固体聚羧酸减水剂的合成研究

关键字：固体,聚,羧酸,减,水剂,的,合成,研究,科之,杰,

（科之杰新材料集团有限公司，福建 厦门  361101）

    摘要：将聚醚胺与巴豆酸酰化后得到微交联单体，再与甲基丙烯酸、异丁烯醇聚氧乙烯醚（HPEG）本体共聚得到一种固体聚羧酸减水剂。研究了大单体分子质量、酸醚比、微交联单体用量、引发剂BPO用量、反应温度、转速等因素对合成固体聚羧酸减水剂性能的影响。试验结果表明，当大单体采用HPEG2400，酸醚比为4.4，微交联单体和引发剂用量分别为大单体质量的10%、1.3%，转速为800 r/min，反应温度为60 ℃时，合成的固体聚羧酸减水剂综合性能最佳。

    关键词：微交联；酰化；合成；固体聚羧酸减水剂

    中图分类号：TU528.042+.2        文献标识码：A        文章编号：1001-702X（2019）09-0014-05

 

Synthesize research on solid polycarboxylate superplasticizer

LIN Yanmei，SHAO Youzhe，LAI Huazhen，ZHANG Xiaofang

（KZJ New Materials Group Co. Ltd.，Xiamen 361101，China）

    Abstract：A solid polycarboxylate superplasticizer was synthesized with methacrylic acid，Polyoxyethylene（HPEG），and microcrosslinking monomer（P） synthesized by using polyetheramine and croton acid. Studied HPEG molecular weight，acid/ether

mole ratio，P dosage，BPO dosage，speed and reaction temperature on the solid polycarboxylate superlasticizer performance. The results showed that when HPEG molecular weight was 2400，acid/ether mole ratio was 4.4，P dosage was 10% of HPEG，BPO dosage was 1.3% of HPEG，speed was 800 r/min and reaction temperature was 60 ℃，synthetic polycarboxylate superplasticizer had the best comprehensive performance.

    Key words：microcrosslinking，acylation，synthesis，solid polycarboxylate superplasticizer