Nrog kev txhim kho txuas ntxiv ntawm lub tsev txuag hluav taws xob txuag hluav taws xob, vov tsev, thiab lawv cov kev ua tau zoo cuam tshuam rau cov khoom siv thermal siv tau thiab kev nplij siab ntawm lub tsev. Nyob rau hauv xyoo tsis ntev los no, nrog kev txhim kho cov cua sov tshuab, cov kws tshawb nrhiav thiab cov chaw tsim khoom tau txuas ntxiv tshawb cov khoom thermal tshiab thiab lawv cov qauv hloov kho. Ntawm lawv, HydroxyPropyf methylcellose (HPMC, HydroxyPropylulose didonulcellulose, ua yeeb yaj kiab dej-solub, tuab, dej tuav thiab cov dej nplaum. , tshwj xeeb tshaj yog nyob rau hauv phab ntsa sab nrauv phab ntsa rwb thaiv tsev rwb thaiv tsev tshuab, cov qhuav mortarars, cov khaub noom thiab lwm thaj teb.
1.Basic cov yam ntxwv ntawm HPMC
HPMC yog lub cellulose ether tau los ntawm kev hloov tshuaj lom neeg ntawm ntuj cog cellulose. Nws cov yam ntxwv tseem ceeb muaj:
Dej solubility: HPMC tuaj yeem tsim cov khoom siv colloidal hauv dej nrog dej zoo thiab kev tawg.
Thickening: nws muaj cov nyhuv tuab tuab thiab tuaj yeem ua kom muaj kev ua kom viscosity ntawm cov dej ntau.
Cov khoom siv ua yeeb yaj kiab: HPMC tuaj yeem tsim cov yeeb yaj kiab nyias nyias nyob rau saum npoo ntawm substrate los nce cov khoom siv hluav taws xob ntawm cov khoom siv rwb thaiv tsev.
Dej khaws cia: Nws muaj cov dej ruaj khov, uas tuaj yeem tiv thaiv kev ua haujlwm ntxov ntawm cov dej evapination thiab txuas lub sijhawm tsim kho ntawm cov ntaub ntawv rwb thaiv tsev.
Kev Kho Tau: Los ntawm hloov cov qauv molecular ntawm HPMC, nws solubility ntawm HPMC, cov solubility, viscosity thiab lwm yam khoom tuaj yeem hloov kho kom tau raws li cov ntaub ntawv rwb thaiv tsev.
Cov yam ntxwv tshwj xeeb muab HPMC dav inarements rau cov ntawv thov hauv thermal rwb thaiv tsev cov khoom.
2.Qhov ntawm HPMC hauv Thermal rwb thaiv tsev cov ntaub ntawv
Txhim kho kev sib koom tes thiab adhesion
Hauv phab ntsa sab nrauv phab ntsa rwb thaiv tsev tshuab, HPMC ua phau ntawv tuaj yeem txhim kho cov khoom siv rwb thaiv tsev thiab phab ntsa. Cov nplaum ntawm cov ntaub ntawv rwb thaiv tsev ib txwm muaj xws li polystyrene ua npuas board (eps) thiab extruded polystyrene board (xws li cov av noo ib txwm muaj, xws li cov av noo thiab cua sov. Los ntawm kev txhim kho cov nplaum ntawm cug lossis cov nplaum, hpmc tuaj yeem ua cov txheej txheem ntawm cov txheej txheem rwb thaiv tsev, thiab txhim kho qhov ruaj ntseg ntawm lub tsev.
Txhim kho cov kev tsim muaj
Kev tsim kho kev ua haujlwm ntawm rwb thaiv tsev cov ntaub ntawv yog hais ncaj qha rau kev tsim kho thiab cuam tshuam. HPMC tuaj yeem txhim kho kev ua haujlwm ntawm cov ntaub ntawv rwb thaiv tsev, muab cov kev tiv thaiv kom tsim nyog thaum tsim kho kom ua tiav kev tsim kho kom haum. Piv txwv li, ntxiv HPMC kom cov tshuaj khib ua kom qhuav tuaj yeem txhim kho lub zog ntawm lub tshuab ua kom qhuav, ua kom cov tshuaj khib nyiab kom qhuav thaum lub sijhawm kev tsim kho thiab txhim kho kev tsim kho.
