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  

Study on synthesis and properties of allyl alcohol polyoxyethylene ether polycarboxylic superplasticizer

作　　者：刘明 张磊 闫松龄 叶子 LIU Ming;ZHANG Lei;YAN Songling;YE Zi(China West Construction Academy of Building Materials,Chengdu 618113,China)

机构地区：[1]中建材料技术研究成都有限公司,四川成都618113

出　　处：《新型建筑材料》2020年第12期148-152,共5页New Building Materials

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%。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.

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 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]