This article studies the synthesis of slump retaining functional monomer HEA and EPEG to prepare slump retaining polycarboxylate superplasticizer,and clarifies its optimal synthesis conditions.The results showed that the comprehensive performance of the slump retaining polycarboxylate superplasticizer synthesized at room tempera-ture was optimal when the acid ether ratio was 1∶1,the ester ether ratio was 2.5∶1,the hydrogen peroxide dosage was controlled at 0.6%,the sodium hypophosphite dosage was 0.6%,the reducing agent and oxidizing agent dosage ra-tio was 1∶3.
万方数据