Txhim kho rwb thaiv tsev rwb thaiv tsev
HPMC muaj dej zoo heev, uas tuaj yeem ncua cov khoom evaporation, li kev txhim kho lub zog ua kom ntev dua nrog cov substrate thiab zam kom ziab thiab tawg. Cov cuab yeej no yog qhov tshwj xeeb tshaj yog huab cua huab cua huab cua txias, raws li nws ua kom muaj kuab tshuaj yuav tsim tau nws cov txheej txheem ua kom tawv thaum kub.
Waterproof thiab anti-laus
Sij hawm dhau los, rwb thaiv tsev tuaj yeem raug cov dej noo thiab UV duab, ua rau muaj kev ua phem. HPMC muaj qee yam dej nyab thiab tiv thaiv kev laus thiab tuaj yeem txhim kho huab cua tsis kam thiab UV tiv thaiv cov ntaub ntawv rwb thaiv tsev. Los ntawm kev ntxiv tus nqi ntawm HPMC, cov dej tsis kam ntawm cov ntaub ntawv rwb thaiv tsev tuaj yeem muaj peev xwm nce ntxiv, thiab ua kom muaj kev tswj hwm tau cov pa thermal zoo heev.
Txhim kho thermal ruaj khov
Cov qauv molecular ntawm HPMC muaj cov pab pawg hydroxypropyl thiab methyl pawg, uas muab nws zoo thermal stability. Nyob rau hauv cov kev kub-ib puag ncig muaj peev xwm tswj tau ib yam kev ruaj khov ruaj khov thiab tsis yooj yim decomposed, zam kev hloov pauv tsis zoo hauv kev ua haujlwm ntawm cov ntaub ntawv rwb thaiv tsev los ntawm kev kub siab. Yog li ntawd, hauv qee cov ntaub ntawv cua sov siv hauv cov dej kub siab, kev ntxiv ntawm HPMC muaj kev ruaj ntseg ntawm kev ua haujlwm thermal.
3.Qhov qauv ntawm HPMC hauv cov khoom siv hluav taws xob sib txawv
Rwb Thaiv Sab Nrauv Ntsa Rwb Thaiv Tsev
Hauv phab ntsa sab nrauv phab ntsa rwb thaiv tsev tshuab, HPMC feem ntau yog siv ua ke nrog lwm cov kev sib ntxiv (xws li MAAs, Gypsum, thiab lwm yam). Nws lub ntsiab muaj nuj nqi yog txhawm rau nce cohesion thiab fluasing ntawm phab ntsa, thiab txo cov teeb meem ntawm sab nrauv ntawm phab ntsa, thiab kev sib tsoo los ntawm qhov kub thiab txias hloov thiab cua thiab nag yaig.
Sab nrauv phab ntsa Rwb Thaiv Thaiv Txheej
HPMC tseem dav siv nyob rau sab nrauv phab ntsa rwb thaiv cov txheej txheej. Sab nrauv phab ntsa rwb thaiv tsev cov txheej tsho yuav tsum muaj admin zoo thiab cov yeeb yaj kiab zoo-ua yeeb yam. HPMC tuaj yeem txhim kho cov kev sib txuam, cov dej nplaum thiab cov dej tsis kam ntawm cov txheej, ua kom lub sijhawm ntev ruaj khov ntawm cov ib puag ncig.
qhuav cug
Qhuav cug yog ib qho khoom rwb thaiv tsev rwb thaiv tsev. Los ntawm kev ntxiv HPMC, nws tsis tuaj yeem txhim kho kev tshuaj khib nyiab ntawm cov dej paug, thiab txhim kho kev ua haujlwm ntawm lub tshuaj khib. Tshwj xeeb tshaj yog nyob rau hauv tsawg ib puag ncig ib puag ncig, dej ceev ceev ntawm HPMC tuaj yeem ua kom cov tshuaj khib tau zoo.
Daim ntawv thov ntawm HPMC hauv cov ntaub ntawv rwb thaiv tsev thermal muaj qhov ua tau zoo txhim kho. Los ntawm kev txhim kho adhesion, txhim kho kev ua haujlwm, txhim kho kev ua haujlwm ntawm cov khoom siv rwb thaiv tsev, txuas ntxiv ntawm lawv lub neej pabcuam, thiab txhim kho lub tsev txuag hluav taws xob. Raws li kev tsim kho cov kev tsim kho thiab kev txuag ib puag ncig txuas ntxiv, HPMC muaj cov ntaub ntawv thov tawm hauv thermal thiab yog tsim nyog tshawb fawb thiab kev loj hlob.
Lub sijhawm Post: Feb-15-2025