Thaum xaivHydroxyPropyyl methylcellulose (HPMC), ntsuas nws cov dej rov qab yog qhov ntsuas tau tseem ceeb, tshwj xeeb hauv kev siv hauv kev tsim kho, xws li kev ua yeeb yam, sib xws thiab ruaj khov.
1. Molecular qauv thiab qhov hnyav molecular
Qhov hnyav molecular ntawm kev ntxhov siab ®hpmc thiab nws cov qauv molecular ncaj qha rau nws cov dej khaws cia. Feem ntau, siab dua cov molecular hnyav ntawm HPMC, qhov zoo dua cov dej khaws cia. HPMC nrog lub cev hnyav dua muaj qhov sib txuas ntxiv, uas tuaj yeem nqus dej ntau dua thiab ua cov qauv gel ruaj khov dua.
High molecular hnyav HPMC: nws tau txo solubility hauv dej, tab sis tsim nyog tau khaws cov dej khov, xws li lub tsev tshuaj khib, txheej, thiab lwm yam.
Cov roj tsis muaj zog tsawg HPMC: Kev khaws dej tsis zoo, tab sis zoo dua rau cov qauv uas yuav tsum tau solidification lossis nrawm nrawm.
2. Hydroxypropyl cov ntsiab lus
Hydroxypropyl cov ntsiab lus hais txog cov ntsiab lus ntawm hydroxypropylopyl pawg hauv HPMC lwg me me, feem ntau qhia raws li qhov feem pua loj. Cov ntsiab lus ntawm hydroxypropyl cuam tshuam rau solubility, viscosity thiab dej khaws cia ntawm HPMC.
High Hydroxypropyl Cov Ntsiab Lus HPMC: Yuav ua tau zoo dua yaj nyob rau hauv dej thiab nce kev khiav dej, yog li nws muaj tshwj xeeb rau kev siv hauv thaj chaw noo noo.
Tsawg Hydroxypropyl Cov Ntsiab Lus HPMC: Kev ua haujlwm tsis zoo, tab sis tej zaum yuav muaj ntau dua hauv qee cov ntawv thov xws li tuab paste paste.
3. Solubility
Lub solubility ntawm HPMC yog ib qho tseem ceeb hauv kev txiav txim siab nws cov dej khaws cia. Zoo solubility pab nws kom muaj tusyees dispersed hauv dej, yog li exerting ib qho kev ua kom muaj dej zoo dua.
Sov dej so solubility: feem ntau hpmcs yog yooj yim soluble hauv dej sov. Tus yaj HPMC tuaj yeem tsim cov tshuaj colloidal, uas pab nws ua kom muaj cov xis nyob sab xis thiab tiv thaiv cov dej los ntawm kev ua pa sai sai.
Cov dej txias dej solubility: rau cov khoom lag luam uas yuav tsum tau siv rau hauv qhov chaw kub tsawg, hpmc nrog cov dej txias zoo dua yog qhov haum dua. Hom HPMC no tuaj yeem tshem tawm sai sai ntawm chav sov lossis kub kom ntseeg tau tias dej tawm thaum tsim kho.
4. Paus Loj Tshaj Tawm
Lub particle loj ntawm HPMC cuam tshuam ncaj qha cuam tshuam nws cov kev sib cais thiab kev ua haujlwm hauv dej. HPMC nrog cov ntaub ntawv Hermc nrog cov dej nrawm dua thiab tuaj yeem tso dej nrawm nrawm hauv cov kab ke, yog li txhim kho nws cov dej khaws cia. Txawm hais tias HPMC nrog cov khoom loj me me txo qis qis, nws tuaj yeem tsim cov dej khov ntau hauv cov kab ke, yog li cov dej khaws cia yog ntau ruaj.
Cov nplua me me particle HPMC: Tsim nyog rau cov ntawv thov uas yuav tsum tso tawm dej nrawm nrawm, thiab haum rau cov tshuaj khib nyiab sai sai, thiab cov nplaum uas yuav tsum tau ua haujlwm dua.
Coarse Party HPMC: Qhov tsim nyog hauv cov xwm txheej uas yuav tsum muaj kev cia siab ntev, xws li ntev Maas slurry, binders hauv tsev cov ntaub ntawv, thiab lwm yam.
