HydroxyPropyyl methylcellueculose (HPMC), raws li ib qho kev siv xov tooj ntawm tes ether, tseem muaj siv hauv cov ntaub ntawv hauv tsev, tshwj xeeb tshaj yog nyob rau hauv gypsum-raws cov khoom siv plaster thiab gypsum thiab gypsum. HPMC muaj cov dej ua kom zoo, ua kom huv, ua kom muaj dej ua ke thiab ua yeeb yaj kiab ua yeeb yam, thiab yog li ntawd lub luag haujlwm tseem ceeb hauv kev tsim khoom thiab kev siv ntawm gypsum.
Cov Khoom Yooj Yim ntawm Hydroxypropyf Methylcellulose (HPMC)
HPMC yog cov neeg tsis muaj iona ether, muaj npe tom qab kev qhia txog cov pab pawg me me ntawm cov cellulose molecule. Nws cov khoom tseem muaj:
Solubility: HPMC tuaj yeem yaj sai nyob rau hauv dej txias kom tsim lub pob tshab lossis me ntsis turbid colloidal tov.
Thickening: HPMC muaj cov nyhuv zoo heev thiab tuaj yeem nce viscosity ntawm kev daws teeb meem.
Dej khaws cia: HPMC tuaj yeem nyob noo tau ntev ntev thaum dej yaj, tiv thaiv dej los ntawm kev poob sai heev.
Zaj duab xis-tsim: HPMC tuaj yeem tsim qhov hloov tau thiab pob tshab zaj duab xis tom qab ziab.
Cov yam ntxwv no ua HPMC ib qho tseem ceeb ntxiv hauv Gypsum-raws cov plaster thiab gypsum.
Daim ntawv thov HPMC hauv Gypsum-raws plaster
Gypsum-based plaster yog ib feem ntau siv sab hauv phab ntsa hauv cov vaj tsev niaj hnub, tsuas yog muaj los ntawm kev sib xyaw ua ke gypsum, agregates thiab ntau yam ntxiv. Daim ntawv thov ntawm HPMC hauv Gypsum-based plaster yog feem ntau tau cuam tshuam hauv cov hauv qab no:
Thickening nyhuv: HPMC tuaj yeem nce cov viscosity ntawm gypsum-raws li cov plaster, ua kom cov plaster ntau thaum kev tsim kho thiab tiv thaiv sagging thiab sag.
Dej retention nyhuv: Vim tias cov dej ua tau zoo ntawm HPMC, ua kom cov txheej txheem ua kom txaus ntseeg tuaj yeem ua kom muaj zog thiab ua kom muaj zog thiab ua kom muaj zog dua tom qab tawv.
Txhim kho kev tsim kho tshiab: HPMC tuaj yeem txhim kho lubricity thiab fluac-raws kis thiab du rau kev tsim kho thiab txhim kho kev tsim kho.
Tawg kuj: los ntawm kev nce ntxiv ntawm cov plaster, HPMC tuaj yeem txo cov kev tawg los ntawm shrinkage thiab nce cov kev pabcuam lub neej ntawm cov khoom hniav zoo nkauj.
Daim ntawv thov HPMC hauv Gypsum khoom
Ntxiv rau nws daim ntawv thov hauv Gypsum-raws li plaster, HPMC tseem dav siv nyob rau hauv ntau hom gypsum, thiab lwm yam ntawm HPMC tseem tuaj yeem nqa cov txiaj ntsig ntau:
Kev hloov kho thiab tuab: Ntxiv HPMC mus rau Gypsum Slurry tuaj yeem txhim kho nws cov kab viscosity tuaj yeem txhim kho nws cov khoom tawg thiab qhov tsis xws luag, thiab txhim kho qhov chaw zoo ntawm cov khoom tiav.
Txhim kho kev nruj thiab lub zog: Tus qauv ua yeeb yaj kiab tsim tau los ntawm HPRSUM cov khoom lag luam thiab txo kev puas tsuaj thaum lub sijhawm thauj mus los thiab kev teeb tsa.
Txhim kho cov dej cia: HPMC tuaj yeem tswj lub xeev noo ntev ntev ntawm cov txheej txheem ua kom qhuav, zam kev tawg thiab deformation tshwm sim los ntawm kev ziab khaub ncaws dhau ntawd.
Kev sib xyaw MOULDING: HPMC tuaj yeem ua rau tus gypsum slurryy freat thiab ntseeg tau qhov tseeb thiab paub tseeb ntawm cov khoom.
Daim ntawv thov ntawm hydroxypropylencellulose (HPMC) hauv Gypsum-raws cov plaster thiab gypsum thiab gypsum muaj cov txiaj ntsig tseem ceeb. Los ntawm kev txhim kho cov thickening, dej ceev, zaj duab xis-sib sau thiab lwm yam khoom, tab sis kuj txuas ntxiv kev pabcuam lub neej ntawm gypsum cov khoom lag luam. Nyob rau hauv yav tom ntej kev tshawb fawb thiab kev txhim kho thiab kev thov ntawm cov ntaub ntawv tsim tsev, yuav ua tiav nws lub luag haujlwm tseem ceeb ntxiv rau kev tsim kho kev tsim kho kev tsim kho.
Lub Sijhawm Post: Feb-17-2025