Study on the synthesis and properties of highly dispersed and high slump-resistant polycarboxylate superplasticizer

Abstract The first polymer containing phosphate groups was prepared by esterification of polyacrylic acid with polyethylene glycol phosphate. The second polymer was prepared by copolymerizing ethylene glycol monovinyl polyethylene glycol ether with hydroxy butyl phosphate methacrylate and acrylic acid. Then, the first and second polymers were uniformly mixed in proportion to prepare the highly dispersed and high-slump-resistant polycarboxylate superplasticizer (PCE-P). The structure of PCE-P was characterized by infrared spectroscopy (FTIR) gel chromatography (GPC) and concrete experiments. The results show that PCE-P can be used to control the construction performance of high adsorption machine-made sand concrete, and has strong practical value and broad market prospects.