Synthesis and properties study of viscosity-reducing polycarboxylate superplasticizer
ZUO Guolei
WEI Bi
JIANG Zaixiong
CAO Yang
Abstract：Viscosity-reducing polycarboxylate superplasticizer was synthesized using polyether macromonome,acrylic acid(AA),methacrylic acid(MAA),and mercaptopropionic acid(MPA)as the main raw materials,and hydrogen peroxide-E51 as Redox initia-tion system.The effects of molecular mass and structure of polyether macromonome(Such as EPEG3000,EPEG1200,TPEG1200 and so on),acid-ether ratio,MPA dosage,and MAA percentage on the properties of synthetic water reducing agents were investigated.The results indicate that under the reaction temperature of 10～15℃,when n(EPEG1200)∶n(EPEG3000)=2.0,with an acid-to-ether ratio of 3.6,MPA accounting for 0.4%of the macromonomer mass,and n(MAA)∶n(AA)=2.0,the synthesized viscosity-reducing poly-carboxylate superplasticizer JN-2405 exhibited optimal performance.When applied to high-performance concrete,it demonstrated more pronounced viscosity-reducing effects at lower dosages compared to the commercially available viscosity-reducing polycarboxy-late superplasticizer JN-1.
Keywords：viscosity-reducing typepolycarboxylate superplasticizersynthesishigh performance concrete
Publication Date：2025-11-25
Online Publishing Date：2025-12-15(First online date of this platform, not the publication date of the document)
Pages：4( 77-80 )