核／壳型聚硅氧烷丙烯酸酯复合乳液的制备

Preparation of Polysiloxane-Acrylic Composite Latexes having Core-Shell Structure

采用种子乳液聚合的方法制备了具有核／壳结构的聚硅氧烷丙烯酸酯复合乳液，考察了乳化剂、单体的加入方式及配比对产生乳液粒子的影响。结果表明，乳化剂在核阶段和壳阶段的单体聚合中都起着很重要的作用，当乳化剂分子在乳液粒子上的覆盖率低于４０％时，可制得较理想的核／壳型复合乳液．

Polysiloxane-acrylic composite latexes having core-shell structure were preparedstepwisely by seeded emulsion polymerization。 The effects of emulgent’s coverage extent onlatex particle surface,addition method of emulgent and ratio of mononiers on the formationof latex particles were investigated. The results showed that the emulgent amotint on theparticle surface of polysiloxane emulsions played an important role on the formation of the la-tex particles having core-shell structure。When the emulgent coverage on the surface ofpolysiloxane particles vvas less 40%,the polysiloxane-acrylic latexes where most particlespossess core-shell structure may be produced.