Kev tuav dej yog ib qho kev ntsuas ntawm HPMC hydroxypropyl methylcellulose rov siv dua, dej tuav kev ua tau zoo thiab qhov tsis zoo kuj raug cuam tshuam los ntawm ntau lub tuam txhab hauv tsev ntawm cov tshuaj khib nyiab qhuav, tshwj xeeb tshaj yog kub huab cua ntawm lub Hoobkas sab qab teb, tib lub sijhawm, muaj ntau yam cuam tshuam rau cov teebmeem. ntawm qhuav hmoov mortar dej, xws li ntxiv ntim, viscosity, particle fineness nrog rau kev siv ntawm ib puag ncig, kub, thiab lwm yam.
Nyob rau hauv cov txheej txheem qhuav-mixed pre-mixed mortar, qhov ntxiv ntawm hydroxypropyl methyl cellulose yog tsawg. Txawm hais tias qhov sib ntxiv yog tsawg, nws tuaj yeem pom tseeb txhim kho kev ua haujlwm ntawm cov khib nyiab ntub dej, uas yog ib qho tseem ceeb ntxiv cuam tshuam rau kev tsim kho ntawm mortar. Yog li, kev tshawb fawb thiab tsim nyog xaiv ntawm cellulose ether nrog ntau hom, txawv viscosity, sib txawv particle fineness thiab ntxiv tus nqi muaj txiaj ntsig zoo rau kev txhim kho ntawm qhuav-sib tov npaj-siv mortar kev ua tau zoo.
Rau lub tsev tam sim no, tam sim no ntau masonry thiab plastering mortar dej kev ua tau zoo tsis zoo tagnrho, ib qho chaw nyob ntsiag to ob peb feeb yuav yog dej slurry sib cais, thiab dej tuav yog hydroxypropyl methylcellulose ether lub luag hauj lwm tseem ceeb, dej-soluble cellulose ether nyob rau hauv lub Npaj-mixed mortar muaj lub luag haujlwm tseem ceeb dua, lub luag haujlwm ntawm qhov chaw tseem ceeb muaj peb, ib qho, Kev ua haujlwm zoo ntawm cov dej tuav, qhov thib ob, kev cuam tshuam ntawm qhov sib xws thiab thixotropy ntawm cov khoom sib xyaw ua ke, thib peb, kev cuam tshuam ntawm cov cement. . Hydroxypropyl methylcellulose dej tuav kev ua tau zoo feem ntau yog nyob ntawm lub hauv paus ntawm kev nqus dej, muaj pes tsawg leeg ntawm mortar, mortar txheej thickness, thiab mortar dej yuav tsum tau, thiab lub sij hawm condensation ntawm cov khoom condensation, rau cellulose ether tus kheej dej tuav, feem ntau yog los ntawm ntuj dissolution thiab lub cev qhuav dej. ntawm celluloseether.
Hydroxypropyl methylcellulose plays lub luag haujlwm tseem ceeb hauv cov txheej txheem ntawm cov khoom sib xyaw qhuav-sib xyaw ua ke, uas tuaj yeem ua lub luag haujlwm hauv dej tuav, thickening, ncua lub zog ntawm cov cement, thiab tuaj yeem txhim kho kev ua haujlwm ntawm kev tsim kho. Cov dej tuav tau zoo tuaj yeem ua rau cov cement hydration ntau dua, tuaj yeem txhim kho cov viscosity ntawm cov khib nyiab ntub dej, txhawm rau txhim kho lub zog sib txuas ntawm mortar, tab sis kuj tuaj yeem kho lub sijhawm. Ntxiv hydroxypropyl methylcellulose ether nyob rau hauv cov txheej txheem ntawm qhuav sib tov npaj-siv mortar tuaj yeem txhim kho kev tsim kho ntawm mortar, tuaj yeem txhim kho lub zog ntawm cov qauv, thiaj li yuav tau siv dav hauv daim ntawv thov mortar.
Post lub sij hawm: Dec-23-2021