HydroxyPropyyl methylcellose (HPMC) yog polymer muab tau los ntawm cellulose thiab feem ntau siv hauv ntau yam lag luam, suav nrog cov tshuaj, thiab khoom noj haus. Nws yog dej-soluble polymer uas tuaj yeem yooj yim hydrated los ua cov tshuaj uas yog hom phiaj.
1. Nkag Siab HPMC:
Ua ntej sib tham txog cov txheej txheem hydration, nws yog qhov tseem ceeb kom nkag siab txog cov khoom ntawm HPMC. HPMC yog ib nrab hluavtaws polymer uas yog hydrophilic, lub ntsiab lus nws muaj kev muaj zog rau dej. Nws ua pob tshab, hloov tau, thiab ruaj khov gels thaum hydrated thaum hydrated, ua rau nws haum rau ntau cov ntawv thov.
2. Cov txheej txheem hydration:
Cov dej ntawm HPMC cuam tshuam cov hmoov polymer hauv dej thiab tso cai rau nws o tov lossis gel. Ntawm no yog ib tug kauj ruam-rau-kauj ruam qhia rau hydrating HPMC:
Xaiv txoj cai qib:
HPMC muaj nyob rau hauv ntau qib nrog hnyav molecular hnyav thiab viscosity qib. Kev xaiv ntawm qib tsim nyog yog nyob ntawm qhov xav tau viscosity ntawm kev daws teeb meem kawg lossis gel. Cov qhab nia hnyav dua cov qhab nia feem ntau ua rau muaj txiaj ntsig zoo nkauj daws teeb meem.
Npaj dej:
Siv cov dej lossis cov dej hrmc kom paub meej txog qhov tsis muaj kev tsis muaj peev xwm uas yuav cuam tshuam rau cov khoom ntawm kev daws. Qhov kub ntawm cov dej kuj tseem tuaj yeem cuam tshuam cov txheej txheem hydration. Feem ntau, siv chav tsev kub tau txaus, tab sis cua sov cov dej me ntsis tuaj yeem nrawm cov txheej txheem hydration.
Dispersion:
Maj mam nphoo HPMC hmoov rau hauv cov dej thaum nplawm tsis tu ncua los tiv thaiv kev tsim cov koog tas. Nws yog qhov tseem ceeb ntxiv rau cov polymer maj mam ua kom ntseeg tau tias muaj kev sib cais uas tsis sib xws thiab tiv thaiv agglomeration.
Hydration:
Txuas ntxiv nplawm qhov sib xyaw kom txog thaum txhua tus HPMC hmoov tau dispersed hauv dej. Tso cai rau qhov sib xyaw kom sawv ntsug rau lub sijhawm txaus kom tso cai rau cov polymer hais los o thiab hydrate tag nrho. Lub sijhawm hydration tuaj yeem sib txawv nyob ntawm cov yam xws li kub, polymer qib, thiab xav tau viscosity.
Nws thiab homogenization:
Tom qab lub sijhawm hydration, sib tov cov tshuaj kom huv kom ntseeg tau cov kev sib dhos. Nyob ntawm daim ntawv thov, sib xyaw ntxiv lossis homogenization yuav tsim nyog kom ua tiav qhov kev xav tau zoo thiab tshem tawm cov lumps ntxiv.
Kho cov ph thiab ntxiv (yog tias tsim nyog):
Nyob ntawm daim ntawv thov tshwj xeeb, koj yuav tsum tau kho cov ph ntawm cov tshuaj uas siv cov kua qaub lossis hauv paus. Tsis tas li ntawd, lwm yam ntxiv xws li cov tshuaj ntxiv, cov tshuab yas, lossis cov thickeners yuav muab tso rau hauv kev daws teeb meem ntawm theem no los txhim kho nws txoj kev ua tau zoo lossis kev ruaj ntseg.
Lim (yog tias tsim nyog):
Hauv qee kis, tshwj xeeb hauv cov ntawv thov kom zoo nkauj, lim cov khoom siv hydrement yuav tsim nyog los tshem tawm cov khoom siv tsis zoo thiab tsis muaj txiaj ntsig.
3. Kev thov hydrated hpmc:
Hydrated HPMC pom cov ntawv thov hauv ntau qhov kev lag luam:
- Kev lag luam kws tshuaj: hauv cov tshuaj yeeb yaj kiab, hydrated HPMC yog siv los ua tus neeg sawv cev HPMC yog siv, binder, thiab zaj duab xis-sib sau tus neeg sawv cev hauv cov tshuaj ntsiav.
- Kev lag luam kom hniav zoo nkauj: HPMC muaj feem ntau siv hauv cov tshuaj pleev ib ce xws li cream, muaj cov kua pleev, tawv ncauj, thiab cov yeeb yaj kiab-ua yeeb yaj kiab.
- Kev lag luam khoom noj: hauv kev lag luam khoom noj khoom haus, hydrated HPMC yog siv los ua cov tuab, emulsifer, thiab stabilizer, hnav ris tsho, thiab khoom noj siv mis.
- Kev tsim kho kev tsim kho: HPMC tau siv rau hauv cov khoom siv xws li Mortars, grouts, thiab vile cov nplaum los txhim kho kev ua haujlwm, kev ua kom dej, thiab cov nplaum.
4. Xaus:
HydroxyPropyyl Metylcellulose (HPMC) yog ib qho yooj yim hydrated los tsim cov kev daws teeb meem lossis cov gels. Cov txheej txheem hydration koom nrog dispmc hmoov hauv dej, cia nws mus rau swell, thiab sib xyaw kom ua tiav cov kev sib txuam. Hydrated HPMC pom cov ntawv thov hauv ntau kev lag luam, suav nrog cov tshuaj, suav nrog cov tshuaj tshuaj, tshuaj pleev ib ce, khoom noj. Nkag siab txog cov txheej txheem hydration thiab cov khoom ntawm HPMC yog qhov tseem ceeb rau kev ua kom ua tau zoo rau nws cov kev ua tau zoo hauv cov ntawv thov sib txawv.
Lub Sijhawm Post: Mar-19-2024