HPMC, nws lub npe tag nrho yog Hydroxypropyl Methylcellulose, yog ib qho tshuaj lom neeg ntau yam uas siv rau hauv cov khoom siv hauv tsev. Hauv cov nplais pobzeb tso, HPMC ua lub luag haujlwm tseem ceeb thiab feem ntau yog siv rau hauv cov pobzeb nplaum, cov hmoov putty, thiab lwm yam hauv tsev mortars los txhim kho cov khoom siv thiab kev tsim kho kom yooj yim.
1.Basic zog ntawm HPMC
HPMC yog cellulose ether ua los ntawm chemically modified natural cellulose. Nws muaj cov yam ntxwv tseem ceeb hauv qab no:
Thickening: HPMC muaj peev xwm ua kom cov viscosity ntawm cov kua los yog pasty cov ntaub ntawv, uas yog ib qho tseem ceeb rau cov pobzeb adhesives thiab mortars. Cov khoom thickened muaj adhesion zoo dua thiab tuaj yeem tiv thaiv cov vuas los ntawm zawv zawg thaum tso.
Kev tuav dej: HPMC zoo khaws cov dej hauv cov khoom siv cement, txuas ntxiv lub sijhawm qhib ntawm koj cov mortar lossis pobzeb nplaum. Qhov no txhais tau hais tias cov neeg ua haujlwm muaj sijhawm ntau los hloov kho thaum tso cov vuas, thiab nws kuj tseem pab cov cement kom hydrate tag nrho, txhim kho qhov kawg ntawm daim ntawv cog lus.
Lubricity: HPMC ua rau cov mortar ntau dua thiab ua haujlwm tau zoo, txo kev sib txhuam thaum tsim kho thiab tso cai rau cov neeg ua haujlwm nteg cov vuas yooj yim dua.
Adhesion: HPMC muab cov khoom zoo adhesion, ua rau kev sib raug zoo ntawm cov vuas thiab cov substrate muaj zog thiab txo qhov kev pheej hmoo ntawm cov vuas poob.
2.Application nyob rau hauv ceramic pobzeb tso
Hauv cov nplais pobzeb tso, HPMC feem ntau yog siv los ua kev hloov kho rau cov nplais nplaum thiab cov mortars. Tshwj xeeb, HPMC tau ua lub luag haujlwm zoo hauv cov pobzeb ceramic tso rau hauv cov hauv qab no:
Txhim kho kev tsim kho: HPMC ua kom cov dej khaws cia thiab ua haujlwm ntawm cov nplais nplaum, tso cai rau cov neeg ua haujlwm kom muaj lub sijhawm hloov kho ntev dua thaum tso cov vuas tsis txhawj txog cov kua nplaum kom qhuav sai. Qhov no txo qhov muaj peev xwm ntawm rework thiab txhim kho kev tsim kho kom zoo.
Txhim kho qhov zoo: Los ntawm kev txhim kho lub zog sib txuas ntawm cov nplais nplaum, HPMC pab tiv thaiv cov teeb meem zoo xws li hollowing thiab poob ntawm cov vuas thaum lub sij hawm ziab. Nws cov cuab yeej thickening kuj ua rau cov pobzeb nplaum tsis tshua muaj dej thaum tso rau ntawm facades lossis ceilings, kom ntseeg tau tias kev huv thiab kev ua haujlwm ntawm kev tsim kho.
Hloov tau rau ntau qhov chaw tsim kho: Cov dej tuav tau zoo los ntawm HPMC tso cai rau cov nplais nplaum kom ruaj khov kev tsim kho hauv qhov kub thiab txias, thiab yuav tsis ua rau tsis txaus adhesion vim dej evaporation sai.
3. Ceev faj thaum tsim kho
Thaum siv cov nplais nplaum los yog mortar uas muaj HPMC, cov neeg ua haujlwm yuav tsum tau xyuam xim rau cov ntsiab lus hauv qab no:
Qhov kev faib ua feem yuav tsum yog qhov tseeb: tus nqi ntawm HPMC ncaj qha cuam tshuam rau kev ua haujlwm ntawm cov nplais nplaum. Ntau dhau los yog tsawg dhau yuav ua rau kev tsim kho tsis zoo. Yog li ntawd, qhov proportioning yuav tsum nruj me ntsis raws li cov khoom qhia.
Sib xyaw kom zoo: Thaum tsim cov pobzeb nplaum los yog mortar, HPMC yuav tsum tau muab sib xyaw nrog lwm cov ntaub ntawv kom ntseeg tau tias nws cov khoom tuaj yeem siv sib npaug. Kev sib xyaw tsis raug yuav ua rau muaj qhov adhesion hauv zos tsis txaus lossis ziab tsis sib xws.
Ua kom huv: Thaum lub sij hawm txheej txheem ntawm cov vuas luaj ceramic, cov cuab yeej tsim kho thiab ib puag ncig yuav tsum tau ua kom huv si kom tsis txhob muaj impurities sib xyaw thiab cuam tshuam rau kev sib koom ua ke.
Raws li kev siv lub tsev muaj txiaj ntsig zoo, HPMC plays lub luag haujlwm hloov tsis tau hauv cov pobzeb ceramic. Nws tsis tsuas yog txhim kho kev ua tau zoo ntawm cov nplais nplaum thiab cov mortars, tab sis kuj txhim kho kev tsim kho kom zoo thiab qhov kawg. Yog li ntawd, HPMC yog ib qho tseem ceeb heev thiab siv dav hauv kev tsim vaj tsev niaj hnub.
Post lub sij hawm: Aug-16-2024