Hydroxypropyl Methylcellulose (HPMC)yog ib qho tshuaj ntxiv siv dav hauv kev tsim kho kev lag luam, feem ntau yog ua los ntawm cellulose los ntawm kev hloov kho. Nws cov khoom tshwj xeeb ua rau nws siv dav hauv kev tsim kho, tshwj xeeb tshaj yog hauv gelling, dej tuav, thickening thiab lwm yam ntawm cov khoom siv hauv tsev.
1. Cov yam ntxwv tseem ceeb ntawm hydroxypropyl methylcellulose
Hydroxypropyl methylcellulose yog cov hmoov dawb los yog daj me ntsis tsw thiab tsw qab. Nws tuaj yeem yaj hauv dej txias thiab tsim cov pob tshab colloidal tov. Nws cov qauv hloov kho muab cov dej zoo khaws cia, thickening, film-forming thiab antifreeze zog. Hauv kev tsim kho, HPMC yog dav siv los ua cov thickener, stabilizer thiab dej-retaining agent.
2. Kev siv hydroxypropyl methylcellulose hauv kev tsim kho kev lag luam
2.1 Daim ntawv thov hauv cov khoom siv cement
HPMC feem ntau yog siv hauv cov khoom siv cement los txhim kho cov dej ntws ntawm cov cement slurry thiab txuas ntxiv lub sijhawm tsim kho. Cov ntawv thov tshwj xeeb suav nrog:
Pobzeb nplaum: Hydroxypropyl methylcellulose tuaj yeem txhim kho lub zog sib txuas ntawm pobzeb nplaum, tiv thaiv kom tsis txhob poob, thiab txhim kho nws cov dej tsis zoo. Nws tuaj yeem txhim kho kev ua haujlwm ntawm mortar hauv cov tshuaj khib nyiab qhuav thiab ua kom muaj kev sib haum xeeb.
Gypsum mortar: HPMC tuaj yeem txhim kho kev ua haujlwm thiab plastering ntawm gypsum mortar, ncua sijhawm teem sijhawm ntawm cement gypsum mortar, thiab txo qhov hollowing.
Qhuav-sib xyaw mortar: Hauv cov khoom sib xyaw qhuav, HPMC feem ntau yog siv los ua cov thickener los txhim kho cov adhesion ntawm mortar, ua kom yooj yim rau kev khiav lag luam thiab kho cov thickness thaum tsim kho, thiab zam cov sedimentation thiab stratification ntawm cov ntaub ntawv.
2.2 Daim ntawv thov hauv kev lag luam txheej
Daim ntawv thov ntawm HPMC hauv kev lag luam txheej yog feem ntau xav txog hauv cov thickening, rheology hloov thiab dej tuav ntawm txheej. Nws tuaj yeem muab kev ua haujlwm zoo los tiv thaiv sagging, yog li cov txheej txheem tuaj yeem siv sib npaug thiab tsis yooj yim ntws thaum siv. HPMC nyob rau hauv cov txheej txheem tuaj yeem txhim kho qhov kev pab cuam thiab adhesion ntawm cov txheej txheem, kom ntseeg tau tias lub sijhawm ntev ntawm cov txheej ntawm phab ntsa lossis lwm qhov chaw.
2.3 Daim ntawv thov nyob rau hauv cov ntaub ntawv waterproof
Hauv cov ntaub ntawv tsis muaj dej tsis zoo, HPMC feem ntau yog siv los txhim kho cov adhesion, kev sib txuas thiab dej tuav ntawm cov dej tsis zoo. Nws tuaj yeem txhim kho kev ua haujlwm thiab kev tsim kho kev nplij siab ntawm cov txheej txheem dej tsis zoo, thiab xyuas kom meej tias cov txheej txheej muaj lub sijhawm qhib ntev, uas yooj yim rau cov neeg ua haujlwm tsim kho kom ua tiav txhuam hniav hauv thaj chaw loj.
2.4 Daim ntawv thov hauv mortar thiab pob zeb
Nyob rau hauv ib txwm ua vaj tse thiab mortar, HPMC tuaj yeem txhim kho cov dej tuav ntawm cov cement slurry, kom tsis txhob muaj dej ntau dhau thaum lub sij hawm tsim kho, thiab xyuas kom cov dej tuav ntawm qhov chaw tsim kho thaum lub sij hawm tu txheej txheem, yog li zam kom tsis txhob muaj cov kab nrib pleb. Tsis tas li ntawd, nws tseem tuaj yeem txhim kho cov dej ntws thiab kev ua haujlwm ntawm cov pob zeb, ua kom cov pob zeb ua kom zoo dua qub, tshwj xeeb tshaj yog hauv cov pob zeb ua haujlwm siab, HPMC ua cov khoom sib xyaw tuaj yeem txhim kho kev ua haujlwm ntawm pob zeb.
