Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Phosphate water reducing agent as well as preparation method and application thereof
The invention discloses a phosphate water reducer as well as a preparation method and application thereof, and belongs to the technical field of concrete admixtures. The phosphate water reducing agent is prepared by the following steps: reacting a polyethylene polyamine monomer with a polyepoxy compound to obtain a long-chain or dendritic polyamine compound, carrying out substitution reaction on the polyamine compound and chlorinated polyether, and carrying out phosphorylation reaction on active hydrogen in the polyamine compound and phosphorous acid to obtain the phosphate water reducing agent, the amino group of the polyethylene polyamine monomer is connected with the epoxy group of the multi-epoxy-group compound in a ring-opening manner, and the amino group of the polyamine compound is connected with the chlorinated polyether through a substitution reaction; the molecular weight Mw of the phosphate water reducing agent is 10000 to 25000. The phosphate water reducing agent is a long-chain or dendritic water reducing agent with full phosphate adsorption groups, and is large in molecular weight, large in steric hindrance and high in phosphite adsorption capacity, so that the water reducing agent is high in dispersity, good in adaptability to cement glue materials and good in clay resistance.
本发明公开了一种磷酸盐减水剂、制备方法及其应用，属于混凝土外加剂技术领域。所述磷酸盐减水剂以多乙烯多胺类单体与多环氧基化合物反应，得到长链状或枝状的多胺化合物，多胺化合物再与氯代聚醚发生取代反应，继而多胺化合物中的活性氢再与亚磷酸发生亚磷酸化反应，得到所述磷酸盐减水剂；所述多乙烯多胺类单体胺基与多环氧基化合物的环氧基开环相连，所述多胺化合物的胺基与氯代聚醚通过取代反应相连；所述磷酸盐减水剂的分子量Mw为10000‑25000。所述磷酸盐减水剂为一种长链状或枝状的全磷酸基吸附基团的减水剂，分子量大，空间位阻大，亚磷酸基吸附能力强，使得减水剂分散性强，对水泥胶材适应好，抗黏土性能好。
Phosphate water reducing agent as well as preparation method and application thereof
The invention discloses a phosphate water reducer as well as a preparation method and application thereof, and belongs to the technical field of concrete admixtures. The phosphate water reducing agent is prepared by the following steps: reacting a polyethylene polyamine monomer with a polyepoxy compound to obtain a long-chain or dendritic polyamine compound, carrying out substitution reaction on the polyamine compound and chlorinated polyether, and carrying out phosphorylation reaction on active hydrogen in the polyamine compound and phosphorous acid to obtain the phosphate water reducing agent, the amino group of the polyethylene polyamine monomer is connected with the epoxy group of the multi-epoxy-group compound in a ring-opening manner, and the amino group of the polyamine compound is connected with the chlorinated polyether through a substitution reaction; the molecular weight Mw of the phosphate water reducing agent is 10000 to 25000. The phosphate water reducing agent is a long-chain or dendritic water reducing agent with full phosphate adsorption groups, and is large in molecular weight, large in steric hindrance and high in phosphite adsorption capacity, so that the water reducing agent is high in dispersity, good in adaptability to cement glue materials and good in clay resistance.
本发明公开了一种磷酸盐减水剂、制备方法及其应用，属于混凝土外加剂技术领域。所述磷酸盐减水剂以多乙烯多胺类单体与多环氧基化合物反应，得到长链状或枝状的多胺化合物，多胺化合物再与氯代聚醚发生取代反应，继而多胺化合物中的活性氢再与亚磷酸发生亚磷酸化反应，得到所述磷酸盐减水剂；所述多乙烯多胺类单体胺基与多环氧基化合物的环氧基开环相连，所述多胺化合物的胺基与氯代聚醚通过取代反应相连；所述磷酸盐减水剂的分子量Mw为10000‑25000。所述磷酸盐减水剂为一种长链状或枝状的全磷酸基吸附基团的减水剂，分子量大，空间位阻大，亚磷酸基吸附能力强，使得减水剂分散性强，对水泥胶材适应好，抗黏土性能好。
Phosphate water reducing agent as well as preparation method and application thereof
一种磷酸盐减水剂、制备方法及其应用
WANG TAO (Autor:in) / WANG BING (Autor:in) / RAN QIANPING (Autor:in) / SHU XIN (Autor:in) / HAN ZHENG (Autor:in) / LU JIAYUE (Autor:in) / ZHOU DONGLIANG (Autor:in) / YU YINHUI (Autor:in)
08.11.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2020
Water reducing agent as well as preparation method and application thereof
| Europäisches Patentamt | 2023
Viscosity-reducing water reducing agent as well as preparation method and application method thereof
| Europäisches Patentamt | 2024
Halogen ion-free phosphate water reducing agent and preparation method and application thereof
| Europäisches Patentamt | 2020