Cellulose Cov neeg muaj kev hais ua ke tau siv dav hauv cov xim txheej thickeners vim lawv cov khoom tshwj xeeb thiab kev ua haujlwm. Lawv txhim kho lub visce ntawm txheej, muab cov khoom thov txhim kho kom zoo dua qub thiab cov khoom ua haujlwm kawg. Nkag siab txog lawv txoj kev ua haujlwm yuav tsum tau delving rau lawv cov qauv molecular, kev sib cuam tshuam nrog cov kuab tshuaj thiab lwm yam kev cuam tshuam rau rhuaology thiab zaj duab xis tsim.
1. Molecular qauv:
Cellulose muaj cov neeg hais tau muab los ntawm cellulose, ib qho tshwm sim polymer pom hauv tsob ntoo cell phab ntsa. Los ntawm kev hloov kho tshuaj lom neeg, xws li etherification, hydroxypropy, lossis carboxymethylation, cellulose muaj kev hais ua neeg tau tsim tawm. Cov kev hloov kho no qhia cov pab pawg ua haujlwm rau hauv lub cellulose caj qaum, hloov kho nws solubility thiab kev sib cuam tshuam nrog cov kuab tshuaj.
2. Solubility thiab o:
Cov neeg hais kom lwm tus muaj kev hais sib txawv ntawm cov solubility hauv dej thiab cov kuab tshuaj organic, nyob ntawm seb hom thiab qib hloov chaw. Nyob rau hauv cov ua yeeb yam zoo, cellulose cov neeg muaj kev pab uas tsis muaj kev cuam tshuam o o Tus cwj pwm o tuaj rau lawv cov nyhuv tuab tuab, raws li cov saw zig polymer polymer entangs entangs entangs entangs entangs thiab tabkaum ntawm cov kuab tshuaj.
3. Hydrogen Bonding:
Hydrogen Kev Ua Si yog lub luag haujlwm tseem ceeb hauv kev sib cuam tshuam ntawm cellulose cov neeg muaj kev hais ua cellulais thiab lwm yam lwg me lossis lwm yam hauv cov txheej txheem. Cov pab pawg hydroxyl tam sim no nyob rau hauv cov cellulose muaj kev hais ua ke tuaj yeem tsim cov lwg hydrogen nrog cov lwg dej, txhawb kev nce qib thiab o. Tsis tas li ntawd, Hydrogen Herling pab txhawb nqa kev sib cuam tshuam ntawm cellulose neeg muaj kev hais ua thiab cov lus hauv cov qauv txheej txheej, muaj feem cuam tshuam.
4. Rheology hloov kho:
Cellulose Cov neeg hais kom ua li thickeners los ntawm kev hloov cov khoom ntawm cov khoom ntawm cov txheej txheem txheej txheem. Lawv muab cov tshuaj uas ua kom yuag yuag, lub ntsiab lus uas viscosity txo raws li cov ntawv thov kev ntxhov siab ntawm kev ntxhov siab. Cov cuab yeej no ua kom yooj yim ntawm daim ntawv thov thaum muab cov viscosity txaus los tiv thaiv sagging lossis dripping ntawm txheej.
5. Zaj duab xis tsim thiab ruaj khov:
Thaum lub sij hawm ziab thiab kho cov txheej txheem, cov neeg hais lus cellulos coj ua pab rau kev tsim cov khaub ncaws zoo nkauj thiab ruaj khov. Raws li cov kev daws teeb meem evaporates, lub cellulose ether molecules dlhos thiab anentangle los ua ib cohesive zaj duab xis qauv. Zaj duab xis no muaj zog txhua lub zog, cov nplaum kom lub substrate, thiab tiv taus rau ib puag ncig cov khoom siv xws li cov av noo thiab kev puas tsuaj.
6. Kev sib xyaw thiab cov sawj ntsws:
Cellulose muaj kev tsis txaus siab ua tau zoo nrog ntau yam ntawm cov txheej txheej sib dhos, suav nrog cov nyom, pigments, thiab ntxiv. Lawv tuaj yeem synergistically cuam tshuam nrog lwm cov thickeners lossis rheology modifiers, txhim kho lawv cov hauj lwm zoo nyob rau hauv txheej txheej txheej txheej txheej txheej. Los ntawm kev xaiv cov kev xaiv thiab kev ua ke ntawm cellulose muaj kev pab cuam nrog lwm cov khoom sib ntxiv nrog cov khoom sib ntxiv thiab kev ua tau zoo ntawm cov txheej txheem.
7. Ib puag ncig thiab kev txiav txim siab:
Cov cellulose muaj kev tsim nyog rau hauv cov txheej txheem txheej txheem vim lawv cov biodegradability, txuas ntxiv nrog cov kev cai tswj hwm thiab kev nyab xeeb kev nyab xeeb. Raws li cov neeg tau txais kev pab thiab cov chaw haujlwm tswj hwm xav tau kev thov kom muaj kev pab kom muaj kev pab kom cov homphiaj no nrog cov hom phiaj no.
Cellulose muaj kev muaj nuj nqi ua haujlwm raws li thickeners hauv kev siv cov qauv molecular, kev sib txuam nrog kev sib cuam tshuam, zaj duab xis tsim cov khoom, sib xyaw, thiab ib puag ncig zoo. Lawv cov kev sib tw ntau ntau yam ua rau lawv tsis tseem ceeb ua rau lawv tsis tseem ceeb hauv kev ua yeeb yam, ua rau txhim kho kev ua tau zoo, kev ua kom zoo nkauj, thiab kev ruaj ntseg.
Lub sij hawm Post: Jun-12-2024