Txog tam sim no, tseem tsis tau muaj daim ntawv qhia txog qhov cuam tshuam ntawm txoj kev ntxiv hydroxyethyl cellulose rau ntawm lub tshuab pleev xim latex. Los ntawm kev tshawb fawb, pom tau tias qhov ntxiv hydroxyethyl cellulose rau hauv lub tshuab pleev xim latex txawv, thiab kev ua tau zoo ntawm cov xim latex uas tau npaj tseg txawv heev. Hauv qhov xwm txheej ntawm tib qho kev ntxiv, txoj kev ntxiv txawv, thiab qhov viscosity ntawm cov xim latex uas tau npaj tseg txawv. Tsis tas li ntawd, txoj kev ntxiv hydroxyethyl cellulose kuj muaj qhov cuam tshuam pom tseeb heev rau kev ruaj khov ntawm cov xim latex.
Txoj kev ntxiv hydroxyethyl cellulose rau hauv cov xim latex txiav txim siab nws lub xeev dispersion hauv cov xim, thiab lub xeev ntawm dispersion yog ib qho ntawm cov yuam sij rau nws cov nyhuv thickening. Los ntawm kev tshawb fawb, nws pom tias hydroxyethyl cellulose ntxiv rau hauv theem dispersion tau teeb tsa raws li kev txiav txim siab nyob rau hauv qhov kev ua ntawm high shear, thiab nws yooj yim rau swb ib leeg, thiab cov qauv sib tshooj thiab intertwined spatial network raug rhuav tshem, yog li txo qhov thickening efficiency. Cov tshuaj nplaum HEC ntxiv rau hauv theem let-down muaj kev puas tsuaj me me rau qhov chaw network qauv thaum lub sijhawm qeeb qeeb stirring, thiab nws cov nyhuv thickening yog tag nrho reflected, thiab cov qauv network no kuj tseem muaj txiaj ntsig zoo los xyuas kom meej qhov ruaj khov ntawm cov xim latex. Hauv kev xaus, qhov ntxiv hydroxyethyl cellulose HEC hauv theem let-down ntawm cov xim latex yog qhov zoo dua rau nws cov thickening efficiency siab thiab kev ruaj khov cia siab.
Cov tshuaj cellulosic thickeners yeej ib txwm yog ib qho ntawm cov khoom siv rheological tseem ceeb tshaj plaws rau cov xim latex, ntawm cov uas hydroxyethyl cellulose (HEC) yog qhov siv dav tshaj plaws. Raws li ntau cov ntawv tshaj tawm, cov tshuaj cellulose thickeners muaj cov txiaj ntsig zoo li nram no: kev ua haujlwm siab thickening, kev sib raug zoo zoo, kev ruaj khov cia siab, kev tiv thaiv sag zoo heev, thiab lwm yam. Txoj kev ntxiv ntawm hydroxyethyl cellulose hauv kev tsim cov xim latex yog qhov yooj ywm, thiab cov txheej txheem ntxiv ntau dua yog raws li nram no:
01. Ntxiv nws thaum lub sijhawm pulping kom ua rau cov slurry viscosity nce ntxiv, yog li pab txhim kho qhov kev ua haujlwm dispersion;
02. Npaj ib daim nplaum nplaum thiab ntxiv rau thaum sib tov cov xim kom ua tiav lub hom phiaj ntawm kev ua kom tuab.
Lub sijhawm tshaj tawm: Plaub Hlis-25-2023