Hauv kev lag luam papermaking, sodium carboxymethyl cellulose (CMC) ua haujlwm ntau yam tseem ceeb hauv ntau theem ntawm cov txheej txheem papermaking. Nov yog li cas CMC ua haujlwm hauv kev lag luam papermaking:

1. Retention thiab Drainage Aid:
   • CMC feem ntau yog siv los ua kev tuav pov hwm thiab cov dej pab hauv kev ua ntawv. Nws txhim kho qhov tuav ntawm cov fibers zoo, muab tub lim, thiab lwm yam khoom ntxiv hauv daim ntawv pulp, ua rau cov ntawv muaj zog dua thiab cov yam ntxwv zoo dua.
   • CMC txhim kho cov dej ntws tawm ntawm cov ntaub ntawv ntawm cov hlau los yog ntaub, uas ua rau kom dewatering sai dua thiab muaj zog ntau lawm.
   • Los ntawm kev txhawb nqa fiber ntau thiab muab tub lim thiab txhim kho cov dej ntws zoo, CMC pab txhim kho kev tsim thiab sib xws ntawm cov ntawv ntawv, txo qhov tsis xws luag xws li streaking, me ntsis, thiab qhov.
2. Kev Txhim Kho Kev Tsim Kho:
   • Sodium CMC pab txhawb kev txhim kho ntawm daim ntawv los ntawm kev txhim kho kev sib faib thiab kev sib txuas ntawm fibers thiab muab tub lim thaum txheej txheem tsim cov ntawv.
   • Nws pab tsim kom muaj kev sib koom ua ke ntawm fiber ntau thiab muab tub lim, ua rau cov ntawv zoo dua qub, smoothness, thiab printability.
   • CMC txo cov kev xav ntawm fibers thiab fillers rau agglomerate los yog clump ua ke, kom ntseeg tau tias txawm faib thoob plaws hauv daim ntawv thiab txo qhov tsis xws luag xws li mottling thiab tsis sib xws txheej.
3. Surface Size:
   • Hauv daim ntawv thov sizing saum npoo, sodium CMC yog siv los ua tus neeg saib xyuas qhov loj me los txhim kho cov khoom saum npoo ntawm daim ntawv, xws li smoothness, ink receptivity, thiab luam ntawv zoo.
   • CMC tsim ib zaj duab xis nyias nyias ntawm daim ntawv, muab ib qho zoo nkauj thiab ci tiav uas ua rau cov tsos thiab luam tawm ntawm daim ntawv.
   • Nws pab txo tus number case nkag mus rau hauv daim ntawv substrate, ua rau cov duab luam tawm kom zoo dua qub, txhim kho xim luam tawm, thiab txo tus lej siv.
4. Strength Enhancer:
   • Sodium CMC ua lub zog ua kom muaj zog hauv papermaking los ntawm kev txhim kho kev sib raug zoo thiab kev sib koom ua ke ntawm cov ntawv fibers.
   • Nws nce lub zog sab hauv (lub zog tensile thiab kua muag tsis kam) ntawm daim ntawv ntawv, ua rau nws ruaj khov thiab tiv taus kua muag thiab tawg.
   • CMC tseem txhim khu lub zog ntub ntawm daim ntawv, tiv thaiv kev deformation ntau dhau thiab tawg ntawm daim ntawv qauv thaum raug dej los yog kua.
5. Tswj Flocculation:
   • CMC tuaj yeem siv los tswj cov flocculation ntawm daim ntawv pulp fibers thaum lub sijhawm ua ntawv. Los ntawm kev kho qhov ntau npaum thiab molecular hnyav ntawm CMC, tus cwj pwm flocculation ntawm fibers tuaj yeem ua kom zoo dua los txhim kho cov kua dej thiab tsim cov yam ntxwv.
   • Tswj flocculation nrog CMC pab txo cov fiber ntau flocculation thiab agglomeration, kom ntseeg tau tias tsis sib xws ntawm cov fibers thiab fillers thoob plaws hauv daim ntawv pulp ncua kev kawm ntawv.

sodium carboxymethyl cellulose (CMC) plays lub luag haujlwm tseem ceeb hauv kev lag luam papermaking los ntawm kev pabcuam khaws cia thiab tso dej, tsim kev txhim kho, tus neeg saib xyuas qhov loj me, lub zog txhim kho, thiab tus neeg saib xyuas flocculation. Nws versatility, compatibility, thiab kev ua tau zoo ua rau nws muaj txiaj ntsig zoo hauv ntau qib ntawv, suav nrog cov ntawv luam tawm, ntim cov ntaub ntawv, cov ntaub so ntswg, thiab cov ntaub ntawv tshwj xeeb, pab txhawb cov ntawv zoo, kev ua tau zoo, thiab tus nqi.