Hydroxypropyl Methylcellulose (HPMC)yog ib tug dej-soluble polymer muab tau los ntawm cellulose, ib tug natural biopolymer.AnxinCel®HPMC yog dav siv nyob rau hauv kev tsim kho kev lag luam, tshwj xeeb tshaj yog nyob rau hauv mortar thiab plaster formulations. Nws lub luag haujlwm tseem ceeb hauv cov ntawv thov no yog txhawm rau txhim kho cov dej tuav cov khoom ntawm mortar, uas yog qhov tseem ceeb rau kev ua tiav qhov kev ua tau zoo thaum lub sij hawm sib xyaw thiab kev siv cov txheej txheem.
Lub luag hauj lwm ntawm Dej Retention hauv Mortar
Kev tuav dej hauv mortar yog hais txog lub peev xwm ntawm cov khoom sib xyaw kom khaws cov dej tom qab siv rau saum npoo, tso cai rau nws nyob twj ywm ua haujlwm thiab hydrated thaum lub sijhawm teeb tsa thiab kho. Kev tuav dej kom zoo ua kom cov mortar tuaj yeem tsim kev sib raug zoo nrog cov substrate thiab tiv thaiv cov teeb meem xws li tawg, shrinkage, los yog adhesion tsis zoo. Kev tuav dej tsis txaus tuaj yeem ua rau kev kho tsis sib xws, ua rau cov pob qij txha tsis muaj zog, txo qis zog, los yog ua kom tawv nqaij ntxov.
Kev tuav dej yog qhov tseem ceeb tshwj xeeb rau cov khoom sib xyaw qhuav, uas yog cov khoom ntim ua ntej ntawm cov cement, xuab zeb, thiab cov khoom ntxiv. Thaum sib xyaw nrog dej ntawm qhov chaw ua haujlwm, cov mortars yuav tsum khaws cov dej noo txaus kom muaj dej txaus ntawm cov cement hais, yog li ua tiav tag nrho lub zog thiab kav ntev. Hauv cov ntsiab lus no, HPMC ua lub luag haujlwm tseem ceeb hauv kev tswj cov dej tuav thiab txhim kho kev ua haujlwm thiab kev ua haujlwm ntawm cov mortar.
HPMC Txhim Kho Cov Dej Txhaum Cai Li Cas
Dej-Solubility thiab Gel tsim: HPMC yog cov dej-soluble polymer uas tsim cov qauv zoo li gel thaum tov nrog dej. Cov qauv gel no tuaj yeem ntim cov dej molecules thiab txo cov evaporation, yog li ua kom cov mortar cov dej tuav tau. Cov gel tiv thaiv cov mortar los ntawm ziab sai heev, tswj cov qib dej noo thaum lub sijhawm kho.
viscosity tswj: Lub viscosity ntawm mortar mix yog cuam tshuam los ntawm lub xub ntiag ntawm HPMC, uas yuav pab nyob rau hauv stabilizing cov sib tov. Los ntawm kev ua kom cov viscosity, HPMC ua kom cov dej sib npaug sib npaug thoob plaws qhov sib xyaw thiab pab tiv thaiv kev sib cais ntawm cov dej thiab cov khoom sib xyaw. Qhov kev tswj cov viscosity no tsis tsuas yog txhim kho cov tshuaj khib nyiab dej tab sis kuj txhim kho nws txoj haujlwm, ua kom yooj yim rau kev thov thiab sib kis.
Kev tiv thaiv ntawm Premature Hardening: Thaum lub sij hawm siv cov mortar, cov tawv nqaij ntxov ntxov tuaj yeem tshwm sim vim kev poob dej sai. HPMC pab ua kom cov txheej txheem no qeeb qeeb los ntawm kev ua tus neeg saib xyuas dej. Qhov no ua kom cov mortar tseem moist rau lub sijhawm ntev, tso cai rau kev ua kom zoo dua rau ntawm qhov chaw thiab tiv thaiv cov kab nrib pleb uas tuaj yeem tsim vim tsis muaj dej tsis sib xws.
Txhim kho Adhesion: Raws li HPMC txhim kho kev tuav dej, nws ua kom ntseeg tau tias muaj qhov sib npaug ntawm cov dej noo rau cov cement hais kom hydrate thiab sib txuas nrog cov khoom sib xyaw. Qhov kev txhim kho hydration no ua rau muaj kev sib raug zoo ntawm cov tshuaj khib thiab cov substrate, txhim kho adhesion thiab kev ua haujlwm tag nrho. Nws yog qhov tshwj xeeb tshaj yog thaum ua haujlwm nrog cov khoom ntxeem tau, xws li cib lossis pob zeb, uas nyiam nqus dej sai sai.
