Pobzeb nplaum ua lub luag haujlwm tseem ceeb hauv kev tsim kho kev lag luam, ua kom muaj kev ruaj ntseg ntawm cov vuas rau ntau lub substrates.Hydroxypropyl Methylcellulose (HPMC) yog cov khoom siv tseem ceeb hauv ntau cov pobzeb niaj hnub no, muab cov khoom nplaum zoo dua qub thiab ua haujlwm tau zoo.
1.Kev nkag siab txog Hydroxypropyl Methylcellulose (HPMC):
HPMC yog ib qho cellulose derivative feem ntau siv hauv cov ntaub ntawv tsim kho rau nws cov nplaum, thickening, thiab dej tuav cov khoom.
Nws yog muab los ntawm ntuj cellulose thiab ua tiav rau hauv cov hmoov zoo.
HPMC txhim kho lub zog sib txuas ntawm cov nplais nplaum thaum txhim kho lawv cov haujlwm ua haujlwm thiab cov yam ntxwv tuav dej.
2.Formulation ntawm HPMC-raws li pobzeb Adhesive:
a.Cov khoom xyaw tseem ceeb:
Portland MAAs: Muab tus neeg sawv cev khi ua ke.
Cov xuab zeb zoo los yog muab tub lim: Txhim kho kev ua haujlwm thiab txo qis qis.
Dej: Yuav tsum tau hydration thiab workability.
Hydroxypropyl Methylcellulose (HPMC): Ua raws li tus neeg sawv cev thickening thiab bonding.
Additives: Tej zaum yuav muaj xws li polymer modifiers, dispersants, thiab anti-sag agents rau tej kev ua tau zoo.
b.Kev faib ua feem:
Qhov kev faib ua feem ntawm txhua cov khoom sib txawv nyob ntawm seb yam xws li hom pobzeb, substrate, thiab ib puag ncig.
Ib qho kev tsim qauv yuav muaj 20-30% cement, 50-60% xuab zeb, 0.5-2% HPMC, thiab cov ntsiab lus dej tsim nyog kom ua tiav qhov xav tau sib xws.
c.Cov txheej txheem sib xyaw:
Qhuav sib tov cov cement, xuab zeb, thiab HPMC kom huv si kom ntseeg tau tias muaj kev sib faib.
Maj mam ntxiv dej thaum sib tov kom txog thaum qhov kev xav tau ua tiav.
Sib tov kom txog thaum tau txais cov hmoov nplej dawb, ua kom muaj dej kom zoo ntawm cov cement hais thiab dispersion ntawm HPMC.
3.Daim ntawv thov ntawm HPMC-raws li pobzeb Adhesive:
a.Kev npaj nto:
Xyuas kom meej tias lub substrate yog huv si, muaj suab nrov, thiab tsis muaj plua plav, roj, thiab cov kab mob.
Rough los yog tsis sib xws tej zaum yuav tsum tau leveling los yog priming ua ntej daim ntawv thov nplaum.
b.Cov txheej txheem siv:
Daim Ntawv Thov Trowel: Txoj kev siv ntau tshaj plaws yog siv cov trowel los nthuav cov nplaum rau hauv cov substrate.
Back-buttering: Siv ib txheej nyias ntawm cov nplaum rau sab nraub qaum ntawm cov vuas ua ntej muab tso rau hauv lub txaj nplaum tuaj yeem txhim kho kev sib raug zoo, tshwj xeeb tshaj yog rau cov vuas loj lossis hnyav.
Spot Bonding: Tsim nyog rau cov vuas sib sib zog nqus lossis cov ntawv siv kho kom zoo nkauj, suav nrog kev siv cov nplaum rau hauv thaj ua rau me me es tsis txhob kis mus rau tag nrho cov substrate.
c.Pobzeb Installation:
Nias cov vuas kom ruaj khov rau hauv lub txaj nplaum, kom ntseeg tau tias muaj kev sib cuag thiab kev tiv thaiv ib puag ncig.
Siv spacers los tswj cov pob qij txha zoo sib xws.
Kho cov pobzeb sib dhos kom sai ua ntej cov nplaum nplaum.
d.Curing thiab Grouting:
Tso cai rau cov nplaum los kho raws li cov chaw tsim khoom cov lus qhia ua ntej grouting.
Grout cov vuas siv cov khoom tsim nyog grout, sau cov pob qij txha kom tiav thiab smoothing nto.
4.Qhov zoo ntawm HPMC-raws li pobzeb Adhesive:
Txhim kho Bonding Strength: HPMC txhim kho adhesion rau ob lub vuas thiab substrates, txo qhov kev pheej hmoo ntawm pobzeb detachment.
Txhim Kho Kev Ua Haujlwm Zoo: Lub xub ntiag ntawm HPMC txhim kho kev ua haujlwm thiab qhib lub sijhawm ntawm cov nplaum, tso cai rau kev siv yooj yim dua thiab hloov cov vuas.
Kev tuav dej: HPMC pab khaws cov dej noo nyob rau hauv cov nplaum, txhawb nqa dej kom zoo ntawm cov cement thiab tiv thaiv kom qhuav ntxov ntxov.
HPMC-raws li pobzeb nplaum muaj cov kev daws teeb meem txhim khu kev qha rau ntau yam ntaub ntawv tiling, muab cov adhesion muaj zog, txhim kho kev ua haujlwm, thiab txhim khu kev ruaj ntseg.Los ntawm kev nkag siab txog kev tsim thiab kev siv cov txheej txheem tau teev tseg hauv phau ntawv qhia no, cov kws tshaj lij kev tsim kho tuaj yeem siv HPMC cov nplaum kom ua tiav cov pobzeb zoo.
Lub sij hawm xa tuaj: Plaub Hlis-15-2024