Hydroxyether methylcellulose (HEMC) yog ib qho khoom ntawm cov kws siv cellulos thiab siv dav hauv ntau cov ntawv thov xws li kev tsim kho, textiles, thiab tshuaj. HEMC yog dawb rau beige hmoov uas yog soluble hauv dej txias, uas ua rau nws muaj txiaj ntsig zoo li cov nplaum. Methylhydrescellencellulose (MHEC) yog lwm daim ntawv ntawm cellulose ether uas muaj kev sib pauv hauv ntau qhov kev lag luam.
Ib qho ntawm thawj cov kev siv hemc thiab MHEC yog cov nplaum ntawm kev tsim kho. Cov tebchaw no tau siv dav siv raws li cov khoom siv rau cov ntaub ntawv cement xws li pob zeb ua vaj tse thiab cug. Vim yog lawv cov dej solubility, cov tebchaw no pab khi cov nplais qhuav ua ke, ua kom muaj zog nplaum. HEMC thiab MHEC feem ntau txhim kho cov dej-tuav peev muaj peev xwm ntawm kev sib tov thiab txhim kho kom yooj yim ntawm daim ntawv thov thiab xov. Raws li cov nplaum, hemc thiab MHEC Txhim Kho Kev Ua Haujlwm, tiv thaiv sagging thiab dripping, thiab ua tiav qhov ua tiav smoother.
Lwm daim ntawv thov tseem ceeb rau HEMC thiab MHEC yog kev tsim cov xim thiab pleev xim. HEMC thiab MHEC tau siv raws li thickeners, rheology modifiers thiab stabilizers nyob rau hauv cov kuab tshuaj thiab dej txheej txheem. Lawv pab ua kom pom zoo viscosity thiab muab cov txheej txheem zoo heev xws li kev coj ua thiab kev tawm tsam kev tawm tsam. HEMC thiab MHEC kuj tau siv los ua cov nyom hauv cov nplaum nplaum hauv cov nplaum kom pab txhim kho txoj kev sib tsoo zog thiab ua kom muaj kev sib raug zoo.
HEMC thiab MHEC tseem muaj cov ntawv thov khomob. Cov tebchaw no tuaj yeem siv tau ua matrices hauv kev siv tshuaj yeeb tshuaj los tswj cov nqi ntawm kev tso yeeb tshuaj. Lawv kuj tau siv ua cov thickeners thiab stabilizers nyob rau hauv ntau yam ntawm cov khoom lag luam, xws li qhov muag quav, thiab cov tshuaj pleev qhov muag.
Ib qho ntawm qhov tseem ceeb ntawm HEMC thiab MHEC yog lawv cov biodegradabe. Cov tebchaw tawg yooj yim nyob rau hauv ib puag ncig huab cua, ua rau lawv xaiv zoo rau ib puag ncig kev ua kom ruaj khov. Ib qho ntxiv, lawv tsis muaj tshuaj lom, uas ua rau lawv muaj kev nyab xeeb rau tib neeg thiab ib puag ncig.
HEMC thiab MHEC yog cov tebchaw tseem ceeb hauv ntau cov ntawv thov kev lag luam. Lawv txhim kho cov txheej txheem, txhim kho adhesion, thiab ua kom zoo viscosity thiab txheej ua tau zoo. Lawv cov khoom tsis muaj tshuaj lom thiab biodegradable ua rau lawv xaiv muaj kev ruaj ntseg rau ntau yam kev lag luam. Raws li thev naus laus zis thiab cov txheej txheem txuas ntxiv mus ua ntej, kev siv hemc thiab mHEC nyob rau hauv ntau yam kev siv khoom, yog yuav tsuas yog txuas ntxiv ntxiv, muab cov txiaj ntsig tsis suav nrog rau ntau yam nyiaj txiag.
Lub Sijhawm Post: Feb-19-2025