Cov txiaj ntsig ntawm HPMC hauv Mortar
| Tau txais txiaj ntsig | Kev piav qhia |
| Txhim kho dej tuav | HPMC tsim cov gel uas pab khaws cov dej hauv cov mortar sib tov, tiv thaiv kom qhuav sai thiab ua kom pom dej zoo. |
| Txhim khu kev ua haujlwm | Qhov nce hauv viscosity txhim kho qhov sib xws ntawm kev sib xyaw, ua kom yooj yim rau kev thov, sib kis, thiab zoo li qub. |
| Txo Shrinkage thiab Cracking | Los ntawm kev tiv thaiv cov dej evaporation thaum ntxov, HPMC pab txo qhov tshwm sim ntawm cov kab nrib pleb uas tuaj yeem txhim kho vim shrinkage. |
| Tiv thaiv kev cais tawm | HPMC pab txhim kho qhov sib xyaw kom ruaj khov los ntawm kev ua kom muaj kev sib faib ntawm cov dej thiab cov sib sau ua ke, tiv thaiv kev sib cais. |
| Txhim kho Adhesion thiab Bonding | Kev tuav dej noo los ntawm HPMC txhawb nqa kev sib raug zoo ntawm cov mortar thiab substrate, txhim khu kev ruaj khov thiab lub zog. |
| Lub Sijhawm Qhib Ntxiv | Mortar uas muaj HPMC tseem tuaj yeem ua haujlwm tau ntev dua, tso cai rau ntau lub sijhawm rau kev hloov kho thiab kho thaum thov. |
| Txhim khu kev ua tau zoo hauv huab cua qhuav | Hauv cov cheeb tsam uas muaj cov evaporation siab, HPMC lub peev xwm khaws cov dej kom ntseeg tau tias cov mortar tseem ua haujlwm tau thiab tsis qhuav tawm ntxov. |
Kev siv ntawm HPMC hauv Mortar
HPMC feem ntau yog siv ntau hom mortars, suav nrog:
Pobzeb Adhesive: Hauv cov pobzeb teeb tsa mortars, HPMC txhim kho cov dej tuav, ua kom muaj dej kom zoo ntawm cov cement hais thiab txhim kho kev sib raug zoo ntawm cov pobzeb thiab cov substrate.
Thin-Bed Mortars: Nyias-txaj mortars, feem ntau yog siv rau cov pobzeb kev teeb tsa, tau txais txiaj ntsig los ntawm HPMC vim nws pab tswj kom muaj qhov sib npaug ntawm cov dej noo kom zoo rau kev sib raug zoo thiab kev teeb tsa.
Kho Mortars: Rau kev kho cov kab nrib pleb thiab qhov chaw puas, HPMC txhim kho cov dej tuav ntawm kev kho cov mortars, tso cai rau kev sib raug zoo nrog cov qauv uas twb muaj lawm thiab tiv thaiv kom qhuav sai.
Plaster thiab Stucco: Hauv daim ntawv thov plastering, HPMC xyuas kom meej tias cov mortar mix khaws cov dej txaus rau daim ntawv thov thiab kho kom zoo, tshwj xeeb tshaj yog nyob rau hauv kub lossis qhuav.
Dry-Mix Mortars: Cov khoom lag luam sib xyaw ua ntej, suav nrog cov khoom siv cib thiab kev tsim kho dav dav, tau txais txiaj ntsig los ntawm HPMC cov khoom tuav dej, uas txhim kho ob qho tib si khaws cia thiab kev ua haujlwm ntawm cov khoom thaum nws rov ua dej.
Cov yam ntxwv cuam tshuam rau kev ua tau zoo ntawm HPMC hauv Mortar
Thaum HPMC muaj cov txiaj ntsig tseem ceeb, nws cov txiaj ntsig hauv kev txhim kho cov dej tuav tau tuaj yeem cuam tshuam los ntawm ntau yam:
Concentration ntawm HPMC: Tus nqi ntawmAnxinCel®HPMC siv nyob rau hauv mortar mix ncaj qha cuam tshuam nws cov dej tuav cov khoom. HPMC tsawg dhau yuav tsis muab cov dej khaws cia txaus, thaum cov nyiaj ntau dhau tuaj yeem cuam tshuam tsis zoo rau cov viscosity thiab kev ua haujlwm.
Hom thiab Qib ntawm HPMC: Ntau hom thiab qib ntawm HPMC muaj nyob, txhua qhov sib txawv ntawm cov viscosity, solubility, thiab gel-forming peev xwm. Xaiv hom HPMC tsim nyog rau ib daim ntawv thov tshwj xeeb yog qhov tseem ceeb rau kev ua tiav cov dej tuav thiab kev ua haujlwm mortar.
Ib puag ncig tej yam kev mob: Mortar sib tov nrog HPMC tej zaum yuav coj txawv txawv nyob rau hauv ntau yam tej yam kev mob. Cov kub kub lossis cov av qis tuaj yeem ua rau cov evaporation nce ntxiv, uas tuaj yeem txo cov txiaj ntsig ntawm HPMC hauv dej tuav. Hauv cov xwm txheej zoo li no, kev ntsuas ntxiv yuav tsim nyog los xyuas kom muaj dej kom raug.
Compatibility nrog lwm yam additives: Cov tshuaj khib nyiab feem ntau muaj ntau yam khoom siv ntxiv, suav nrog cov yas yas, cov retarders, lossis accelerators. Kev sib cuam tshuam ntawm HPMC thiab lwm yam khoom xyaw yuav tsum raug txiav txim siab los xyuas kom meej tias lawv ua haujlwm sib koom ua ke los txhim kho cov mortar kev ua tau zoo.
HPMCyog ib qho tseem ceeb additive nyob rau hauv mortar formulations, feem ntau vim nws muaj peev xwm los txhim kho dej tuav. Los ntawm kev tsim cov qauv gel uas encapsulates dej molecules, HPMC pab tiv thaiv kom qhuav ntxov ntxov, txhim kho kev ua haujlwm ntawm cov khoom sib xyaw, thiab ua kom muaj dej zoo dua ntawm cov cement hais. Cov khoom no pab txhim kho adhesion, txo qis shrinkage, thiab txhim kho durability ntawm mortar. Kev siv ntawm AnxinCel®HPMC tshwj xeeb tshaj yog muaj txiaj ntsig zoo nyob rau hauv ib puag ncig nrog cov evaporation siab lossis rau cov ntawv thov uas yuav tsum tau qhib sijhawm ntev. Kev nkag siab txog yam uas cuam tshuam rau kev ua tau zoo ntawm HPMC thiab xaiv qhov tseeb concentration thiab hom rau txhua daim ntawv thov yog qhov tseem ceeb rau kev ua kom zoo ntawm mortar.
Post lub sij hawm: Feb-21-2025