抗泥型聚羧酸减水剂的合成及性能研究

关键字：抗泥型聚羧酸减水剂；VPEG；交联

（科之杰新材料集团有限公司，福建 厦门  361100）

    摘要：通过分子结构设计，在过氧化氢-甲醛合次硫酸氢钠氧化还原引发体系下，合成了抗泥型聚羧酸减水剂。试验结果表明，反应温度为15 ℃，n（AA）∶n（2-甲基丙烯酰氧乙基磷酸酯）∶n[磷酸二（丙烯酸羟乙基）酯]∶n（3-巯基丙酸）∶n（VPEG）=2.5∶0.2∶0.05∶0.14∶1.0时，制备的抗泥型聚羧酸减水剂综合性能最佳，该聚羧酸减水剂具有优异的分散性、分散保持性及抗泥性。

    关键词：抗泥型聚羧酸减水剂；VPEG；交联

    中图分类号：TU528.042+.2        文献标识码：A        文章编号：1001-702X（2018）05-0041-04

 

Synthesis and properties of the polycarboxylate superplasticizer for clay tolerance

ZHONG Lina

（Kezhijie New Material Group Co. Ltd.，Xiamen 361100，China）

  Abstract：Polycarboxylate superplasticizer for clay tolerance was synthesized by designing the molecular structure at H2O2-CH3NaO3S.2H2O redox initiation system. It showed the best overall performance when n（AA）∶n（2-methacryloyloxyethyl phosphate）∶n[2-（acryloyloxy）ethyl hydrogen phosphate]∶n（3-mercaptopropionic acid）∶n（VPEG） was 2.5∶0.2∶0.05∶0.14∶1.0 and the synthesized temperature was 15 ℃. The experiment results showed that the polycarboxylate superplasticizer had excellent dispersibility，dispersion retention and clay tolerance.

    Key words：polycarboxylate superplasticizer for clay tolerance，VPEG，crosslink