HPMC, tseem hu ua hydroxypropyl methylcellulose, yog ib qho tshuaj uas yog los ntawm tsev neeg ntawm cellulose ethers. Nws yog los ntawm cellulose, ib qho polymer ntuj pom muaj nyob rau hauv cov phab ntsa cell ntawm cov nroj tsuag. HPMC yog siv dav hauv kev lag luam kev tsim kho vim nws cov khoom siv ntau yam.
HPMC feem ntau siv ua cov khoom ua kom tuab, cov khoom sib txuas, cov zaj duab xis thiab cov neeg sawv cev khaws dej hauv cov ntaub ntawv tsim kho xws li cov khoom siv cement, cov nplaum pobzeb, cov plasters, plasters thiab grouts. Nws cov qauv tshuaj lom neeg tso cai rau nws nqus dej thiab tsim cov tshuaj zoo li gel uas txhim kho kev ua haujlwm, kev nplaum thiab kev tiv thaiv sag ntawm cov ntaub ntawv tsim kho.
Nov yog qee cov khoom tseem ceeb thiab daim ntawv thov ntawm HPMC hauv kev lag luam kev tsim kho:
Kev khaws dej: HPMC nqus thiab khaws dej, tiv thaiv cov khoom siv cement kom tsis txhob qhuav sai. Qhov no pab txo qhov tawg, txhim kho kev noo thiab txhim kho lub zog thiab kev ruaj khov ntawm cov khoom siv hauv tsev.
Kev ua tau zoo dua: HPMC ua haujlwm ua tus hloov pauv rheology, muab kev ua tau zoo dua thiab yooj yim dua rau kev siv cov ntaub ntawv tsim kho. Nws ua rau kom muaj kev nthuav dav thiab kev tiv thaiv kev poob ntawm cov mortars thiab plasters, ua rau lawv yooj yim dua rau kev tuav thiab siv.
Kev nplaum thiab sib koom ua ke: HPMC txhim kho kev nplaum ntawm cov khoom siv hauv tsev sib txawv. Nws ua rau lub zog sib txuas ntawm cov nplaum pobzeb, plasters thiab plasters nce ntxiv, ua kom ntseeg tau tias muaj kev nplaum zoo dua rau cov khoom siv xws li pob zeb, ntoo thiab vuas.
Kev Tiv Thaiv Kev Ntswg: HPMC txo qhov kev nqes lossis kev tawg ntawm cov khoom ntsug xws li cov nplaum pobzeb lossis cov tshuaj pleev xim thaum lub sijhawm siv. Qhov no pab tswj qhov tuab uas xav tau thiab tiv thaiv kev ntswj lossis ntws.
Kev Tsim Zaj Duab Xis: Thaum HPMC qhuav, nws tsim cov zaj duab xis nyias, yoog tau, thiab pob tshab. Cov zaj duab xis no tuaj yeem tiv taus dej, tiv taus huab cua thiab tiv thaiv qhov chaw rau cov ntaub ntawv siv hauv tsev.
Lub sijhawm tshaj tawm: Lub Rau Hli-06-2023