HydroxyPropyyl methylcellose (HPMC) ua lub luag haujlwm tseem ceeb hauv kev sib xyaw qhuav-muab cov tshuaj sib xyaw. Kev sib xyaw qhuav-muab cov khoom sib xyaw ua ke yog cov khoom siv qhuav qhuav ua los ntawm kev sib xyaw ua ke, xis mas fillers thiab ntau yam ntxiv nyob rau hauv qee feem. Nws tuaj yeem siv tau ntawm lub chaw tsim khoom los ntawm kev ntxiv cov dej thiab nplawm. Raws li ib tug zoo kawg nkaus cellulose cellulose cellulose cellulose cellulose cellulose, HPMC ua si ntau lub zog hauv kev sib xyaw qhuav-sib xyaw ua ke, yog qhov kev ua tau zoo ntawm cov neeg muaj tshoob.
1. Dej khaws cia
Lub luag haujlwm tseem ceeb ntawm HPMC yog txhawm rau txhim kho cov dej ceev ntawm cug. Vim tias cellulose molecules muaj ntau cov pab pawg hydroxyl thiab methoxy pab pawg, yog li txhim kho dej retention muaj peev xwm ntawm lub tshuaj khib. Cov dej zoo ua kom cov dej khov nyob hauv lub voj voog ua kom ntev dua, txhim kho kev ua haujlwm nrawm, txo cov kab nrib ntawm lub cug. Tshwj xeeb tshaj yog nyob rau hauv kev tsim kho cov kev kub-kub los yog dej-nqus dej, cov dej khaws cia hauv HPMC yog qhov pom tseeb.
2. Txhim kho kev tsim kho kev tsim kho
HPMC muab tshuaj cug cov khoom siv zoo heev. Ua ntej, nws txhim kho lub zog ntawm lub tshuaj khib, ua rau cov tshuaj khib nyiab sib xyaw ntau dua thiab zoo. Thib ob, HPMC txhim kho lub volptopy ntawm cug, uas yog, lub tshuaj khib tau ua kom muaj qee yam sib xws thaum nyob ruaj ruaj, tab sis ntws tau yooj yim hauv kev ntxhov siab. Cov xeeb ceem no ua cho tshuaj tau ua haujlwm zoo thiab lub sijhawm thaum lub sijhawm tsim kho, thiab yog ib qho yooj yim los thov thiab du. Tsis tas li ntawd, HPMC tuaj yeem txo cov nplaum ntawm cug cug thaum kev tsim kho, tsim cov cuab yeej siv tau yooj yim dua.
3. Los ntawm cov khoom ntiag tug
Thaum kev tsim kho ntawm qhov chaw ntsug, tshuaj khib nyhav rau sag vim kev sib tsoo, cuam tshuam rau cov khoom tsim tau zoo. HPMC tuaj yeem txhim kho cov khoom cug, tso cai rau cov kab cug ua kom zoo dua rau cov ntu tom ntej tom qab kev tsim kho thiab zam kev sagging. Qhov no yog qhov tshwj xeeb tshaj yog rau cov khoom siv xws li pobzeb adhesives thiab plaster mortars uas yuav tsum tau siv rau cov chaw ntsug.
4. Txhim khu Version Clearity
HPMC tuaj yeem txhim kho cov c tov meej khaws cia ntawm cug, ua rau nws tsis tshua yuav ua kom tawg thiab tawg thaum lub sij hawm kho tus txheej txheem. Nws cov tshuab yog feem ntau kom nce cov ntsiab lus noo noo nyob rau hauv kev txhim kho microstructure ntawm cov tshuaj khib, yog li txo cov dej evap. Tsis tas li ntawd, HPMC tseem tuaj yeem tsim cov qauv network hauv lub zog network thiab zom cov kab tsuag, thiab txo cov kab nrib pleb ntawm lub cug cug thaum lub sij hawm tawv.
5. Txhim kho lub zog bonding
HPMC tuaj yeem txhim kho txoj hlua khi ntawm lub zog cug. Qhov no yog feem ntau vim yog cov pab pawg polar muaj nyob hauv nws cov qauv molecules, uas tuaj yeem tsim lub cev nrog cov kab ntawm lub substrate thiab txhim kho txoj kev sib tsoo ntawm lub cug cug thiab lub substrate. Nyob rau tib lub sijhawm, cov dej khaws cia los ntawm HPMC kuj tseem pab txhawb cov khoom noj kom tiav, yog li txhim kho kom muaj zog ntawm lub tshuaj khib.
6. Kho tshuaj tua kab sib xws
HPMC kuj tseem tuaj yeem hloov kho lub colute kom cov tshuaj khib ua kom zoo thiab ua haujlwm tom qab ntxiv dej. HPMC nrog cov vencosities txawv tuaj yeem siv tau ntau hom kev nplua nuj. Xaiv cov khoom tsim nyog raws li kev xav tau tiag tiag tuaj yeem ua rau lub tshuaj tshuaj yeem yooj yim dua los tswj thiab siv thaum kev tsim kho.
7. Txhim Kho Tshuaj Khov Ruaj Ntseg
HPMC tuaj yeem txhim kho qhov ruaj khov ntawm cug thiab txo kev sib cais ntawm kev muab tshuaj khib thaum sib xyaw. Vim tias nws cov nyhuv tuab tuab, nws tuaj yeem tswj cov khoom siv hauv lub tshuaj khib, ua kom tsis txhob muaj kev sib haum xeeb thiab ua kom lub tshuaj khib hauv lub xeev kev tsim kho.
8. Huab cua Kuj
Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho cov huab cua tsis kam ntawm cov tshuaj khib, tshwj xeeb yog huab cua huab cua tsis zoo. Nws tuaj yeem txo cov thermal kev ntxhov siab los ntawm qhov kub hloov pauv ntawm lub tshuaj khib, yog li txhim kho lub neej durability thiab kev pabcuam lub neej ntawm lub tshuaj khib.
Raws li ib qho tseem ceeb ntxiv, hydroxypropyl methylcellose tau txhim kho cov khoom sib xyaw kom qhuav, kev tsim kho kev ua tiav, sag tsis kam, txhim kho lub zog ua kom muaj zog thiab ua kom muaj zog. Qhov zoo thiab kev tsim kho ntawm cug cug. Nws daim ntawv thov tsis tuaj yeem txhim kho lub cev cug, tab sis kuj txhim kho kev ua haujlwm zoo thiab txo qis siv siv hauv kev tsim kho.
Lub Sijhawm Post: Jul-04-2024