▎ 摘　　要

NOVELTY - Low air entraining retarding type polycarboxylic acid water reducing agent comprises 0.5-1.2 pts. wt. macromonomer, 0.1-0.3 pts. wt. acrylic acid, 0.05-0.2 pts. wt. sodium methallyl sulfonate, 0.01-0.035 pts. wt. 2-hydroxyethyl methacrylate phosphate, 0.002-0.005 pts. wt. silane-modified graphene, 0.00015-0.0002 pts. wt. ammonium persulfate, 0.0001-0.0002 pts. wt. neutralizing agent, and 3-6 pts. wt. water. USE - Used as low air entraining retarding type polycarboxylic acid water reducing agent. ADVANTAGE - The water reducing agent: has better binding effect between materials. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the low air entraining retarding type polycarboxylic acid water reducing agent comprising (1) taking raw materials, dissolving the macromonomer in water to obtain aqueous solution-A, dissolving acrylic acid, sodium methallyl sulfonate, 2-hydroxyethyl methacrylate phosphate and silane-modified graphene in water to obtain aqueous solution-B, and dissolving ammonium persulfate in water to obtain aqueous solution-C; (2) adding aqueous solution-A, aqueous solution-B and aqueous solution-C to the container in sequence, heating to 75-85 degrees C, and continuously stirring for 6-7 hours; and (3) after the stirring, cooling to 30-40 degrees C, adding the neutralizer to adjust the solution to pH 5.