Hydroxypropyl methylcellulose (HPMC) yog cov khoom siv tseem ceeb hauv cov tshuaj khib nyiab qhuav thiab ua lub luag haujlwm tseem ceeb hauv kev txhim kho ntau yam khoom ntawm mortar. Qhuav mix mortar yog ib qho kev sib xyaw ua ntej sib xyaw ntawm cov khoom sib xyaw zoo, cov cement thiab cov khoom ntxiv uas tsuas yog yuav tsum tau ntxiv nrog dej ntawm qhov chaw tsim kho. Nyob rau hauv cov ntaub ntawv no, HPMC ua raws li ib tug multifunctional additive uas pab txhim kho kev ua tau zoo thiab functionality ntawm lub mortar.
Chemical structure thiab properties:
HPMC yog ib tug semi-synthetic polymer muab los ntawm cellulose, ib tug natural polymer pom nyob rau hauv cov nroj tsuag cell phab ntsa. Los ntawm kev hloov kho tshuaj, hydroxypropyl thiab methyl pawg tau nkag mus rau hauv cov pob txha cellulose los tsim HPMC. Qhov kev hloov kho no muab HPMC cov khoom tshwj xeeb, ua rau nws soluble hauv dej thiab muab nws thickening, nplaum, thiab muaj peev xwm ua yeeb yaj kiab.
Muaj nuj nqi ntawm qhuav mix mortar:
Kev tuav dej:
HPMC txhim kho cov dej tuav ntawm cov khoom sib tov qhuav, tiv thaiv cov dej nrawm nrawm thiab ua kom muaj dej kom zoo ntawm cov cement. Qhov no yog qhov tseem ceeb rau txoj kev loj hlob ntawm lub zog thiab durability ntawm mortar.
Thickening:
Vim nws cov khoom thickening, HPMC nce qhov sib xws thiab kev ua haujlwm ntawm cov mortar, ua kom yooj yim rau kev thov thiab muaj kev ua tau zoo dua thaum tsim kho.
Txhim kho adhesion:
HPMC ua raws li ib tug binder los txhawb kom zoo adhesion ntawm mortar rau ntau yam substrates. Qhov no yog qhov tseem ceeb rau kev sib raug zoo ntawm cov mortar rau saum npoo uas nws siv rau.
Txo sagging:
Ntxiv HPMC pab txo qis sagging los yog slumping ntawm lub mortar, tshwj xeeb tshaj yog nyob rau hauv daim ntawv thov ntsug. Qhov no pab txhawb rau stability thiab uniformity ntawm cov ntaub ntawv mortar.
Teem sijhawm tswj:
HPMC cuam tshuam rau lub sijhawm teeb tsa ntawm lub mortar. Los ntawm kev ua tib zoo kho ntau npaum, teem sij hawm tuaj yeem tswj tau kom tau raws li qhov project tshwj xeeb.
Txhim kho yooj:
Lub xub ntiag ntawm HPMC pab ua kom yooj yim ntawm cov mortar thiab txo qhov kev pheej hmoo ntawm kev tawg. Qhov no yog qhov tshwj xeeb tshaj yog qhov uas lub substrate yuav txav me ntsis.
Enhanced processability:
Kev tsim kho kev ua tau zoo yog qhov tseem ceeb ntawm cov khoom siv hauv tsev. HPMC txhim kho kev ua haujlwm tag nrho ntawm cov khoom sib xyaw qhuav, ua kom yooj yim rau kev lis thiab siv.
Resistant sagging thiab collapse:
HPMC muab cov tshuaj thixotropy, uas txhais tau hais tias thaum nplawm los yog siv lub zog, nws cov viscosity txo qis, ua kom yooj yim rau kev sib kis, thiab rov qab mus rau lub xeev khov dua thaum so, tiv thaiv sagging lossis tsoo.
Kev siv thaj chaw:
HPMC yog dav siv nyob rau hauv ntau yam qhuav mix mortar daim ntaub ntawv xws li:
Cov nplaum nplaum
Rendering thiab plaster
self-leveling compound
Caulk
masonry mortar
EIFS ( Sab nrauv phab ntsa rwb thaiv tsev thiab Finishing System)
Hydroxypropyl methylcellulose yog ntau yam thiab indispensable additive nyob rau hauv qhuav mix mortar formulations. Nws cov khoom tshwj xeeb pab txhim kho cov dej tuav, kev ua haujlwm, adhesion thiab tag nrho kev ua haujlwm ntawm cov mortar. Raws li kev tsim kho txuas ntxiv mus, lub luag haujlwm ntawm HPMC hauv kev txhim kho qhov zoo thiab kev ua haujlwm ntawm kev siv tshuaj khib nyiab qhuav yog qhov tseem ceeb.
Post lub sij hawm: Jan-25-2024