A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-strength polycarboxylate superplasticizer for prefabricated parts and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an early-strength polycarboxylate superplasticizer for prefabricated parts and a preparation method of the early-strength polycarboxylate superplasticizer. The early-strength polycarboxylate superplasticizer for the prefabricated parts is prepared from a polyether macromonomer, an amido functional monomer, a siloxane group functional monomer, an unsaturated carboxylic acid (anhydride) comonomer and a sulfo functional monomer according to a mass ratio of (18-20): (1.2-1.5): (0.8-1): (2-2.8): (0.5-0.8) through copolymerization reaction. Through molecular design and research on the high-performance polycarboxylate superplasticizer, an amide group, a siloxane group and a sulfonic acid group with early strength characteristics are introduced into the molecular structure of the polycarboxylate superplasticizer, and meanwhile, a high-molecular-weight polyether macromonomer is introduced, so the early-strengthpolycarboxylate superplasticizer with high dispersity is prepared; and thus, cement hydration is further promoted, the dispersing performance and the early strength performance of the concrete are improved, and the working performance of the concrete in the aspect of prefabricated part concrete is improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种预制构件用早强型聚羧酸减水剂及其制备方法，其中一种预制构件用早强型聚羧酸减水剂由聚醚大单体、酰胺基功能单体、硅氧烷基团功能单体、不饱和羧酸(酐)共聚单体和磺酸基功能单体按质量比(18～20)：(1.2～1.5)：(0.8～1)：(2～2.8)：(0.5～0.8)通过共聚反应制得。通过对聚羧酸高性能减水剂进行分子设计和研究，在聚羧酸减水剂分子结构中引入具有早强特性的酰胺基团、硅氧烷基团和磺酸基团，同时引入大分子量的聚醚大单体，制备出具有高分散性的早强型聚羧酸减水剂，进一步促进水泥水化，改善混凝土分散性能和早期强度性能，提高其在预制构件混凝土方面的工作性能。
Early-strength polycarboxylate superplasticizer for prefabricated parts and preparation method thereof
The invention relates to the technical field of concrete admixtures, in particular to an early-strength polycarboxylate superplasticizer for prefabricated parts and a preparation method of the early-strength polycarboxylate superplasticizer. The early-strength polycarboxylate superplasticizer for the prefabricated parts is prepared from a polyether macromonomer, an amido functional monomer, a siloxane group functional monomer, an unsaturated carboxylic acid (anhydride) comonomer and a sulfo functional monomer according to a mass ratio of (18-20): (1.2-1.5): (0.8-1): (2-2.8): (0.5-0.8) through copolymerization reaction. Through molecular design and research on the high-performance polycarboxylate superplasticizer, an amide group, a siloxane group and a sulfonic acid group with early strength characteristics are introduced into the molecular structure of the polycarboxylate superplasticizer, and meanwhile, a high-molecular-weight polyether macromonomer is introduced, so the early-strengthpolycarboxylate superplasticizer with high dispersity is prepared; and thus, cement hydration is further promoted, the dispersing performance and the early strength performance of the concrete are improved, and the working performance of the concrete in the aspect of prefabricated part concrete is improved.
本发明涉及混凝土外加剂技术领域，特别涉及一种预制构件用早强型聚羧酸减水剂及其制备方法，其中一种预制构件用早强型聚羧酸减水剂由聚醚大单体、酰胺基功能单体、硅氧烷基团功能单体、不饱和羧酸(酐)共聚单体和磺酸基功能单体按质量比(18～20)：(1.2～1.5)：(0.8～1)：(2～2.8)：(0.5～0.8)通过共聚反应制得。通过对聚羧酸高性能减水剂进行分子设计和研究，在聚羧酸减水剂分子结构中引入具有早强特性的酰胺基团、硅氧烷基团和磺酸基团，同时引入大分子量的聚醚大单体，制备出具有高分散性的早强型聚羧酸减水剂，进一步促进水泥水化，改善混凝土分散性能和早期强度性能，提高其在预制构件混凝土方面的工作性能。
Early-strength polycarboxylate superplasticizer for prefabricated parts and preparation method thereof
一种预制构件用早强型聚羧酸减水剂及其制备方法
ZHU SHAOHONG (author) / LIN YANMEI (author) / FANG YUNHUI (author) / KE YULIANG (author) / ZHU QIAOYONG (author) / YU FEIYU (author)
2022-01-18
Patent
Electronic Resource
Chinese
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