Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Associative thickening water-retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an associative thickening water-retaining agent and a preparation method thereof. The associative thickening and water-retaining agent is synthesized by adopting a one-pot method and adopting unsaturated acid, unsaturated polyether, unsaturated amide, a cross-linking agent and a hydrophobic monomer through free radical copolymerization, the prepared associative thickening and water-retaining agent has ultra-high molecular weight, rich amide groups and cross-linking and hydrophobic side chains, the preparation method is simple, the reaction time is short, the cost is low, and the associative thickening and water-retaining agent is suitable for industrial production. When being compounded with a polycarboxylate superplasticizer for use, the thickening agent has good thickening and water retention effects at the same time, can obviously improve the adverse effects of bleeding, segregation, bleeding and the like of a concrete mixture, and improves the workability of concrete.
本发明涉及混凝土外加剂技术领域，尤其是涉及一种缔合型增稠保水剂及其制备方法。通过采用一锅法，采用不饱和酸、不饱和聚醚、不饱和酰胺、交联剂和疏水单体通过自由基共聚而合成，制备得到的缔合型增稠保水剂具有超高分子量、丰富的酰胺基团、交联型与疏水性侧链，其制备方法简单，反应时间短，与聚羧酸减水剂复配使用时，同时具备良好的增稠和保水效果，能明显改善混凝土拌合物出现泌水、离析、泌浆等不良影响，提升混凝土的和易性。
Associative thickening water-retaining agent and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an associative thickening water-retaining agent and a preparation method thereof. The associative thickening and water-retaining agent is synthesized by adopting a one-pot method and adopting unsaturated acid, unsaturated polyether, unsaturated amide, a cross-linking agent and a hydrophobic monomer through free radical copolymerization, the prepared associative thickening and water-retaining agent has ultra-high molecular weight, rich amide groups and cross-linking and hydrophobic side chains, the preparation method is simple, the reaction time is short, the cost is low, and the associative thickening and water-retaining agent is suitable for industrial production. When being compounded with a polycarboxylate superplasticizer for use, the thickening agent has good thickening and water retention effects at the same time, can obviously improve the adverse effects of bleeding, segregation, bleeding and the like of a concrete mixture, and improves the workability of concrete.
本发明涉及混凝土外加剂技术领域，尤其是涉及一种缔合型增稠保水剂及其制备方法。通过采用一锅法，采用不饱和酸、不饱和聚醚、不饱和酰胺、交联剂和疏水单体通过自由基共聚而合成，制备得到的缔合型增稠保水剂具有超高分子量、丰富的酰胺基团、交联型与疏水性侧链，其制备方法简单，反应时间短，与聚羧酸减水剂复配使用时，同时具备良好的增稠和保水效果，能明显改善混凝土拌合物出现泌水、离析、泌浆等不良影响，提升混凝土的和易性。
Associative thickening water-retaining agent and preparation method thereof
一种缔合型增稠保水剂及其制备方法
TAN LIANG (Autor:in) / CHEN ZHIHAO (Autor:in) / HE ZHIQUAN (Autor:in) / WANG JUN (Autor:in) / YANG HONG (Autor:in) / LIU YAZHUO (Autor:in) / GONG WEIZHI (Autor:in)
09.06.2023
Patent
Elektronische Ressource
Chinesisch
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