HPMC hauv Plastering Plaster

Hydroxypropyl Methylcellulose (HPMC) feem ntau yog siv rau hauv daim ntaub ntawv plastering los txhim kho kev ua hauj lwm, adhesion, thiab kev ua tau zoo ntawm plaster mix. Nov yog li cas HPMC siv hauv plastering plaster:

1. Kev tuav dej: HPMC muaj cov khoom tuav dej zoo heev, tso cai rau nws tuav dej hauv plaster sib tov. Qhov no yuav pab tiv thaiv kom tsis txhob poob dej sai thaum lub sij hawm thov thiab kho, ua kom muaj dej txaus ntawm cov ntaub ntawv cementitious thiab txhawb kom tsim nyog thiab kho cov plaster.
2. Kev Txhim Kho Kev Ua Haujlwm: HPMC ua raws li kev hloov kho rheology, txhim kho kev ua haujlwm thiab sib xws ntawm plaster sib tov. Nws txo cov viscosity ntawm qhov sib tov, ua kom yooj yim rau kev thov, sib kis, thiab ua haujlwm nrog. Qhov no yog tshwj xeeb tshaj yog ib qho tseem ceeb rau ua tiav ib tug du thiab uniform nto tiav thaum plastering.
3. Txhim kho Adhesion: HPMC txhim kho cov khoom adhesion ntawm plaster, txhawb kev sib raug zoo ntawm plaster thiab substrate. Qhov no ua rau kev txhim kho adhesion lub zog, txo kev tawg, thiab txhim kho lub zog ntawm plaster system.
4. Crack Resistance: Los ntawm kev txhim kho adhesion thiab txo qhov shrinkage, HPMC pab txo qhov tshwm sim ntawm cov kab nrib pleb hauv plaster. Qhov no yog qhov tshwj xeeb tshaj yog muaj txiaj ntsig zoo hauv kev siv plastering sab nrauv, qhov uas cuam tshuam rau ib puag ncig xws li kub hloov pauv thiab noo noo tuaj yeem ua rau tawg.
5. Sag Resistance: HPMC pab txo qis sagging thiab slumping ntawm plaster thaum lub sij hawm thov, tshwj xeeb tshaj yog nyob rau ntsug nto. Qhov no ua kom lub plaster tuav nws qhov xav tau tuab thiab sib xws, tiv thaiv kev tsis sib xws thiab ua kom tiav qhov zoo.
6. Tswj Lub Sijhawm Teeb Meem: HPMC tuaj yeem siv los tswj lub sijhawm teem sijhawm ntawm plaster sib tov, tso cai rau ncua sijhawm ua haujlwm lossis nrawm nrawm raws li xav tau. Qhov no muab kev yooj yim hauv cov txheej txheem thov thiab tso cai rau kev tswj kom zoo dua ntawm kev kho thiab ziab ntawm plaster.
7. Kev Siv Tshuaj thiab Daim Ntawv Thov: Qhov ntau npaum li cas ntawm HPMC hauv plastering plaster feem ntau yog li ntawm 0.1% mus rau 0.5% los ntawm qhov hnyav ntawm kev sib xyaw qhuav, nyob ntawm seb cov kev cai tshwj xeeb ntawm daim ntawv thov thiab cov yam ntxwv ntawm kev ua haujlwm ntawm plaster. HPMC feem ntau yog ntxiv rau qhov sib tov qhuav ua ntej sib tov nrog dej, kom ntseeg tau tias muaj kev sib cais tsis sib xws thoob plaws hauv cov plaster sib tov.

HPMC plays lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua haujlwm, kev ua haujlwm, thiab ua haujlwm ntev ntawm plastering plaster, ua rau nws yog ib qho tseem ceeb ntxiv rau hauv plastering daim ntaub ntawv rau ob sab hauv thiab sab nrauv.