Pleev xim, ib txwm hu xim hauv Suav teb. Lub npe hu ua coating yog coated nyob rau ntawm qhov khoom kom muaj kev tiv thaiv lossis dai kom zoo nkauj, thiab tuaj yeem tsim cov yeeb yaj kiab txuas ntxiv uas tau muab tso rau hauv cov khoom kom sib xyaw.
Dab tsi yog hydroxyethyl cellulose?
Hydroxyethyl cellulose (HEC), lub teeb daj lossis lub teeb tsis zoo, npaj los ntawm lub cev nqaij daim tawv nqaij lossis cov genus tsis muaj kev hais txog cellulose soluble cellulose neeg hais txog. Vim tias HEC muaj cov yam ntxwv zoo ntawm thickening, kev sib cais, kev tsim kho hauv cov roj av, kev tsim kho thiab khoom noj, cov ntawv nyeem, cov ntawv nyeem, papermaking thiab polymers. Polymerization thiab lwm thaj teb.
Yuav muaj dab tsi tshwm sim thaum hydroxyethyl cellulose tau raws li cov txheej txheem dej ua ke?
Raws li cov tsis yog-ionic surfactant, hydroxyethyl cellulose muaj cov khoom siv hauv qab no ntxiv rau, kev sib tw, cov dej ua ke thiab muab cov tshuaj tiv thaiv kab mob:
HEC yog soluble nyob rau hauv dej kub lossis dej txias, thiab tsis precipitate ntawm qhov kub lossis rhaub, ua nws muaj ntau yam ntawm solubility thiab viscosity birming;
Lub peev xwm kav dej ua haujlwm yog ob zaug ntawm methyl cellulose, thiab nws tau ntws zoo dua ntws cov cai;
Piv nrog lees paub methyl cellulose thiab hydroxypropal methylropy cellulose, lub zog impersing ntawm HEC yog qhov phem tshaj, tab sis kev tiv thaiv kev tiv thaiv kev muaj peev xwm yog qhov muaj zog tshaj;
Nws tsis yog-ionic thiab tuaj yeem ua ke nrog ntau yam ntawm lwm cov dej-soluble polymers, solfactants, thiab ntsev. Nws yog ib qho zoo tshaj plaws colloidal thickener rau cov kev txhim kho hluav taws xob hluav taws xob.
Yuav ua li cas siv hydroxyethyl cellulose? Yuav ua li cas ntxiv nws?
Ntxiv ncaj qha rau lub sijhawm ntawm kev tsim khoom - cov qauv no yog qhov yooj yim tshaj plaws thiab siv sijhawm tsawg dua.
Ntxiv cov dej huv rau lub vat nruab nrog lub siab-txiab blender. Pib nplawm txuas ntxiv ntawm qhov nrawm nrawm thiab maj mam sift lub hydroxyethyl cellulose ensy rau hauv kev daws. Txuas ntxiv nplawm kom txog thaum txhua qhov sib xyaw ua kom dhau los. Tom qab ntawd ntxiv cov tshuaj tiv thaiv thiab ntau yam ntxiv. Xws li pigments, dispersing cov pab, ammonia dej, thiab lwm yam kom txog thaum tag nrho cov tshuaj hauv cov mis los ua kom muaj cov tshuaj tiv thaiv.
Nruab nrog niam cawv.
Nws yog npaj ib tus niam haus cawv uas muaj ntau dua siab ua ntej, thiab tom qab ntawd ntxiv rau cov khoom. Qhov zoo dua ntawm hom no yog tias nws muaj peev xwm ntxiv tau ncaj qha ntxiv rau cov khoom tiav, tab sis nws yuav tsum khaws cia kom zoo. Cov kauj ruam ntawm hom no zoo ib yam li feem ntau ntawm cov theem hauv txoj kev 1; Qhov sib txawv yog tias tsis tas yuav muaj lub siab-shear agitator, thiab tsuas yog qee cov neeg tsis taus los khaws cov tshuaj hydroxyethyl celluled celluled celluled celluled kom txog thaum yaj mus rau hauv kev daws teeb meem. Txawm li cas los xij, nws yuav tsum raug sau tseg tias tus neeg sawv cev tiv thaiv kab mob yuav tsum tau ntxiv rau niam cawv niam thaum sai li sai tau.
Txij li thaum lub ntsej muag zoo hydroxyethyl cellulose yog cov hmoov lossis fandong Heda ua rau koj nco ntsoov ua kom tau cov ntsiab lus hauv qab no thaum npaj cov khoom noj hydroxyethyl
(1) Ua ntej thiab tom qab ntxiv hydroxyethyl cellulose, nws yuav tsum cia ua stirulose kom txog thaum cov kev daws teeb meem tau meej thiab meej.
(2) Nws yuav tsum maj mam siled rau hauv kev sib xyaw ua ke, thiab tsis txhob txuas ncaj qha rau hauv hydroxyethyl cellulose rau hauv cov khoom sib xyaw lossis hauv daim ntawv ntawm cov lumps thiab cov pob.
(3) Cov dej kub thiab tus nqi ntawm cov dej muaj kev sib raug zoo ntawm hydroxyethyl cellulose, yog li tshwj xeeb saib yuav tsum tau them rau nws.
(4) Tsis txhob ntxiv qee cov tshuaj alkaline rau cov sib tov ua ntej cov hmoov hydroxyethyl hmoov yog tsau nrog dej. Tsa lub p tsuas yog tom qab ntub dej yuav pab tau los ntawm kev sib cais.
(5) kom deb li deb tau, ntxiv cov antifungal neeg sawv cev ua ntej.
(6) Thaum siv cov viscosy hydroxyethyl cellulose, lub concentration ntawm niam cawv yuav tsum tsis txhob siab dua 2.5-3% (los ntawm qhov hnyav), tsis li ntawm tus niam cawv yog qhov nyuaj rau lis.
Lub Sijhawm Post: Feb-20-2025