Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv dav siv hauv kev tsim kho kev lag luam, tshwj xeeb tshaj yog nyob rau hauv daim ntawv nplaum nplaum. Qhov no ntau yam dej-soluble polymer muaj ntau yam khoom, ua rau nws yog ib qho nrov muaj nyob rau hauv cov nplaum, coatings thiab lwm yam tshuaj siv.
Taw qhia rau Hydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl methylcellulose (HPMC) yog non-toxic, organic, dej-soluble polymer dav siv hauv kev tsim kho kev lag luam. Nws yog ib qho derivative ntawm cellulose, ib tug natural polymer pom nyob rau hauv ntoo thiab lwm yam ntaub ntawv cog. HPMC yog tshuaj hloov kho los ntawm kev ntxiv hydroxypropyl thiab methyl pawg rau hauv cov pob txha cellulose, yog li txhim kho nws cov dej tuav, thickening thiab nplaum.
HPMC yog ntau yam polymer uas tuaj yeem hloov kho rau cov khoom tshwj xeeb. Nws muaj nyob rau hauv cov qib sib txawv, los ntawm qis mus rau siab viscosity, thiab tuaj yeem hloov kho nrog ntau qib ntawm hydroxypropyl thiab methyl hloov pauv. Qhov no tso cai rau cov tuam txhab tsim kho qhov kev ua tau zoo ntawm lawv cov khoom, ua rau lawv siv tau zoo dua, siv tau yooj yim dua thiab pheej yig dua los tsim.
Qhov zoo ntawm HPMC hauv cov nplais nplaum
HPMC tau siv dav hauv cov nplais nplaum nplaum vim nws cov txiaj ntsig ntau. Nov yog qee qhov laj thawj vim li cas HPMC yog cov polymer ntawm kev xaiv rau cov nplais nplaum:
1. Kev tuav dej
HPMC tuaj yeem nqus tau thiab khaws cov dej ntau, ua rau nws yog ib qho dej zoo hauv cov nplaum nplaum. Qhov no yog qhov tseem ceeb vim tias cov dej pab ua kom cov nplaum nplaum thiab khi rau lub substrate. Nrog HPMC, cov pobzeb nplaum tseem ua haujlwm ntev dua, uas muab sijhawm rau tus neeg siv los siv cov nplaum thiab kho cov pobzeb ua ntej nws teeb.
2. Thickening
HPMC yog cov thickener uas ua rau cov nplais nplaum nplaum ntau dua, pab txhim kho lawv cov kev sib raug zoo. HPMC thickens cov nplaum los ntawm kev ntxiab dej molecules, uas thickens cov nplaum thiab tsim kom muaj kev sib txuam ntau dua. Qhov no ua rau nws yooj yim dua rau siv cov nplaum sib npaug thiab txo qhov kev pheej hmoo ntawm daim di ncauj tawg (xws li kev tsis sib xws ntawm cov vuas).
3. Txhim kho adhesion
HPMC txhim kho qhov adhesion ntawm cov nplais nplaum vim nws cov khoom nplaum. Thaum ntxiv rau cov nplaum nplaum, HPMC tsim ib zaj duab xis nyias rau ntawm qhov chaw ntawm lub substrate uas pab khi cov nplaum rau cov pobzeb. Cov yeeb yaj kiab kuj tseem tiv thaiv cov nplaum los ntawm kev ziab sai heev, ua rau nws tsis muaj zog sib txuas.
4. Yooj yim
HPMC tuaj yeem ua rau cov nplais nplaum ua kom yooj yim dua, uas yog qhov tseem ceeb hauv thaj chaw uas txav mus los tsis tu ncua, xws li hauv cov tsev uas nyob los yog muaj av qeeg lossis tshee. HPMC pab ua kom cov nplaum nplaum ntau dua, ua rau nws yooj yim thiab txav nrog lub tsev, txo qhov kev pheej hmoo ntawm cov vuas tawg lossis poob.
5. Anti-sag khoom
HPMC pab txo qhov kev pheej hmoo ntawm phab ntsa pobzeb nplaum sagging. Vim nws cov khoom thickening, HPMC pab tiv thaiv cov nplaum los ntawm slipping los yog sagging ntawm phab ntsa ua ntej nws teev. Qhov no tuaj yeem pab cov neeg txhim kho kom ua tiav cov pobzeb zoo sib xws thiab txo qhov xav tau rau kev ua haujlwm dua.
nyob rau hauv xaus
HPMC yog ntau yam polymer uas muaj ntau yam txiaj ntsig rau kev tsim kho kev lag luam, tshwj xeeb tshaj yog hauv cov ntawv nplaum nplaum. Nws cov dej tuav, thickening, khi, yoog raws thiab tiv thaiv sag zog ua rau nws muaj kev xaiv ntawm cov kws tsim kho thoob ntiaj teb. Los ntawm kev siv HPMC los kho qhov ua tau zoo ntawm cov nplais nplaum nplaum, cov chaw tsim khoom tuaj yeem tsim cov nplaum nplaum uas yooj yim rau kev thov, muaj kev sib raug zoo dua, muaj kev tiv thaiv zoo rau kev tsiv teb tsaws thiab dej tsis kam, thiab tsis tshua muaj kev poob. Nws tsis yog qhov xav tsis thoob, yog li ntawd, HPMC yog ib qho tseem ceeb ntawm kev lag luam niaj hnub no.
Post lub sij hawm: Sep-20-2023