以烯丙基聚氧乙烯醚(APEG)和甲基烯丙基聚氧乙烯醚(TPEG)复合单体与丙烯酸(AA)和烯丙基磺酸钠(SAS)为原料，在硫代硫酸钠(Na2 S2 O3)和复合引发剂体系的作用下，采用一步共聚法制备复合型聚羧酸高性能减水剂。从反应温度对减水剂分散性能的影响入手，从热动力学角度对单体活性的激发，反应体系聚合速率、引发剂的分解速率等进行了深入的研究，并结合红外光谱分析探讨了不同温度下合成减水剂的分子结构与减水剂性能的相关性。
The compound polycarboxylic high performance superplasticizer was synthetize with sodium thiosul-fate(Na2 S2 O3 )and composite initiator,which using multimonomer of allyl polyoxyethylene ether (APEG), methyl allyl polyethenoxy ether (TPEG),acrylic acid(AA)and sodium allysulfonate (SAS)as raw materials. The excitation of monomer reactivity,polymerization reaction rate of system and decomposition rate of initiator was studied from the view of thermal dynamic.The correlation between monomer structure and property of the superplasticizer in different reaction temperatures was studied with the analysis of infrared spectroscopy.
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