▎ 摘　　要

NOVELTY - High-absorption dispersion type polycarboxylic acid water reducing agent comprises modified polyether macromonomers, esterified monomers, alkoxysilane monomers, unsaturated acids, graphene oxide solutions, initiators, chain transfer agents and neutralizers. The modified polyether macromonomer is obtained from an unsaturated polyether monomer, an unsaturated carboxylic acid and an aminating agent through free radical polymerization and an amidation reaction. USE - High-absorption dispersion type polycarboxylic acid water reducing agent. ADVANTAGE - The high-absorption dispersion type polycarboxylate water-reducing agent can continuously release carboxyl groups and silicon hydroxyl groups, which has the strongest effect on the adsorption capacity of cement particles. At the same time, it can also promote the formation of a neat and regular microstructure of cement hydration products in the cement stone, making it effective for cement particles. The adsorption is more uniformly dispersed, which significantly improves the performance of concrete. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing the high-absorption dispersion type polycarboxylate water-reducing agent, which involves adding the modified polyether macromonomer, alkoxysilane monomer, unsaturated acid, graphene oxide solution and water into a three-necked flask, after ultrasonic treatment, adding to the reaction device and heating to 50-80 degrees C, stirring to form a monomer mixture solution, adding the esterified monomer, initiator and water to the first dropping device after mixing, adding the chain transfer agent and water to the second dropping device after mixing, adding the solutions in the first dripping device and the second dripping device to the reaction device respectively, and reacting at a constant temperature at 50-80 degrees C, lowering the reaction temperature to room temperature, and then adding neutralizer solution to the reaction device, and adjusting the pH value of mixed solution to 7-8 to obtain the water-reducing agent.