HPMC sawv rau hydroxypropyl methylulose, uas yog ib qho tsis muaj kev lag luam hauv kev lag luam xws li cov chaw ua tshuaj, kev tsim kho, cov tshuaj pleev zaub mov, thiab textiles. Lo lus "qib HPMC" yog hais txog cov kev sib txawv lossis cov qhab nia ntawm hydroxypropylulose, uas tau txiav txim siab raws li cov kev hnyav me, viscosity, hloov chaw, thiab lwm yam khoom siv lub cev. Nkag siab txog HPMC cov qhab nia yog qhov tseem ceeb rau kev xaiv hom HPMC zoo rau cov ntawv thov tshwj xeeb.
1. Molecular hnyav thiab viscosity:
Molecular hnyav thiab viscosity yog ob qhov tseem ceeb tseem ceeb uas txiav txim siab cov kev ua tau zoo ntawm HPMC hauv ntau yam kev siv. Lub cev hnyav dua HPMC nyhav kom muaj cov viscosity ntau dua, uas cuam tshuam rau cov khoom xws li thickening, yeeb yaj kiab tsim, thiab dej khaws cia.
Cov qib sib txawv ntawm HPMC yog qhov txawv txav raws li lawv cov roj ntsha hnyav thiab cov viscosity. Piv txwv li, cov qib qis yog tsim nyog rau cov ntawv thov yuav tsum tau ua kom muaj cov ntaub ntawv txhim kho thiab cov khoom siv thickening.
2. Hloov chaw (DS):
Hloov pauv ntawm HPMC yog hais txog qhov uas hydroxyl pawg ntawm lub cellulose saw tau hloov nrog hydroxypropyl thiab methyl pawg. Qhov ntsuas no cuam tshuam cov khoom xws li solubility, thermal gelation, thiab zaj duab xis-tsim muaj peev xwm.
Cov qib kawm HPMC nrog Varying hloov cov qib hloov kho cov neeg ua haujlwm sib txawv. Hloov dua degrees feem ntau ua rau muaj kev txhim kho cov dej solubility thiab ua yeeb yaj kiab tsim, ua rau lawv haum rau cov ntawv thov tshuaj thiab pleev xim.
3. Pictle Loj thiab Purity:
Qhov loj me thiab muaj kev coj dawb huv kuj tseem yog qhov kev txiav txim siab tseem ceeb thaum muab cov qhab nia HPMC qib. Cov me me qhov ntau thiab tsawg ua rau kom zoo dua dispersibility thiab kev sib dhos hauv cov qauv, thaum ntau dua cov qib siab huv ntau yam kom sib xws thiab ua tau zoo.
Cov qhab nia sib txawv ntawm HPMC tuaj yeem hais raws li qhov loj me faib thiab qib purity, ua kom muaj kev sib haum xeeb nrog cov txheej txheem tsim kev tsim khoom thiab cov kev xav tau kawg.
4. Kev tswj hwm ua raws li:
HPMC Cov Chav Kawm tseem yuav raug faib raws li lawv txoj kev ua raws li cov qauv kev cai thiab cov kev cai hauv kev lag luam sib txawv. Piv txwv li, cov tshuaj-cov ntaub ntawv kawm ntawv HPMC yuav tsum tau ntsib cov qauv hlua ua kom muaj kev nyab xeeb, kev ua tau zoo, thiab ua tau zoo hauv cov tshuaj tsim.
Ua raws li cov kev cai thiab cov qauv, xws li cov chaw ua haujlwm ntawm HPMC, yog qhov tseem ceeb rau kev xaiv HPMC uas tsim nyog HPMC, yog cov khoom lag luam HPMC tsim nyog, khoom noj, thiab lwm yam kev siv.
