Txog tam sim no, tsis muaj kev tshaj tawm txog cov nyhuv ntawm cov txheej txheem ntxiv ntawm hydroxyethyl cellulose ntawm cov xim pleev xim rau ntawm daim yas xim. Los ntawm kev tshawb fawb, nws pom tias qhov sib ntxiv ntawm hydroxyethyl cellulose hauv cov xim pleev xim yas yog txawv, thiab kev ua tau zoo ntawm npaj txhij cov xim zoo li txawv. Nyob rau hauv rooj plaub ntawm tib qho ntxiv, ntxiv ib txoj kev sib txawv, thiab viscosity ntawm npaj txhij cov xim looj cov xim zoo sib txawv. Ib qho ntxiv, ntxiv txoj kev sib ntxiv ntawm cov xov tooj ntawm hydroxyethyl tseem muaj qhov cuam tshuam tseeb heev ntawm kev ruaj ntseg ntawm cov xim huv.
Txoj kev ntawm kev ntxiv hydroxyethyl cellulose hauv looj tshuaj txiav txim rau nws cov kev sib cais hauv cov xim, thiab lub xeev ntawm dispersion yog ib qho ntawm cov yuam sij rau nws cov nyhuv thickening. Through the research, it is found that the hydroxyethyl cellulose added in the dispersion stage is arranged in an orderly manner under the action of high shear, and it is easy to slide each other, and the overlapping and intertwined spatial network structure is destroyed, thereby Txo cov tuab tuab. Cov tshuaj txhuam Hec ntxiv rau hauv theem tso cai muaj qhov kev puas tsuaj loj heev rau cov qauv network thaum muaj txiaj ntsig zoo rau cov kev cia khoom ruaj khov ntawm cov xim pleev xim yas. Hauv cov ntsiab lus, ntxiv ntawm hydroxyethyl cellulose HEC hauv kev pleev xim ntawm Lowx yog ntau dua cov xim ua kom zoo thiab muaj kev ruaj khov ruaj khov.
Cellulosic thickeners yeej ib txwm yog ib qho tseem ceeb tshaj plaws rheological ntxiv rau cov xim av looj, hydroxyethyl cellulose (HEC) yog qhov feem ntau dav siv. Raws li cov ntaub ntawv ntau, cellule thickeners muaj cov txiaj ntsig hauv qab no: kev sib zog ua kom zoo, qhov siab ruaj khov, thiab cov khoom zoo li qub. Qhov kev sib ntxiv ntawm hydroxyethyl cellulose hauv kev tsim cov xim zoo nkauj yog hloov tau, thiab cov qauv ntau ntxiv yog li hauv qab no:
01. Ntxiv nws thaum lub sij hawm pulping kom nce viscosity ntawm slurry, yog li pab txhawm rau txhim kho kev rho tawm effersion;
02. Npaj cov tshuaj pleev ib ce thiab ntxiv rau thaum sib tov cov xim kom ua tiav lub hom phiaj ntawm thickening.
Lub Sijhawm Post: Apr-25-2023