A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-water-reducing and high-slump-retaining type polycarboxylic acid water reducing agent and preparation method thereof
The invention discloses a high-water-reduction and high-slump-loss-resistant polycarboxylic acid water reducer and a preparation method thereof, belongs to the technical field of water reducers, and solves the problems of poor early strength, water reducing performance and slump-loss-resistant performance of the existing polycarboxylic acid water reducer, the high-water-reduction and high-slump-loss-resistant polycarboxylic acid water reducer comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer and polyacetylene acrylate, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the polyacetylene acrylate is 1: (1-4): (0.1-1), the polyacetylene acrylate is an acrylate-terminated polyphenylacetylene chain, and the molecular weight is 500-3000. Adsorption of cement to the water reducing agent is improved, dispersion and dispersion maintaining performance of the water reducing agent are improved, and the water reducing agent has the advantages of being low in sensitivity, improving strength, water reducing rate and slump retaining performance and the like in concrete and is good in adaptability to various materials.
本发明公开了一种高减水高保坍型聚羧酸减水剂及其制备方法，属于减水剂技术领域，解决了现有聚羧酸减水剂早期强度、减水性能以及保坍性能较差的问题，包括不饱和聚醚大单体、不饱和羧酸单体和聚炔类丙烯酸酯，所述不饱和聚醚大单体、不饱和羧酸单体和聚炔类丙烯酸酯的摩尔比为1：1‑4：0.1‑1，所述聚炔类丙烯酸酯为丙烯酸酯封端的聚苯乙炔链，分子量为500‑3000。本发明提高了水泥对减水剂的吸附，增加了减水剂的分散和分散保持性能，在混凝土中表现出低敏感性、提高强度、减水率、保坍性能等特点，对于各种材料的适应性较好。
High-water-reducing and high-slump-retaining type polycarboxylic acid water reducing agent and preparation method thereof
The invention discloses a high-water-reduction and high-slump-loss-resistant polycarboxylic acid water reducer and a preparation method thereof, belongs to the technical field of water reducers, and solves the problems of poor early strength, water reducing performance and slump-loss-resistant performance of the existing polycarboxylic acid water reducer, the high-water-reduction and high-slump-loss-resistant polycarboxylic acid water reducer comprises an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer and polyacetylene acrylate, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the polyacetylene acrylate is 1: (1-4): (0.1-1), the polyacetylene acrylate is an acrylate-terminated polyphenylacetylene chain, and the molecular weight is 500-3000. Adsorption of cement to the water reducing agent is improved, dispersion and dispersion maintaining performance of the water reducing agent are improved, and the water reducing agent has the advantages of being low in sensitivity, improving strength, water reducing rate and slump retaining performance and the like in concrete and is good in adaptability to various materials.
本发明公开了一种高减水高保坍型聚羧酸减水剂及其制备方法，属于减水剂技术领域，解决了现有聚羧酸减水剂早期强度、减水性能以及保坍性能较差的问题，包括不饱和聚醚大单体、不饱和羧酸单体和聚炔类丙烯酸酯，所述不饱和聚醚大单体、不饱和羧酸单体和聚炔类丙烯酸酯的摩尔比为1：1‑4：0.1‑1，所述聚炔类丙烯酸酯为丙烯酸酯封端的聚苯乙炔链，分子量为500‑3000。本发明提高了水泥对减水剂的吸附，增加了减水剂的分散和分散保持性能，在混凝土中表现出低敏感性、提高强度、减水率、保坍性能等特点，对于各种材料的适应性较好。
High-water-reducing and high-slump-retaining type polycarboxylic acid water reducing agent and preparation method thereof
一种高减水高保坍型聚羧酸减水剂及其制备方法
WANG SHAOFENG (author) / BI YAO (author) / SHANG JIAQI (author) / YAN SHENGDONG (author) / FU LING (author) / YE HAIYAN (author) / CHEN JIN (author) / DONG RUI (author) / CHEN JIANWEI (author) / XU SHUKUI (author)
2024-02-02
Patent
Electronic Resource
Chinese
| European Patent Office | 2022
Slump-retaining polycarboxylic acid water reducing agent and preparation method thereof
| European Patent Office | 2022
| European Patent Office | 2021
| European Patent Office | 2015