5. Cov ntsiab lus noo noo
Cov dej noo cov ntsiab lus ntawm HPMC tseem yuav cuam tshuam nws cov dej kom ua haujlwm. Ntau dhau noo tuaj yeem ua rau HPMC hloov nws qhov kev ua tau zoo thaum lub sijhawm ntim thiab siv. Yog li ntawd, qhuav HPMC feem ntau muaj lub neej ntev dua thiab ua tau ruaj khov. Thaum xaiv, them sai sai rau nws cov ntsiab lus ya raws kom tsis txhob muaj dej noo ntau dhau ntawm kev siv cov nyhuv siv.
6. Kub tsis kam
Cov dej khaws cia ntawm HPMC kuj muaj feem xyuam nrog nws qhov kub tsis kam. Qee cov ntawv thov yuav xav tau HPMC kom tswj tau cov dej khov nyob rau ntawm ntau dua kub. Piv txwv, cov duab kos duab kos duab yuav xav tau siv thaum kev tsim kho. Xaiv HPMC nrog lub zog kub ua tau tuaj yeem ua kom cov dej zoo thaum tsim kho thiab tiv thaiv cov khoom los ntawm kev ziab nrawm dhau.
7. Kev ruaj khov
Kev ruaj ntseg ntawm HPMC tseem yuav cuam tshuam nws cov dej khaws cia raws li cov xwm txheej hauv p thiab qhov kub thiab txias. HPMC ruaj khov HPM tuaj yeem tswj kav dej ntev rau hauv ntau qhov chaw, tshwj xeeb tshaj yog cov muaj zog alkaline lossis acidic ib puag ncig xws li cement lossis gypsum. Nws yog qhov tseem ceeb los xaiv HPMC nrog muaj zog ruaj khov. Yog tias cov tshuaj ruaj khov ntawm HPMC yog neeg pluag, nws cov dej cia yuav txo nyob rau lub sijhawm, cuam tshuam rau qhov kev ua tau kawg.
8. Ntxiv thiab Kev Kho Mob Deg
Qee qhov kev kho mob HPMC yuav ntxiv qee txoj kev kho mob tshwj xeeb lossis kev sib ntxiv ntawm cov txheej txheem ntau lawm los txhim kho lawv cov dej khaws cia. Piv txwv li, los ntawm kev ntxiv qee cov polymers lossis colloids, lub peev xwm kav dej ua kom muaj peev xwm txhim kho HPMC tuaj yeem txhim kho ntxiv. Ib qho ntxiv, qee cov khoom lag luam yuav txhim kho lawv cov tshuaj los ntawm kev ntxiv cov tshuaj sawv cev los tiv thaiv kev ua kom yooj yim thaum siv.
9. Kuaj cov qauv
Thaum xaiv HPMC, qee txoj hauv kev sim tshuaj yuav siv los soj ntsuam nws cov dej khaws cia. Piv txwv li:
Kev ntsuas dej uas haum dej: txiav txim cov dej uas HPMC tuaj yeem nqus tau nyob rau qee lub sijhawm.
Dej Tuav Txoj Kev Ntsuas Muaj Peev Xwm: Ntsuas lub peev xwm ntawm kev txhawj xeeb ntawm kev txhawj xeeb ®hpmc los khaws dej thaum sib xyaw los ntawm kev sim ua haujlwm.
Viscosity Kev txiav txim: viscosity ncaj qha cuam tshuam nws cov hydration. Nws cov dej rov qab yog kev txiav txim los ntawm viscosity. HPMC nrog cov viscosity ntau dua feem ntau muaj dej ua kom zoo dua.
Thaum xaiv txoj caiHPMC, nws yog ib qho tsim nyog yuav tsum tau txiav txim siab ntau yam xws li cov khoom siv hluav taws xob, cov khoom siv kub, xaiv cov khoom sib txawv ntawm HPMC kom paub meej tias nws Kev ua tau zoo hauv dej khaws chaw ua raws li qhov yuav tsum tau ua. Tshwj xeeb tshaj yog hauv kev tsim kho thiab ntaub ntawv khaws cia, cov dej tuav tseg ntawm HPMC tsis yog cuam tshuam rau kev tsim kho cov nyhuv, tab sis nws yuav tsum tau xaiv nrog ceev faj txog kev ceev faj.
Lub Sijhawm Post: Feb-21-2025