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本文以马来酸酐(MAH),二乙二醇单丁醚,甲基丙烯酸-聚乙二醇单甲醚酯大单体(MPEGnMA)为主要反应原料,合成低收缩、降粘型聚羧酸系减水剂。将所得反应产物进行表面张力、早期混凝土收缩、水泥净浆和混凝土工作性能(坍落扩展度、T_(50)试验、V型漏斗时间)测试,结果表明:合成的减水剂对混凝土具有很好的低收缩和降粘效果。
In this paper, maleic anhydride (MAH), diethylene glycol monobutyl ether, methacrylic acid - polyethylene glycol monomethyl ether macromonomer (MPEGnMA) as the main reaction raw materials, synthesis of low shrinkage, viscosity-reducing polycarboxylic acid Department of superplasticizer. The results showed that the synthesized superplasticizer has very good performance for concrete, such as surface tension, shrinkage of early concrete, performance of cement paste and concrete (slump expansion, T 50, V-type funnel time) Good low shrinkage and viscosity reducing effect.