Txhawm rau piv tau sib piv thiab ntsuas CMC (Carmc (HydroxyProther methylencose), peb yuav tsum txiav txim siab, thiab haum rau ntau lub hom phiaj. Ob CMC thiab HPMC yog cellulose cellulotives dav siv nyob rau hauv ntau yam lag luam, suav nrog cov tshuaj, cov khoom noj, tshuaj pleev ib ce, thiab kev tsim kho. Txhua tus muaj nws cov yam ntxwv tshwj xeeb thiab cov txiaj ntsig, uas txiav txim siab lawv txoj kev coj kom tau rau cov ntawv thov tshwj xeeb.
1. Taw qhia rau CMC thiab HPMC:
Carboxymethyl cellulose (CMC):
CMC yog cov dej-soluble cellulose derivative muab tau los ntawm ntuj cellulose los ntawm kev qhia cov pab pawg carboxymethyl mus rau lub cellulose cellebone. Nws yog feem ntau siv los ua tus neeg sawv cev tuab tuab, stabilizer, thiab dej tuav tswj tus neeg saib xyuas hauv ntau yam kev lag luam.
HydroxyPropyyl methylcellulose (HPMC):
HPMC yog lwm cov dej-soluble cellulose cellulose derivative los ntawm kev kho cellulose nrog cov tshuaj pleev cov tshuaj pleev thiab methyl chloride. Nws pom cov ntawv thov hauv cov tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho vim nws cov thickening, zaj duab xis-ua, thiab cov khoom siv khi.
2. Cov Khoom Sib Piv:
Solubility:
CMC: tag nrho soluble hauv dej.
HPMC: Soluble hauv dej raws li cov xwm txheej tshwj xeeb, sib sau kom meej lossis me ntsis opalescent daws.
Viscosity:
CMC: Cov ntaub ntawv nthuav dav siab siab viscosity txawm nyob rau hauv cov kev ua kom tsawg.
HPMC: Viscosity Txawv nyob ntawm cov degree ntawm hloov chaw thiab hnyav hnyav.
Zaj duab xis-ua cov khoom:
CMC: Muaj kev txwv ua zaj duab xis-tsim muaj peev xwm.
HPMC: Cov yeeb yaj kiab zoo heev-ua cov khoom, ua kom haum rau cov ntawv thov zoo li cov txheej txheem thiab cov yeeb yaj kiab.
Thermal Stability:
CMC: Feem ntau qis qis thermal stability piv rau HPMC.
HPMC: Cov khoom pov thawj zoo dua zoo dua thermal ruaj khov, ua rau nws haum rau cov ntawv thov kub-.
3.Aplpications:
CMC daim ntawv thov:
Cov khoom noj khoom haus: siv los ua cov neeg siv khoom noj kom khov, thiab noo noo
Kws Tshuaj: ua haujlwm hauv cov qauv ntsiav tshuaj raws li lub binder thiab ua tsis taus.
Cov khoom siv saib xyuas tus kheej: pom nyob rau hauv cov tshuaj txhuam hniav: cream, cream, potions, thiab tshuaj pleev ib ce ua cov thickener thiab stabilizer.
Kev DRILLING roj: siv hauv cov kua tho kom tswj kom tswj viscosity thiab kua poob.
HPMC daim ntawv thov:
Kev lag luam tsim kev tsim kho: Siv rau hauv cov cement-raws li cement-cortars, plasters, thiab cov nplaum nplaum kom txhim kho kev ua haujlwm thiab adhesion.
Kws kev lag luam: ua haujlwm hauv kev tswj hwm cov tshuab tshuaj, cov ntsiav tshuaj pleev xim, thiab cov kev daws teeb meem ophthalmic.
Kev lag luam khoom noj: siv los ua cov tuab dua, emulsifier, thiab stabilizer nyob rau hauv cov khoom lag luam li bakery khoom thiab cov khoom noj siv mis.
Cov tshuaj pleev ib ce: pom nyob rau hauv cov khoom lag luam xws li tshuaj zawv plaub hau, creams, thiab lotions ua tus sawv cev tuab thiab zaj duab xis yav tas los.
4. Qhov zoo thiab qhov tsis zoo:
Qhov zoo ntawm CMC:
.
Zoo heev thickening thiab ruaj khov zog.
Raug nqi zoo.
Muab ntau yam ntawv thov hauv kev lag luam ntau yam.
Qhov tsis zoo ntawm CMC:
Txwv zaj duab xis-ua lub peev xwm.
Qis dua thermal stability piv rau HPMC.
Tuaj yeem ua kom pom cov kev ua tau zoo nkauj nyob ntawm PH thiab electrolyte messorration.
Qhov zoo ntawm HPMC:
Zoo heev zaj duab xis tsim cov khoom.
Zoo dua Thermal Stability.
Muab cov nplaum thiab cov haujlwm tsis muaj zog nyob hauv cov ntawv thov kev tsim kho.
Haum rau kev tswj-tso cov tshuaj ntawm cov tshuaj ua yeeb yam.
Qhov tsis zoo ntawm HPMC:
Tus nqi siab dua piv rau CMC.
Solubility yuav sib txawv nyob ntawm cov qhab nia thiab cov ntaub ntawv thov.
Kev ua tej zaum yuav muaj cov khoom siv tshwj xeeb thiab cov xwm txheej.
5. Haum rau cov ntawv thov tshwj xeeb:
CMC:
Qhov zoo tshaj plaws rau cov ntawv thov uas xav tau cov dej ua kom muaj dej kom muaj zog thiab cov khoom lag luam zoo li cov khoom noj thiab cov khoom noj.
Haum rau cov ntawv thov tsawg-qhov chaw uas thermal ruaj khov tsis yog qhov kev txhawj xeeb thawj.
Siv dav hauv cov tshuaj ntawm cov tshuaj uas muaj kev cuam tshuam sai dua.
HPMC:
Xav txog cov ntawv thov uas xav tau cov duab ua yeeb yaj kiab zoo tshaj plaws, xws li txheej ci thiab cov yeeb yaj kiab hauv cov zaub mov.
Zoo-haum rau kev siv cov ntawv thov vim nws cov adhesion zoo, kev ua haujlwm, thiab thermal stability.
Haum rau kev tswj cov tshuaj xa tshuaj yeeb cov tshuab yuav tsum tau ua kom tiav kinetics.
6. Xaus:
Ob CMC thiab HPMC yog cov txiaj ntsig cellulose cellulose ntawm cov khoom sib txawv thiab cov ntawv thov. Qhov kev xaiv ntawm CMC thiab HPMC yog nyob ntawm cov kev cai tshwj xeeb xws li solubility, viscosity, firal stability, thiab kev txiav txim siab ruaj khov. Thaum CMC muaj cov dej solubility siab thiab cov kua dej zoo heev, HPMC txawj nyob hauv zaj duab xis, thermal stability, thiab adhesion. Nkag siab txog cov yam ntxwv tshwj xeeb ntawm txhua lub cellulose kev xaiv yog qhov tseem ceeb rau kev xaiv cov khoom lag luam uas tsim nyog tshaj plaws rau cov kev ua tau zoo thiab kev ua tau zoo.
Lub Sijhawm Post: Feb-18-2025