HPMC (hydroxypropyl methylcellulose) yog ib qho tsis muaj tshuaj lom, tsis muaj ntxhiab, tsis yog-ionic cellulose ether compound dav siv hauv ntau yam khoom siv hauv kev tsim kho. Vim nws cov dej zoo heev solubility, stability, thickening thiab film-forming zog, HPMC tuaj yeem txhim kho cov viscosity, ductility thiab lub zog ntawm cov khoom siv hauv tsev, txhim kho kev tsim kho kom zoo. Tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem ntawm sab hauv thiab sab nrauv phab ntsa plastering, HPMC tau dhau los ua ib qho ntawm cov khoom xyaw tseem ceeb los txhim kho kev ua haujlwm ntawm cov ntaub ntawv hauv paus, xws li cov nplais nplaum, cov hmoov putty, qhuav mortar thiab lwm yam khoom.
Lub luag haujlwm ntawm HPMC hauv plastering
Thaum siv cov ntaub ntawv plastering, HPMC feem ntau txhim kho tag nrho cov khoom siv los ntawm peb yam:
Thickener: HPMC tuaj yeem ua kom cov viscosity ntawm cov khoom siv plastering, tiv thaiv cov khoom los ntawm sagging thaum lub sij hawm tsim kho, thiab xyuas kom meej qhov ruaj khov ntawm cov khoom ntawm phab ntsa lossis hauv paus txheej. Lub thickener muaj nuj nqi ua rau nws yooj yim dua rau cov builder los lis cov ntaub ntawv plastering thiab txhim kho nws adhesion zog.
Tus neeg saib xyuas dej: HPMC muaj cov khoom tuav dej zoo, uas tuaj yeem txuas ntxiv lub sijhawm qhib ntawm cov khoom, kom cov khoom yuav tsis poob dej sai heev thaum lub sijhawm tsim kho, pab kom tsis txhob tawg tom qab ziab. Tsis tas li ntawd, kev tuav dej kom raug tuaj yeem ua kom cov cement moist thaum lub sij hawm kho, kom ntseeg tau tias cov cement yog hydrated, ntxiv dag zog thiab adhesion ntawm cov khoom.
Lubricant: HPMC ua rau cov khoom siv plastering smoother thaum thov, txhim kho kev ua haujlwm ntawm cov khoom. Nws cov khoom siv lubricating tuaj yeem txo qhov tsis kam ntawm cov khoom siv thaum lub sijhawm ua ntawv thov, ua rau kev tsim kho ntau dua kev txuag hluav taws xob, thiab tib lub sijhawm ua rau cov ntawv thov nto smoother thiab muag heev.
Kev siv HPMC hauv cov ntaub ntawv sib txawv
Kev siv ntau yam ntawm HPMC suav nrog kev tsim ntau yam khoom siv hauv tsev, xws li cov hmoov putty, bonding mortar thiab pobzeb nplaum. Ntawm cov khoom no, HPMC tuaj yeem tsis tsuas yog txhim kho kev tsim kho ntawm cov ntaub ntawv, tab sis kuj txhim kho huab cua tsis kam, dej tsis kam thiab hnav tsis kam ntawm cov ntaub ntawv.
Putty hmoov: Ntawm cov hmoov putty, HPMC tuaj yeem txhim kho lubricity thiab tawg tsis kam ntawm putty thiab txhim kho nto smoothness tom qab kev tsim kho.
Bonding mortar: Hauv kev sib tsoo mortar, cov dej tuav thiab cov khoom ua kom tuab ntawm HPMC tuaj yeem ua rau cov khoom siv kom muaj kev ua haujlwm zoo hauv qhov sib txawv ntawm qhov kub thiab txias.
Pobzeb nplaum: Ntawm cov pobzeb nplaum, qhov zoo adhesion thiab ductility muab los ntawm HPMC tuaj yeem ua kom muaj kev sib raug zoo ntawm cov pobzeb nplaum tom qab kev tsim kho thiab tsim kom muaj kev sib raug zoo nyob rau hauv cov nplais nplaum txheej.
