Dab Tsi Yog Superplasticizers?
Dec 17, 2019
Cov Kws Tshaj Lij Nruab Nrab yog ib hom kab hluav taws xob polymer tshuaj ntxiv siv rau hauv cov cement thiab pob zeb ua kev ua cov tshuab ua kua dej ntau. Qhov no txhais tau yooj yim tias cov neeg tsim khoom plig txo qis cov dej kom tsim nyog los ua cov cement thiab pob zeb ua cov khoom ua haujlwm tau. Qhov tshwm sim yog kev tsim cov dawb-ntws ntub qhob sib xyaw thiab cov khoom ua tiav zoo dua. Tsis tas li ntawd, cov dej ntsiab lus tsawg kuj yuav tsum tau sib tov tsawg dua, yog li txo tus nqi.
Kev hais lus, superplasticizers tuaj hauv plaub lub ntsiab tshuaj lom neeg, txhua yam suav nrog sulfonic acid ua ib feem ntawm cov polymer: polycarboxylate derivatives, sulfonated melamine-formaldehyde condensates (SMF), sulfonated napthalene-formaldehyde condensates (SNF), thiab hloov kho lignosulfonates (MLS) )). Raws li kab polymer, cov superplasticizer tsim kev cuam tshuam ntawm cov nplais thiab cov ntsiab lus dej ntawm qhov sib xyaw los ntawm kev nruab nrab cov ionic nqi ntawm cov cement hais. Thaum qhov no tshwm sim, cov hmoov av ntawm cov cement thiab cov dej sib cais, ua rau cov cement ntws tau ywj pheej nrog cov ntsiab lus dej tsawg dua.
