Cov khoom lag luam vitamin yog txhua yam muab los ntawm cov paj rwb ntuj lossis ntoo pulp, uas yog tsim los ntawm etherification. Cov khoom sib txawv ntawm cov cellulose siv cov khoom sib txawv etherifying. Tus neeg sawv cev etherifying siv hauv hydroxyethyl cellulose (HEC) yog ethylene oxide, thiab tus neeg sawv cev etherifying siv hauv hydroxypropyl methylcellulose (HPMC) yog lwm hom etherifying agents. (chloromethane thiab propylene oxide).
Hauv cov xim szone tiag tiag thiab cov xim latex, hydroxyethyl cellulose tuaj yeem siv los ua cov thickener.
Cov xim pob zeb tiag tiag yog ib qho yooj yim los nag vim nws qhov loj ntawm cov khoom sib sau thiab qhov tshwj xeeb loj. Nws yog ib qho tsim nyog yuav tsum tau ntxiv cov thickener kom nws cov viscosity kom tau raws li cov viscosity xav tau rau kev txau thaum siv, txhim kho nws cov khoom ruaj khov, thiab ua tiav qee lub zog.
Yog tias koj xav tau cov xim pob zeb tiag tiag kom ua tiav lub zog zoo, dej tsis kam thiab huab cua tsis kam, kev xaiv cov khoom siv raw thiab cov qauv tsim yog qhov tseem ceeb heev.
Nyob rau hauv ib txwm muaj xwm txheej, tus nqi ntawm emulsion siv hauv cov xim zoo nkauj tiag tiag yuav yog qhov siab.
Piv txwv li, hauv ib tuj ntawm cov xim pob zeb tiag tiag, tej zaum yuav muaj 300kg ntawm ntshiab acrylic emulsion thiab 650kg ntawm ntuj xim pob zeb xuab zeb. Thaum cov ntsiab lus ntawm emulsion yog 50%, qhov ntim ntawm 300kg ntawm emulsion tom qab ziab yog hais txog 150 litres, thiab lub ntim ntawm 650kg ntawm xuab zeb yog hais txog 228 litres. Qhov ntawd yog hais tias, PVC (pigment ntim concentration) ntawm cov xim pob zeb tiag tiag yog 60% ntawm lub sijhawm no, vim hais tias cov xim ntawm cov xuab zeb yog cov loj thiab tsis sib xws, thiab nyob rau hauv cov xwm txheej ntawm ib qho me me me me, cov ziab qhuav. cov xim pob zeb tiag tiag tuaj yeem yog nyob rau hauv CPVC (qhov tseem ceeb ntawm cov khoom loj). Pigment volume concentration) approx. Raws li cov thickener muaj kev txhawj xeeb, yog tias koj xaiv cellulose nrog qhov tsim nyog viscosity, cov xim pob zeb tiag tiag tuaj yeem tsim cov xim pleev xim ua tiav thiab ntom ntom kom ua tau raws li peb qhov kev ua tau zoo ntawm cov xim pob zeb tiag tiag. Yog tias cov ntsiab lus ntawm cov xim pob zeb tiag tiag emulsion tsawg, nws raug nquahu kom siv cov cellulose nrog cov viscosity ntau dua li cov thickener (xws li 100,000 viscosity), tshwj xeeb tshaj yog tom qab tus nqi ntawm cellulose nce, uas tuaj yeem txo cov cellulose siv thiab ua rau cov viscosity. pob zeb tiag Qhov kev ua tau zoo ntawm cov xim zoo dua.
Qee cov lag luam lag luam tiag tiag cov xim pleev xim siv hydroxypropyl methylcellulose es tsis txhob hydroxyethyl cellulose rau nqi thiab lwm yam.
Piv nrog rau ob hom cellulose, hydroxyethyl cellulose muaj dej tuav tau zoo dua, yuav tsis poob dej tuav vim gelatin ntawm qhov kub thiab txias, thiab muaj qee yam mildew kuj. Rau kev txiav txim siab txog kev ua haujlwm, nws raug pom zoo kom siv hydroxyethyl cellulose nrog viscosity ntawm 100,000 ua cov thickener rau cov xim pob zeb tiag.
Post lub sij hawm: Apr-28-2023