HydroxyPropyyl methylcellulose (HPMC)yog dej-soluble polymer muab tau los ntawm cellulose, ib qho kev lom neeg lom neeg.Txhawj xeeb ®HPMC tau siv dav hauv kev tsim kho kev tsim kho, tshwj xeeb hauv kev khib thiab plaster cov qauv. Nws lub luag haujlwm tseem ceeb hauv cov ntawv thov no yog txhawm rau txhim kho cov dej sib tov ntawm kev ua tau zoo thaum ua tiav cov txheej txheem sib xyaw thiab kev ua tiav.
Lub luag haujlwm ntawm dej rov qab nyob rau hauv cug
Dej khaws cia hauv kev khib nyiab rau kev sib xyaw kom muaj kev sib xyaw kom muaj dej tom qab nws tau thov kom ua haujlwm tau thiab hydrated thaum lub sij hawm lub chaw teeb tsa thiab kev kho tus txheej txheem. Cov dej kom zoo kom ua kom cov tshuaj khib tau ua kom muaj kev sib khib nrog lub substrate thiab tiv thaiv cov teeb meem xws li kev tawg, los yog cov khoom nplaum tsis zoo. Kev khaws cov dej tsis txaus yuav ua rau kev kho tsis zoo, ua rau cug zog tsis muaj zog, muaj zog txo tau lub zog, lossis ua kom ua tau ntxov.
Dej ceev ceev yog qhov tseem ceeb rau kev sib xyaw kom qhuav-mortars, uas yog pre-ntim ua ntej tov, xuab zeb, thiab ntxiv. Thaum sib xyaw nrog cov dej ntawm txoj haujlwm, cov neeg muaj cai yuav tsum khaws cov dej noo txaus kom ntseeg tau tias muaj kev npau suav txaus, yog li ua tiav lub zog thiab kav ntev. Hauv cov ntsiab lus no, HPMC plays Lub luag haujlwm tseem ceeb hauv kev tswj kav dej tuav thiab txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm lub tshuaj khib.
Yuav ua li cas HPMC Txhim Kho Cug Kev Khaws Tseg
Dej-Solubility thiab Gel Tsim: HPMC yog dej-soluble polymer uas ua rau cov qauv gel zoo li cov qauv sib xyaw nrog dej. Qhov qauv gel no muaj peev xwm encapsulate dej lwg me thiab txo cov evaporation, yog li nce ntawm cug cug lub peev xwm rov ua kom muaj peev xwm. Tus gel tiv thaiv lub cug ntawm ziab tawm sai sai, tswj txoj cai ntawm noo noo thaum lub sijhawm kho.
Paub txog tswj hwm: Lub viscosity ntawm cug sib tov yog pawg yog pawg los ntawm muaj hpmc, uas pab nyob rau hauv stabilizing sib xyaw. Los ntawm kev nce viscosity, HPMC kom cov dej yog cov neeg muaj plaub cuam tshuam thoob plaws cov sib tov thiab pab kom tiv thaiv kab mob dej thiab cov khoom sib cais. Qhov kev tswj hwm tus kab mob viscosity no tsis tsuas yog txhim kho cov tshuaj khib nyiab khaws cia tab sis kuj ua tau nws cov haujlwm ua haujlwm, ua rau nws rov ua haujlwm thiab kis tau yooj yim.
Kev tiv thaiv ntawm kev ua kom ua ntxov ntxov: Thaum lub sijhawm thov cug cug, kev ua kom ntxov ntxov tuaj yeem tshwm sim vim yog dej sai sai. HPMC pab kom ua kom qeeb cov txheej txheem no los ntawm kev ua yeeb yam raws li tus neeg sawv cev dej. Qhov no ua kom pom tseeb tias lub tshuaj khib nyob twj ywm rau lub sijhawm ntev dua, tso cai rau kev ua kom zoo dua rau cov chaw thiab tiv thaiv kab nrib pleb uas yuav tsim vim tsis muaj dej num tsis zoo.
Txhim Kho Adhesion: Raws li HPMC txhim kho cov dej ua kom muaj zog, nws ua kom muaj kev ua kom zoo ib yam ntawm cov dej khov kho kom cov dej thiab kev sib txuas nrog cov aggregates. Qhov kev txhim kho hydration hydration ua rau muaj zog ntawm cov kab tshuaj khib thiab txheej, txhim kho adhesion thiab tag nrho kev ua tau zoo. Nws yog tau txais txiaj ntsig tshwj xeeb thaum ua haujlwm nrog cov ntaub ntawv ntxig, xws li cib lossis pob zeb ua kom zoo li nqus noo noo.
