本文测试了甲基丙烯酸与丙烯酸对聚羧酸减水剂分散性的影响;将合成的减水剂样品进行基本性能测试,评价指标包括净浆流动度及其经时损失等;尝试用新的链转移剂代替巯基丙酸系链转移剂。 In this paper, the influence of methacrylic acid and acrylic acid on the dispersibility of polycarboxylate superplasticizer was tested. The basic properties of the synthesized superplasticizer sample were tested. The evaluation index included the fluidity of paste and its loss over time. Chain transfer agent instead of mercaptopropionic acid chain transfer agent.