Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-adaptability slump-retaining polycarboxylate superplasticizer for water-reducing belt and preparation method of slump-retaining polycarboxylate superplasticizer
The invention discloses a slump-retaining polycarboxylic acid water reducing agent with high adaptability for a water reducing belt. The slump-retaining polycarboxylic acid water reducing agent comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer, a phosphorus-containing group functional monomer, an oxidizing agent, a chain transfer agent and a reducing agent, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the phosphorus-containing functional monomer is 1: (2.5-4): (0.1-1), the use amount of the oxidizing agent is 0.3%-0.8% of the total mass of the unsaturated polyether macromonomer, the use amount of the reducing agent is 0.1%-0.5% of the total mass of the unsaturated polyether macromonomer, and the use amount of the chain transfer agent is 0.2%-0.6% of the total mass of the unsaturated polyether macromonomer. The invention also discloses a preparation method of the slump-retaining polycarboxylic acid water reducer for the high-adaptability water reducing belt. The slump-retaining type polycarboxylic acid water reducer with the high-adaptability water reducing belt contains a phosphate group, is low in acid-ether ratio, high in adaptability to cement and gravel materials, high in water reducing rate and good in slump-retaining effect, and has the effects of reducing viscosity and improving slurry for a stone silt system and high-strength concrete.
本发明公开了一种高适应性减水带保坍型聚羧酸减水剂，包括不饱和聚醚大单体、不饱和羧酸单体、含磷基团功能单体、氧化剂、链转移剂以及还原剂；不饱和聚醚大单体、不饱和羧酸单体以及含磷功能单体的摩尔比为1:2.5‑4:0.1‑1，氧化剂的用量为不饱和聚醚大单体总质量的0.3％‑0.8％，还原剂的用量为不饱和聚醚大单体总质量的0.1％‑0.5％，链转移剂的用量为不饱和聚醚大单体总质量的0.2％‑0.6％。本发明还公开了一种高适应性减水带保坍型聚羧酸减水剂的制备方法。本发明的高适应性减水带保坍型聚羧酸减水剂包含磷酸基团，酸醚比低，对水泥、砂石料适应强，减水率高的同时具有较好的保坍作用，针对石粉砂体系及高强混凝土，具有降粘、提浆的作用。
High-adaptability slump-retaining polycarboxylate superplasticizer for water-reducing belt and preparation method of slump-retaining polycarboxylate superplasticizer
The invention discloses a slump-retaining polycarboxylic acid water reducing agent with high adaptability for a water reducing belt. The slump-retaining polycarboxylic acid water reducing agent comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer, a phosphorus-containing group functional monomer, an oxidizing agent, a chain transfer agent and a reducing agent, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the phosphorus-containing functional monomer is 1: (2.5-4): (0.1-1), the use amount of the oxidizing agent is 0.3%-0.8% of the total mass of the unsaturated polyether macromonomer, the use amount of the reducing agent is 0.1%-0.5% of the total mass of the unsaturated polyether macromonomer, and the use amount of the chain transfer agent is 0.2%-0.6% of the total mass of the unsaturated polyether macromonomer. The invention also discloses a preparation method of the slump-retaining polycarboxylic acid water reducer for the high-adaptability water reducing belt. The slump-retaining type polycarboxylic acid water reducer with the high-adaptability water reducing belt contains a phosphate group, is low in acid-ether ratio, high in adaptability to cement and gravel materials, high in water reducing rate and good in slump-retaining effect, and has the effects of reducing viscosity and improving slurry for a stone silt system and high-strength concrete.
本发明公开了一种高适应性减水带保坍型聚羧酸减水剂，包括不饱和聚醚大单体、不饱和羧酸单体、含磷基团功能单体、氧化剂、链转移剂以及还原剂；不饱和聚醚大单体、不饱和羧酸单体以及含磷功能单体的摩尔比为1:2.5‑4:0.1‑1，氧化剂的用量为不饱和聚醚大单体总质量的0.3％‑0.8％，还原剂的用量为不饱和聚醚大单体总质量的0.1％‑0.5％，链转移剂的用量为不饱和聚醚大单体总质量的0.2％‑0.6％。本发明还公开了一种高适应性减水带保坍型聚羧酸减水剂的制备方法。本发明的高适应性减水带保坍型聚羧酸减水剂包含磷酸基团，酸醚比低，对水泥、砂石料适应强，减水率高的同时具有较好的保坍作用，针对石粉砂体系及高强混凝土，具有降粘、提浆的作用。
High-adaptability slump-retaining polycarboxylate superplasticizer for water-reducing belt and preparation method of slump-retaining polycarboxylate superplasticizer
一种高适应性减水带保坍型聚羧酸减水剂及其制备方法
CHEN JING (Autor:in) / LIU WENKANG (Autor:in) / BI YAO (Autor:in) / LIU QIBIN (Autor:in) / WANG SHAOFENG (Autor:in) / HU TENG (Autor:in) / LI DONGLAI (Autor:in) / ZHANG YI (Autor:in) / ZHOU HUI (Autor:in) / SHANG JIAQI (Autor:in)
23.12.2022
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
Preparation method of comprehensive slump-retaining polycarboxylate superplasticizer
| Europäisches Patentamt | 2021
Slump-retaining polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2023
Slump-retaining polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024