A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early-strength polycarboxylic acid water reducer and a preparation method thereof, belongs to the technical field of water reducers, and solves the problems that the existing polycarboxylic acid water reducer is poor in early strength, water reducing performance and slump retaining performance, the early-strength polycarboxylic acid water reducer comprises the following raw materials: an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer and an alkyne monomer with an amide group, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the alkyne monomer with the amide group is 1: (2-4): (0.5-2). The slump retaining agent has a rigid structure and hydrolytic groups at the same time, can greatly improve the slump retaining effect of concrete, has amide groups capable of hydrolyzing amino groups, and can improve the early strength of concrete.
本发明公开了一种早强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，包括以下原料：不饱和聚醚大单体、不饱和羧酸单体和带有酰胺基团的炔单体，所述不饱和聚醚大单体、不饱和羧酸单体和带有酰胺基团的炔单体的摩尔比为1：2‑4：0.5‑2。本发明同时具有刚性结构和水解基团，可大大提高混凝土的保坍效果，同时其具有能够水解出氨基的酰胺基团，还能提高混凝土的早期强度。
Early-strength polycarboxylate superplasticizer and preparation method thereof
The invention discloses an early-strength polycarboxylic acid water reducer and a preparation method thereof, belongs to the technical field of water reducers, and solves the problems that the existing polycarboxylic acid water reducer is poor in early strength, water reducing performance and slump retaining performance, the early-strength polycarboxylic acid water reducer comprises the following raw materials: an unsaturated polyether macromonomer, an unsaturated carboxylic acid monomer and an alkyne monomer with an amide group, the molar ratio of the unsaturated polyether macromonomer to the unsaturated carboxylic acid monomer to the alkyne monomer with the amide group is 1: (2-4): (0.5-2). The slump retaining agent has a rigid structure and hydrolytic groups at the same time, can greatly improve the slump retaining effect of concrete, has amide groups capable of hydrolyzing amino groups, and can improve the early strength of concrete.
本发明公开了一种早强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，包括以下原料：不饱和聚醚大单体、不饱和羧酸单体和带有酰胺基团的炔单体，所述不饱和聚醚大单体、不饱和羧酸单体和带有酰胺基团的炔单体的摩尔比为1：2‑4：0.5‑2。本发明同时具有刚性结构和水解基团，可大大提高混凝土的保坍效果，同时其具有能够水解出氨基的酰胺基团，还能提高混凝土的早期强度。
Early-strength polycarboxylate superplasticizer and preparation method thereof
一种早强型聚羧酸减水剂及其制备方法
BI YAO (author) / SHANG JIAQI (author) / WANG JUN (author) / LIU WENKANG (author) / WANG SHAOFENG (author) / SHAN HAILIN (author) / LIU QIBIN (author) / REN YI (author) / DONG RUI (author) / LU CHAO (author)
2024-02-06
Patent
Electronic Resource
Chinese
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