Hydroxypropylmethylcellulose (HPMC) yog ntau yam polymer nrog ntau yam kev siv hauv ntau yam lag luam.Ib qho ntawm cov kev lag luam uas HPMC ua lub luag haujlwm tseem ceeb yog kev lag luam xim thiab txheej txheej.Vim nws cov khoom tshwj xeeb, HPMC yog siv rau hauv cov xim thiab cov txheej txheem ua cov khoom tseem ceeb hauv kev tsim cov khoom no.
HPMC yog cov dej-soluble polymer muab los ntawm cellulose ethers.Nws muaj ntau yam khoom xws li siab thickening, cohesiveness, adhesion, tsis tshua muaj tshauv ntsiab lus, zaj duab xis tsim, thiab dej tuav.Cov khoom no ua rau HPMC yog cov khoom siv zoo tshaj plaws hauv kev tsim cov xim thiab cov khoom siv txheej.
Daim ntawv thov ntawm HPMC hauv kev lag luam xim thiab coatings coj ntau yam txiaj ntsig rau cov tuam txhab, cov neeg xa khoom thiab cov neeg siv kawg.Qee qhov txiaj ntsig no tau tham hauv qab no:
1. Thickener
Ib qho txiaj ntsig tseem ceeb ntawm kev siv HPMC hauv cov xim thiab txheej txheej yog nws daim ntawv thov ua cov thickener.HPMC muaj cov khoom thickening zoo heev thiab feem ntau yog siv los ua kom cov viscosity ntawm txheej txheej.Cov cuab yeej no yog qhov tseem ceeb rau kev tsim cov coatings nrog ib tus du, zoo ib yam thiab yooj yim rau kev thov nto.
Lub thickness ntawm cov xim yog ib qho tseem ceeb tshwj xeeb tshaj yog rau cov xim thiab cov txheej txheem uas yog siv nrog txhuam los yog cov menyuam.HPMC-based formulations muab cov txiaj ntsig ntawm kev tiv thaiv cov xim drips, khiav thiab splashes.Yog li ntawd, HPMC tuaj yeem pab cov tuam txhab tsim cov txheej txheem thiab cov xim uas yooj yim siv thiab ua haujlwm, ua rau lawv nyiam cov neeg siv.
2. Kev tuav dej
HPMC yog ib qho hydrophilic polymer nrog lub zog tuav dej.Nws muaj cov khoom tuav dej zoo heev, uas yog qhov zoo tshaj plaws hauv kev tsim cov xim thiab coatings.Kev tuav dej ua kom cov yeeb yaj kiab tsis sib xws thiab muab cov xim zoo dua.Nws kuj tseem pab kom ntev lub neej txee ntawm cov xim.
Tsis tas li ntawd, kev tuav dej yog ib qho tseem ceeb tshaj plaws rau txheej txheej zoo thiab kev ua haujlwm.Xim yuav tsum nyob twj ywm ua haujlwm tau ntev thiab HPMC ua kom cov xim tsis qhuav sai sai.
3. Bonding thiab Adhesion
HPMC muaj kev sib raug zoo thiab kev sib txuas lus zoo, ua rau nws muaj qhov tseem ceeb hauv cov xim thiab cov txheej txheem.Lub polysaccharide moiety nyob rau hauv HPMC yog lub luag hauj lwm rau qhov zoo binding thiab adhesion zog ntawm lub polymer.
Cov khoom nplaum ntawm HPMC pab tuav cov pigments thiab fillers ua ke, ua rau cov xim tsis sib xws thoob plaws hauv cov xim xim.HPMC xyuas kom zoo dispersion ntawm pigments thiab fillers nyob rau hauv cov xim, uas ua rau ib tug du, muaj zog tiav.
Ntawm qhov tod tes, qhov adhesion ntawm HPMC yog qhov tsim nyog rau qhov adhesion ntawm cov xim zaj duab xis mus rau lub substrate, ua rau cov xim zoo dua thiab siv tau ntev.
4. Zaj duab xis tsim muaj peev xwm
HPMC ua raws li zaj duab xis qub thaum tsim cov xim thiab txheej.Nws pab tsim cov yeeb yaj kiab txuas ntxiv uas tiv thaiv qhov chaw ntawm ib puag ncig xws li hnub ci, dej thiab av noo.Qhov tsim ntawm zaj duab xis no tiv thaiv lub substrate los ntawm kev puas tsuaj, corrosion thiab lwm yam kev puas tsuaj.
Tsis tas li ntawd, HPMC-raws li cov xim zaj duab xis muaj tshuaj ruaj khov thiab nthuav tawm cov xim zoo nkauj thiab ua haujlwm ntev, ua rau lawv cov khoom zoo tagnrho rau cov xim tsev.
Kev siv hydroxypropyl methylcellulose hauv cov xim thiab txheej txheej muaj ntau yam txiaj ntsig rau cov tuam txhab, cov neeg xa khoom thiab cov neeg siv kawg.HPMC-raws li cov xim thiab txheej yog nrov nrog cov neeg siv khoom rau lawv cov thickening zoo heev, tuav dej, sib txuas, adhesion thiab zaj duab xis-tsim cov khoom.Nws txhim kho cov khoom zoo thiab kev ua haujlwm ntawm cov xim thiab txheej txheej, muab cov txiaj ntsig zoo dua rau cov neeg siv khoom.Nyob rau yav tom ntej, kev suav nrog HPMC hauv kev tsim cov xim thiab cov coatings tau pom zoo.
Post lub sij hawm: Aug-16-2023