HydroxyPropyyl methylcellulose (HPMC)yog cov khoom siv polymer tau siv hauv kev tsim kho kev tsim kho. Nws muaj ntau yam tshuaj thiab cov khoom siv lub cev, uas ua rau nws ua lub luag haujlwm tseem ceeb hauv cov khoom tsim.
1. Daim ntawv thov ntawm HPMC hauv kev tsim kho kev tsim kho
Txheej Txheem Architectural thiab Adhesives Kimacell®hpmc yog cov tuab thiab zaj duab xis yav dhau los siv hauv cov cuab yeej archings thiab cov nplaum. Nws tuaj yeem txhim kho cov rhheology ntawm txheej, ua rau txheej ntau niaj hnub ua haujlwm thaum txhim kho, thiab tiv thaiv cov txheej los ntawm stratification lossis daus lossis daus. Nyob rau tib lub sijhawm, HPMC tseem tuaj yeem txhim kho cov nplaum ntawm txheej, txhim kho cov dej tsis kam, uas yog tshwj xeeb rau cov khoom lag luam sab nraum zoov.
Hauv cov nplaum, HPMC tuaj yeem txhim kho txoj kev sib raug zoo thiab kev tsim kho cov khoom nplaum, tshwj xeeb tshaj yog cov ntaub ntawv tsim ua xws li pobzeb cov nplaum thiab gypsum. Nws cov dej solubility pub zoo dua tswj ntawm kev siv sijhawm thiab kev ua haujlwm ntawm cov nplaum thaum kev tsim kho, txo cov khoom siv pov tseg.
Cib xhp hauv cov cug qhuav (xws li cov nplaum nplaum, sab nrauv phab ntsa cia, thiab lwm yam), HPMC yog siv los ua cov tuab thiab dej rov qab. Nws tuaj yeem txhim kho lub zog ua haujlwm ntawm cug, ua kom muaj kuab thiab ductility thaum lub sijhawm ua ntawv thov, tswj kom muaj teeb meem kev tsim txom ntev dua los ntawm kev ziab huv sai. Tsis tas li ntawd, HPMC tuaj yeem txhim kho qhov tawg tsis kam thiab impermabeability ntawm cultap thiab txuas nws lub neej kev pabcuam.
Qhob additives daim ntawv thov ntawm HPMC hauv cov pob zeb ua yog los ntawm kev txhim kho nws cov kua dej thiab tsev ua ke. Vim tias HPMC muaj cov dej ua dej zoo heev thiab cov khoom sib txawv, nws tuaj yeem tsim cov kev sib cais ua ke hauv kev ua haujlwm, txhim kho lub zog ua haujlwm thiab lub zog ntawm cov qhob. Nyob rau tib lub sijhawm, HPMC tseem tuaj yeem txhim kho cov dej tuav ntawm cov pob zeb ua, txo cov pob zeb evaporation thiab pab ua pob zeb ua kom zoo dua qub lub zog.
Cov ntaub ntawv tso dej hauv cov ntaub ntawv tsis muaj dej, lub luag haujlwm ntawm HPMC feem ntau yog cov tuab thiab zaj duab xis yav tas los. Nws tuaj yeem txhim kho txoj kev sib txuas lus thiab kev ua kom zoo ntawm cov khoom siv dej, ua kom muaj ntau dua thiab tsis muaj kev cuam tshuam los ntawm qhov kub thiab txias, thiab kev ntxhov siab ib puag ncig.
2. HPMC txhim kho kev ua tau zoo ntawm kev tsim kho kev tsim kho
Txhim kho cov rheology ntawm lub tsev cov ntaub ntawv kimacell®, muaj peev xwm txhim kho cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog thaum yuav tsum muaj cov nplaim hluav taws kub. Cov tshuaj khib, txheej thiab cov nplaum thiab cov khoom siv HPMC tuaj yeem tswj tau cov tshuaj zoo ntawm kev tsim kho, ua kev tsim kho thiab yooj yim dua los kho thiab ua haujlwm.
Kev Txhim Kho Cov Dej Ua Haujlwm thiab Kev qhib lub sijhawm qhib hauv ntau lub tsev cov ntaub ntawv, kev sib ntxiv ntawm HPMC tuaj yeem txhim kho cov dej khaws cia. Qhov no yog qhov tshwj xeeb tshaj yog rau cug tshuaj khib, pob zeb ua kom zoo, cov ntaub ntawv yuav tsum muaj cov dej num kom tsim nyog kom ua ke nrog cov substrate lossis ua tiav tshuaj lom neeg. Yog li, HPMC tau txais txiaj ntsig zoo rau lub sijhawm qhib kev tsim kho thiab zam kev tsim txom lossis tsis txhob ua haujlwm nyuaj los ntawm kev ziab khaub ncaws dhau dhau.
Txhim kho kev sib raug zoo thiab tawg ua hauj lwm HPMC tsis tuaj yeem txhim kho kom muaj fighterity thiab kev tsim kho cov ntaub ntawv, tab sis kuj txhim kho cov ntaub ntawv ua tau zoo. Piv txwv li, ntxiv HPMC rau cov nplais nplaum thiab gypsum tuaj yeem nce lawv theem lub zog nrog lub hauv paus txheej, kom cov ntaub ntawv tsis poob lossis tawg thaum siv sijhawm ntev. Nyob rau tib lub sijhawm, cov qauv molecular ntawm HPMC pab txhawm rau txhawm rau txhim kho qhov tawg tawm ntawm cug thiab pob zeb ua kom ruaj khov.
Txhim kho cov khoom tiv thaiv ib puag ncig thiab kev ruaj khov ntawm HPMC los ntawm cov nroj tsuag ntuj ntoo (xws li ntoo lossis paj rwb), nws yog cov peev txheej tshiab. Kev siv HPMC pab kom txo qis ntawm cov roj av-raws li cov tshuaj, yog li txo cov pa roj carbon ntawm kev tsim kho kev tsim kho. Ib qho ntxiv, Kimacell® tau txhim kho kev ua haujlwm tau zoo thiab txo cov khoom siv pov tseg rau kev ua tiav cov hom phiaj txhim kho ntawm kev tsim kho kev tsim kho.
3. Kev cuam tshuam ntawm HPMC nyob rau ib puag ncig raws li dej-soluble polymer los ntawm cov khoom ntuj, HPMC tau pom tseeb ib puag ncig nrog qee cov ntaub ntawv hauv tsev. Ua ntej, cov txheej txheem synthesis feem ntau tsis suav nrog cov tshuaj lom neeg, thiab cov muaj kuab paug los ntawm ib puag ncig yog me me. Thib ob, raws li cov khoom siv tsis zoo, HPMC kuj muaj kev nyab xeeb rau kev pov tseg thiab yuav tsis ua rau muaj kuab paug rau av lossis dej.
HPMCYog siv dav hauv kev tsim kho kev tsim kho, muaj feem xyuam, cov nplaum, neeg nplua nuj, pob zeb ua thiab lwm hom teb. Nws tsis tuaj yeem tsuas txhim kho cov ntaub ntawv hauv tsev, xws li txhim kho cov lus rheology, ntxiv txhawb nqa kev tsim kho kev tsim kho kom tsim kho hauv kev ua phooj ywg ntau dua. Nrog rau qhov kev thov nce qib siab, ntsuab thiab ib puag ncig cov ntaub ntawv hauv HPMC tseem dav, thiab txoj kev tshiab ntawm kev siv yuav tshwm sim yav tom ntej.
Lub Sijhawm Post: Jan-27-2025