2.5 Kev siv rau hauv cov ntaub ntawv rwb thaiv tsev
Daim ntawv thov ntawm HPMC nyob rau hauv cov ntaub ntawv rwb thaiv tsev yog feem ntau yog concentrated nyob rau hauv rwb thaiv tsev mortar thiab sab nrauv phab ntsa rwb thaiv tsev systems. Nws tsis tsuas yog pab txhim kho kev sib txuas ntawm lub zog thiab kev tsim kho ntawm cov khoom siv, tab sis kuj ua kom muaj qhov sib xws ntawm cov txheej txheem rwb thaiv tsev thiab tsis txhob hollowing thiab poob tawm.
3. Qhov zoo ntawm HPMC
3.1 Txhim kho kev tsim kho kev ua haujlwm
Raws li cov thickener, HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov khoom siv hauv tsev, ua cov tshuaj khib thiab pleev xim kom zoo dua thaum tsim kho thiab zam kev tsim kho teeb meem los ntawm cov viscosity ntau dhau. Tsis tas li ntawd, HPMC tuaj yeem txhim kho kev sib raug zoo ntawm cov ntaub ntawv thiab ua kom muaj kev siv ntev thiab ruaj khov.
3.2 Txuas lub sijhawm qhib
HPMC tuaj yeem txuas ntxiv lub sijhawm qhib ntawm cov cement, mortar lossis xim, muab cov neeg ua haujlwm tsim kho ntau lub sijhawm ua haujlwm, uas yog qhov tseem ceeb rau kev tsim kho loj thiab kev tsim kho ib puag ncig. Nws tuaj yeem xyuas kom meej tias cov khoom tsis tawv sai heev ua ntej ziab thiab txo cov kev tsim kho tsis raug.
3.3 Txhim kho dej tsis kam thiab huab cua tsis kam
HPMC tuaj yeem ua kom cov dej khaws cia hauv cov khoom siv hauv tsev, xyuas kom meej tias cov dej noo yuav tsis poob sai heev thaum lub sij hawm tsim kho, thiab tiv thaiv cov kab nrib pleb los ntawm kev sib sau vim tias ya raws sai sai. Tsis tas li ntawd, nws tseem tuaj yeem txhim kho cov Frost tsis kam ntawm cov khoom siv hauv tsev thiab txhim kho lawv cov huab cua tiv thaiv, uas yog qhov tseem ceeb tshwj xeeb hauv cov huab cua txias.
3.4 Kev tiv thaiv ib puag ncig
Raws li cov khoom siv polymer ntuj, daim ntawv thov ntawm HPMC yuav tsis ua rau muaj kuab paug rau ib puag ncig. Nws yog biodegradable, yog li nws ua tau raws li qhov xav tau tam sim no rau kev tiv thaiv ib puag ncig thiab kev tsim kho kom ruaj khov thaum siv.
4. Kev txhim kho yav tom ntej ntawm HPMC hauv kev tsim kho
Raws li kev tsim kho kev lag luam qhov kev thov rau cov ntaub ntawv ua tau zoo tseem nce ntxiv, HPMC yuav siv dav hauv kev tsim kho. Nyob rau hauv lub neej yav tom ntej, nrog kev txhim kho txuas ntxiv ntawm HPMC cov cuab yeej tsim khoom thiab kev txhim kho txuas ntxiv ntawm kev tsim kho thev naus laus zis, HPMC tuaj yeem siv ntau cov khoom siv hauv tsev tshiab, xws li cov pob zeb ua haujlwm siab, cov khoom siv ntsuab ntsuab, thiab cov khoom siv hauv tsev ntse. Nyob rau tib lub sijhawm, nrog rau kev txhim kho ntawm kev tiv thaiv ib puag ncig, HPMC yuav ua si nws qhov zoo ib puag ncig thiab ruaj khov thiab dhau los ua cov khoom tseem ceeb hauv kev tsim kho kev lag luam.
Raws li ib tug functional additive,Hydroxypropyl methylcellulose yog tsim los ntawm cov tshuajmuaj ntau yam tseem ceeb siv hauv kev tsim kho. Nws cov dej tuav tau zoo heev, thickening thiab zaj duab xis-tsim cov khoom ua rau nws siv dav hauv cov khoom siv cement, coatings, cov ntaub ntawv tsis muaj dej, mortars thiab lwm yam. Nrog rau kev txhim kho ntawm kev tsim kho kev lag luam cov kev cai rau kev ua haujlwm ntawm cov khoom siv, daim ntawv thov kev cia siab ntawm HPMC yuav dav dua, thiab nws qhov tseem ceeb hauv kev tsim kho kev lag luam yav tom ntej tsis tuaj yeem kwv yees.
Post lub sij hawm: Feb-24-2025