Txog tam sim no, tsis muaj ntawv tshaj tawm txog cov txiaj ntsig ntawm txoj kev sib ntxiv ntawm hydroxyethyl cellulose ntawm cov xim latex. Los ntawm kev tshawb fawb, nws pom tau hais tias qhov sib ntxiv ntawm hydroxyethyl cellulose nyob rau hauv lub latex xim system yog txawv, thiab kev ua tau zoo ntawm cov npaj latex xim yog txawv heev. Nyob rau hauv cov ntaub ntawv ntawm tib qhov sib ntxiv, txoj kev sib ntxiv yog txawv, thiab cov viscosity ntawm cov xim latex npaj sib txawv. Tsis tas li ntawd, txoj kev sib ntxiv ntawm hydroxyethyl cellulose kuj tseem muaj txiaj ntsig zoo rau kev khaws cia ntawm cov xim latex.
Txoj kev ntxiv hydroxyethyl cellulose hauv cov xim latex txiav txim siab nws lub xeev dispersion nyob rau hauv cov xim, thiab lub xeev ntawm dispersion yog ib tug ntawm cov yuam sij rau nws thickening nyhuv. Los ntawm kev tshawb fawb, nws pom tau hais tias hydroxyethyl cellulose ntxiv nyob rau hauv lub dispersion theem yog teem nyob rau hauv ib qho kev txiav txim nyob rau hauv kev txiav txim siab shear, thiab nws yog ib qho yooj yim rau swb ib leeg, thiab cov overlapping thiab intertwined spatial network qauv raug puas tsuaj, yog li ntawd. txo cov thickening efficiency. Kev muab tshuaj HEC ntxiv rau hauv theem cia-down muaj qhov kev puas tsuaj me me rau qhov chaw network qauv thaum lub sijhawm ua haujlwm qis qis, thiab nws cov nyhuv thickening tau tshwm sim tag nrho, thiab cov qauv network no kuj muaj txiaj ntsig zoo los xyuas kom muaj kev ruaj ntseg cia ntawm cov xim latex. Nyob rau hauv cov ntsiab lus, qhov sib ntxiv ntawm hydroxyethyl cellulose HEC nyob rau hauv lub cia-down theem ntawm latex xim yog ntau conducive rau nws siab thickening efficiency thiab siab cia stability.
Cellulosic thickeners yeej ib txwm yog ib qho tseem ceeb tshaj plaws rheological additives rau latex xim, ntawm cov hydroxyethyl cellulose (HEC) yog siv dav tshaj plaws. Raws li ntau cov ntaub ntawv qhia, cellulose thickeners muaj qhov zoo hauv qab no: siab thickening efficiency, zoo compatibility, siab cia stability, zoo heev sag kuj, thiab lwm yam. Txoj kev sib ntxiv ntawm hydroxyethyl cellulose hauv kev tsim cov xim latex yog hloov tau, thiab ntau txoj kev sib ntxiv yog raws li hauv qab no:
01. Ntxiv nws thaum lub sij hawm pulping kom viscosity ntawm slurry, yog li pab txhim kho cov dispersion efficiency;
02. Npaj ib qho viscous muab tshuaj txhuam thiab ntxiv nws thaum sib tov cov xim kom ua tiav lub hom phiaj ntawm thickening.
Post lub sij hawm: Apr-25-2023