HPMC (HydroxyPropyyl methylcellulose) yog cov khoom siv ntau polymerctional polymer dav siv nyob rau hauv kev tsim kho, chaw muag tshuaj, zaub mov, tshuaj pleev ib yam thiab lwm thaj teb. Raws li lub cellulose ether, HPMC muaj solubility zoo, thickening, zaj duab xis-ua thiab yog li ntawd tau ua rau ntau hom kom haum rau ntau yam kev xav tau.
1. Kev faib tawm los ntawm viscosity
HPMC muaj nyob rau hauv ntau hom viscosies thiab feem ntau yog qhia raws li lub viscosity ntawm MpaSposascal vib nas this). Raws li cov qib viscosity txawv, HPMC tuaj yeem faib ua cov hom qis, nruab nrab thiab qib viscosity.
Tsis muaj viscosity HPMC: Qes viscosity HPMC feem ntau yog siv rau hauv cov ntawv thov uas xav tau cov tshuaj zoo thiab permeability, xws li cov tshuaj ntxiv thiab tshuaj ntxiv cov tshuaj thiab cov khoom noj ntxiv zaub mov. Nws txhim kho cov kev sib txuam ntawm kev daws teeb meem yam tsis muaj viscosity ntawm cov kua.
Nruab Nrab Viscosity HPMC: Nruab nrab viscosity HPMC feem ntau siv nyob rau hauv cov ntaub ntawv tsim tsev, tsho loj thiab qee cov tshuaj pleev ib ce. Nws tuaj yeem muab cov nyhuv thickenate thickenate, txhim kho cov khoom adhesion thiab zaj duab xis-ua cov khoom, thaum tswj lub ntsej muag me me.
High viscosity HPMC: Muaj feem ntau siv nyob rau hauv cov ntawv thov thickening thiab ruaj khov, xws li kev tso tawm cov ntsiav tshuaj thiab kev tsim cov khoom lag luam. Nws tuaj yeem ua kom muaj qhov ua kom viscosity ntawm qhov qis dua thiab tsim cov kua zaub ruaj khov lossis cov yeeb yaj kiab.
2. Kev faib tawm los ntawm cov qib hloov chaw
Cov tshuaj lom neeg ntawm HPMC muaj feem cuam tshuam nrog lawv qib kev hloov pauv, uas yog qhov nruab nrab ntawm hydroxypropyl thiab methyl chaw ib chav nyob zoo. Cov qib sib txawv ntawm kev hloov pauv cuam tshuam cuam tshuam rau cov solubility, gel kub, thiab zaj duab xis-ua cov khoom ntawm HPMC.
Tus neeg mob qis HPMC: chaw qis-chaw HPMC feem ntau ua rau muaj peev xwm siab dua gel kub thiab muaj solubility zoo dua ntawm tsis kub. Hom no feem ntau yog siv rau hauv cov ntawv thov uas xav tau cov khoom cua sov, xws li qee cov ntaub ntawv tshwj xeeb hauv cov khoom lag luam thiab khoom noj.
HPMC nrog nruab nrab qib ntawm qhov chaw hloov chaw: HPMC nrog nruab nrab qib neeg hloov pauv tau ntau dua cov khoom siv thiab siv dav dav thiab cov tshuaj pleev ib ce. Lawv cov gel kub thiab solubility yog qhov me me, tso cai rau kev ua tau ruaj khov nyob hauv ntau qhov chaw ib puag ncig.
Kev hloov HPMC: Muaj kev hloov pauv siab heev HPMC muaj qhov qis dua gel kub thiab muaj feem ntau yuav tsim cov kua txiv lossis cov yeeb yaj kiab ntawm qhov kub tsawg. Hom HPMC feem ntau yog siv rau hauv cov ntawv thov uas yuav tsum tau ceev gel lossis zaj duab xis ntawm cov tshuaj ntsiav, xws li cov tshuaj ntsiav tshuaj, xws li cov tshuaj pleev pob txha lossis khoom noj khoom haus.
3. Kev Sib Tw Los Ntawm Solubility
Lub solubility ntawm HPMC cuam tshuam los ntawm nws hom hloov chaw thiab muaj zog ntau, thiab tuaj yeem faib ua cov dej txias hom thiab dej kub soluble hom.
