缓凝型聚羧酸减水剂的制备研究  

Research on preparation of set-retarding type polycarboxylate superplasticizers

作　　者：王有朋[1] 梁斌[1] 刘宇翔 陈培文 马会玲 田健龙 苟怡 WANG Youpeng;LIANG Bin;LIU Yuxiang;CHEN Peiwen;MA Huiling;TIAN Jianlong;GOU Yi(Department of Petrochemical Engineering,Lanzhou Petrochemical College of Vocational Technology,Lanzhou 730060,China)

机构地区：[1]兰州石化职业技术学院石油化学工程学院,甘肃兰州730060

出　　处：《新型建筑材料》2021年第9期27-29,45,共4页New Building Materials

基　　金：甘肃省高等学校科研项目(2020A-194);甘肃省2021年大学生创新创业训练计划项目;兰州石化职业技术学院科研项目(KJ2019-02)。

摘　　要：以烯丙基聚乙二醇、丙烯酸、丙烯酰胺、甲基丙烯磺酸钠等单体为主要原料,经自由基共聚合成缓凝型聚羧酸减水剂,并考察不同因素对聚羧酸减水剂性能的影响。结果表明,其最佳配合比为:n(AA)∶n(AM)∶n(MAS)∶n(APEG-2400)=3∶1∶1∶0.5,在最佳条件下合成的聚羧酸减水剂具有优异的分散性和保坍性。The set-retarding type polycarboxylate superplasticizers were synthesized by free radical copolymerization with different monomers include allyl polyethylene glycol,acrylic acid,acrylamide and sodium methacrylate sulfonate.The influence of different factors on the performances of polycarboxylate superplasticizers was investigated.The result showed the optimum conditions was n(AA)∶n(AM)∶n(MAS)∶n(APEG-2400)=3∶1∶1∶0.5,when the polycarboxylate superplasticizers have excellent dispersibility and slump retention.

关 键 词：聚羧酸减水剂 缓凝 高分散 合成 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]