5. Cov khoom tshwj xeeb thiab cov ntawv thov:
Qee cov qhab nia HPMC tau tsim nrog cov khoom tshwj xeeb kom tau raws li cov ntawv thov xav tau. Piv txwv li, HPMC cov qhab nia nrog kev tswj cov khoom tso tawm tau siv hauv Tshuaj Tshuaj Siv Tshuaj rau Excel Tshuaj Tso Tawm thiab txhim kho kev kho cov txiaj ntsig.
Lwm cov qib HPMC tshwj xeeb tuaj yeem tsim cov nplaum, lossis noo noo tiv taus, ua rau lawv tsim nyog rau kev siv cov nplaum, thiab cov khoom siv.
6. Kev sib haum thiab cov qauv kev xav:
Cov qib ntawm HPMC qib yog cuam tshuam los ntawm kev sib xyaw nrog lwm cov khoom xyaw thiab tsim cov kev xav tau. Cov qib sib txawv ntawm HPMC tuaj yeem cuam tshuam sib txawv nrog lwm cov kev sib txawv, cov kuab tshuaj, thiab kev ua haujlwm, cuam tshuam tag nrho cov khoom lag luam thiab kev ruaj ntseg ntawm cov khoom kawg.
Kev txiav txim siab tsim qauv xws li pH rhiab heev pH rhiab heev, thiab kev sib zog nrog kev tsim cov txheej txheem kev tsim kho lub luag haujlwm ntawm HPMC tsim nyog HPMC tsim nyog daim ntawv thov.
7. Ib puag ncig thiab cov khoom siv hluav taws xob:
Nce ntxiv, ib puag ncig thiab kev txiav txim siab ruaj khov yog cuam tshuam rau kev xaiv HPMC cov qib. Cov tuam txhab tsim cov khoom tsim tawm tuaj yeem ua cov qib tsim tawm los ntawm cov khoom siv tau rov ua dua tshiab thoob plaws lawv txoj kev ua haujlwm.
Kev ua kom muaj cov kev coj ua cov khoom noj muaj tseeb, biodegristability, thiab rov ua dua yog kev xaiv HPMC hneev taw thiab kev cuam tshuam ib puag ncig thiab ib puag ncig.
8. Kev Lag Luam Zoo thiab Kev Tsim Kho:
HPMC kev ua lag luam yog qhov hloov pauv ntawm HPMC yog qhov kev tshawb fawb txog kev tshawb fawb thiab kev txhim kho tsav tsheb ua kom tsim cov qib tshiab hauv cov qib tshiab thiab cov qauv tshiab. Cov qauv lag luam xws li cov lus thov kom huv, cov khoom lag luam muaj txiaj ntsig, thiab cov qib kev ua kom zoo nkauj ntawm HPMC cov qhab nia nrog kev txhim kho cov khoom thiab kev ua tau zoo.
Cov neeg tsim khoom lag luam txuas ntxiv mus ua kom tau raws li cov ntaub ntawv HPMC thiab kev siv cov khoom siv tshwj xeeb, ntim khoom siv kom muaj zog, thiab kev siv tshuaj tsis muaj zog, thiab kev siv tshuaj tsis muaj zog, thiab kev siv tshuaj tsis huv, thiab siab siv tshuaj yeeb.
Xaus:
Molecular hnyav, viscosity, hloov chaw, particle, kev cai lij choj yog qhov kev txiav txim siab tseem ceeb thaum xaiv HPMC tsim nyog HPMC uas tsim nyog HPMC.
Nkag siab txog HPMC cov qhab nia yog qhov tseem ceeb rau cov kws sau ntawv, cov kws tshawb nrhiav, thiab cov kws tsim khoom lag luam, kom tau kev xaiv cov khoom lag luam zoo, thiab chaw nyob ua haujlwm ntxiv. Los ntawm kev saib xyuas cov khoom tshwj xeeb thiab lub peev xwm ntawm cov qhab nia HPMC ntau, cov neeg muaj peev xwm ua tau cov txiaj ntsig HPMC ntau yam kom tau txais txiaj ntsig zoo hauv lawv cov kev lag luam thiab kev siv.
Lub Sijhawm Post: Mar-15-2024