Tsis muaj viscosity cellulose ether (tsis vaculose cellulose ether) yog chav kawm ntawm cov cellulose raws nws cov yam ntxwv viscosity. Cellulose muaj kev hais ua ke tau siv dav siv hauv ntau daim teb. Lawv raug siv los ua cov thickeners, stabilizers, cov nplaum, zaj duab xis tsim, thiab lwm yam hauv ntau daim ntawv thov kev xaiv. Piv nrog cellibosity cellulos neeg muaj kev pab tsis hais dab tsi, tsis muaj vaculos neeg muaj kev pab tsawg hauv kev daws teeb meem, uas ua rau lawv muaj kev zoo hauv cov ntawv thov tshwj xeeb.
1. Cov ntsiab lus yooj yim
Cellulose yog qhov feem ntau cov txiv plig lub ntuj muaj zog tshaj plaws hauv ntiaj teb, muaj cov chav dej qab zib hauv cov phab ntsa cell. Txawm hais tias ntuj cellulose yog insilible hauv dej thiab tsis muaj thermoplastic cell, cellulose muaj kev hais ua lwm tus tuaj yeem tsim los ntawm kev hloov kho tshuaj. Cov hloov kho cellulose derivatives pom txawv solubility thiab kev ua haujlwm hauv ntau cov kuab tshuaj.
Cov neeg hais daws cellulose suav ntau hom, xws li methyl cellulose cellulose (HECC), HydrothProthyl cellwse (HECCC) (Mpaiv nkaus) thiab ntau pua Millipascals ob peb feeb.
2. Cov Txheej Txheem Ntau Lawm
Cellulose raw cov khoom siv: cov ntoo muaj zog siab pulp lossis cov paj ntaub yog siv.
Kev Kho Mob Alkalinization: cellulose yog kho nrog cov alkali (xws li sodium hydroxide) kom nws ntau dua reactive thaum siv tshuaj hloov kho.
ETherification tiv thaiv: Cov lus qhia ntawm cov neeg sawv cev ntawm methhaming (ethylene golecules kom hnov mob molecules kom pom cov neeg sawv cev ntawm cellulosed.
Neutralization thiab ntxuav: cov khoom siv tshuaj tiv thaiv yog neutralized thiab ntxuav kom tshem tawm cov tshuaj uas tsis raug thiab cov khoom lag luam.
Kom qhuav thiab crushing: cov cellulose ether yog qhuav thiab tsoo mus rau hauv qhov loj me.
Los ntawm kev tswj cov qib ntawm etherification thiab cov tshuaj tiv thaiv ntawm cov cellulose muaj cov neeg muaj kev pab tau hloov kho kom tau txais cov khoom lag luam tsawg.
3. Cov yam ntxwv
Tsis muaj viscosity: kev daws teeb meem tsis muaj kuab, uas yog qhov yooj yim rau cov twj tso kua mis thiab tshuaj tsuag, thiab tsim nyog rau cov ntawv thov uas yuav tsum tau muaj kev tawm tsam qis dua.
Zoo solubility: tuaj yeem tshem tawm sai sai hauv dej lossis cov kuab tshuaj organic los ua cov tshuaj sib txawv lossis kev sib cais.
Zoo heev zaj duab xis-ua cov cuab yeej: tuaj yeem tsim ib zaj yeeb yaj kiab du, uniform, haum rau txheej thiab txheej kev siv txheej txheem.
Tshuaj lom neeg inertness: muaj cov tshuaj ruaj khov zoo thiab tsis yooj yim kom hnov cov khoom xyaw.
Biocompatibility: feem ntau tsis muaj tshuaj lom, tsis muaj kev txob tshuaj, thiab muaj kev nyab xeeb rau tsiaj muaj sia.
4. Daim ntawv thov Thaj Chaw
Tsev cov ntaub ntawv
Hauv cov ntaub ntawv hauv tsev, cov neeg muaj kev paub tsis raug mob cellulos me me yog siv los ua cov tshuaj tiv thaiv thiab dej-ua kom muaj pob, plasters, thiab cov nplaum. Lawv tuaj yeem txhim kho kev tsim kho kev ua haujlwm, txo cov shrinkage tawg, thiab nce cov nyiaj phwj tuaj muaj zog thiab kav ntev.
