聚醋酸乙烯乳液的抗冻融稳定性  

Study of freeze-thaw resistance of polyvinyl acetate emulsion

作　　者：聂芊[1] 孟凡钧 

机构地区：[1]哈尔滨商业大学化学中心,黑龙江哈尔滨150076 [2]哈尔滨天顺化工科技有限公司,黑龙江哈尔滨150086

出　　处：《粘接》2005年第2期13-14,共2页Adhesion

摘　　要：以聚乙烯醇缩甲醛为保护胶体,制备了抗冻融稳定性的聚醋酸乙烯乳液,研究了甲醛、乳化剂、反应温度、反应时间、pH值等对乳液冻融前后稳定性的影响.结果表明,当甲醛用量为m(HCHO)/m(PVA)为0.4、乳化剂质量分数为4.0%、反应温度70～75 ℃、反应时间120 min、pH值为3.0时乳液冻融稳定性较好.Polyvinyl acetate emulsion having freeze-thaw resistance was prepared with PVAF as protective colloid. Effects of amounts of formaldehyde and emulsifier, temperature, reaction time and pH value on stability of emulsion at freeze-thaw condition were studied. Experimental results showed that m(HCHO)/m(PVA)=0.4,emulsifier amount was 4.0%, reaction temperature and time were 70~75℃and 120min and pH=3.0,stability of the emulsion was better.

关 键 词：聚醋酸乙烯乳液 冻融 稳定性 

分 类 号：TQ433.433[化学工程]