Carboxymethyl cellulose (CMC), ib qho cellulose derivative uas yaj tau hauv dej, muaj kev siv dav hauv cov number case luam ntawv, cov pulps coated, thiab cov ntaub ntawv ntim khoom. Nrog rau kev txhim kho ntawm cov thev naus laus zis luam ntawv mus rau qhov ceev dua, kev phooj ywg ib puag ncig, thiab digitalization, CMC, nrog nws cov khoom zoo heev thickening, zaj duab xis-tsim, dispersing, thiab dej-tuav, tab tom dhau los ua ib qho tseem ceeb ua haujlwm additive rau kev txhim kho qhov zoo ntawm kev luam ntawv.
- Lub Luag Haujlwm Tseem Ceeb ntawm CMC hauv Cov Tshuab Luam Ntawv
1.1. Kev Tswj Xyuas Kom Tuab Thiab Kev Rheological
CMC muaj cov nyhuv thickening tseem ceeb, tswj cov cwj pwm rheological ntawm cov kua mem lossis cov tshuaj pleev xim. Nws tswj tau qee qhov viscosity thaum lub kaw lus so thiab txo cov viscosity hauv qab shear, txhim kho flowability. Qhov "pseudoplastic" rheological khoom no pab cov kua mem hloov pauv ruaj khov thaum lub sijhawm luam ntawv, zam cov teeb meem xws li kua mem splatter, stringing, lossis sagging, yog li txhim kho qhov meej thiab uniformity ntawm cov kab luam tawm.
1.2. Cov teebmeem ntawm kev tawg thiab kev ruaj khov
Hauv cov xim inks, CMC tuaj yeem nqus tau rau ntawm qhov chaw ntawm cov xim me me, tsim kom muaj qhov ruaj khov lossis steric hindrance effect, txhim kho cov xim dispersion thiab txo cov khoom sib sau ua ke. Lub kaw lus pigment dispersion ruaj khov tsis yog tsuas yog ua kom cov xim muaj zog thiab zais lub zog xwb tab sis kuj ua rau lub neej txee ntawm cov kua mem ntev dua.
1.3. Kev Tsim Zaj Duab Xis thiab Kev Txhim Kho Kev Sib Txuas
Tom qab ziab, CMC ua rau pom cov khoom zoo heev uas ua rau zaj duab xis zoo nkauj, tsim cov txheej nplaum sib xws rau ntawm daim ntawv lossis zaj duab xis, txhim kho kev sib txuas ntawm cov kua mem thiab cov substrate, thiab txhim kho kev tiv thaiv kev sib txhuam, kev tiv thaiv dej, thiab kev ua haujlwm ntev ntawm cov txheej luam tawm.
1.4. Kev Khaws Cov Dej Thiab Cov Teeb Meem Tiv Thaiv Kev Qhuav
Hauv cov kua mem dej thiab cov ntawv luam tawm flexographic, CMC tuaj yeem txo qhov ziab ntawm cov kua mem ntawm lub phaj luam ntawv lossis hauv lub kaw lus cia kua mem, tiv thaiv phaj txhaws thiab txhim kho kev ruaj khov ntawm kev luam ntawv tas mus li.
- Cov Xwm Txheej Siv Tau ntawm CMC hauv Kev Lag Luam Luam Ntawv
2.1. Cov Tshuab Siv Kua Xim Uas Siv Dej
CMC siv ntau dua hauv cov kua luam ntawv gravure thiab flexographic uas ua los ntawm dej, ua rau cov viscosity, dispersibility, thiab stability zoo dua, thiab ua rau cov duab puv npo. Nws cov khoom zoo rau ib puag ncig thiab tsis muaj tshuaj lom ua rau nws yog lwm txoj hauv kev zoo dua li cov thickeners hluavtaws ib txwm muaj.
2.2. Kev Tsim Ntawv Txheej thiab Ntawv Tshwj Xeeb
Hauv cov txheej txheem txheej rau cov ntawv coated, cov ntawv dawb, thiab cov ntawv kab lis kev cai, CMC yog siv ua tus binder thiab rheology modifier, uas txhawb nqa kev tsim cov zaj duab xis sib xws thiab txhim kho cov ntawv du, gloss, thiab printability. Tshwj xeeb tshaj yog nyob rau hauv cov ntawv high-gloss, CMC tuaj yeem txhim kho cov xim faib tawm, ua rau cov ntsiab lus meej dua.
2.3. Cov Kua Luam Ntawv Inkjet
Nrog rau kev tsim cov thev naus laus zis inkjet, CMC tau siv ntau dua hauv cov tshuab inkjet uas siv dej:
Tswj cov duab ntawm cov tee dej thiab kev sib kis;
Txhim kho qhov ruaj khov ntawm xim;
Txo qhov nrawm ntawm lub taub hau luam tawm.
Nws pab txhim kho qhov zoo ntawm cov duab hauv cov teb uas muaj qhov tseeb siab xws li kev luam duab thiab kev luam daim ntawv lo.
2.4. Kev Luam Ntawv Ntim Khoom thiab Cov Khoom Siv Sib Chwv Khoom Noj
CMC muaj kev nyab xeeb thiab tsis muaj tshuaj lom thiab siv tau rau hauv cov tshuab luam ntawv ntim khoom noj kom pab txhim kho kev nplaum thiab kev tiv thaiv roj, thaum ua tau raws li qhov yuav tsum tau ua ntawm ib puag ncig xws li kev puas tsuaj ntawm cov tsiaj txhu thiab kev tsiv teb tsaws chaw tsawg.
- Cov Qauv Tshiab ntawm Daim Ntawv Thov CMC hauv Kev Lag Luam Luam Ntawv
3.1. Kev Tsim Kho Cov CMC Uas Muaj Kev Hloov Chaw Zoo Thiab Muaj Kev Ua Haujlwm Zoo
Los ntawm kev nce qib ntawm kev hloov pauv (DS) thiab kev sib xws, kev tiv taus ntsev, pob tshab, thiab kev ua kom tuab tuaj yeem txhim kho tau zoo heev, ua rau nws tsim nyog dua rau cov kua mem dej uas muaj cov khoom khov thiab cov kua mem inkjet.
3.2. Kev Siv Tshuab Sib Xyaws Xim Nanoscale
Kev sib xyaw ua keCMCNrog rau nano-pigments tuaj yeem txhim kho kev ruaj khov ntawm kev sib kis, txo qhov loj me ntawm cov kua mem, thiab txhim kho cov xim saturation thiab cov ntsiab lus hauv kev luam ntawv siab.
3.3. Cov Khoom Siv Ntxiv Rau Cov Tshuab Uas Siv Dej Ntsuab Thiab Zoo Rau Ib Puag Ncig
Vim muaj kev txwv tsis pub siv VOC ntau zuj zus, qhov kev thov rau cov kua mem uas muaj dej thiab cov kua roj uas muaj dej ntau zuj zus sai heev. Ua ib yam khoom siv ntuj tsim, CMC yog cov khoom siv rov ua dua tshiab thiab lwj tau, ua ib feem tseem ceeb ntawm cov kua mem ntsuab.
3.4. Kev nthuav dav ntawm CMC hauv Kev Luam Ntawv Digital
Los ntawm kev kho qhov hnyav molecular thiab qib viscosity, CMC tuaj yeem hloov kho rau kev luam ntawv inkjet ceev ceev, txhim kho kev tswj hwm droplet thiab muab kev ruaj khov thiab kev ua haujlwm ntev dua rau kev luam ntawv digital.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-15-2025