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A platform for research: civil engineering, architecture and urbanism
Preparation method and application of phosphonate water reducing agent
The invention discloses a preparation method and application of a phosphonate water reducing agent. The preparation method of the phosphonate water reducing agent comprises the following steps: firstly, carrying out bulk polymerization on styrene and an unsaturated polyether monomer to obtain a polymerization product, secondly, adding a chloromethylation monomer into the polymerization product, carrying out chloromethylation to obtain a chloromethylation product, and then, carrying out amination reaction on the chloromethylation product and a polyamine monomer to obtain the phosphonate water reducing agent. And carrying out Mannich reaction and phosphorylation on the obtained amination product, formaldehyde and phosphorous acid to obtain the phosphonate water reducing agent. The reaction conditions are simple and easy to operate, and the obtained water reducing agent is stable in structural performance. As the main chain contains a phosphonic acid adsorption group, the sulfate-resistant cement-based admixture has better sulfate resistance, is insensitive to components of the cement-based admixture, has strong adaptability to cement and has good slump loss resistance. The phosphonate water reducing agent can be independently used and can also be compounded with other water reducing agents on the market for use.
本发明公开了一种膦酸盐减水剂的制备方法及其应用。本发明所述膦酸盐减水剂的制备方法包括：首先采用苯乙烯和不饱和聚醚单体进行本体聚合得到聚合产物，其次在聚合产物中加入氯甲基化单体进行氯甲基化得到氯甲基化产物，之后将氯甲基化产物与多胺单体进行胺化反应，得到的胺化产物与甲醛、亚磷酸通过曼尼希反应及亚磷酸化得到所述膦酸盐减水剂。本发明反应条件简单易操作，得到的减水剂结构性能稳定。由于主链中含有膦酸吸附基团，具有较好抗硫酸盐性能，对水泥基掺合料成分不敏感，对水泥适应性强，保坍性能好。此膦酸盐减水剂可以单独使用，也可以和市面上的其他减水剂复合使用。
Preparation method and application of phosphonate water reducing agent
The invention discloses a preparation method and application of a phosphonate water reducing agent. The preparation method of the phosphonate water reducing agent comprises the following steps: firstly, carrying out bulk polymerization on styrene and an unsaturated polyether monomer to obtain a polymerization product, secondly, adding a chloromethylation monomer into the polymerization product, carrying out chloromethylation to obtain a chloromethylation product, and then, carrying out amination reaction on the chloromethylation product and a polyamine monomer to obtain the phosphonate water reducing agent. And carrying out Mannich reaction and phosphorylation on the obtained amination product, formaldehyde and phosphorous acid to obtain the phosphonate water reducing agent. The reaction conditions are simple and easy to operate, and the obtained water reducing agent is stable in structural performance. As the main chain contains a phosphonic acid adsorption group, the sulfate-resistant cement-based admixture has better sulfate resistance, is insensitive to components of the cement-based admixture, has strong adaptability to cement and has good slump loss resistance. The phosphonate water reducing agent can be independently used and can also be compounded with other water reducing agents on the market for use.
本发明公开了一种膦酸盐减水剂的制备方法及其应用。本发明所述膦酸盐减水剂的制备方法包括：首先采用苯乙烯和不饱和聚醚单体进行本体聚合得到聚合产物，其次在聚合产物中加入氯甲基化单体进行氯甲基化得到氯甲基化产物，之后将氯甲基化产物与多胺单体进行胺化反应，得到的胺化产物与甲醛、亚磷酸通过曼尼希反应及亚磷酸化得到所述膦酸盐减水剂。本发明反应条件简单易操作，得到的减水剂结构性能稳定。由于主链中含有膦酸吸附基团，具有较好抗硫酸盐性能，对水泥基掺合料成分不敏感，对水泥适应性强，保坍性能好。此膦酸盐减水剂可以单独使用，也可以和市面上的其他减水剂复合使用。
Preparation method and application of phosphonate water reducing agent
一种膦酸盐减水剂的制备方法及其应用
WANG BING (author) / WANG TAO (author) / RAN QIANPING (author) / XIA ZHENGYI (author) / HUANG ZHEN (author) / HAN ZHENG (author) / ZHANG JIANGANG (author) / LU JIAYUE (author)
2024-03-22
Patent
Electronic Resource
Chinese
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