应用化工
應用化工
응용화공
Applied Chemical Industry
2015年
10期
1852-1855
,共4页
马来酸酐%蔗糖%减水剂%作用机理%吸附
馬來痠酐%蔗糖%減水劑%作用機理%吸附
마래산항%자당%감수제%작용궤리%흡부
maleic anhydride%sucrose%superplasticizer%action mechanism%adoption
以过氧化苯甲酰（BPO）为引发剂，对氯甲基苯乙烯、马来酸酐（MAH）为聚合单体，采用非均相聚合方法，合成对氯甲基化苯乙烯-马来酸酐共聚物，并通过与蔗糖反应合成苯乙烯-马来酸酐接枝蔗糖共聚物（SP）。通过红外光谱（FTIR）和核磁共振氢谱（1 H NMR）对减水剂结构进行表征。并以净浆流动度、水泥颗粒表面吸附量和 Zeta 电位为指标，研究了其作用机理。结果表明，SP 能有效地吸附在水泥颗粒表面，改变水泥颗粒表面的电位，使水泥颗粒表面形成双电子层，在静电斥力的作用下，水泥颗粒之间保持稳定，水泥浆体流动性提高。
以過氧化苯甲酰（BPO）為引髮劑，對氯甲基苯乙烯、馬來痠酐（MAH）為聚閤單體，採用非均相聚閤方法，閤成對氯甲基化苯乙烯-馬來痠酐共聚物，併通過與蔗糖反應閤成苯乙烯-馬來痠酐接枝蔗糖共聚物（SP）。通過紅外光譜（FTIR）和覈磁共振氫譜（1 H NMR）對減水劑結構進行錶徵。併以淨漿流動度、水泥顆粒錶麵吸附量和 Zeta 電位為指標，研究瞭其作用機理。結果錶明，SP 能有效地吸附在水泥顆粒錶麵，改變水泥顆粒錶麵的電位，使水泥顆粒錶麵形成雙電子層，在靜電斥力的作用下，水泥顆粒之間保持穩定，水泥漿體流動性提高。
이과양화분갑선（BPO）위인발제，대록갑기분을희、마래산항（MAH）위취합단체，채용비균상취합방법，합성대록갑기화분을희-마래산항공취물，병통과여자당반응합성분을희-마래산항접지자당공취물（SP）。통과홍외광보（FTIR）화핵자공진경보（1 H NMR）대감수제결구진행표정。병이정장류동도、수니과립표면흡부량화 Zeta 전위위지표，연구료기작용궤리。결과표명，SP 능유효지흡부재수니과립표면，개변수니과립표면적전위，사수니과립표면형성쌍전자층，재정전척력적작용하，수니과립지간보지은정，수니장체류동성제고。
A maleate polycarboxylate based superplasticizer(SP)was prepared from sucrose and 1-(chlo-romethyl)-4-ethenyl-benzen-maleic anhydride copolymer(ClSMA)through heterogeneous polymerization with benzoyl peroxide( BPO) as initiator,1-( chloromethyl)-4-ethenyl-benzen and maleic anhydride (MAH)as monomer. The molecular structure was characterized by FTIR and 1 H NMR. The action mech-anism was investigated with initial fluidity,Zeta potential and adsorption as measurement index. The result shows that the mechanism of the SP was mainly owing to that the cement particles adsorbed the SP and SP change the Zeta potential of the surface of cement particle. The electric double layer was formed on the surface of the cement particles. It made cement particles remain stable and improved the fluidity of cement paste,which the action of electrostatic repulsion between different cement particles.
