Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer for reducing viscosity of concrete and preparation method thereof
The invention discloses a polycarboxylic acid water reducing agent for reducing concrete viscosity and a preparation method thereof, and relates to the technical field of water reducing agents. The water reducing agent comprises the following raw materials in parts by weight: 25-35 parts of an acrylic acid solution, 1-3 parts of a complexing agent, 5-8 parts of 2-acrylamido-2-methylpropanesulfonic acid, 3-5 parts of an active protective agent, 2-4 parts of an oxidizing agent, 5-6 parts of an ammonium persulfate aqueous solution, 6-8 parts of a chain transfer agent, 2-4 parts of a viscosity reducer, 0.05-0.1 part of a catalyst, 3-6 parts of a sodium hydroxide solution and 40-50 parts of deionized water. The polycarboxylic acid water reducing agent for reducing the viscosity of the concrete prepared by the method is stable in performance and convenient to transport after being prepared into powder, the concrete workability of the water reducing agent is good, the setting time, and the strength and other performance of the concrete are not influenced. Through design of a formula and a polymerization process, the prepared polycarboxylic acid water reducing agent powder is simple in preparation process and can be widely applied to the field of pumping concrete and mortar.
本发明公开了一种降低混凝土粘度的聚羧酸减水剂及其制备方法，涉及减水剂技术领域，包括以下重量份数的原料：丙烯酸溶液25‑35份、络合剂1‑3份、2‑丙烯酰胺基‑2‑甲基丙磺酸5‑8份、活性保护剂3‑5份、氧化剂2‑4份、过硫酸铵水溶液5‑6份、链转移剂6‑8份、降粘剂2‑4份、催化剂0.05‑0.1份、氢氧化钠溶液3‑6份以及去离子水40‑50份，本发明方法制备的降低混凝土粘度的聚羧酸减水剂配成粉末后性能稳定，运输方便，本发明减水剂的混凝土和易性良好，并且不影响混凝土的凝结时间、强度等其它性能，通过配方及聚合工艺的设计，制备的聚羧酸减水剂粉体，制作工艺简单，可以广泛应用于泵送混凝土及砂浆领域。
Polycarboxylate superplasticizer for reducing viscosity of concrete and preparation method thereof
The invention discloses a polycarboxylic acid water reducing agent for reducing concrete viscosity and a preparation method thereof, and relates to the technical field of water reducing agents. The water reducing agent comprises the following raw materials in parts by weight: 25-35 parts of an acrylic acid solution, 1-3 parts of a complexing agent, 5-8 parts of 2-acrylamido-2-methylpropanesulfonic acid, 3-5 parts of an active protective agent, 2-4 parts of an oxidizing agent, 5-6 parts of an ammonium persulfate aqueous solution, 6-8 parts of a chain transfer agent, 2-4 parts of a viscosity reducer, 0.05-0.1 part of a catalyst, 3-6 parts of a sodium hydroxide solution and 40-50 parts of deionized water. The polycarboxylic acid water reducing agent for reducing the viscosity of the concrete prepared by the method is stable in performance and convenient to transport after being prepared into powder, the concrete workability of the water reducing agent is good, the setting time, and the strength and other performance of the concrete are not influenced. Through design of a formula and a polymerization process, the prepared polycarboxylic acid water reducing agent powder is simple in preparation process and can be widely applied to the field of pumping concrete and mortar.
本发明公开了一种降低混凝土粘度的聚羧酸减水剂及其制备方法，涉及减水剂技术领域，包括以下重量份数的原料：丙烯酸溶液25‑35份、络合剂1‑3份、2‑丙烯酰胺基‑2‑甲基丙磺酸5‑8份、活性保护剂3‑5份、氧化剂2‑4份、过硫酸铵水溶液5‑6份、链转移剂6‑8份、降粘剂2‑4份、催化剂0.05‑0.1份、氢氧化钠溶液3‑6份以及去离子水40‑50份，本发明方法制备的降低混凝土粘度的聚羧酸减水剂配成粉末后性能稳定，运输方便，本发明减水剂的混凝土和易性良好，并且不影响混凝土的凝结时间、强度等其它性能，通过配方及聚合工艺的设计，制备的聚羧酸减水剂粉体，制作工艺简单，可以广泛应用于泵送混凝土及砂浆领域。
Polycarboxylate superplasticizer for reducing viscosity of concrete and preparation method thereof
一种降低混凝土粘度的聚羧酸减水剂及其制备方法
JIA WANLI (Autor:in) / LI BAOHUA (Autor:in) / DONG YI (Autor:in) / ZHOU SHANG (Autor:in)
21.09.2021
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2022
High-performance viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2023
Anti-mud viscosity-reducing polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2022