HPMC (Hydroxypropyl Methylcellulose), raws li kev siv tshuaj lom neeg ntxiv, yog siv dav hauv cov khoom siv hauv tsev xws li mortars, coatings, thiab adhesives. Raws li cov thickener thiab hloov kho, nws tuaj yeem txhim kho kev ua haujlwm ntawm mortar.
1. Cov yam ntxwv tseem ceeb ntawm HPMC
HPMC yog cov khoom siv hluav taws xob semi-synthetic tau los ntawm kev hloov kho tshuaj ntawm cov nroj tsuag ntuj cellulose. Nws cov khoom tseem ceeb muaj xws li dej solubility zoo, thickening, film forming, dej tuav thiab kub tsis kam. Cov qauv molecular ntawm AnxinCel®HPMC muaj cov pab pawg xws li hydroxyl, methyl thiab propyl pawg, uas ua rau nws tsim hydrogen bonds nrog dej molecules hauv dej, yog li hloov cov viscosity thiab fluidity ntawm dej.
2. Lub ntsiab lus ntawm kev ua haujlwm ntawm mortar
Kev ua haujlwm ntawm mortar yog hais txog qhov yooj yim ntawm kev ua haujlwm, kev siv thiab tuav cov tshuaj khib thaum tsim kho, suav nrog nws cov yas, fluidity, adhesion thiab pumpability. Kev ua haujlwm zoo tuaj yeem ua rau cov mortar yooj yim dua thiab du thaum siv, thiab txo cov kev tsim kho xws li hollows thiab tawg. Yog li ntawd, kev txhim kho kev ua haujlwm ntawm mortar yog qhov tseem ceeb rau kev txhim kho kev tsim kho kom zoo thiab ua kom muaj kev ua haujlwm zoo.
3. Kev cuam tshuam ntawm HPMC ntawm kev ua haujlwm ntawm mortar
Txhim kho cov dej tuav ntawm mortar
HPMC tuaj yeem txhim kho cov dej tuav ntawm mortar. Nws txo cov evaporation ntawm cov dej los ntawm kev tsim cov hydration txheej, yog li ncua lub sij hawm qhib ntawm lub mortar thiab tiv thaiv lub mortar los ntawm qhuav tawm sai heev los yog poob dej. Tshwj xeeb tshaj yog nyob rau hauv kub lossis qhuav ib puag ncig, HPMC tuaj yeem tswj cov dej noo ntawm cov mortar thiab tiv thaiv nws los ntawm hardening ntxov ntxov, ua rau lub mortar yooj yim rau kev khiav lag luam thaum lub sij hawm tsim kho. Nws yog tshwj xeeb tshaj yog haum rau loj-chaw tsim kho thiab nyias-txheej plastering ua hauj lwm.
Txhim kho qhov adhesion ntawm mortar
HPMC tuaj yeem txhim kho kev sib raug zoo ntawm mortar thiab puag saum npoo. Nws cov pawg ua haujlwm saum npoo av (xws li methyl thiab hydroxypropyl) tuaj yeem cuam tshuam nrog cov cement hais thiab lwm yam zoo aggregates los txhim kho cov cohesion thiab adhesion ntawm cov mortar, yog li txhim kho cov mortar tiv thaiv tev. Qhov kev txhim kho adhesion tuaj yeem txo qhov kev pheej hmoo ntawm txheej txheej lossis plaster txheej ntog thiab txhim kho kev ntseeg tau ntawm kev tsim kho.
Txhim kho qhov fluidity ntawm mortar
HPMC txhim kho qhov fluidity ntawm mortar los ntawm thickening, ua kom yooj yim rau cov neeg ua haujlwm tsim kho thaum lub sij hawm tsim kho. Fluidity yog ib qho ntawm cov cim tseem ceeb ntawm kev ua haujlwm ntawm mortar. Zoo fluidity pab kom sai sai rau cov cheeb tsam loj los yog complex-zoo li tus tsim, txo lub sij hawm tsim kho. HPMC tuaj yeem ua kom zoo dua cov khoom rheological ntawm mortar kom tswj tau qhov dej zoo thiab ruaj khov thaum lub sij hawm siv, khawb thiab lwm yam haujlwm, thiab tsis txhob los ntshav lossis dej sib cais.
Kho qhov sib xws thiab smoothness ntawm mortar
Qhov sib xws ntawm mortar ncaj qha cuam tshuam qhov yooj yim ntawm kev tsim kho. AnxinCel®HPMC tuaj yeem tswj tau qhov sib xws ntawm mortar los ntawm kev kho nws cov nyiaj ntxiv kom cov mortar tsis nyias dhau los tsis hnyav dhau los ua kom cov txiaj ntsig tsim nyog. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem ua rau kom muaj kev sib txhuam ntawm cov mortar thiab txo kev sib txhuam thaum lub sij hawm tsim kho, yog li txo qhov qaug zog thaum lub sij hawm ua haujlwm thiab txhim kho kev tsim kho.
