Hydroxypropyl methylcellulose yog siv ntau npaum li cas vim huab cua

Cov yam ntxwv xws li huab cua kub, kub thiab cua siab yuav cuam tshuam rau volatilization tus nqi ntawm noo noo nyob rau hauv cement mortar thiab gypsum-based khoom. Yog li ntawd, nyob rau lub caij sib txawv, cov dej khaws cia ntawm tib tus nqi ntawm HPMC txawv.

Hauv kev tsim kho tshwj xeeb, cov dej tuav cov nyhuv ntawm cov slurry tuaj yeem hloov kho los ntawm kev nce lossis txo tus nqi ntawm HPMC ntxiv. Kev tuav dej ntawm hydroxypropyl methyl cellulose ether nyob rau hauv qhov kub thiab txias yog ib qho tseem ceeb qhia kom paub qhov zoo ntawm hydroxypropyl methyl cellulose ether. HPMC series cov khoom lag luam zoo tuaj yeem daws qhov teeb meem ntawm cov dej tuav ntawm qhov kub thiab txias.
Nyob rau hauv lub caij kub kub, tshwj xeeb tshaj yog nyob rau hauv kub thiab qhuav thiab nyias-txheej tsim nyob rau hauv tshav ntuj sab, high-zoo HPMC yuav tsum tau los txhim kho cov dej tuav ntawm slurry. High-zoo HPMC muaj zoo heev uniformity. Nws cov methoxy thiab hydroxypropoxy pawg yog sib npaug sib npaug ntawm cov cellulose molecular saw, uas tuaj yeem txhim kho lub peev xwm ntawm oxygen atoms ntawm hydroxyl thiab ether bonds los koom nrog cov dej los tsim hydrogen bonds, kom cov dej dawb ua cov dej khi, yog li tswj tau zoo. cov evaporation ntawm cov dej tshwm sim los ntawm huab cua kub, thiab ua tiav cov dej khaws cia siab.
High-zoo cellulose HPMC tuaj yeem ua tau zoo sib xws thiab muaj txiaj ntsig zoo hauv cov cement mortar thiab gypsum-based khoom, thiab qhwv tag nrho cov khoom siv, thiab tsim cov yeeb yaj kiab ntub dej. Cov dej hauv lub hauv paus yog maj mam tso tawm rau lub sijhawm ntev. Cov khoom siv condensed undergoes hydration cov tshuaj tiv thaiv kom ntseeg tau lub zog sib txuas thiab compressive lub zog ntawm cov khoom. Yog li ntawd, nyob rau hauv high-temperature lub caij ntuj sov kev tsim kho, thiaj li yuav ua kom tiav cov nyhuv ntawm dej tuav, high-quality HPMC cov khoom yuav tsum tau ntxiv nyob rau hauv kom muaj nuj nqis raws li cov mis nyuj, txwv tsis pub, tsis txaus hydration, txo lub zog, tawg, hollowing thiab ntog tawm. los ntawm kev ziab ntau dhau yuav tshwm sim. Nws kuj ua rau muaj kev nyuaj ntawm kev tsim kho rau cov neeg ua haujlwm. Raws li qhov kub thiab txias, qhov nyiaj ntawm HPMC ntxiv tuaj yeem txo qis, thiab tib cov dej tuav tau tuaj yeem ua tiav.