Hydroxypropyl methylcellulose (HPMC) yog ib qho polymer uas siv tau ntau yam hauv ntau yam lag luam vim nws cov yam ntxwv thiab kev ua haujlwm tshwj xeeb. Cov polymer semi-synthetic no yog los ntawm cellulose, ib qho polymer ntuj pom muaj nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. HPMC yog tsim los ntawm kev hloov kho cellulose los ntawm etherification ntawm propylene oxide thiab methyl chloride. Cov polymer tshwm sim muaj ntau yam khoom zoo, ua rau nws haum rau ntau yam kev siv. Qhov kev siv dav dav no tuaj yeem raug suav hais tias yog nws lub peev xwm tsim zaj duab xis, cov khoom tuab, kev ruaj khov hauv ntau qhov chaw sib txawv thiab biocompatibility.
1. Kev lag luam tshuaj
A. Kev noj haus:
Kev Tso Tawm Tswj: HPMC feem ntau siv rau kev xa tshuaj tswj kev tso tawm hauv cov tshuaj tsim. Nws tsim cov matrix ruaj khov uas tso cai rau kev tso tawm tshuaj tswj tau ntev, yog li txhim kho kev kho mob zoo thiab kev ua raws li tus neeg mob.
Cov ntawv nplaum ntsiav tshuaj: HPMC ua haujlwm ua cov ntawv nplaum ntsiav tshuaj zoo thiab pab tsim cov ntsiav tshuaj uas muaj lub zog zoo thiab cov khoom tawg.
Tus Neeg Sawv Cev Ncua: Hauv cov ntawv tshuaj kua, HPMC ua haujlwm ua tus neeg sawv cev ncua, tiv thaiv cov khoom me me los ntawm kev sib sau ua ke thiab xyuas kom meej tias cov tshuaj faib tawm sib npaug.
B. Kev siv rau qhov muag:
Viscosity Modifier: HPMC yog siv los kho qhov viscosity ntawm cov tshuaj qhov muag kom muab cov roj nplua nyeem kom zoo thiab xyuas kom lub sijhawm sib cuag ntev ntawm qhov muag.
Cov yeeb yaj kiab ua: siv los tsim cov ntaub thaiv qhov muag lossis cov ntxig rau kev tso cov tshuaj tawm hauv qhov muag tas mus li.
C. Kev npaj tshuaj pleev rau sab nraud:
Kev Tsim Gel: HPMC yog siv los npaj cov gels sab nraud uas muab cov qauv du, tsis muaj roj thiab txhim kho kev ua raws li tus neeg mob.
Cov nplaum rau daim tawv nqaij: Hauv cov txheej txheem xa tshuaj transdermal, HPMC muab cov khoom nplaum thiab tswj kev tso tawm cov tshuaj los ntawm daim tawv nqaij.
D. Cov Khoom Cog Uas Yaj Tau Hauv Av:
Cov khoom siv scaffold: HPMC yog siv los tsim cov khoom cog uas lwj tau uas tswj kev tso tawm cov tshuaj hauv lub cev, tshem tawm qhov xav tau kev phais tshem tawm.
2. Kev lag luam tsim kho
A. Cov nplaum rau pobzeb:
Cov Khoom Siv Ua Kom Tuab: HPMC yog siv los ua cov khoom siv ua kom tuab hauv cov nplaum pobzeb kom muab qhov sib xws uas xav tau rau kev siv yooj yim.
Kev Khaws Dej: Nws ua kom cov nplaum tuav dej tau zoo dua, tiv thaiv nws kom tsis txhob qhuav sai dhau thiab ua kom nws qhuav zoo.
B. Cov tshuaj cement:
Kev Ua Haujlwm Tau: HPMC ua haujlwm ua tus hloov kho rheology los tiv thaiv kev sib cais thiab txhim kho kev sib txuas, yog li txhim kho kev ua haujlwm tau ntawm cov cement-based mortars.
Kev Khaws Dej: Zoo ib yam li cov nplaum rau pobzeb, nws pab khaws cov dej noo hauv cov cementitious sib tov, ua rau kom muaj dej noo thiab txhim kho lub zog.
3. kev lag luam zaub mov
A. Cov khoom noj khoom haus ntxiv:
Cov Khoom Siv Thickeners thiab Stabilizers: HPMC yog siv los ua cov khoom siv thickener thiab stabilizer hauv ntau yam khoom noj, xws li cov kua ntses, cov khaub ncaws hnav thiab cov khoom qab zib.
Cov roj hloov: Hauv cov khoom noj uas muaj roj tsawg lossis tsis muaj roj, HPMC tuaj yeem siv los ua cov roj hloov los txhim kho cov qauv thiab qhov ncauj.
4. Kev lag luam tshuaj pleev ib ce
A. Cov khoom siv tu cev:
Kev Tswj Xyuas Viscosity: HPMC siv rau hauv cov qauv tshuaj pleev ib ce xws li tshuaj pleev thiab tshuaj pleev kom tswj tau viscosity thiab txhim kho cov qauv tag nrho.
Cov zaj duab xis tsim: Pab tsim ib zaj duab xis hauv cov khoom saib xyuas plaub hau, muab ib txheej tiv thaiv.
5. Lwm yam kev siv
A. Cov kua luam ntawv:
Cov Khoom Siv Ua Kom Tuab: HPMC yog siv los ua cov khoom siv ua kom tuab hauv cov kua luam ntawv uas siv dej los pab ua kom tau qhov sib xws thiab ruaj khov ntawm cov kua.
B. Cov khoom nplaum:
Txhim kho viscosity: Hauv cov qauv nplaum, HPMC tuaj yeem ntxiv rau kom txhim kho viscosity thiab txhim kho cov khoom sib txuas.
5. xaus lus
Cov ntawv thov sib txawv ntawm HPMC hauv ntau yam lag luam qhia txog nws qhov kev ua tau zoo thiab kev siv tau. Nws siv rau hauv kev lag luam tshuaj, kev tsim kho, khoom noj, tshuaj pleev ib ce thiab lwm yam teb qhia txog nws qhov kev sib xyaw ua ke ntawm cov khoom, suav nrog lub peev xwm tsim zaj duab xis, cov khoom tuab thiab kev ruaj khov. Raws li thev naus laus zis thiab kev tshawb fawb nce qib, HPMC yuav txuas ntxiv ua lub luag haujlwm tseem ceeb hauv kev tsim cov khoom tshiab thiab cov qauv hauv ntau yam kev lag luam.
Lub sijhawm tshaj tawm: Lub Ob Hlis-07-2024