Hloov chaw dej soluble cellulose neeg muaj cai rau daim ntawv

Hloov cov dej-soluble cellulos neeg muaj kev pab hais, xws liHydroxyPropyyl Methylcellulose(HPMC) lossis carboxymethyl cellulose (CMC), rau hauv daim ntawv foos muaj feem cuam tshuam nrog cov txheej txheem uas feem ntau suav nrog cov kauj ruam hauv qab no. Cov txheej txheem txheej txheem tshwj xeeb tuaj yeem sib txawv raws li daim ntawv thov thiab cov yam ntxwv xav tau ntawm cov ntawv txheeb.

Cov kauj ruam rau kev hloov cov dej-soluble cellulose neeg muaj kev hais kom ua rau daim ntawv:

1. Kev npaj ntawm cellulose ether daws:
   • Dissolve cov dej-soluble cellulose ether hauv dej los npaj cov tshuaj yog homogeneous.
   • Kho cov concentration ntawm lub cellulose ether hauv kev daws teeb meem raws li cov khoom xav tau ntawm cov ntawv txheeb.
2. Ntxiv (yeem):
   • Ntxiv cov tshuaj ntxiv uas yuav tsum tau ua, xws li cov yas tshuab, fillers, lossis txhawb cov neeg sawv cev, hloov kho cov khoom ntawm cov ntawv txheeb. Cov tshuab yas, piv txwv, tuaj yeem txhim kho kom tau yooj yim.
3. Nws thiab homogenization:
   • Sib tov cov tshuaj kom huv kom ntseeg tau cov kev faib tawm ntawm cellulose ether thiab ntxiv.
   • Homogenize qhov sib xyaw kom tawg txhua cov aggregates thiab txhim kho kev sib txuam ntawm kev daws teeb meem.
4. Casting lossis Txheej:
   • Siv cov txheej txheem casting lossis txheej txheej los siv lub cellulose ether nrog rau hauv substrate.
   • Cov substrates muaj peev xwm suav nrog iav daim phiaj, tso cov hnab yas, lossis lwm cov ntaub ntawv nyob ntawm daim ntawv thov.
5. Tus kws kho mob hniav lossis tus nthuav dav:
   • Siv tus kws kho mob hniav lossis tus xa khoom los tswj cov tuab ntawm cov neeg siv cellule ether ether.
   • Kauj ruam no pab ua kom tiav cov khaub ncaws hnav thiab tswj cov tuab rau cov ntawv txheeb.
6. Drying:
   • Cia cov coated substrate kom qhuav. Cov hau kev ziab tuaj yeem suav nrog ziab cua, qhov cub kom qhuav, lossis lwm yam kev tov kom qhuav.
   • Cov txheej txheem kom qhuav tshem tawm cov dej thiab solidifies lub cellulose ether, tsim ib daim ntawv.
7. Txiav lossis Shaping:
   • Tom qab ziab, txiav lossis cov duab lub cellulose ether-coated substrate rau hauv daim ntawv uas xav tau thiab daim ntawv.
   • Kev txiav ua kom tsis siv hniav, tuag, lossis lwm yam khoom txiav.
8. Tswjhwm Zoo:
   • Ua cov ntawv tswj hwm zoo kom ntseeg tau tias cov ntawv txheeb xyuas cov kev xav tau, suav nrog cov tuab, yoog, thiab lwm yam khoom muaj feem cuam tshuam.
   • Kev soj ntsuam yuav muaj kev tshuaj ntsuam xyuas, ntsuas kev ntsuas, thiab lwm cov txheej txheem kev paub zoo.
9. Ntim:
   • Ntim cov ntawv txheeb rau hauv ib txoj kev uas tiv thaiv lawv ntawm noo noo thiab sab nraud yam.
   • Sau npe thiab cov ntaub ntawv tuaj yeem suav nrog cov khoom cim.

Txiav txim siab:

• Yas yooj yim yog qhov yooj yim yog qhov tseem ceeb xws li glycerol yuav ntxiv rau lub cellulose etherhu daws ua ntej cam khwb cia.
• Kev haus ziab kom qhuav: Cov cua kom zoo yog qhov tseem ceeb kom tsis txhob muaj kev tsis sib xws thiab ua tsov ua rog.
• Cov xwm txheej ib puag ncig: tuaj yeem cuam tshuam los ntawm ib puag ncig cov mob xws li kub thiab av noo.

Qhov txheej txheem dav dav no tuaj yeem hloov raws li cov kev cai tshwj xeeb ntawm daim ntawv thov, txawm hais tias nws yuav rau cov tshuaj yeeb yaj kiab, ntim khoom noj, lossis lwm yam kev siv. Qhov kev xaiv ntawm Cellulose ETETS hom thiab tsim cov tsis muaj kab yuav cuam tshuam cov khoom ntawm lub txiaj ntsig ntawm cov nplooj ntawv tshwm sim.