Cov nyhuv ntawm HPMC rau cov khoom ntawm cov ntaub ntawv plastering
Crack resistance: Kev tawg ntawm cov ntaub ntawv plastering yog ib qho teeb meem tshwm sim hauv kev tsim kho, tshwj xeeb tshaj yog thaum lub hauv paus txheej tsis sib npaug los yog qhov kub thiab txias hloov pauv zoo heev. Cov dej tuav cov nyhuv ntawm HPMC tuaj yeem tiv thaiv kev tawg ntawm cov ntaub ntawv plastering los ntawm kev poob dej sai.
Dej tsis kam: Vim tias HPMC muaj cov dej tsis zoo, cov khoom siv plastering tuaj yeem nyob ruaj khov hauv qhov chaw muaj av noo thiab tsis yooj yim cuam tshuam los ntawm ya raws thiab deformed.
Adhesion: HPMC ua lub luag haujlwm zoo hauv kev txhim kho cov adhesion ntawm cov ntaub ntawv plastering, ua rau cov khoom ntau adhesion rau lub hauv paus txheej, yog li xyuas kom meej tias cov plastering txheej yuav tsis poob yooj yim.
Kev ceev faj rau kev xaiv thiab siv HPMC
Thaum xaiv HPMC, tus qauv thiab ntau npaum li cas ntawm HPMC yuav tsum tau txiav txim siab raws li qhov sib txawv ntawm kev tsim kho, plastering cov qauv thiab cov kev siv tshwj xeeb. Feem ntau, qhov viscosity, dissolution tus nqi thiab dej tuav tus nqi ntawm HPMC yog qhov tseem ceeb uas txiav txim siab nws cov kev ua tau zoo hauv cov ntaub ntawv plastering. Nws yuav tsum raug sau tseg tias qhov sib ntxiv ntawm HPMC yuav tsum tsim nyog. Yog tias siv ntau dhau, qhov ductility ntawm cov khoom thaum lub sij hawm tsim kho yuav txo qis thiab kev tsim kho nyuaj nce ntxiv; Yog tias siv tsawg dhau lawm, qhov thickening thiab dej tuav cov khoom ntawm cov khoom yuav raug cuam tshuam.
Daim ntawv thov piv txwv ntawm HPMC
HPMC-ntxiv cov ntaub ntawv plastering yog siv nyob rau hauv ntau qhov kev tsim kho loj. Piv txwv li, plastering rau sab nrauv phab ntsa ntawm cov tsev siab siab yuav tsum tau cov ntaub ntawv uas muaj kev sib tsoo siab thiab dej tsis kam. Hauv qhov no, cov tshuaj khib nyiab qhuav ntxiv nrog HPMC tuaj yeem siv los txhim kho qhov adhesion thiab tawg tsis kam ntawm plaster txheej. Ib yam li ntawd, thaum lub sij hawm plastering txheej txheem ntawm cov phab ntsa sab hauv, HPMC kuj tseem tuaj yeem txhim kho qhov smoothness thiab workability ntawm cov khoom, muab lub hauv paus zoo rau kev kho kom zoo nkauj thiab tha xim.
Raws li kev tsim kho tseem ceeb ntxiv, HPMC plays lub luag haujlwm tseem ceeb hauv kev tsim cov ntaub ntawv plastering thiab cov khoom tiav. Los ntawm ntau lub zog xws li thickening, dej tuav thiab lubrication, HPMC tuaj yeem txhim kho kev ua tau zoo ntawm cov ntaub ntawv plastering, txo cov teeb meem kev tsim kho thiab cov nqi, thiab txuas ntxiv lub neej kev pabcuam ntawm cov khoom siv hauv tsev. Xaiv cov qauv HPMC uas tsim nyog thiab siv nws qhov kev xav tau zoo tuaj yeem txhim kho cov txiaj ntsig thiab kev tsim kho zoo, ua kom plastering siv tau zoo dua thiab ruaj khov, thiab muab lub hauv paus ruaj khov rau kev tsim kho.
Post lub sij hawm: Nov-02-2024