Kev Kho Kom Zoo Dua Cov Kev Hloov Kho Ntawm Cov Polycarboxylate Superplasticizer Rau Txoj Kev Txhim Kho Ntawm Dispersing Kev Ua Tau Zoo Hauv Maas Muab Tshuaj Txhuam

Cov lus tseem ceeb

• PCE lwg me me nrog nraub qaum ntau dua tuaj nthuav tawm cov khoom muaj zog dua adsorption.

  
  

• Kev hloov pauv ntawm PCE caj qaum methyl pawg cov ntsiab lus pab qhib qhov kev daws ntawm kev daws teeb meem.

  
  

• Kho lub siab txhav thiab hydrophobicity yog lub tswv yim tshiab los kho qhov muaj peev xwm dispersing.

Abstract

Ob pawg ntawm cov sib txuas zoo li polycarboxylate ether (PCE) polymers tau tsim los ntawm aqueous dawb radical polymerization los ntawm cov kua qaub (AA), methacrylic acid (MAA), thiab poly (ethylene glycol) monomethyl ether methacrylate. Cov kev hloov pauv ntawm cov monomer sib piv tau ua kom lub qhov sib hloov ntawm cov ntsiab lus ntawm methyl pawg hloov ntawm cov pob txha polymer rov qab thiab yog li ntawd lub caj qaum txhav txhav thiab hydrophobicity. Raws li pom hais tias los ntawm kev sim ua cov kev qoj ib ce (COMPASS force field), txoj kev daws teeb meem kev sib txawv yog muab tau los ntawm caj qaum pob txha caj qaum pawg. PCE muaj cov caj qaum rov qab siab methyl pawg cov ntsiab lus nthuav tawm ntau ntxiv polymer lub nraub qaum hauv cov kua pore vim qhov cuam tshuam kev sib hloov dawb ntawm cov pob txha polymer rov qab thiab ntau pawg carboxylic tuaj yeem nkag tau rau adsorption. Txawm li cas los xij, qhov loj me me tom qab adsorption yuav tsum tau me me dua vim muaj qhov hydrophobicity thiab cuam tshuam kev sib hloov dawb ntawm polymer sab cov saw. Daim ntawv no tau tshaj tawm tias cov txheej txheem adsorption tau cuam tshuam ntau heev nrog kev daws teeb meem ntawm PCE thiab tau muab lub tswv yim tshiab-ua kom haum raws li PCE kev daws teeb meem, rau kev hloov mus ntawm kev ua tau zoo ntawm PCE lwg me me.