| Abstrakt: |
Select 0XHP-703 polyether as macromonomer, acrylic acid,sodium methacrylate,methyl methacrylate, hydroxyethyl acrylate as small monomer, mercaptopropionic acid as chain transfer agent, a high slump retaining solid polycarboxylate superplasticizer GTBT-01 was synthesized by bulk polymerization under the dual-initiator system of potassium persulfate,ascorbic acid and azobisisobutyronitrile. The effects of various factors on the dispersion and slump retention of water-reducing agent were investigated to determine the optimal synthetic conditions. The results show that the product GTBT -01 has a suitable water -reducing rate and slump retention, and has good adaptability to different cements. [ABSTRACT FROM AUTHOR] |