Dej Txias Da Dej Soluble HPMC: Hom HPMC no tau siv cov dej khov uas feem ntau siv los ua cov ntaub ntawv hauv tsev, cov ntaub ntawv tsim kho kom muab cov nyhuv tuab tuab.
Dej kub soluble HPMC: Hom HPMC no yuav tsum tau yaj nyob rau hauv dej kub, thiab kev daws yuav tsim cov pob tshab gel tom qab txias. Feem ntau yog siv nyob rau hauv cov chaw uas yuav tsum thermal stability, xws li kub-nqus txheej lossis ua zaub mov noj.
4. Kev faib tawm los ntawm cov chaw thov
Raws li cov ntawv thov tshwj xeeb, HPMC kuj tseem tuaj yeem muab faib ua cov hom sib txawv xws li kev tsim kho, chaw muag tshuaj, zaub mov thiab tshuaj pleev ib ce.
HPMC rau kev tsim kho: hauv kev tsim kho, HPMC yog siv hauv cov xis mas cug, putty hmoov, gypsum khoom thiab pobzeb cov khoom nplaum. Nws tuaj yeem txhim kho cov dej khaws cia, tawg kom tiv thaiv thiab kev tsim kho cov khoom siv, thaum txhim kho cov khoom zoo tom qab kev tsim kho.
HPMC rau Kev Siv Tshuaj Ntsuam Xyuas: HPMC siv nyob rau hauv lub tshuaj lag luam kws tshuaj yuav tsum muaj siab, thiab feem ntau siv los ua cov neeg sawv cev thiab cov tshuaj ntsiav rau cov ntsiav tshuaj. Nws tuaj yeem hloov kho cov tshuaj tso tawm thiab txhim kho cov tshuaj ruaj khov.
Cov khoom noj-qib HPMC: Cov Khoom Noj HPMC: Cov Khoom Noj HPMC yuav tsum tau ua raws li cov khoom lag luam ntxiv rau cov zaub mov ntxiv, emulsifiers thiab stabilizers hauv cov zaub mov. Nws tuaj yeem txhim kho qhov saj, ruaj khov thiab txee lub neej ntawm cov zaub mov, thiab muaj qhov zoo thermal stability.
HPMC rau tshuaj pleev ib ce: hauv tshuaj pleev ib ce, HPMC yog siv los ua cov tuab tuab, emulsifier thiab zaj duab xis thiab lwm yam khoom noj. Nws tuaj yeem txhim kho lub piscosity, ruaj khov thiab siv hnov ntawm cov khoom, thaum ua kev maj mam thiab tsis yog-khaus rau daim tawv nqaij.
5. Kev faib tawm los ntawm cov haujlwm tshwj xeeb
Ntxiv rau cov kev faib tawm saum toj no, HPMC kuj tseem tuaj yeem ua rau hom kev tshwj xeeb, xws li hom waterproof, kev kub siab hom, thiab lwm yam.
Waterproof HPMC: Hom HPMC no yog siv los ua tus neeg sawv cev dej hauv kev tsim kho thiab huab cua txhim kho cov khoom siv thiab txuas ntxiv nws lub neej pabcuam.
Cov cua kub siab tiv taus HPMC: Qhov kub tiv thaiv HPMC: Kev kub siab tiv thaiv HPMC tuaj yeem siv los tswj kev ua tau ruaj khov nyob ib puag ncig thiab cov khoom siv hluav taws xob kub.
Low-as-tshauv HPMC: Hom HPMC no tshwj xeeb yog tsim nyog rau cov ntawv thov uas yuav tsum muaj cov chaw ua tshuaj thiab khoom noj ntxiv, thiab tuaj yeem txo cov hmoov tshauv.
Qhov sib txawv ntawm HPMC tso cai rau nws yuav yoog rau cov kev xav tau muaj kev lag luam sib txawv. Los ntawm kev kho nws cov viscosity, qib hloov pauv thiab solubility, HPMC tuaj yeem tsim tau rau cov ntawv thov sib txawv, yog li ua lag luam, khoom noj khoom haus, cov tshuaj pleev ib ce thiab lwm thaj teb.
Lub Sijhawm Post: Feb-17-2025