HydroxyPropyyl methylcellose (HPMC) yog kev ua tau zoo ntxiv rau hauv tsev, tshwj xeeb tshaj yog nyob rau hauv kev tsim ntawm mortars thiab plasters. HPMC yog cov nonionic, dej-soluble cellulose eter ua los ntawm cov tshuaj hloov kho cov cellulose ntuj. Nws muaj cov dej ua kom zoo heev, cov dej ua kom huv, lubricating thiab ua yeeb yam-ua yeeb yam hauv kev txhim kho lub luag haujlwm, cov khoom siv mechanicies thiab cov plasters.
1. Txhim kho cov dej ua haujlwm
Ib qho ntawm cov txiaj ntsig tshaj plaws ntawm HPMC yog nws cov khoom siv dej zoo heev. Hauv cov neeg muaj txhab thiab Plasters, HPMC txo qis tus nqi ntawm cov dej uas qhib ntawm lub neej tuag thiab plasters. Cov cuab yeej no yog ib qho tseem ceeb heev rau kev tsim kho vim tias muaj sijhawm mortars thiab plasters muaj cov sij hawm ua haujlwm txaus thaum tso qoob loo txaus thiab ua kom qhuav los ntawm kev ziab ntxov. Ib qho ntxiv, cov dej khaws cia ua kom cov dej haus ntawm cov cement, yog li nce lub zog kawg ntawm cov neeg nplua nuj thiab plaster.
2. Kev txhim kho ntawm kev tsim kho kev ua haujlwm
HPMC tseem ceeb dua txog kev ua haujlwm ntawm mortars thiab plasters. Vim tias nws cov nyhuv tuab, HPMC tuaj yeem txhim kho cov viscosity ntawm cug, ua kom nws yooj yim rau kev thov thiab thov. Qhov no yog qhov tshwj xeeb tshaj yog rau kev tsim kho phab ntsa thiab zoo li HPMC ua neeg nplua nuj, ua pob thiab cov plasters ntxiv mus rau sagging, txo txoj kev pheej hmoo ntawm sagging. Tsis tas li ntawd, lubrication nyhuv ntawm HPMC tuaj yeem txhim kho cov fluidity ntawm kev tshuaj khib thiab faib nws tusyees txhim kho kev tsim kho kev ua haujlwm zoo thiab qhov zoo.
3. Nce adhesion
HPMC txhim kho cov nplaum thiab plasters, tshwj xeeb tshaj yog nyob rau hauv inorganic substrates xws li cib, pob zeb ua thiab pob zeb. HPMC txhim kho lub zog ntawm cov khoom siv Maas-based los ntawm kev txhim kho cov dej sib xyaws ntawm lub peev txheej ntawm kev tswj cov tshuaj tiv thaiv kev noj haus ntawm cov cement. Nyob rau tib lub sijhawm, zaj duab xis tsim los ntawm HPMC kuj tseem tuaj yeem nce kev sib txuas lus ntawm lub tshuaj khib thiab cov khoom siv hluav taws xob, tiv thaiv kab cug, tiv thaiv kev txig los yog tawg.
4. Txhim kho kev tawg
Ntxiv HPMC mus rau Mortars thiab Plasterers tuaj yeem txhim kho lawv cov kev tawg. Vim tias cov dej ua ke zoo heev thiab cov tshuaj khib nyiab ntawm HPMC, tshuaj khib tau nyob ntev ntev, txo shrinkage thiab qhuav shrinkage backing tshwm sim los ntawm kev poob ntau dhau. Tsis tas li ntawd, cov qauv zoo tsim los ntawm HPMC tseem tuaj yeem cuam tshuam cov kev ntxhov siab, yog li txo qhov tshwm sim ntawm cov kab nrib pleb.
5. Txhim kho khov-thaw tsis kam
HPMC kuj txhim kho kom khov-thaws tsis kam nyob hauv cov neeg nplua nuj thiab plasters. Cov khoom siv dej ceev ceev ntawm HPMC pab tau txawm tias kev faib cov dej noo nyob hauv Mortars thiab plasters, txo kev puas tsuaj los ntawm ya raws kev xav tau. Tsis tas li ntawd, cov yeeb yaj kiab tiv thaiv tsim los ntawm HPMC tuaj yeem tiv thaiv cov khoom siv sab nraud, yog li txo kev puas tsuaj rau kev ua neej nyob thiab txuas ntxiv rau lub neej ua haujlwm ntawm lub neej mortars thiab plaster.
6. Txhim kho cov coj tsis kam
HPMC kuj tseem txhim kho cov coj tsis kam ntawm Mortars thiab plasters. Los ntawm kev txhim kho cov kev sib khi ua kom muaj zog thiab cov qauv ntom ntom ntawm lub tshuaj khib, hpmc ua rau cov khoom muaj zog dua, txo cov peev txheej rau hnav thiab tev. Qhov no yog tshwj xeeb yog qhov tshwj xeeb rau cov neeg Mortars thiab sab nrauv phab ntsa plasters, raws li cov chaw no feem ntau yuav muaj kev hnav ntau dua.
7. Txhim kho impermability
HPMC kuj muaj cov nyhuv zoo rau qhov tsis tsim nyog ntawm mortars thiab plasters. Zaj duab xis-tsim cov khoom ntawm HPMC ua ib qho txiaj ntsig waterproof muaj kab cug thiab stucco chaw, txo cov chaw stucco, txo cov dej khov. Nyob rau tib lub sijhawm, HPMC txhim kho cov ceev ntawm cov khoom, txo cov pores sab hauv, yog li txhim kho sab hauv kev ua tau zoo heev. Qhov no yog qhov tshwj xeeb rau kev tsim cov dej tsis muaj dej thiab noo noo-pov thawj.
8. Nce Sijhawm Qhib
Qhib lub sijhawm hais txog lub sijhawm uas cug vaph lossis stucco tseem nyob hauv ib qho kev ua haujlwm. HPMC tuaj yeem txuas lub sijhawm qhib los ntawm nws cov khoom siv dej, uas tseem ceeb heev thaum tsim cov chaw loj lossis ua haujlwm kom qhuav thiab qhuav ib puag ncig. Lub sijhawm siv sijhawm txuas ntxiv tsis tsuas yog nce kev tsim kho kev tsim kho tab sis kuj txo cov kev ua haujlwm los ntawm kev tshuaj khib lossis plaster kom nrawm nrawm nrawm nrawm nrawm nrawm nrawm nrawm.
Kev siv HPMC hauv Mortars thiab cov plasters muab kev txhim kho tseem ceeb hauv cov khoom multifaceted hauv cov ntaub ntawv no. Los ntawm kev nce dej khaws cia, txhim kho kev tsim kho, txhim kho kom khov thiab khov kho kom haum, thiab kev txhim kho kom muaj kev txhim khu kev qha thiab ruaj khov rau cov ntaub ntawv tsev tshiab. Cov kev ua tau zoo no tsis yog ua rau kev tsim kho kom yooj yim dua thiab muaj txiaj ntsig, tab sis kuj tseem ua kom lub tsev ntev detability thiab ruaj khov ntawm lub tsev nyob rau hauv kev sib txawv ib puag ncig. Yog li ntawd, HPMC tau dhau los ua kev sib xyaw thiab cov khoom xyaw tseem ceeb hauv collple thiab stucco formulations.
Lub Sijhawm Post: Sep-03-2024