High-suitability water-retention polycarboxylic acid high-performance water reducing agent and preparation method thereof

The invention discloses a high-adaptability water-retention polycarboxylic acid high-performance water reducing agent and a preparation method thereof.The preparation method comprises the steps that firstly, glucose and 2-amino-4-methyl-5-phospho-3-pentenoic acid are subjected to an esterification reaction, and glucose ester is obtained; adding glucose ester, methyl allyl polyoxyethylene ether, cyclodextrin grafted maleic anhydride, modified starch ether, hydroxypropyl methyl cellulose ether and polyacrylamide into water, and uniformly stirring and mixing to obtain a premixed solution; and slowly dropwise adding the premixed solution, the initiator aqueous solution and the polysorbate aqueous solution into water at a constant speed, carrying out a first stirring reaction, adding the polyhydroxy phosphate, carrying out a second stirring reaction, and adjusting the pH value to 7. The water reducing agent is good in adaptability, especially can be used for preparing artificial sand concrete, is good in water ret