Cov txiaj ntsig ntawm HPMC hauv tshuaj khib
| Kev pab | Kev piav txog |
| Txhim Kho Cov Dej Ua Haujlwm | HPMC cov ntaub ntawv ib gel uas pab tuav dej hauv cov tshuaj khib, tiv thaiv kom qhuav kom qhuav thiab ua kom muaj kev ua kom muaj dej ntau dua. |
| Txhim Kho Kev Ua Haujlwm | Qhov nce hauv viscosity txhim kho cov kev sib xyaw ntawm cov sib tov, ua rau nws yooj yim dua los thov, thiab cov duab. |
| Txo shrinkage thiab tawg | Los ntawm kev tiv thaiv ntawm cov dej evaporation, HPMC pab txo qhov tshwm sim ntawm cov kab nrib pleb uas tuaj yeem tsim kho vim yog qhov chaw shrinkage. |
| Kev tiv thaiv kev sib cais | HPMC pab kom ruaj khov rau kev sib xyaw los ntawm kev ua kom muaj kev sib cais ntawm cov dej thiab cov kab ke, tiv thaiv kev sib cais. |
| Txhim Kho Cov Khoom Zoo thiab Tsevneeg | Cov dej noo kev tuav khaws cia los ntawm HPMC txhawb nqa zoo dua kev sib cais ntawm lub tshuaj khib thiab txheej, txhim kho durability thiab lub zog. |
| Nce qhib lub sijhawm | Tshuaj khib uas muaj hpmc tseem ua haujlwm rau lub sijhawm ntev dua, tso cai rau kev hloov kho thiab kho kom zoo thaum thov. |
| Txhim kho kev ua tau zoo hauv cov huab cua qhuav | Hauv cov cheeb tsam uas muaj lub peev xwm loj ntawm evaporation, HPMC lub peev xwm los khaws cov dej kom tau tias lub tshuaj khib tseem ua haujlwm thiab tsis qhuav ua haujlwm. |
Cov ntawv thov ntawm HPMC hauv tshuaj khib
HPMC feem ntau siv hauv ntau hom kev nplua nuj, suav nrog:
Cov nplaum nplaum: Hauv lub rooj zaum muaj pob zeb, HPMC txhim kho cov dej ua kom dej, ua kom muaj kev haus dej kom huv ntawm cov cegent thiab txhim kho cov nplais thiab cov substrate.
Lub txaj liab-txaj: Lub txaj tsis muaj tshoob, feem ntau yog siv rau cov nplais nruab nrog HPMC raws li nws pab tswj kom muaj txoj cai noo noo sib npaug rau kev ua kom zoo nkauj thiab teeb tsa.
Kho cov neeg yuav khoom Mortars: Rau kev kho cov kab nrib pleb thiab cov chaw hpmc txhim kho kev kho cov dej tsis zoo, tso cai rau kev sib raug zoo thiab tiv thaiv kom qhuav kom qhuav.
Plaster thiab Stucco: Hauv cov ntawv thov plastering, HPMC ua kom cov tshuaj khib nyiab khaws cia cov dej kom txaus rau cov khoom siv du thiab kho kom zoo, tshwj xeeb yog nyob rau hauv cov mob kub lossis qhuav.
Qhuav-sib xyaw Mortars: Pre-mixed cug khoom lag luam, suav nrog cov uas rau kev tsim kho bricklaying, uas txhim kho ob qho khoom siv thiab kev ua tau zoo ntawm cov khoom lag luam ib zaug nws yog rehdrated.
Qhov cuam tshuam rau kev ua tau zoo ntawm HPMC hauv tshuaj khib
Thaum HPMC muaj txiaj ntsig zoo, nws cov txiaj ntsig zoo nyob rau hauv kev txhim kho cov dej rov qab yuav cuam tshuam los ntawm ntau yam:
Concentration ntawm HPMC: Tus nqi ntawmTxhawj xeeb ®HPMC siv nyob rau hauv lub cug sib xyaw ncaj qha rau nws cov khoom siv dej kom ceev. HPMC dhau los tsis tau muaj dej khaws cia txaus, thaum ntau ntau yuav cuam tshuam rau coll coll viscosity thiab kev ua haujlwm.
Hom thiab qib ntawm HPMC: Ntau hom thiab qib kawm HPMC nyob ib puag ncig, txhua tus nrog cov qib sib txawv ntawm viscity, solubility, thiab tsim kev muaj peev xwm. Kev xaiv hom HPMC uas tsim nyog ntawm HPMC rau ib daim ntawv thov tshwj xeeb yog qhov tseem ceeb rau kev ua tiav cov dej rov qab los thiab tshuaj pov tseg.
Ib puag ncig ib puag ncig: Cug sib tov nrog HPMC yuav coj txawv txawv hauv ntau yam kev mob ib puag ncig. Kev kub siab lossis cov av noo qis tuaj yeem nce cov nqi evaporation, muaj feem cuam tshuam txog HPMC hauv dej khaws cia. Nyob rau hauv cov xwm txheej zoo li no, kev ntsuas ntxiv yuav yog qhov tsim nyog los xyuas kom muaj dej kom zoo.
Sib xyaw nrog lwm cov kev sib ntxiv: Cug sib tov feem ntau muaj ntau yam ntxiv, nrog rau cov hnab yas, retarders, lossis cov nrawm dua. Qhov kev sib cuam tshuam ntawm HPMC thiab lwm yam khoom xyaw yuav tsum tau pom tias lawv ua haujlwm synergistically los txhim kho lub cug tshuaj ua haujlwm.
HPMCyog qhov tseem ceeb ntxiv hauv kab ntawv cort ua qauv, feem ntau vim nws muaj peev xwm txhim kho cov dej khaws cia. Los ntawm kev sib sau cov qauv gel uas encapsulates dej lwg me, HPMC pab tiv thaiv kev ziab thaum ua kom tiav, thiab ua kom muaj kev sib xyaw ua ke ntawm cov khoom noj kom xisas. Cov khoom no pab txhawb kom txhim kho adhesion, txo cov shrinkage, thiab ua kom muaj zog ruaj khov ntawm lub cug. Kev siv Txhawj xeeb ®HPMC yog qhov tseem ceeb tshaj plaws nyob rau hauv ib puag ncig nrog cov nqi evaporation siab lossis rau cov ntawv thov yuav tsum tau qhib lub sijhawm qhib txuas ntxiv. Nkag siab txog cov xwm txheej uas cuam tshuam ntawm HPMC thiab xaiv qhov tseeb kev tshaj thiab ntaus rau txhua daim ntawv thov yog qhov tseem ceeb rau kev tshuaj khib.
Lub Sijhawm Post: Feb-21-2025