Vim li cas CMC ua lub luag haujlwm tseem ceeb hauv Kev Lag Luam Ua Ntawv

Sodium carboxymethyl cellulose (CMC) plays lub luag haujlwm tseem ceeb hauv kev lag luam papermaking vim nws cov khoom tshwj xeeb thiab kev ua haujlwm. Nov yog vim li cas CMC yog qhov tseem ceeb hauv kev tsim cov ntawv:

1. Kev Tiv Thaiv Kev Tiv Thaiv thiab Kev Tiv Thaiv Dej: CMC ua raws li kev tuav pov hwm thiab kev pab dej hauv cov txheej txheem ntawv. Nws txhim kho qhov khaws cia ntawm cov khoom zoo, fibers, thiab cov khoom siv ntxiv hauv cov ntawv Tshuag, tiv thaiv lawv cov kev poob thaum tsim thiab txhim kho daim ntawv tsim thiab sib xws. CMC kuj tseem txhim kho cov dej ntws los ntawm kev nce cov dej ntws los ntawm cov ntawv tshuab xaim mesh, txo cov sij hawm xav tau rau daim ntawv tsim thiab ziab.
2. Internal Sizing Agent: CMC ua hauj lwm raws li tus neeg sawv cev sizing nyob rau hauv daim ntawv formulations, imparting dej tsis kam thiab ink receptivity rau daim ntawv tiav. Nws adsorbs mus rau cellulose fibers thiab muab tub lim, ua ib tug hydrophobic barrier uas repels dej molecules thiab txo cov kev nkag mus ntawm cov kua rau hauv daim ntawv qauv. CMC-raws li sizing formulations txhim kho lub printability, ink holdout, thiab seem stability ntawm daim ntawv cov khoom, pab kom lawv haum rau ntau yam luam ntawv thiab sau ntawv.
3. Surface Sizing Agent: CMC yog siv los ua tus neeg saib xyuas qhov chaw los txhim kho cov khoom ntawm daim ntawv, xws li smoothness, gloss, thiab printability. Nws tsim ib zaj duab xis nyias ntawm daim ntawv ntawm daim ntawv, sau rau hauv qhov chaw tsis sib xws thiab txo qhov porosity. Qhov no pab txhim kho lub zog saum npoo, tuav tus number case, thiab luam ntawv zoo ntawm daim ntawv, uas ua rau cov duab zoo nkauj dua thiab cov ntawv luam tawm. CMC-based deg sizing formulations kuj txhim kho qhov smoothness thiab runnability ntawm daim ntawv ntawm luam ntawv thiab hloov khoom siv.
4. Wet End Additive: Nyob rau hauv ntub kawg ntawm daim ntawv tshuab, CMC ua hauj lwm raws li ib tug ntub kawg additive los txhim kho daim ntawv tsim thiab daim ntawv lub zog. Nws txhim kho cov flocculation thiab tuav ntawm fibers thiab fillers, ua rau kom zoo dua daim ntawv tsim thiab uniformity. CMC kuj tseem ua kom muaj zog sib txuas ntawm fibers, ua rau cov ntawv siab dua tensile zog, tsim kua muag, thiab tawg lub zog. Qhov no txhim kho tag nrho cov khoom zoo thiab durability ntawm cov ntawv tiav.
5. Pulp Dispersant thiab Agglomerate Inhibitor: CMC ua haujlwm raws li cov pulp dispersant thiab agglomerate inhibitor hauv papermaking, tiv thaiv cov agglomeration thiab rov agglomeration ntawm cellulose fibers thiab nplua. Nws disperses fibers thiab nplua tusyees thoob plaws hauv daim ntawv Tshuag, txo cov fiber ntau bundling thiab txhim kho daim ntawv tsim thiab uniformity. CMC-raws li dispersants txhim khu kev ua tau zoo ntawm cov ntaub so ntswg thiab txo qhov tshwm sim ntawm qhov tsis xws luag xws li pob, qhov, thiab streaks hauv daim ntawv tiav.
6. Nto Txheej Binder: CMC yog siv los ua cov ntawv khi hauv cov txheej txheem txheej txheej rau cov ntawv coated thiab cov ntawv ntawv. Nws khi cov xim xim, xws li calcium carbonate los yog kaolin, rau saum npoo ntawm daim ntawv substrate, tsim ib txheej txheej txheej. CMC-raws li txheej txheej txhim kho kev luam tawm, ci ntsa iab, thiab cov khoom siv kho qhov muag ntawm cov ntawv coated, txhim kho lawv cov tsos thiab kev lag luam hauv kev luam ntawv zoo thiab ntim cov ntawv thov.
7. Environmental Sustainability: CMC muab cov txiaj ntsig ib puag ncig hauv kev lag luam papermaking ua ib qho txuas ntxiv, biodegradable, thiab tsis muaj tshuaj lom ntxiv. Nws hloov cov hluavtaws sizing tus neeg sawv cev, dispersants, thiab txheej binders, txo cov kev cuam tshuam ib puag ncig ntawm cov ntawv tsim thiab pov tseg. CMC-raws li cov khoom lag luam yog recyclable thiab compostable, pab txhawb rau kev ua liaj ua teb kom ruaj khov thiab cov phiaj xwm kev lag luam ncig.

sodium carboxymethyl cellulose (CMC) plays lub luag haujlwm tseem ceeb hauv kev lag luam papermaking los ntawm kev txhim kho cov ntawv tsim, lub zog, cov khoom nto, kev luam tawm, thiab kev ruaj ntseg ib puag ncig. Nws cov khoom siv ntau yam ua rau nws muaj ntau yam ntxiv rau kev txhim kho qhov zoo, kev ua tau zoo, thiab kev lag luam kev sib tw ntawm cov ntawv thiab cov khoom siv ntawv hauv ntau hom ntawv.