Ntxiv hydroxypropyl methylcellulose los ua hmoov putty, nws cov viscosity tsis yooj yim kom loj dhau, loj dhau yuav ua rau tsis ua haujlwm tau zoo, yog li ntawd hydroxypropyl methylcellulose rau hmoov putty xav tau viscosity ntau npaum li cas? Cia peb tshuaj xyuas nws rau txhua tus.
Nws yog qhov zoo tshaj plaws los ntxiv hydroxypropyl methylcellulose rau hauv cov hmoov putty nrog viscosity ntawm 10 lossis 75,000, uas tuaj yeem txhim kho kev ua haujlwm ntawm cov hmoov putty, thiab nws cov dej khaws cia kuj zoo heev. Yog tias nws siv rau mortar, nws xav tau viscosity siab dua me ntsis, xws li viscosity 150,000 lossis 200,000. Feem ntau, hydroxypropyl methylcellulose muaj dej khaws cia zoo dua nrog viscosity siab dua.
Kev siv hydroxypropyl methylcellulose ntxiv rau hauv cov hmoov putty yog dab tsi? Lub luag haujlwm tseem ceeb yog dab tsi?
HPMC siv rau hauv cov hmoov putty kom tuab, khaws dej thiab txhim kho kev ua haujlwm ntawm kev tsim kho.
Ua kom tuab: Cellulose tuaj yeem ua kom tuab kom ncua thiab ua kom cov tshuaj sib npaug zoo li qub, thiab tiv taus kev sagging.
Kev khaws dej: ua kom cov hmoov putty qhuav qeeb qeeb, thiab pab cov tshauv calcium kom ua haujlwm raws li dej. Kev tsim kho: Cellulose muaj cov nyhuv lubricating, uas tuaj yeem ua rau cov hmoov putty muaj kev tsim kho zoo.
Hydroxypropyl methylcellulose tsis koom nrog hauv kev tshuaj lom neeg hauv putty, nws tsuas yog ua lub luag haujlwm pabcuam, thiab nws tsis muaj xim thiab tsis muaj tshuaj lom. Nws yog cov khoom siv ntxiv feem ntau hauv cov tsev niaj hnub thiab siv dav hauv putty mortar.
Lub sijhawm tshaj tawm: Plaub Hlis-14-2023