Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Early-strength polycarboxylic acid water reducing agent for subway segment and preparation method of early-strength polycarboxylic acid water reducing agent
The invention relates to the technical field of concrete admixtures, in particular to an early-strength polycarboxylic acid water reducing agent for a subway segment and a preparation method of the early-strength polycarboxylic acid water reducing agent. The water reducing agent is obtained by copolymerizing a modified polyether macromonomer, a phosphonic acid group-containing functional monomer, a sulfonic acid group functional monomer, a vinyl siloxane functional monomer and a first unsaturated acid (anhydride), wherein the modified polyether macromonomer is prepared from an unsaturated polyether monomer, a second unsaturated acid (anhydride) and an amidation reagent through amidation reaction. According to the early-strength polycarboxylate water reducing agent for the subway segment, the vinyl siloxane functional monomer, the phosphonic acid group-containing functional monomer and the sulfonic acid group-containing functional monomer are introduced into the molecular structure of the polycarboxylate water reducing agent, so that the polycarboxylate water reducing agent for the subway segment, which is high in early strength and dispersity, is prepared; therefore, the application of the subway segment concrete is improved, and good economic benefits are achieved.
本发明涉及混凝土外加剂技术领域，特别涉及一种地铁管片用早强型聚羧酸减水剂及其制备方法，其中一种地铁管片用早强型聚羧酸减水剂，由改性聚醚大单体、含膦酸基团功能单体、磺酸基功能单体、乙烯基硅氧烷功能单体和第一不饱和酸(酐)共聚得到；其中，所述改性聚醚大单体为不饱和聚醚单体、第二不饱和酸(酐)和酰胺化试剂通过酰胺化反应制得。本发明提供的地铁管片用早强型聚羧酸减水剂通过在聚羧酸减水剂分子结构中引入了乙烯基硅氧烷功能单体、含膦酸基团功能单体和磺酸基功能单体，制备出具有高早强、高分散性的地铁管片用聚羧酸减水剂，以此提高了地铁管片混凝土应用的高校便捷性，具有良好的经济效益。
Early-strength polycarboxylic acid water reducing agent for subway segment and preparation method of early-strength polycarboxylic acid water reducing agent
The invention relates to the technical field of concrete admixtures, in particular to an early-strength polycarboxylic acid water reducing agent for a subway segment and a preparation method of the early-strength polycarboxylic acid water reducing agent. The water reducing agent is obtained by copolymerizing a modified polyether macromonomer, a phosphonic acid group-containing functional monomer, a sulfonic acid group functional monomer, a vinyl siloxane functional monomer and a first unsaturated acid (anhydride), wherein the modified polyether macromonomer is prepared from an unsaturated polyether monomer, a second unsaturated acid (anhydride) and an amidation reagent through amidation reaction. According to the early-strength polycarboxylate water reducing agent for the subway segment, the vinyl siloxane functional monomer, the phosphonic acid group-containing functional monomer and the sulfonic acid group-containing functional monomer are introduced into the molecular structure of the polycarboxylate water reducing agent, so that the polycarboxylate water reducing agent for the subway segment, which is high in early strength and dispersity, is prepared; therefore, the application of the subway segment concrete is improved, and good economic benefits are achieved.
本发明涉及混凝土外加剂技术领域，特别涉及一种地铁管片用早强型聚羧酸减水剂及其制备方法，其中一种地铁管片用早强型聚羧酸减水剂，由改性聚醚大单体、含膦酸基团功能单体、磺酸基功能单体、乙烯基硅氧烷功能单体和第一不饱和酸(酐)共聚得到；其中，所述改性聚醚大单体为不饱和聚醚单体、第二不饱和酸(酐)和酰胺化试剂通过酰胺化反应制得。本发明提供的地铁管片用早强型聚羧酸减水剂通过在聚羧酸减水剂分子结构中引入了乙烯基硅氧烷功能单体、含膦酸基团功能单体和磺酸基功能单体，制备出具有高早强、高分散性的地铁管片用聚羧酸减水剂，以此提高了地铁管片混凝土应用的高校便捷性，具有良好的经济效益。
Early-strength polycarboxylic acid water reducing agent for subway segment and preparation method of early-strength polycarboxylic acid water reducing agent
一种地铁管片用早强型聚羧酸减水剂及其制备方法
ZHU SHAOHONG (Autor:in) / LIN YANMEI (Autor:in) / LAI HUAZHEN (Autor:in) / FANG YUNHUI (Autor:in) / YU FEIYU (Autor:in) / ZHU QIAOYONG (Autor:in)
11.01.2022
Patent
Elektronische Ressource
Chinesisch
Preparation method of early-strength polycarboxylic acid high-performance water reducing agent
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