- 目录
- 化学建材
- 首页
马来酸甘油磷酸酯改性型聚羧酸减水剂的合成及性能研究
作者：刘明，张磊，闫松龄，叶子
（中建材料技术研究成都有限公司，四川 成都 618113）
摘要：以缩水甘油、多聚磷酸、马来酸酐合成的马来酸甘油磷酸酯作为功能单体，与丙烯酸、烯丙醇聚氧乙烯醚共聚，同时采用过硫酸铵-双氧水/抗坏血酸的双引发体系作为引发剂，合成单体转化率达95%的聚羧酸减水剂，该减水剂对水泥有良好的吸附分散性能，2 h混凝土坍落度损失小于10%。
关键词：马来酸甘油磷酸酯；烯丙醇聚氧乙烯醚；过硫酸铵-双氧水/抗坏血酸；聚羧酸减水剂；单体转化率
中图分类号：TU528.042+.2 文献标识码：A 文章编号：1001-702X（2020）12-0148-05
Study on synthesis and properties of allyl alcohol polyoxyethylene ether polycarboxylic superplasticizer
LIU Ming，ZHANG Lei，YAN Songling，YE Zi
（China West Construction Academy of Building Materials，Chengdu 618113，China）
Abstract：A polycarboxylic superplasticizer with monomer conversion of 95% was synthesized by copolymerization of acrylic acid，allyl alcohol polyoxyethylene ether and glycerophosphate maleate which was synthesized by glycidyl，polyphosphate，maleic anhydride，and ammonium persulfate hydrogen peroxide/ascorbic acid "double initiation system" was employed to initiate the reaction. The polycarboxylic superplasticizer show good adsorption and dispersion performance on cement.The slump loss of concrete is less than 10% in 2 hours.
Key words：glycerophosphate maleate，allyl polyoxyethylene ether，ammonium persulfate hydrogen peroxide/ascorbic acid，polycarboxylic superplasticizer，monomer conversion rate