Hydroxypropylmethylcellulose (HPMC) yog ib qho kev sib xyaw ua ke uas feem ntau siv hauv kev tsim kho kev lag luam, suav nrog kev tsim ua vaj tse. Txawm hais tias nws yuav tsis ncaj qha txhim kho lub durability ntawm pob zeb, nws ua lub luag haujlwm tseem ceeb hauv kev txhim kho ntau yam khoom ntawm cov pob zeb sib xyaw.
1. Taw qhia rau hydroxypropyl methylcellulose:
Hydroxypropyl methylcellulose (HPMC) yog hloov kho cellulose ether muab los ntawm ntuj polymers. Vim nws cov khoom tshwj xeeb, nws tau dav siv los ua cov khoom siv hauv tsev. Hauv kev ua vaj tse, HPMC feem ntau yog siv los ua tus neeg saib xyuas dej, thickener, thiab binder. Nws cov qauv tshuaj ua rau nws tsim cov yeeb yaj kiab tiv thaiv ib puag ncig cov cement hais, cuam tshuam rau rheological thiab mechanical zog ntawm cov pob zeb sib tov.
2.Lub luag haujlwm ntawm HPMC hauv kev ua haujlwm ruaj khov:
Kev tuav dej thiab kev ua haujlwm:
HPMC ua raws li tus neeg saib xyuas dej, tiv thaiv dej ntau dhau thaum lub sijhawm pib ntawm kev kho pob zeb.
Qhov kev txhim kho dej khaws cia no pab tswj kev ua haujlwm kom zoo, ua rau kev tso chaw zoo dua thiab kev cog lus ntawm pob zeb.
Txhim kho adhesion:
Cov cuab yeej ua yeeb yaj kiab ntawm HPMC pab txhim kho adhesion ntawm cov cement hais, ua rau muaj kev sib koom ua ke ntau dua thiab ruaj khov matrix.
Txo kev sib cais thiab los ntshav:
HPMC pab txo qhov kev pheej hmoo ntawm kev sib cais thiab los ntshav hauv cov khoom sib xyaw ua ke, ua rau muaj kev sib txuam ntau dua, cov khoom tsim suab kawg.
Txhim kho lub sijhawm teem sijhawm:
Kev siv HPMC tuaj yeem cuam tshuam lub sijhawm teeb tsa ntawm pob zeb, yog li muab qhov sib npaug ntawm kev ua haujlwm thiab kev txhim kho lub zog nrawm.
Qhov cuam tshuam rau mechanical zog:
Thaum HPMC nws tus kheej yuav tsis ncaj qha txhim khu kev ruaj khov ntawm cov pob zeb, nws cov txiaj ntsig ntawm kev ua haujlwm thiab adhesion tuaj yeem cuam tshuam ncaj qha rau cov khoom siv ntawm cov pob zeb, pab tsim kom muaj zog thiab ruaj khov.
3. Cov lus ceeb toom thiab cov kev coj ua zoo tshaj plaws:
Dosage tswj:
Kev noj tshuaj HPMC yog qhov tseem ceeb. Kev noj tshuaj ntau dhau tuaj yeem ua rau muaj kev cuam tshuam tsis zoo, thaum kev noj tshuaj ntau dhau yuav tsis muab kev txhim kho xav tau.
kev sib raug zoo:
Kev sib xyaw nrog lwm cov khoom sib xyaw ua ke thiab cov khoom siv yuav tsum raug txiav txim siab kom tsis txhob muaj kev cuam tshuam tsis zoo uas yuav ua rau cov khoom sib xyaw ua ke.
Txoj kev kho:
Txawm hais tias HPMC pab khaws cov dej, cov txheej txheem kho kom zoo yuav tsum tau siv los ua kom lub sijhawm ntev ntawm cov pob zeb.
Txawm hais tias HPMC tsis yog tus neeg sawv cev ncaj qha uas txhim kho qhov ua tau zoo ntawm cov pob zeb, nws siv hauv cov pob zeb sib tov tuaj yeem txhim kho kev ua haujlwm, adhesion, thiab lwm yam khoom, yog li kev txhim kho tag nrho cov kav ntev ntawm cov pob zeb. HPMC yuav tsum raug suav hais tias yog ib feem ntawm kev sib koom ua ke rau kev sib xyaw ua ke tsim thiab kev tsim kho kom ua tiav cov qauv ruaj khov thiab muaj zog.
Post lub sij hawm: Jan-19-2024