact angle determinator and rheometer. Effect of the polymerizable surfactant on water resistance, stability and rheology of the latex was studied. Results show that the water resistance of film is increased first then decreased with the increase of the amount of the polymerizable surfactant. There exists the optimum value of the amount of the polymerizable surfactant for the water resistance of the film. In comparison with the latex prepared with the conventional surfactant, both the mechanical stability and the freezing-thaw stability of the latex are improved when the polymerizable surfactant is used during the course of the emulsion polymerization. The resultant latex has rheological properties of pseudo-plastic fluid and belongs to non-Newtonian fluid.The polyacrylate latexes were synthesized via pre-emulsified and semi-continuous seeded emulsion polymerization technology when conventional surfactant or polymerizable surfactant was used as emulsifiers. The resultant latexes and their films were characterized with the contact angle determinator and rheometer. Effect of the polymerizable surfactant on water resistance, stability and rheology of the latex was studied. Results show that the water resistance of film is increased first then decreased with the increase of the amount of the polymerizable surfactant. There exists the optimum value of the amount of the polymerizable surfactant for the water resistance of the film. In comparison with the latex prepared with the conventional surfactant, both the mechanical stability and the freezing-thaw stability of the latex are improved when the polymerizable surfactant is used during the course of the emulsion polymerization. The resultant latex has rheological properties of pseudo-plastic fluid and belongs to non-Newtonian fluid.

关 键 词：polymerizable emulsifier HPMAS polyacrylate latex BINDER PROPERTIES 

分 类 号：O648.23[理学—物理化学]