Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anti-segregation agent and preparation method thereof
The invention relates to an anti-segregation agent and a preparation method thereof, and the anti-segregation agent is prepared from the following raw materials in parts by weight: 35 parts of acrylamide; 1.75 to 10.5 parts of an unsaturated acid monomer; 3.5 to 14 parts of an unsaturated amide monomer; 3.5 to 14 parts of an unsaturated sulfonate monomer; 1.75 to 7 parts of a workability adjusting monomer; 1-7 parts of an oxidant; 0.7-7 parts of a polymerizable reducing agent; and water; the workability adjusting monomer is polyethylene glycol dimethacrylate. According to the invention, polyethylene glycol dimethacrylate with a diolefin structure is introduced as a workability adjusting monomer for copolymerization, and meanwhile, the polyethylene glycol dimethacrylate is also used as a cross-linking agent with large molecular weight, so that the prepared anti-segregation agent is slightly cross-linked, and the requirements of concrete on flowability and workability over time are met. The problems that in the prior art, a polyacrylamide anti-segregation agent is low in concentration, performance is reduced due to decomposition after storage, and workability is poor after concrete loss are solved.
本发明涉及一种抗离析剂及其制备方法，以重量份数计，制备原料包括：丙烯酰胺35份；不饱和酸单体1.75～10.5份；不饱和酰胺单体3.5～14份；不饱和磺酸盐单体3.5～14份；和易性调节单体1.75～7份；氧化剂1～7份；可聚合还原剂0.7～7份；以及水；所述和易性调节单体为聚乙二醇二甲基丙烯酸酯。本发明引入带有双烯烃结构的聚乙二醇二甲基丙烯酸酯作为和易性调节单体引入共聚，同时它也作为大分子量的交联剂，使制备的抗离析剂轻微交联，满足混凝土经时流动性与和易性的需求。解决现有技术中存在的聚丙烯酰胺类抗离析剂的浓度较低、存储后分解导致性能下降、混凝土损失后和易性较差的问题。
Anti-segregation agent and preparation method thereof
The invention relates to an anti-segregation agent and a preparation method thereof, and the anti-segregation agent is prepared from the following raw materials in parts by weight: 35 parts of acrylamide; 1.75 to 10.5 parts of an unsaturated acid monomer; 3.5 to 14 parts of an unsaturated amide monomer; 3.5 to 14 parts of an unsaturated sulfonate monomer; 1.75 to 7 parts of a workability adjusting monomer; 1-7 parts of an oxidant; 0.7-7 parts of a polymerizable reducing agent; and water; the workability adjusting monomer is polyethylene glycol dimethacrylate. According to the invention, polyethylene glycol dimethacrylate with a diolefin structure is introduced as a workability adjusting monomer for copolymerization, and meanwhile, the polyethylene glycol dimethacrylate is also used as a cross-linking agent with large molecular weight, so that the prepared anti-segregation agent is slightly cross-linked, and the requirements of concrete on flowability and workability over time are met. The problems that in the prior art, a polyacrylamide anti-segregation agent is low in concentration, performance is reduced due to decomposition after storage, and workability is poor after concrete loss are solved.
本发明涉及一种抗离析剂及其制备方法，以重量份数计，制备原料包括：丙烯酰胺35份；不饱和酸单体1.75～10.5份；不饱和酰胺单体3.5～14份；不饱和磺酸盐单体3.5～14份；和易性调节单体1.75～7份；氧化剂1～7份；可聚合还原剂0.7～7份；以及水；所述和易性调节单体为聚乙二醇二甲基丙烯酸酯。本发明引入带有双烯烃结构的聚乙二醇二甲基丙烯酸酯作为和易性调节单体引入共聚，同时它也作为大分子量的交联剂，使制备的抗离析剂轻微交联，满足混凝土经时流动性与和易性的需求。解决现有技术中存在的聚丙烯酰胺类抗离析剂的浓度较低、存储后分解导致性能下降、混凝土损失后和易性较差的问题。
Anti-segregation agent and preparation method thereof
一种抗离析剂及其制备方法
ZHONG LINA (Autor:in) / LIN ZEYU (Autor:in) / FANG YUNHUI (Autor:in) / KE YULIANG (Autor:in) / MENG XIANGJIE (Autor:in)
09.01.2024
Patent
Elektronische Ressource
Chinesisch
Anti-segregation agent and preparation method thereof
| Europäisches Patentamt | 2024
Preparation method of concrete anti-segregation agent and anti-segregation agent
| Europäisches Patentamt | 2024
Concrete anti-segregation agent and preparation method thereof
| Europäisches Patentamt | 2023
Concrete anti-segregation agent and preparation method thereof
| Europäisches Patentamt | 2024
Anti-segregation agent for concrete and preparation method of anti-segregation agent
| Europäisches Patentamt | 2023