常温合成聚羧酸减水剂工艺及性能研究  

Research on synthesis process and performance of polycarboxylic water reducer at ambient temperature

作　　者：林顺官 LIN Shunguan(Fujian Green Building Technology Key Laboratory,Fujian Academy of Building Research Co.,Ltd.,Fuzhou 350025,China)

机构地区：[1]福建省建筑科学研究院有限责任公司福建省绿色建筑技术重点实验室,福建福州350025

出　　处：《混凝土》2020年第12期77-79,84,共4页Concrete

摘　　要：以雕白锌/双氧水组成的氧化还原引发体系,采用不饱和单体丙烯酸(AA)、甲代烯丙醇聚氧乙烯醚(HPEG)为主要原料,在水溶液中通过自由基聚合反应合成聚羧酸减水剂。该工艺可将生产温度降低至10℃,大大降低生产成本,且合成的减水剂具有减水率高、保坍性能好等优点。Zinc-rongalite/hydrogen peroxide redox system was employed to initiate the free radical polymerization of polycarboxylic water reducer,which was synthesized by using acrylic acid(AA)and methallyl alcohol polyoxyethylene ether(HPEG)as the main polymeric monomers in aqueous solution.The process can reduce the production temperature to below 10℃and greatly reduce the production cost.The synthesized water reducer has the advantages of high water reducing rate and good slump retention performance.

关 键 词：聚羧酸减水剂 氧化还原引发体系 雕白锌 常温 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]