Hydroxypropylmethylcellulose (HPMC) yog ib qho polymer ua los ntawm kev hloov cov cellulose ntuj.Nws muaj ntau yam kev lag luam hauv kev siv tshuaj, khoom noj, tshuaj pleev ib ce, thiab kev tsim kho.HPMC yog ib qho nonionic cellulose ether uas yog yooj yim soluble nyob rau hauv dej thiab muaj peev xwm tsim ib tug pob tshab, viscous tov uas tseem ruaj khov nyob rau hauv ib tug dav pH ntau yam.
Cov yam ntxwv ntawm HPMC suav nrog:
1. Lub peev xwm khaws dej siab: HPMC tuaj yeem nqus dej thiab tuav nws hauv qhov chaw, ua rau nws muaj txiaj ntsig zoo li cov thickener, emulsifier, thiab stabilizer hauv ntau daim ntawv thov.
2. Cov khoom siv ua yeeb yaj kiab zoo: HPMC tuaj yeem tsim cov yeeb yaj kiab pob tshab nrog lub zog zoo txhua yam.Qhov no tso cai rau nws siv rau hauv kev tsim cov tshuaj ntsiav, txheej thiab lwm yam khoom.
3. Kev ua haujlwm siab saum npoo: HPMC muaj cov khoom ua haujlwm saum npoo av, tso cai rau nws siv los ua tus neeg sawv cev ntub dej thiab dispersant.
4. Zoo thermal stability: HPMC ruaj khov ntawm qhov kub thiab txias thiab tuaj yeem siv rau hauv cov ntawv thov uas xav tau qhov kev ua haujlwm no.
5. Zoo adhesion rau ntau qhov chaw: HPMC tuaj yeem khi rau ntau qhov chaw, ua rau nws muaj txiaj ntsig zoo hauv kev tsim cov nplaum thiab cov coatings.
Kev siv HPMC hauv ntau qhov kev lag luam:
1. Tshuaj: HPMC yog dav siv nyob rau hauv kev npaj tshuaj raws li ib tug binder, disintegrant, thiab viscosity regulator.Nws muaj nyob rau hauv cov ntsiav tshuaj, capsules thiab kua formulations.
2. Khoom noj khoom haus: HPMC yog siv los ua cov thickener, stabilizer thiab emulsifier hauv cov zaub mov.Nws tuaj yeem siv rau hauv cov khoom xws li ice cream, yogurt thiab zaub xam lav hnav khaub ncaws.
3. Tshuaj pleev ib ce: HPMC yog dav siv nyob rau hauv cov tshuaj pleev ib ce ua ib tug thickener, emulsifier, thiab film-forming agent.Nws tuaj yeem siv rau hauv cov khoom xws li cream, tshuaj pleev thiab tshuaj zawv plaub hau.
4. Kev tsim kho: HPMC yog cov khoom tseem ceeb hauv ntau cov ntaub ntawv tsim kho xws li cov nplais nplaum, cov cement-based plasters thiab mortars.Nws ua raws li cov dej tuav cov neeg sawv cev, txhim kho kev ua haujlwm, thiab muab kev ua kom zoo dua qub thiab tswj kev shrinkage.
HPMC kev lag luam siv piv piv:
1. Kev tuav dej: Cov dej tuav tus nqi ntawm HPMC yog qhov tseem ceeb uas txiav txim siab nws cov txiaj ntsig zoo li cov thickener thiab nplaum.Cov cuab yeej muaj kev lag luam siv tus nqi ntawm 80-100%.
2. Viscosity: Viscosity yog qhov tseem ceeb ntawm kev xaiv HPMC rau ntau yam kev siv.Kev lag luam siv piv rau viscosity ntau ntawm 5,000 txog 150,000 mPa.s.
3. Methoxyl pawg ntsiab lus: Cov ntsiab lus methoxyl pawg ntawm HPMC cuam tshuam rau nws cov solubility, viscosity thiab bioavailability.Kev lag luam siv piv rau cov ntsiab lus methoxy yog nruab nrab ntawm 19% thiab 30%.
4. Hydroxypropyl cov ntsiab lus: Cov ntsiab lus hydroxypropyl cuam tshuam rau kev solubility thiab viscosity ntawm HPMC.Kev lag luam siv piv rau cov ntsiab lus hydroxypropyl yog nruab nrab ntawm 4% thiab 12%.
HPMC yog ntau yam polymer nrog ntau daim ntawv thov kev lag luam.Nws cov khoom tshwj xeeb ua rau nws haum rau kev siv tshuaj, khoom noj, tshuaj pleev ib ce thiab kev tsim kho.Kev lag luam siv piv rau ntau yam tsis sib xws pab xaiv cov qib tsim nyog ntawm HPMC rau ib daim ntawv thov tshwj xeeb.
Post lub sij hawm: Sep-14-2023