Polycarboxylate Superplasticizer PCE is composed of macromolecular compounds with sulfonic acid groups, carboxyl groups, amino groups, and polyoxyethylene side chains, etc., in aqueous solution, through the principle of free radical copolymerization synthesis of polymers with a comb structure Surfactant.

The main raw materials required for the synthesis of Construction chemical Water reducer Polycarboxylate Superplasticier are: methacrylic acid, acrylic acid, ethyl acrylate, hydroxyethyl acrylate, sodium allyl sulfonate, methyl methacrylate, 2-acrylamido- 2-Methacrylic acid, methoxy polyoxyethylene methacrylate, ethoxy polyethylene glycol acrylate, allyl ether, etc. The initiators that can be used in the polymerization process are: persulfate-based initiators , Benzoyl peroxide, azobisisobutyl cyanide; chain transfer agents: 3-mercaptopropionic acid, mercaptoacetic acid, etc.

The polycarboxylic acid water reducing agent synthesis method is: in a round bottom flask equipped with an electric stirrer, a thermometer, a dropping device, and a reflux condenser, the polymerization monomer solution and the initiator solution are slowly added dropwise by the method of heating in a water bath. When selecting the polymerization monomer , The university with its competition rate should be fully considered. The reaction temperature can be determined according to the specific reaction monomer type. Generally, the temperature in the temperature range of 70~95℃ can be selected as the reaction temperature.

Drop the monomer solution within one hour, and then drop it within 20 minutes add the remaining initiator solution, and finally increase the temperature by 5°C, continue the reaction for 1h, and after the temperature is lowered to 40°C, neutralize and discharge.