Ntxiv sijhawm qhib
Hauv kev siv tshuaj khib nyiab, lub sijhawm qhib yog hais txog lub sijhawm uas lub mortar tseem tuaj yeem tuav tau zoo adhesion tom qab siv rau hauv lub hauv paus nto. HPMC muaj qhov cuam tshuam ntawm kev ncua cov dej evaporation, uas tuaj yeem txuas ntxiv lub sijhawm qhib ntawm mortar, tshwj xeeb tshaj yog nyob rau hauv qhov kub thiab txias ib puag ncig. Lub sijhawm qhib txuas ntxiv tuaj yeem tsis tsuas yog txhim kho kev tsim kho kom raug, tab sis kuj tseem ua kom tsis txhob muaj teeb meem xws li pob qij txha thiab hollows thaum lub sijhawm tsim kho.
Txo cov ntshav thiab delamination
Los ntshav thiab delamination yuav tshwm sim thaum lub sij hawm tsim kho ntawm mortar, uas yog tshwj xeeb tshaj yog muaj nyob rau hauv cov cement mortar. HPMC pab tiv thaiv kev sib cais dej thiab nag lossis daus thiab txo cov ntshav los ntawm kev ua kom cov txheej txheem viscosity ntawm cov tshuaj khib thiab txhim kho kev sib cuam tshuam ntawm nws cov molecules sab hauv. Qhov no tso cai rau lub mortar kom muaj kev sib raug zoo thiab kev ruaj ntseg tom qab muab tso rau lub sijhawm ntev thiab tsis txhob muaj kev tsim kho.
Txhim kho qhov Frost tsis kam ntawm mortar
Hauv cov cheeb tsam txias, qhov Frost tsis kam ntawm mortar yog qhov tseem ceeb tshwj xeeb. Vim nws cov qauv tshwj xeeb, HPMC tuaj yeem tsim kom muaj kev ruaj khov hydration network hauv mortar, txo qhov kev pheej hmoo ntawm kev ya raws. Los ntawm kev ntxiv qhov tsim nyog ntawm HPMC rau hauv cov tshuaj khib nyiab, cov tshuaj khib nyiab tuaj yeem txhim kho tau zoo, tiv thaiv cov kab nrib pleb ntawm qhov chaw nyob hauv qhov kub thiab txias, thiab ua kom muaj kev tsim kho zoo.
4. Kev ceev faj rau kev siv HPMC
Txawm hais tias HPMC tuaj yeem txhim kho kev ua haujlwm ntawm mortar, cov ntsiab lus hauv qab no yuav tsum tau muab sau tseg thaum siv:
Kev tswj hwm ntawm qhov sib ntxiv: HPMC ntau ntxiv yuav ua rau muaj viscosity ntau dhau ntawm cov tshuaj khib, cuam tshuam rau nws cov dej ntws thiab ua haujlwm; Ntxiv me ntsis ntxiv yuav tsis txaus los txhim kho kev ua haujlwm. Yog li ntawd, qhov tsim nyog ntxiv tus nqi yuav tsum tau hloov kho raws li qhov xav tau tshwj xeeb ntawm mortar thiab ib puag ncig kev tsim kho.
Kev sib raug zoo nrog lwm cov tshuaj ntxiv: HPMC tuaj yeem muaj qee yam kev cuam tshuam nrog lwm cov khoom siv hauv tsev (xws li cov neeg ua haujlwm hauv huab cua, tshuaj tiv thaiv kab mob, thiab lwm yam), yog li nws qhov kev sib raug zoo nrog lwm cov ntaub ntawv yuav tsum tau sim hauv cov mis kom tsis txhob muaj kev phiv tshuaj.
Cia tej yam kev mob: HPMC yuav tsum tau muab cia rau hauv ib tug qhuav, ventilated ib puag ncig, deb ntawm noo noo thiab kub kub, kom nws cov kev ua tau zoo.
Raws li ib qho tseem ceeb mortar additive,HPMCplays lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm ntawm mortar. Nws tuaj yeem txhim kho cov dej tuav, fluidity, adhesion thiab Frost tsis kam ntawm mortar, ncua lub sijhawm qhib thiab txhim kho kev tsim kho. Raws li kev tsim kho kev lag luam cov kev xav tau rau kev ua haujlwm mortar txuas ntxiv mus ntxiv, AnxinCel®HPMC yuav siv dav dua thiab xav tias yuav ua lub luag haujlwm ntau dua hauv kev tsim ntawm ntau hom mortar yav tom ntej. Txawm li cas los xij, nyob rau hauv cov txheej txheem thov tiag tiag, cov neeg ua haujlwm tsim kho yuav tsum tau kho cov tshuaj HPMC raws li kev tsim kho sib txawv thiab ib puag ncig kom ua tiav cov txiaj ntsig zoo tshaj plaws.
Post lub sij hawm: Jan-02-2025