1. Kev tuav dej
Kev tuav dej hauv plastering mortar yog qhov tseem ceeb.Hydroxypropyl Methylcellulose (HPMC)muaj peev xwm tuav tau dej. Tom qab ntxiv HPMC rau plastering mortar, nws muaj peev xwm tsim ib tug dej-txuas network qauv nyob rau hauv lub mortar tiv thaiv dej los ntawm absorbed los yog evaporated sai heev los ntawm lub hauv paus. Piv txwv li, thaum plastering ntawm qee lub hauv paus qhuav, yog tias tsis muaj kev ntsuas dej zoo, cov dej hauv cov mortar yuav sai sai absorbed los ntawm lub hauv paus, ua rau cov dej tsis txaus ntawm cov cement. Lub hav zoov ntawm HPMC zoo li "micro-reservoir". Raws li cov kev tshawb fawb cuam tshuam, plastering mortar nrog tus nqi tsim nyog ntawm HPMC tuaj yeem khaws cov dej noo rau ob peb teev lossis hnub ntev dua li qhov tsis muaj HPMC nyob rau hauv tib qhov chaw. Qhov no muab cov cement txaus lub sij hawm rau undergo hydration cov tshuaj tiv thaiv, yog li txhim kho lub zog thiab durability ntawm plastering mortar.
Kev tuav dej kom tsim nyog tuaj yeem txhim kho kev ua haujlwm ntawm plastering mortar. Yog hais tias lub mortar poob dej sai heev, nws yuav qhuav thiab nyuaj rau kev khiav lag luam, thaum HPMC tuaj yeem tswj cov yas ntawm cov mortar, kom cov neeg ua haujlwm tsim kho muaj sijhawm txaus rau theem thiab du plaster mortar.
2. Adhesion
HPMC tuaj yeem txhim kho qhov adhesion ntawm plaster mortar thiab lub hauv paus. Nws muaj cov khoom sib txuas zoo, uas tuaj yeem ua rau cov mortar zoo dua nyob rau hauv lub hauv paus nto xws li phab ntsa thiab pob zeb. Hauv kev siv tswv yim, qhov no pab tiv thaiv hollowing thiab ntog ntawm plaster mortar. Thaum HPMC molecules cuam tshuam nrog qhov chaw ntawm lub hauv paus thiab cov khoom nyob rau hauv lub mortar, ib tug sib txuas network yog tsim. Piv txwv li, thaum plastering ib co pob zeb du nto, plaster mortar nrog HPMC ntxiv tuaj yeem ua kom ruaj khov rau saum npoo, txhim kho kev ruaj ntseg ntawm tag nrho cov qauv plastering, thiab xyuas kom zoo ntawm qhov project plastering.
Rau cov hauv paus ntawm cov khoom sib txawv, HPMC tuaj yeem ua lub luag haujlwm txhim kho kev sib raug zoo. Txawm hais tias nws yog masonry, ntoo lossis hlau puag, tsuav yog nws nyob rau hauv qhov chaw uas yuav tsum tau plaster mortar, HPMC tuaj yeem txhim kho kev sib raug zoo.
3. Ua haujlwm tau
Txhim kho kev ua haujlwm. Qhov sib ntxiv ntawm HPMC ua rau cov plastering mortar ua haujlwm tau zoo dua, thiab cov mortar ua softer thiab smoother, uas yooj yim rau kev tsim kho. Cov neeg ua haujlwm tsim kho tuaj yeem kis tau thiab khawb cov tshuaj khib nyiab yooj yim dua thaum siv nws, txo qhov nyuaj thiab ua haujlwm ntawm kev tsim kho. Qhov no yog tshwj xeeb tshaj yog ib qho tseem ceeb nyob rau hauv loj-scale plastering tej yaam num, uas yuav txhim kho kev tsim kho efficiency thiab zoo.
Anti-sagging. Thaum plastering ntawm ntsug los yog inclined nto, plastering mortar yog nquag sagging, uas yog, lub mortar ntws downward nyob rau hauv qhov kev txiav txim ntawm lub ntiajteb txawj nqus. HPMC tuaj yeem ua kom cov viscosity thiab sib xws ntawm cov tshuaj khib thiab tiv thaiv sagging. Nws tso cai rau cov mortar kom nyob twj ywm nyob rau hauv txoj hauj lwm thov yam tsis muaj zawv zawg los yog ntws thiab deforming, kom ntseeg tau lub tiaj tus thiab zoo nkauj ntawm plastering. Piv txwv li, nyob rau hauv kev tsim kho ntawm cov phab ntsa sab nrauv ntawm cov tsev, plastering mortar nrog HPMC ntxiv tuaj yeem hloov tau zoo rau kev tsim kho ntawm phab ntsa ntsug, thiab kev tsim kho yuav tsis cuam tshuam los ntawm sagging.
4. Lub zog thiab kav ntev
Txij li thaumHPMCUa kom cov hydration tag nrho ntawm cov cement, lub zog ntawm plastering mortar yog txhim kho. Qhov siab dua ntawm cov cement hydration, cov khoom hydration ntau yog generated. Cov khoom hydration no yog interwoven los tsim cov qauv, yog li kev txhim kho lub zog ntsuas ntawm mortar, xws li compression thiab flexural zog. Nyob rau hauv lub sij hawm ntev, qhov no kuj pab txhim kho lub durability ntawm plastering mortar.
Hais txog kev ua haujlwm ntev, HPMC tuaj yeem ua lub luag haujlwm hauv kev ua haujlwm tawg. Nws txo qhov tshwm sim ntawm qhuav shrinkage kab nrib pleb tshwm sim los ntawm qhov tsis sib xws ntawm noo noo los ntawm kev tuav ib tug uniform faib ntawm noo noo nyob rau hauv mortar. Nyob rau tib lub sijhawm, cov dej tuav pov hwm ntawm HPMC ua rau cov mortar tiv thaiv kev yaig ntawm lwm qhov chaw ib puag ncig thaum siv mus sij hawm ntev, xws li tiv thaiv kev nkag mus ntawm cov dej noo ntau dhau, txo qhov kev puas tsuaj rau cov mortar qauv los ntawm khov-thaw mus, thiab lwm yam, yog li ncua lub neej kev pab cuam ntawm plastering mortar.
Post lub sij hawm: Dec-13-2024