Txheej ci thiab inks
Tsawg Cellulos Cellulose Cov neeg muaj kev paub yog siv nyob rau hauv cov dej pleev xim thiab cwj mem ua qauv zoo li cov tuab tuab thiab muaj stabilizers. Lawv pab kho cov khoom siv hluav taws xob, txhim kho cov khoom tsim kho, thiab tiv thaiv cov xim av.
Kws muag tshuaj thiab tshuaj pleev ib ce
Hauv cov kws kho mob thiab tshuaj pleev ib ce, qis-vaculos neeg muaj kev muaj cai siv los npaj cov ntsiav tshuaj, thiab lwm yam tuaj yeem muab cov yeeb yaj kiab zoo heev, kev ruaj khov, thiab biocompatibility.
Kev Lag Luam Khoom Noj
Nyob rau hauv kev lag luam khoom noj khoom haus, tsis muaj neeg txheeb xyuas cellulos cov neeg muaj kev paub yog siv cov khoom siv ua kom yoojyim, xws li hauv cov khoom noj mis nyuj, cov kua mis thiab cov khoom ci.
Roj thiab roj
Nyob rau hauv cov roj thiab roj kev lag luam, tsis muaj vacrice cellulos muaj neeg raug siv yog siv raws li thickeners cateners thiab stabilizers rau kev tswj cov rheology thiab ncua kev ncua.
Kev Lag Luam Ntawv
Tsis muaj neeg txheeb xyuas mob hlwb yog cov neeg muaj kev paub tsis raug siv los ua cov pulp hauv cov ntawv lag luam los txhim kho cov khoom lag luam saum npoo thiab luam ntawv ntawm cov ntawv.
5. Qhov zoo thiab qhov tsis zoo
Tsis muaj viscosity: Yooj yim los daws thiab cov txheej txheem, haum rau cov ntawv thov ntws tawm txaus.
Zoo solubility: ceev kawg, yooj yim los npaj cov kev daws teeb meem.
Versatility: Haum rau ntau yam siv thiab muaj ntau yam ntawm cov ntawv thov kev cia siab.
Kev tiv thaiv ib puag ncig: Feem ntau cellulose muaj kev hais txog biodegradable thiab ib puag ncig phooj ywg.
Qhov tsis zoo:
Cov nqi ntau dua: Vim tias cov txheej txheem ntau lawm, tus nqi ntawm cov vaccosity tsis muaj kev hais kom lwm tus yog siab dua.
Muaj tsawg tus ruaj khov: nyob rau hauv qee yam kev mob siab, xws li Ph Kub Siab lossis qib siab, muaj kev ruaj khov yuav cuam tshuam.
6. Yav Tom Ntej Kev Loj Hlob
Txhim kho cov txheej txheem ntau lawm: txo cov nqi ntau lawm thiab txhim kho cov khoom lag luam zoo los ntawm kev ua kom zoo thiab ua kom txaus.
Kev Hloov Kho: Tsim cov haujlwm cellulose nrog cov haujlwm tshwj xeeb (xws li ua kom zoo dua qub thiab cov duab ua ntej tshwj xeeb) kom tau raws li cov kev thov sib txawv.
Kev tiv thaiv ib puag ncig thiab kev ruaj khov: txhawb kev siv cov kev pab txuas dua tshiab thiab cov txheej txheem hauv ib puag ncig zoo los txo qhov kev cuam tshuam rau ib puag ncig.
Raws li ib qho tseem ceeb cellulose cellulose cellulative cellulos muaj neeg muaj kev hais qhia tau muaj txiaj ntsig zoo los ntawm kev lag luam vim lawv cov qauv viscosity tsis tshua muaj. Lawv tsis tsuas yog ua lub luag haujlwm tseem ceeb hauv cov teb ib txwm muaj, tab sis kuj pom muaj peev xwm zoo hauv cov ntawv thov tam sim no. Nrog kev nce qib ntawm science thiab thev naus laus zis thiab kev hloov pauv hauv kev thov kev lag luam, daim ntawv thov cov kev cia siab ntawm cov neeg muaj kev hais kom tsis muaj neeg paub tsawg.
Lub Sijhawm Post: Feb-17-2025