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高酯化率MPEGAA大单体的合成
引用本文:吴峰,刘才林,任先艳,杨海君,来婷婷. 高酯化率MPEGAA大单体的合成[J]. 西南科技大学学报, 2012, 27(2): 24-26
作者姓名:吴峰  刘才林  任先艳  杨海君  来婷婷
作者单位:西南科技大学四川省非金属复合与功能材料重点实验室,四川绵阳,621010
基金项目:西南科技大学引进人才基金项目
摘    要:采用丙烯酸(AA)和聚乙二醇单甲醚(MPEG)为主要反应原料,通过逐步滴加带水剂甲苯的方法,研究其主要反应条件对酯化率的影响。在温度为90℃的条件下,制备的聚羧酸减水剂的活性大单体聚乙二醇单甲醚丙烯酸酯(MPEGAA)酯化率高达99.6%,双键保留率高达91.5%。测试了应用该大单体所合成的聚羧酸减水剂与几种水泥的适应性和分散保持性。

关 键 词:聚乙二醇单甲醚丙烯酸酯(MPEGAA)  酯化率  聚羧酸减水剂  净浆流动度

Synthesis of Macromer MPEGAA with High Esterification Ratio
WU Feng,LIU Cai-lin,REN Xian-yang,YANG Hai-jun,LAI Ting-ting. Synthesis of Macromer MPEGAA with High Esterification Ratio[J]. Journal of Southwest University of Science and Technology, 2012, 27(2): 24-26
Authors:WU Feng  LIU Cai-lin  REN Xian-yang  YANG Hai-jun  LAI Ting-ting
Affiliation:(State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)
Abstract:An active macromer polyethylene glycol monomerthy ester acrylate(MPEGAA) was synthesized by the esterification of acrylic acid(AA) with methoxyl polyethylene glycol(MPEG),when toluene was dropped gradually into the reaction system working as water-carrying agent at 90 ℃.The esterification rate can reach 99.6%,and the retention rate of double bonds is 91.5%.The polycarboxylate superplasticizer was synthetized by the active macromer,then,the adaptability and dispersion retentivity were tested between the superplasticizer and several cements.
Keywords:Methoxyl polyethylene glycol acrylate (MPEGAA)  Esterification rate  Polycarboxylate su-perplasticizer  Fluidity of cement paste
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