Cov cellulose hais ua si ib lub luag haujlwm tseem ceeb hauv kev lag luam daim ntawv, pabcuam hauv kev tsim cov ntawv thiab kev txhim kho cov khoom lag luam zoo thiab ua tau zoo thiab ua tiav cov khoom lag luam zoo thiab ua tau zoo.
1. Taw qhia rau Cellulose Ethere:
Cellulose Cov neeg muaj kev hais ua yog ib pab pawg-doluble polymers muab los ntawm cellulose, lub ntuj polymer pom nyob hauv tsob ntoo cell phab ntsa. Lub hauv paus tseem ceeb ntawm cov neeg muaj cov neeg muaj kev hais ua ke yog ntoo pulp, thiab lawv tau siv dav hauv ntau yam lag luam, suav nrog cov tshuaj, kev tsim kho, thiab tshwj xeeb yog cov ntawv kev lag luam.
2. Cov khoom ntawm cellulose ether:
.water solubility:
Ib qho ntawm cov khoom tseem ceeb ntawm cellulose muaj kev hais ua yog lawv cov dej solubility. Cov cuab yeej no ua rau lawv yooj yim dispersed nyob rau hauv dej, pab txhawb lawv txoj kev koom ua ke rau hauv pulp.
b. Zaj duab xis tsim muaj peev xwm:
Cov neeg muaj cov neeg muaj kev hais ua yeeb yaj kiab muaj zaj duab xis-tsim cov khoom muaj peev xwm ua rau txhim kho cov khoom ntiag tug thiab txhim kho cov ntawv zoo tag nrho.
c. Thickening thiab tsevneeg:
Cellulose Cov neeg hais ua haujlwm ua kom tuab, nce viscosity ntawm lub pulp. Cov yam ntxwv no tau txais txiaj ntsig zoo los tswj cov dej ntws ntawm pulp thaum lub sij hawm papermaking. Ib qho ntxiv, lawv ua raws li cov nplaum, txhawb cov khoom nplaum ntawm cov fibers hauv daim ntawv.
d. Ruaj khov:
Cov neeg ua kom muaj kev coj ua tau zoo nyob rau hauv ntau yam kev coj noj coj ua nyob rau hauv ntau yam kev coj noj coj ua nyob rau ntau yam kev hloov kho thiab PHQU, pab txhim kho lawv txoj kev ntseeg tau hauv cov txheej txheem papermaking.
3.Qhov lub luag haujlwm ntawm cellulose muaj kev hais ua neeg muaj kev pab hauv daim ntawv ntawv:
a. Kev muag khoom thiab tso kua dej txhim kho:
Cov kws hais ua haujlwm cellulose yog paub rau lawv lub peev xwm los txhim kho pulp kev ua kom ruaj khov thiab tso kua rau thaum lub sij hawm papermakaking. Qhov no txhim kho daim ntawv flatness thiab txo cov kev siv dej.
b. Muaj zog ntxiv:
Qhov kev sib ntxiv ntawm cov ntaub ntawv uas muaj neeg muaj kev pab ntxiv txhim kho daim ntawv lub zog, suav nrog lub zog tensile, tawg muaj zog thiab kua muag ua. Qhov no yog qhov tshwj xeeb tshaj yog rau kev ua cov ntawv zoo tsim rau ntau cov ntawv thov.
C.Surface Loj:
Cov kws hais ua haujlwm ntawm cellulose tau siv nyob rau hauv nto sizing formulations los pab tsim kom muaj kev du, cov ris tsho zoo nkauj rau ntawm daim ntawv. Qhov no ua kom tau cov tshuab luam ntawv thiab cov tsos ntawm cov khoom kawg.
d. Tswj ntawm Inkas nqus:
Hauv kev siv cov ntawv thov, cellulose cellulose pab tswj kav hauv kev nqus, tiv thaiv dhau-diffusion thiab kom ntseeg tau zoo.
e. Tswj porcase:
Cellulose hais pab tswj hwm tus porosity ntawm daim ntawv los ntawm kev cuam tshuam rau kev tsim ntawm cov qauv ntawv. Qhov no yog qhov tseem ceeb rau cov ntawv thov xws li ntawv lim.
f. Cov kev ua kom pab tsis pub ua haujlwm hauv chav ua haujlwm thiab cov khoom sib ntxiv:
Cellulose kev ua kom muaj kev hais ua ke raws li cov kev pab ntawm cov pab zam rau cov fillers thiab lwm yam kev sib ntxiv hauv cov txheej txheem papermakaking. Qhov no ua kom pom tseeb tias cov khoom xyaw no tau txais tau zoo rau hauv cov qauv ntawv.
4. Daim ntawv thov ntawm cellulose ether hauv cov khoom lag luam:
A.printing thiab sau ntawv:
Cov neeg hais txog cellulose tau siv dav hauv kev tsim cov tshuab luam ntawv thiab sau ntawv kom ua tiav luam tawm zoo tshaj plaws, du thiab cov khoom sib txawv.
b. Wrapping ntawv:
Nyob rau hauv ntim ntaub, cellulose hais pab pab nce lub zog, kom cov ntawv tuaj yeem tiv thaiv lub ntim thiab xa khoom.
c.Tissue:
Cellulose muaj cai muab ntaub ntawv tso ntaub ntawv nws lub mos mos, lub zog thiab nqus tau. Cov khoom no yog qhov tseem ceeb rau cov ntsej muag ntsej muag, ntaub hoob nab thiab lwm cov khoom muag ntaub muag.
D.Special Ntawv:
Cov ntawv tshwj xeeb, xws li cov ntawv lim, cov hluav taws xob rwb thaiv tsev daim ntawv, thiab cov ntawv kho mob, feem ntau cuam tshuam cov neeg uas yuav tau ua kom tau raws li cov kev ua tau zoo.
5. Ib puag ncig kev txiav txim siab:
a. Biodegradability:
Cov neeg hais lus uas muaj neeg hais tias feem ntau yog biodegradable, nyob rau hauv kab nrog daim ntawv kev lag luam kev loj hlob xav tau kev xav tau ib puag ncig tus phooj ywg thiab muaj kev coj ua.
b. Txuas txuas ntxiv dag zog:
Txij li thaum kws kho mob cellulose tau muab los ntawm ntoo pulp, ib qho kev pab ntxiv dua tshiab, lawv siv ua rau cov txheej txheem kev ua haujlwm ntawm cov ntawv txheej txheem.
Cov cellulose hais ua si lub luag haujlwm multifaceted hauv kev lag luam ntawv, cuam tshuam rau txhua qhov ntawm daim ntawv ntawm cov ntawv thiab pab los tsim cov ntawv zoo ntawm cov ntawv. Lawv cov dej solubility, ua yeeb yaj kiab ua yeeb yaj kiab, thiab lwm yam muaj peev xwm ua rau lawv muaj txiaj ntsig zoo ntxiv hauv cov txheej txheem papermaking. Raws li cov ntawv kev lag luam txuas ntxiv mus hloov zuj zus, qhov tseem ceeb ntawm cov kws kho mob cellulose hauv kev txhim kho cov ntawv zoo, kev ua tau zoo thiab kev ruaj khov yog qhov txuas ntxiv mus thiab loj hlob.
Lub Sijhawm Post: Jan-15-2024