Research on preparation of the quaternary polycarboxylic water-reducing agent MPEGMAA-SAS-MAH-AMPS
SONG Jin
WU Fenglong
SHUANG Xi
HE Naiguang
XU Kangning
Abstract：MPEGMAA-SAS-MAH-AMPS Polyether-type cement water reducing agent was synthesized using MPEGMAA600,SAS,MAH and AMPS as raw material,and using ammonium persulfate-sodium thiosulfate as initiator.The optimum conditions of preparing water reducing agent by orthogonal experiment were obtained as follows:MPEGMAA600/SAS/MAH/AMPS mole ratio of 1.0∶0.3 ∶1.0 ∶0.4,the amount of ammonium persulfate sodium thiosulfate,the initiator system,was 0.4％ according to the mass of monomers,the reaction time is 4 h and the reaction temperature is 50 ℃.Under the optimum synthetic conditions,the percentage of conversion is 93.67％.Fourer-Transform Infrared Spectroscopy and gel permeation chromatography test results show that the water reducing agent chain segment containing carboxyl,amino sulfonic acid,ether bond and other functional groups.The average relative molecular mass distribution and peak mostly focus on between 10 000 and 14 000.
Keywords：polycarboxylatewater-reducersynthesis
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 52-55,59 )