Qhov kub ntawm qhov kub ntawm hydroxy Ethyl cellulose tshuaj

Tus cwj pwm ntawm hydroxyethyl cellulose (HEC) cov kev daws teeb meem yog cuam tshuam los ntawm qhov kub hloov. Nov yog qee qhov cuam tshuam ntawm qhov kub ntawm HEC kev daws teeb meem:

1. Viscosity: viscosity ntawm HEC cov kev daws teeb meem feem ntau txo qis li kub nce ntxiv. Qhov no yog vim qhov kev sib cuam tshuam txo ntawm HEC lwg me me ntawm qhov kub siab dua, ua rau qis viscosity. Conversely, viscosity nce li qhov kub txo qis vim tias molecular kev sib cuam tshuam ua kom muaj zog.
2. Solubility: HEC yog soluble hauv dej hla ntau yam kub. Txawm li cas los xij, tus nqi ntawm kev sib txawv yuav txawv nrog qhov kub thiab txias, nrog cov ntsuas kub siab dua feem ntau txhawb kev sib txawv sai dua. Thaum tsis tshua muaj kub heev, hec cov kev daws teeb meem yuav dhau los ua cov xim muaj ntau lossis txawm tias gel, tshwj xeeb tshaj yog nyob rau hauv ntau dua.
3. Gelation: Hec cov kev daws teeb meem tuaj yeem tsim cov gelation ntawm cov khoom siv kub tsawg, sib sau cov qauv gel zoo li nce ntxiv. Qhov kev coj tus cwj pwm kev txhawb nqa no tau thim rov qab thiab tuaj yeem pom hauv cov kev daws teeb meem, tshwj xeeb ntawm qhov kub thiab txias hauv qab gelation point.
4. Thermal Stability: Hec cov kev daws teeb meem zoo ua kom zoo thermal stability dhau ntau qhov ntau ntau. Txawm li cas los xij, ntau cov cua sov tuaj yeem ua rau kev mob siab ntawm cov ntaub pua npab, uas ua rau muaj kev txo qis hauv viscosity thiab kev hloov pauv hauv cov daws teeb meem. Nws yog qhov tseem ceeb kom tsis txhob muaj lub zog ntev kom muaj kev tswj hwm kev sib raug zoo.
5. Theem sib cais: kev hloov pauv kub tej zaum yuav tsis muaj kev daws teeb meem hauv kev daws teeb meem hauv hec, tshwj xeeb tshaj yog nyob ntawm qhov chaw txwv solubility. Qhov no tuaj yeem ua rau kev tsim cov txheej txheem ob-theem, nrog hec nag los tawm ntawm kev daws teeb meem ntawm cov kev daws teeb meem tsawg.
6. Rheological cov khoom: kev coj ua tus cwj pwm ntawm HEC yog qhov kub-nyob. Kev hloov pauv hauv qhov kub tuaj yeem cuam tshuam rau kev coj tus cwj pwm khiav, shear thinning cov khoom, thiab thixotropic cwj pwm ntawm HEC kev daws teeb meem, cuam tshuam lawv daim ntawv thov thiab kev ua cov yam ntxwv thiab kev ua cov yam ntxwv.
7. Cov nyhuv ntawm cov ntawv thov: Qhov kev hloov hnyav tuaj yeem cuam tshuam kev ua haujlwm ntawm HEC hauv ntau yam kev siv. Piv txwv li, hauv cov txheej txheem thiab cov nplaum, kev hloov pauv hauv viscosity thiab kev coj ua gelation yuav cuam tshuam rau cov khoom thov xws li ntws, ntsuas nyiaj, thiab tacking. Hauv cov tshuaj tsim qauv, qhov kub thiab txias rhiab heev yuav cuam tshuam cov tshuaj tso tawm cov tshuaj lom thiab ntau npaum li cas cov khoom ruaj khov.

Kub ua lub luag haujlwm tseem ceeb hauv kev coj cwj pwm ntawm hydroxyethyl cellulose (HEC) kev coj ua, kev coj cwj pwm, thiab kev thov ua haujlwm. Nkag siab cov teebmeem no yog qhov tseem ceeb rau kev ua kom ua tau zoo ntawm HC-raws li cov qauv hauv kev lag luam sib txawv.