A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Polycarboxylate superplasticizer mother liquor and preparation method thereof
The invention provides polycarboxylate superplasticizer mother liquor and a preparation method thereof. The polycarboxylate superplasticizer mother liquor is prepared by mixing and heating to react a polyether macromonomer with water, an initiator, a chain transfer agent and crylic acid, and adding an alkaline solution to neutralize the pH value to 6-7, wherein the polyether macromonomer is a terminal hydroxyl esterified polyether macromonomer and is prepared by carrying out an esterification reaction on the terminal hydroxyl of the polyether macromonomer and the carboxyl of macromolecular carboxylic acid. The polycarboxylate superplasticizer mother liquor provided by the invention adopts the terminal hydroxyl esterified polyether macromonomer as the raw material, and the terminal hydroxyl esterified polyether macromonomer is obtained by using the macromolecular carboxylic acid as the capping group of the polyether macromonomer, so that the physical size of the tail end of a side chain is greatly increased, then the physical size of the tail end of the side chain of the polycarboxylate superplasticizer mother liquor synthesized by the polyether macromonomer is greatly increased, and thus the polycarboxylate superplasticizer mother liquor is unlikely to insert in a stratified structure of clay so as to achieve a mud resistant effect. Then, the working performance of concrete is ensured.
Polycarboxylate superplasticizer mother liquor and preparation method thereof
The invention provides polycarboxylate superplasticizer mother liquor and a preparation method thereof. The polycarboxylate superplasticizer mother liquor is prepared by mixing and heating to react a polyether macromonomer with water, an initiator, a chain transfer agent and crylic acid, and adding an alkaline solution to neutralize the pH value to 6-7, wherein the polyether macromonomer is a terminal hydroxyl esterified polyether macromonomer and is prepared by carrying out an esterification reaction on the terminal hydroxyl of the polyether macromonomer and the carboxyl of macromolecular carboxylic acid. The polycarboxylate superplasticizer mother liquor provided by the invention adopts the terminal hydroxyl esterified polyether macromonomer as the raw material, and the terminal hydroxyl esterified polyether macromonomer is obtained by using the macromolecular carboxylic acid as the capping group of the polyether macromonomer, so that the physical size of the tail end of a side chain is greatly increased, then the physical size of the tail end of the side chain of the polycarboxylate superplasticizer mother liquor synthesized by the polyether macromonomer is greatly increased, and thus the polycarboxylate superplasticizer mother liquor is unlikely to insert in a stratified structure of clay so as to achieve a mud resistant effect. Then, the working performance of concrete is ensured.
Polycarboxylate superplasticizer mother liquor and preparation method thereof
XU YILUN (author) / DAN WEI (author) / LYU HONGYU (author)
2015-06-17
Patent
Electronic Resource
English
Polycarboxylate superplasticizer mother liquor and preparation method thereof
| European Patent Office | 2023
Polycarboxylate superplasticizer mother liquor and preparation method thereof
| European Patent Office | 2023
| European Patent Office | 2020
| European Patent Office | 2020
| European Patent Office | 2022