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涂料工业  2012 

聚(α-甲基苯乙烯/甲基丙烯酸丁酯)无皂乳液的合成与性能

Keywords: 无皂乳液,α-甲基苯乙烯,甲基丙烯酸丁酯,合成,性能

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Abstract:

?以聚(甲基丙烯酸丁酯/丙烯酸钠)[p(bma/aana)]低聚物为乳化剂,合成了无皂聚(α-甲基苯乙烯/甲基丙烯酸丁酯)p(ams/bma)乳液,考察了p(bma/aana)用量、ams和bma配比对无皂乳液电解质稳定性、冻融稳定性和高温稳定性以及成膜耐水性的影响。当p(bma/aana)37%(质量分数,下同),ams和bma总量185%,m(ams)∶m(bma)=10∶15,(nh4)2s2o803%,反应温度70~75℃,反应时间3h时,合成乳液冻融指数为5,60℃下保温120h无变化,涂膜剥落或起皱的时间为67h,w[p(ams/bma)]=01%的乳液加入c(kcl)=0~25mol/l的氯化钾水溶液中,透光度为41%~42%,表明乳液具有较好的性能。

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