▎ 摘　　要

NOVELTY - Concrete water reducing agent, comprises graphene-modified polyether, hydrogen peroxide, deionized water, component A and component B, where the preparation method of graphene modified polyether comprises adding modified graphene, isopentenol polyoxyethylene ether, deionized water in the reactor, controlling the temperature of the reactor at 35-45degrees Celsius, turning on stirring, reacting after 3-5 hours and discharging, filtering, drying to obtain the graphene-modified polyether and the preparation method of described modified graphene is adding N,N-dimethylformamide, graphene oxide, 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide and N-Hydroxyphthalimide in reactor, controlling the reactor temperature at 35-45 degrees Celsius, carrying out ultrasonic dispersion for 2-3 hours, centrifuging for 10-15 minutes, removing supernatant to obtain the modified grapheme, where component A contains acrylic acid and deionized water, and B component contains ascorbic acid, mercapto acid and deionized water. USE - Used as concrete water reducing agent. ADVANTAGE - The water reducing agent can improve the fluidity of the cement slurry, improve the rheological property of the cement-based material, and improve the mechanical property after curing. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing water reducing agent comprising adding the graphene-modified polyether and hydrogen peroxide into the reactor, starting the stirring, controlling the temperature of the reactor at 35-40degrees C, and adding component A and the component B dropwise to the reactor after stirring evenly, dropping, maintaining for 1-1.5 hours, cooling to room temperature, adding sodium hydroxide solution to adjust the pH value of the reaction product to 7 to obtain the water reducing agent.