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A platform for research: civil engineering, architecture and urbanism
Mud-resistant polycarboxylate-type water reducing agent and preparation method and application thereof
The invention provides a mud-resistant polycarboxylate-type water reducing agent. According to the invention, the molecular structure of the water reducing agent contains amide groups, so competitiveadsorption of clay to the polycarboxylate-type water reducing agent can be effectively reduced, the adsorption amount of the polycarboxylate-type water reducing agent is increased, and the dispersioneffect of the polycarboxylate-type water reducing agent on cement particles is facilitated; and as the molecular structure of the water reducing agent has a short polyoxyethylene side chain, the intercalation adsorption effect of the clay on the polycarboxylate-type water reducing agent can be effectively reduced, and the water reducing efficiency of the polycarboxylate-type water reducing agent is improved. The preparation method of the mud-resistant polycarboxylate-type water reducing agent provided by the invention is wide in raw material source, low in cost, simple in production process operation, easy to control, safe and environment-friendly, and does not use an organic solvent.
本发明提供了一种抗泥型聚羧酸系减水剂，由于减水剂分子结构中含有酰胺基团，能有效减少粘土对聚羧酸系减水剂的竞争吸附，提高聚羧酸减水剂的吸附量，有利于聚羧酸减水剂对水泥颗粒的分散作用；由于减水剂分子结构中具有较短的聚氧乙烯侧链，能有效减少粘土对聚羧酸系减水剂的插层吸附作用，提高聚羧酸减水剂的减水效率。而且本发明提供的抗泥型聚羧酸系减水剂的制备方法原材料来源广泛，成本低，生产过程操作简单，方法易控制，不使用有机溶剂，安全环保。
Mud-resistant polycarboxylate-type water reducing agent and preparation method and application thereof
The invention provides a mud-resistant polycarboxylate-type water reducing agent. According to the invention, the molecular structure of the water reducing agent contains amide groups, so competitiveadsorption of clay to the polycarboxylate-type water reducing agent can be effectively reduced, the adsorption amount of the polycarboxylate-type water reducing agent is increased, and the dispersioneffect of the polycarboxylate-type water reducing agent on cement particles is facilitated; and as the molecular structure of the water reducing agent has a short polyoxyethylene side chain, the intercalation adsorption effect of the clay on the polycarboxylate-type water reducing agent can be effectively reduced, and the water reducing efficiency of the polycarboxylate-type water reducing agent is improved. The preparation method of the mud-resistant polycarboxylate-type water reducing agent provided by the invention is wide in raw material source, low in cost, simple in production process operation, easy to control, safe and environment-friendly, and does not use an organic solvent.
本发明提供了一种抗泥型聚羧酸系减水剂，由于减水剂分子结构中含有酰胺基团，能有效减少粘土对聚羧酸系减水剂的竞争吸附，提高聚羧酸减水剂的吸附量，有利于聚羧酸减水剂对水泥颗粒的分散作用；由于减水剂分子结构中具有较短的聚氧乙烯侧链，能有效减少粘土对聚羧酸系减水剂的插层吸附作用，提高聚羧酸减水剂的减水效率。而且本发明提供的抗泥型聚羧酸系减水剂的制备方法原材料来源广泛，成本低，生产过程操作简单，方法易控制，不使用有机溶剂，安全环保。
Mud-resistant polycarboxylate-type water reducing agent and preparation method and application thereof
一种抗泥型聚羧酸系减水剂及其制备方法和应用
REN JUN (author) / WANG YAOCHENG (author) / TAN HONGBO (author) / WANG XIANFENG (author) / FANG YUNHUI (author)
2020-05-01
Patent
Electronic Resource
Chinese
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