Hydroxypropyl methylcellulose (HPMC)rau kev tsim kho yog ib qho tseem ceeb hauv tsev cov khoom siv ntxiv, dav siv hauv cov cement, mortar, gypsum, ceramics thiab lwm yam khoom siv hauv tsev. Nws ua lub luag haujlwm tseem ceeb hauv kev tsim kho kev lag luam, feem ntau vim tias nws tuaj yeem muab ntau yam haujlwm, xws lithickening, dej tuav, bonding, dispersion, lwm.
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1. Basic Overview of Hydroxypropyl Methylcellulose (HPMC)
Hydroxypropyl methylcellulose yog dej-soluble polymer compound muab rho tawm los ntawm cov nroj tsuag ntuj fibers (xws li ntoo pulp, paj rwb, thiab lwm yam). Nws yog hloov kho cellulose tau los ntawm cov tshuaj tiv thaiv ntawm cellulose. Hydroxypropyl methylcellulose muaj hydroxypropyl thiab methyl pawg hauv nws cov qauv molecular, yog li nws muaj zog hydrophilicity, dej solubility zoo thiab kev ua haujlwm thickening.
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2. Lub luag haujlwm tseem ceeb ntawm HPMC rau kev tsim kho
Kev tuav dej
Hauv cov khoom siv hauv tsev xws li cement, mortar thiab putty, evaporation tus nqi ntawm cov dej yog ceev ceev, thiab HPMC muaj cov dej tuav tau zoo, uas tuaj yeem ncua cov txheej txheem cement hydration thiab xyuas kom meej tias cov sib tov khaws cov dej txaus thaum lub sijhawm kho. Qhov no tsis tsuas yog txhim kho lub zog ntawm cov khoom siv, tab sis kuj txhim kho kev tsim kho kom zoo.
Thickening
HPMC tuaj yeem txhim kho qhov viscosity ntawm cov ntaub ntawv hauv tsev, kho cov dej ntws tawm thaum lub sij hawm tsim kho, thiab ua kom cov khoom yooj yim los tswj thaum siv. Piv txwv li, tom qab ntxiv HPMC rau mortar lossis pobzeb nplaum, lub thickness thiab adhesion ntawm slurry tuaj yeem nce ntxiv, yog li txhim kho kev tsim kho thiab kev ua haujlwm.
Txhim kho kev tsim kho kev ua haujlwm
Qhov sib ntxiv ntawm hydroxypropyl methylcellulose tuaj yeem txhim kho kev tsim kho kev ua haujlwm ntawm cov khoom siv hauv tsev, ua rau cov ntaub ntawv zoo dua ductility thiab noo noo. Qhov no ua kom ntseeg tau tias thaum lub sij hawm tsim kho, tshwj xeeb tshaj yog thaum tsim ib cheeb tsam loj, cov khoom siv tuaj yeem sib npaug sib npaug los yog smoothed, txo qhov tawg los ntawm kev ziab sai heev.
Txhim kho adhesion
Hauv cov nplais nplaum, HPMC tuaj yeem tsis tsuas yog ua kom cov viscosity ntawm mortar, tab sis kuj txhim kho cov adhesion ntawm mortar rau hauv paus nto thiab cov vuas, tiv thaiv cov vuas los ntawm loosening thiab ntog tawm, yog li txhim kho cov adhesion thiab stability ntawm cov khoom.
Txhim kho huab cua tsis kam
Hydroxypropyl methylcellulose kuj tseem tuaj yeem txhim kho kev laus ntawm cov ntaub ntawv, yog li lub tsev coatings thiab lwm yam khoom siv hauv tsev tseem tuaj yeem tswj tau qhov kev ua tau zoo nyob rau hauv ib puag ncig raug tshav ntuj, noo noo thiab kub hloov mus rau lub sijhawm ntev, ncua kev pab cuam lub neej ntawm cov khoom siv hauv tsev.
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3. Kev siv HPMC hauv kev tsim kho
Cov nplaum nplaum
Pobzeb nplaum yog qhov tseem ceeb ntawm daim ntawv thov ntawm HPMC. Nws tuaj yeem tsis tsuas yog txhim kho lub zog sib txuas, tab sis kuj tseem txhim kho kev tsim kho kev ua haujlwm, kom ntseeg tau tias cov vuas tuaj yeem ruaj khov rau ntawm phab ntsa lossis hauv pem teb, thiab zam cov vuas los ntawm kev poob vim cov khoom siv los yog huab cua.
