Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv hluav taws xob ntau yam siv dav hauv ntau lub lag luam vim nws cov khoom tshwj xeeb thiab kev ua haujlwm. Qhov no semi-synthetic polymer yog muab los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa. HPMC yog tsim los ntawm kev hloov kho cellulose los ntawm etherification ntawm propylene oxide thiab methyl chloride. Qhov tshwm sim polymer nthuav tawm ntau yam ntawm cov khoom tsim nyog, ua rau nws haum rau ntau yam kev siv. Qhov kev siv ntau yam no tuaj yeem raug ntaus nqi rau nws cov yeeb yaj kiab-tsim muaj peev xwm, thickening zog, ruaj khov nyob rau hauv ib puag ncig sib txawv thiab biocompatibility.
1. Kev lag luam kws tshuaj
A. Kev tswj qhov ncauj:
Tswj Kev Tso Tawm: HPMC feem ntau yog siv rau kev tswj cov tshuaj tso tawm hauv cov tshuaj formulations. Nws tsim cov matrix ruaj khov uas tso cai rau kev tso tawm cov tshuaj nyob rau lub sijhawm ntev, yog li txhim kho kev kho mob thiab kev ua raws li tus neeg mob.
Tablet binder: HPMC ua raws li cov ntsiav tshuaj zoo thiab pab hauv kev tsim cov ntsiav tshuaj nrog cov khoom siv zoo thiab cov khoom tawg.
Suspension Agent: Nyob rau hauv cov ntaub ntawv ua kua, HPMC ua raws li tus neeg sawv cev ncua, tiv thaiv cov khoom los ntawm kev daws teeb meem thiab ua kom muaj kev sib faib ntawm cov tshuaj.
B. Ophthalmic applications:
Viscosity Modifier: HPMC yog siv los kho cov viscosity ntawm qhov muag tee kom muab lubrication kom zoo thiab xyuas kom lub sij hawm sib cuag ntev ntawm lub qhov muag.
Cov yeeb yaj kiab yav dhau los: siv los tsim lub qhov muag qhov ncauj qhov ntswg lossis cov ntxig rau kev tso tawm cov tshuaj hauv lub qhov muag.
C. Kev npaj tshwj xeeb:
Gel Tsim: HPMC yog siv los npaj cov tshuaj pleev ib ce uas muab cov tawv nqaij du, tsis muaj roj thiab txhim kho cov neeg mob ua raws.
Daim tawv nqaij daim nplaum nplaum: Hauv transdermal tshuaj xa cov tshuab, HPMC muab cov khoom nplaum thiab tswj kev tso tshuaj los ntawm daim tawv nqaij.
D. Biodegradable Implants:
Cov khoom siv Scaffold: HPMC yog siv los tsim biodegradable implants uas tswj kev tso tawm cov tshuaj hauv lub cev, tshem tawm qhov xav tau kev phais tshem tawm.
2. Kev tsim kho kev lag luam
A. Pobzeb Adhesive:
Thickener: HPMC yog siv los ua cov thickener hauv cov nplais nplaum los muab cov kev xav tau sib xws rau daim ntawv thov yooj yim.
Kev tuav dej: Nws txhim kho cov dej tuav ntawm cov nplaum, tiv thaiv nws kom qhuav sai sai thiab ua kom muaj kev kho kom zoo.
B. Cement mortar:
Kev ua haujlwm tau zoo: HPMC ua raws li kev hloov kho rheology los tiv thaiv kev sib cais thiab txhim kho kev sib raug zoo, yog li txhim kho kev ua haujlwm ntawm cov cement-based mortars.
Kev tuav dej: Zoo ib yam li cov nplais nplaum, nws pab khaws cov dej noo hauv cov cementitious sib tov, tso cai rau kom muaj dej kom zoo thiab txhim kho lub zog.
3. kev lag luam zaub mov
A. Khoom noj khoom haus additives:
Thickeners thiab Stabilizers: HPMC yog siv los ua cov thickener thiab stabilizer nyob rau hauv ntau yam khoom noj khoom haus, xws li kua ntses, hnav khaub ncaws thiab khoom qab zib.
Kev hloov rog rog: Hauv cov zaub mov tsis muaj rog lossis tsis muaj rog, HPMC tuaj yeem siv los ua cov rog hloov los txhim kho kev ntxhib los mos thiab qhov ncauj.
4. Kev lag luam tshuaj pleev ib ce
A. Cov khoom siv tu tus kheej:
Viscosity Control: HPMC yog siv rau hauv cov tshuaj pleev ib ce xws li tshuaj pleev ib ce thiab cream los tswj viscosity thiab txhim kho kev ntxhib los mos.
Cov yeeb yaj kiab qub: Pab tsim cov yeeb yaj kiab hauv cov khoom tu plaub hau, muab cov txheej txheem tiv thaiv.
5. Lwm yam kev siv
A. Printing number case:
Thickener: HPMC yog siv los ua cov thickener hauv dej-raws li cov ntawv luam ntawv los pab ua kom tiav qhov xav tau sib xws thiab ruaj khov ntawm tus number case.
B. Adhesive khoom:
Txhim kho viscosity: Hauv cov ntawv nplaum, HPMC tuaj yeem muab ntxiv los txhim kho viscosity thiab txhim kho cov khoom sib txuas.
5. nyob rau hauv xaus
Cov ntawv thov sib txawv ntawm HPMC hauv ntau qhov kev lag luam qhia txog nws txoj kev ua tau zoo thiab kev ua tau zoo. Nws siv hauv kev siv tshuaj, kev tsim kho, khoom noj khoom haus, tshuaj pleev ib ce thiab lwm yam kev lag luam qhia nws cov khoom sib xyaw tshwj xeeb, suav nrog kev ua yeeb yaj kiab muaj peev xwm, thickening zog thiab ruaj khov. Raws li thev naus laus zis thiab kev tshawb fawb ua ntej, HPMC zoo li yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom tshiab thiab cov qauv tsim hauv ntau qhov chaw.
Post lub sij hawm: Feb-07-2024