Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Dendritic phosphonic acid-based water reducing agent as well as preparation method and application thereof
The invention provides a dendritic phosphonic acid-based water reducing agent and a preparation method thereof. The core of the dendritic structure of the dendritic phosphonic acid-based water reducing agent is polyamide-amine (PAMAM) and a dendritic polyamine residue obtained by an iteration reaction of the PAMAM, the tail end of the dendritic polyamine residue is -NH2,--NH2 and -NH- partially connected with polyether side chains, and phosphorylation is carried out partially to obtain a terminal phosphonic acid group. The dendritic phosphonic acid-based water reducing agent is a water reducing agent with a brand-new structure, can effectively prevent the polyether side chain from being adsorbed among montmorillonite layers, improves the clay resistance of the water reducing agent, and has the characteristics of high adaptability to cement and high slump loss resistance. The dendritic phosphonic acid-based water reducing agent is applied as a cement-based material dispersing agent, and has the advantages of strong adaptability to cement, excellent clay resistance and high slump loss resistance.
本发明提供一种树状膦酸基减水剂及其制备方法，本发明所述树状膦酸基减水剂的树状结构的核心是聚酰胺‑胺（PAMAM）及其叠代反应获得的树状多胺基残基，所述树状多胺基残基的末端均为‑NH2，‑‑NH2，‑NH‑部分连接聚醚侧链，部分经亚磷酸化获得末端膦酸基。所述树状膦酸基减水剂一种全新结构的减水剂，能够有效阻止聚醚侧链在蒙脱土层间的吸附，提高减水剂的抗黏土性能，且膦酸基减水剂具有对水泥适应性好，保坍性强的特性。所述树状膦酸基减水剂作为水泥基材料分散剂应用，对水泥适应性强，抗黏土性能优越，保坍性好。
Dendritic phosphonic acid-based water reducing agent as well as preparation method and application thereof
The invention provides a dendritic phosphonic acid-based water reducing agent and a preparation method thereof. The core of the dendritic structure of the dendritic phosphonic acid-based water reducing agent is polyamide-amine (PAMAM) and a dendritic polyamine residue obtained by an iteration reaction of the PAMAM, the tail end of the dendritic polyamine residue is -NH2,--NH2 and -NH- partially connected with polyether side chains, and phosphorylation is carried out partially to obtain a terminal phosphonic acid group. The dendritic phosphonic acid-based water reducing agent is a water reducing agent with a brand-new structure, can effectively prevent the polyether side chain from being adsorbed among montmorillonite layers, improves the clay resistance of the water reducing agent, and has the characteristics of high adaptability to cement and high slump loss resistance. The dendritic phosphonic acid-based water reducing agent is applied as a cement-based material dispersing agent, and has the advantages of strong adaptability to cement, excellent clay resistance and high slump loss resistance.
本发明提供一种树状膦酸基减水剂及其制备方法，本发明所述树状膦酸基减水剂的树状结构的核心是聚酰胺‑胺（PAMAM）及其叠代反应获得的树状多胺基残基，所述树状多胺基残基的末端均为‑NH2，‑‑NH2，‑NH‑部分连接聚醚侧链，部分经亚磷酸化获得末端膦酸基。所述树状膦酸基减水剂一种全新结构的减水剂，能够有效阻止聚醚侧链在蒙脱土层间的吸附，提高减水剂的抗黏土性能，且膦酸基减水剂具有对水泥适应性好，保坍性强的特性。所述树状膦酸基减水剂作为水泥基材料分散剂应用，对水泥适应性强，抗黏土性能优越，保坍性好。
Dendritic phosphonic acid-based water reducing agent as well as preparation method and application thereof
一种树状膦酸基减水剂及其制备方法和应用
WANG BING (Autor:in) / WANG TAO (Autor:in) / QI SHUAI (Autor:in) / MA JIANFENG (Autor:in) / YANG YONG (Autor:in) / RAN QIANPING (Autor:in)
25.01.2022
Patent
Elektronische Ressource
Chinesisch
Single-chain phosphonic acid-based water reducing agent and preparation method thereof
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2024
Preparation method of phosphonic acid-based water reducing agent with slump retaining performance
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2022