Research and application of slump-loss resistance polycarboxylate superplasticizer powder by bulk polymerization
PANG Lufeng
ZHOU Zaibo
FU Peng
SUN Huaqiang
Abstract：A new slump-loss resistance polycarboxylate superplasticizer powder(BTC)was prepared taking TPEG-2400 as monomers,acrylic acid,acrylate as raw materials,in the role of oil-soluble initiator by the method of bulk polymerization. Adopting orthogonal test studied the effects of reaction temperature,amount of initiator and amount of chain transfer agent and the effect of different feeding methods,and adopting single factor variable experiment explored effect of different mole ratio of acrylic and acry-late and its stirring speed on product performance,determined the optimal process finally. The BTC powder can obviously improve the mobility of the mortar to maintain capacity significantly,and has a good cement adaptability. BTC powder has been success-fully applied in the grouting material,pressure slurry and other mortar products.
Keywords：bulk polymerizationslump-loss resistancepolycarboxylate superplasticizer powder
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 47-50,58 )