端羟基型超支化聚羧酸减水剂的合成工艺及性能研究  

Study on the hyperbmnched hydroxyl terminated polyoarboxylate superplastlclzer synthetic process and performance

作　　者：智艳飞[1] 宋涛文[1] 汪伟[1] 吴峰[1] 王栋民[1] 王启宝[1] 

机构地区：[1]中国矿业大学北京化学与环境工程学院,北京100083

出　　处：《中国包装科技博览（混凝土技术）》2011年第7期43-48,共6页China Science and Technology Review

摘　　要：从分子结构设计的角度出发，选用马来酸酐、邻苯二甲酸酐和二异丙醇胺合成了一种具有端羟基型超支化功能单体参与聚羧酸高性能减水剂的主链结构的合成，通过正交设计试验研究制备了一系列具有端羟基型超支化聚羧酸减水剂。试验结果分析表明该减水剂具有更优的分散性能，正交分析得到最优组合：MAA与超支化单体c的摩尔比为2，链转移剂用量为O.3％，引发剂用量为2.8％，反应时间为7小时，反应温度为75℃。From the perspective of molecular design, we composed a kind of hyperbranched monomer to participate in the main chain of polycarboxylate superplastieizer with maleie anhydridea , phthalie anhydride and diisopropanolamine. Synthesized a series of new type PC designed by the method of orthogonal experimental. The results showed that the superplasticizer has better cement dispersing performance. Orthogonal experimental results showed the optimal combination---the molar ratio of MAA and monomer C is 2, the dosage of chain transfer agent is 0.3%, the dosage of initiator is2.8%, the reaction time is 7 hours, the reaction temperature is 75℃.

关 键 词：端羟基 超支化 聚羧酸减水剂 流动度 正交试验设计 

分 类 号：TQ463.4[化学工程—制药化工]