Synthesis and Characteristics of polyether-type polycarboxylate superplasticizer

According to the principle of structure design,polycarboxylate-type superplasticizer with allyl polyoxyethylene ether was synthesized by free radical copolymerization method.The properties of the samples as dispersants were evaluated and characterized.It was found that polyether-type polycarboylate superplasticizer has high rate of water reduction,good dispersing power,high ability to keep paste fluidity and rapid increase of strength of the hardened cementitious material.The effects on the qualities of polycarboylate superplasticizer such as polymerization conditions,side chain length,chemical composition and molecular structure were also investigated.