次磷酸钠
次磷酸
高效减水剂
聚合
乙醚
原材料
丙烯酸
材料科学
水溶液
钠
化学工程
化学
核化学
高分子化学
有机化学
复合材料
单体
聚合物
工程类
图层(电子)
电镀
抗压强度
出处
期刊:Journal of physics
[IOP Publishing]
日期:2022-02-01
卷期号:2194 (1): 012028-012028
被引量:3
标识
DOI:10.1088/1742-6596/2194/1/012028
摘要
Abstract HPEG has long been widely used as an alternative to TPEG. In this study, a new high-performance HPEG-type polycarboxylate superplasticizer PCE-A was synthesized by using H 2 O 2 and sodium hypophosphite/Vc redox initiation system to provide free radicals under aqueous polymerization conditions with HPEG and acrylic acid as the main raw materials. The results showed that the best performance of the synthetic polycarboxylate superplasticizer was achieved when the acid to ether ratio was 4.50, Vc was 0.25%, H2O2 was 0.80% and sodium hypophosphite was 1.7%, which could effectively reduce the amount of admixture without affecting the working performance of concrete, and the concrete strength was higher.
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