乳化剂对聚硅氧烷乳液稳定性的影响  

Effect of Emulsifiers on the Stabilities of Polysiloxane Emulsion

作　　者：李薇雅[1] 金阳[2] 

机构地区：[1]浙江工程学院理学院应用化学系,浙江杭州310033 [2]绍兴文理学院,浙江绍兴312000

出　　处：《功能高分子学报》2004年第2期190-192,199,共4页Journal of Functional Polymers

摘　　要：研究了乳化剂烷基酚聚氧乙烯醚(OP)、烷基聚氧乙烯醚和烷基季铵盐对聚硅氧烷乳液聚合的影响。采用复合乳化剂可以提高乳液稳定性。结果表明:①在以D4、N-β-氨乙基-γ-氨丙基甲基二甲氧基硅烷为原料的乳液聚合中,当非离子型乳化剂烷基聚氧乙烯醚和离子型乳化剂烷基季铵盐复合使用时,二者性能互补,产生协同效应,可使聚合物乳液具有很大的稳定性。②在实验选定的乳化剂中,非离子型烷基聚氧乙烯醚乳化剂用量为80mL(含量为0.05g/mL)、离子型烷基季铵盐乳化剂为60mL(浓度为0.05g/mL)时,其乳液的电解质稳定性、pH稳定性、冻融高温稳定性和离心稳定性等较好。The effect of polyoxyethylated alkylpbenol (emulsifier OP), alkyl polyoxyethylene ether and alkyl quatermary ammonium salt on the stabilities of polysiloxane emulsion was investigated. The resucets show that: ①in the emulsion polymerization of octamethycycloterasiloxane(D_4) and NK-β-amino ethyl-γ-aminopropylmethyl dimethoxy si]ane, the cooperation effects can be produced by using of the composite emulsifier of ionic emulsifier alkyl polyoxyethyene ether/non-ionic emulsifier alkyl quaternary ammonium salt, and stabilities of the emulsion can be largely enhanced. ②the concentration of alkyl polyoxyethyene ether and alkyl quatemary ammonium salt being at 80 mL (0.05 g/mL) and 60mL (0.05 g/mL) respectively, the high stabilities of electrolyte, pH, freese-thaw, high temperature and centrifugalizing can be obtained.

关 键 词：聚硅氧烷 乳液聚合 稳定性 乳化剂 烷基酚聚氧乙烯醚 烷基聚氧乙烯醚 烷基季铵盐 

分 类 号：O634.41[理学—高分子化学]