Phab ntsa putty
Phab ntsa putty yog lwm daim ntawv thov loj. Phab ntsa putty nrog HPMC muaj kev ua kom zoo dua qub, plasticity thiab dej tuav, thiab tuaj yeem tsim ib txheej txheej txheej ntawm cov phab ntsa ntawm cov ntaub ntawv sib txawv, txo cov npuas npuas thiab tawg thaum siv.
Qhuav mortar
Hauv mortar qhuav, HPMC tuaj yeem txhim kho kev ua haujlwm thiab kev sib txuas ntawm cov tshuaj khib nyiab. Nws tuaj yeem ua kom cov dej tuav ntawm mortar, tiv thaiv kev tawg los ntawm kev ziab sai heev, thiab txhim kho cov adhesion ntawm mortar, txo cov plam ntawm cov cement thiab hauv paus nto.
Cement-based self-leveling khoom
Self-leveling pem teb cov ntaub ntawv muaj fluidity siab thiab nws tus kheej-leveling zog. Kev siv HPMC tuaj yeem txhim kho nws cov fluidity, thickening thiab dej tuav, thiab xyuas kom meej qhov flatness thiab kev tsim kho ntawm cov av txheej.
Gypsum khoom
Daim ntawv thov ntawm hydroxypropyl methylcellulose nyob rau hauv gypsum khoom yog tsuas yog los txhim kho lub fluidity, adhesion thiab dej tuav ntawm gypsum slurry, thiab xyuas kom meej kev tsim kho ntawm gypsum thiab qhov zoo tom qab kawg hardening.
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4. Cov yam ntxwv thiab kev ua haujlwm ntawm cov dej khaws cia cellulose siab
Tsis zoo li HPMC zoo tib yam, cov dej khaws cia cellulose yog qhov tshwj xeeb hloov kho HPMC nrog cov dej tuav ruaj khov dua. Nws feem ntau yog siv rau lub sijhawm uas yuav tsum tau khaws dej ntev dua, xws li qee qhov muaj zog thiab ruaj khov rau lub tsev ntev. Ntxiv nrog rau kev ua tau zoo ntawm cov thickening thiab fluidity txhim kho cov khoom ntawm HPMC zoo tib yam, cov dej khaws cia cellulose kuj tseem tuaj yeem muab kev ua haujlwm zoo dua hauv qhov chaw nruj dua. Nws tau siv dav hauv cov khoom sib xyaw qhuav, plaster mortar thiab lwm yam khoom siv hauv tsev uas yuav tsum tau nyob twj ywm rau lub sijhawm ntev.
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5. Xaiv tus neeg muab khoom HPMC txoj cai
Xaiv tus neeg muab khoom HPMC txoj cai yog qhov tseem ceeb. Ib tus neeg ua haujlwm zoo HPMC yuav tsum tau muabcov ntaub ntawv zoo raw khoom, xyuas kom meej tias nws cov khoom muaj kev ua haujlwm ruaj khov, thiab nruj me ntsis tswj qhov zoothaum lub sij hawm tsim khoom. Tsis tas li ntawd, tus neeg muag khoom yuav tsum tau muab kev txhawb nqa kev nplua nuj los pab cov neeg siv khoom kho tus nqi thiab cov qauv ntawm HPMC raws li kev tsim kho sib txawv.
Qee cov tuam txhab HPMC paub zoo, xws li qee lub tuam txhab tshuaj lom neeg loj hauv Suav teb, tuaj yeem muab ntau yam khoom lag luam kom tau raws li cov kev xav tau ntawm kev tsim kho me me rau cov phiaj xwm loj. Txhawm rau kom ntseeg tau tias qhov zoo thiab kev nyab xeeb ntawm kev tsim kho, nws raug nquahu kom xaiv cov khoom siv nrogzoo lub koob npe nrov thiab paub tab technologythaum yuav khoom.
Hydroxypropyl methylcellulose yog sivthiab cov dej khaws cia siab cellulose rau kev tsim kho ua lub luag haujlwm tseem ceeb hauv kev lag luam niaj hnub tsim. Lawv tsis tsuas yog txhim kho kev ua haujlwm ntawm cov khoom siv hauv tsev thiab kev tsim kho kom zoo, tab sis kuj ua rau cov khoom tsim kho kom ruaj khov thiab txhim khu kev qha. Thaum xaiv HPMC, xav txog nws cov kev ua haujlwm thiab kev muaj peev xwm ntawm tus neeg muag khoom yog qhov tseem ceeb los xyuas kom meej tias kev ua tiav ntawm txoj haujlwm tsim kho.
Post lub sij hawm: Jun-12-2025