HydroxyPropyyl Metylcellulose (HPMC) yog cov polymer ntau yam siv rau cov khoom tsim kho, tshwj xeeb hauv lub tshuab-blasted cug. Nws cov khoom tshwj xeeb txhim kho kev ua tau zoo thiab kev ua haujlwm ntawm cov neeg nplua nuj, ua rau nws invaluable hauv ntau yam kev siv.
Tshuaj lom neeg cov khoom lag luam thiab cov txiaj ntsig zoo ntawm HPMC
HPMC yog cov tsis-ionic cellulose ionet derived los ntawm ntuj cellulose los ntawm cov tshuaj lom neeg. Nws ua kom pom muaj ntau yam khoom muaj txiaj ntsig zoo, suav nrog:
Dej khaws cia: HPMC tuaj yeem khaws cov dej muaj txiaj ntsig, uas yog qhov tseem ceeb hauv kev nplua nuj los tiv thaiv kev ua kom muaj kev ua kom muaj cov khoom siv xis.
Rheology hloov kho: nws ua raws li tus neeg sawv cev tuab, txhim kho lub viscosity thiab sib xws ntawm cug sib xyaw.
Adhesion: HPMC txhim kho cov khoom nplaum ntawm cug, pab hauv cov ntawv thov ntawm cov chaw ntsug thiab ua haujlwm.
Kev ua haujlwm: cov polymer txhim kho qhov yooj yim ntawm kev thov thiab kev sib cais ntawm collple.
Sag tiv thaiv: Nws muab cov khoom zoo tshaj plaws, tiv thaiv kev tshuaj khib los ntawm kev ua kom swb lossis sagging thaum lub ntaub ntawv thov.
Cua Entrainment: HPMC tuaj yeem nkag rau hauv cov tshuaj khib nyiab hauv cov tshuaj khib, txhim kho nws cov khov kho thiab txo qis ntom ntom ntom ntom.
Daim ntaub ntawv siv hauv lub tshuab-blasted cug
Tshuab-blasted cug, siv ntau yam rau rendering thiab plastering loj loj thaj chaw, tau txais txiaj ntsig los ntawm kev suav nrog HPMC. Ntawm no yog thawj daim ntawv thov:
1. Txha tsuag plaster thiab muab
HPMC txhim kho cov kev ua yeeb yam ntawm cov plasters tsuag thiab renders, uas tau thov siv tshuaj txau cov tshuaj txau ntawm cov chaw loj. Nws cov luag hauj lwm tseem ceeb xws li:
Txhim kho cov twj tsis muaj zog: HPMC ua kom lub tshuaj khib nyiab tuaj yeem nqus tau los ntawm cov tshuab tshuaj txau tsis muaj txhaws lossis hnav ntau dhau ntawm cov khoom siv.
Daim Ntawv Thov Muab Kev Sau Npe: Nws pab ua tiav lub tsho tiv no niaj hnub, tseem ceeb rau kev ua kom zoo nkauj thiab kev tiv thaiv.
Txo cov nyiaj tsis zoo: los ntawm kev txhim kho adhesion thiab txo qis rov qab, hpmc kom cov khoom siv ntau dua ntawm phab ntsa, txo cov khib nyiab.
2. Kev ua tus kheej sib txuas
Hauv kev coj tus kheej lub cev, uas tau tsim los ntws tawm thiab sib tw rau hauv ib lub tiaj, du nto yam tsis muaj qhov xav tau lub luag haujlwm tseem ceeb los ntawm:
Kev txhim kho Fellity: nws hloov kho cov rheology, kom meej lub tshuaj khib ntws kom zoo thiab ua qhov khoob thiab kev ntxhov siab.
Tswj Lub Sijhawm: HPMC pab hauv kev tswj lub sijhawm teem sijhawm, muab lub sijhawm ua haujlwm tsim nyog thaum ua kom muaj zog ua haujlwm.
Kev tiv thaiv kev cais tawm: nws ua kom cov cheebtsam ntawm cov sib tov nyob sib cais ua ke, tiv thaiv kev sib cais ua ke.
3. Cov nplaum tsis zoo
HPMC yog siv nyob rau hauv cov nplaum mortars rau vuas thiab rwb thaiv tsev cov laug cam, muab:
Txhim kho adhesion: nws tseem ceeb ua kom muaj zog ntawm lub zog cug thiab cov nplais qhua.
Ruam kev ua haujlwm: kom cov vuas nyob hauv qhov chaw uas tsis tau swb thaum lub sijhawm kho tus txheej txheem.
Lub sijhawm ua haujlwm thiab qhib qhib lub sijhawm qhib (lub sijhawm thaum cov vuas uas tuaj yeem hloov kho tom qab ntawv thov thiab hloov tau yooj yim.
4. Thermal rwb thaiv tsev mortars
Rau cov neeg de kas hauv thermal rwb thaiv tsev tshuab, HPMC pab txhawb los ntawm:
Cov Ntawv Thov Kev Thov: Ua rau nws yooj yim dua rau kev siv cov laug cam lossis cov tsho tiv no.
Txhim Kho Cohesion: kom ntseeg tau tias cov khoom siv insulating adheres zoo rau cov chaw thiab muab txheej txheej zoo ib yam nkaus.
Dej khaws cia: Txhim kho kho thiab txo qhov kev pheej hmoo ntawm cov kab nrib pleb vim yog dej nrawm.
5. Kho neeg nplua nuj
Nyob rau hauv kev txawj ntse siv rau kev kho vaj tse cov qauv, HPMC AIDS los ntawm:
Txhim kho cov haujlwm ua haujlwm: Ua kom cov tshuaj khib tau ua tau zoo tuaj yeem siv tau yooj yim thiab raug, txhaws cov kab nrib pleb thiab voids zoo.
Txhim kho Adhesion: muab kev sib raug zoo rau cov pob zeb uas twb muaj lawm, uas yog qhov tseem ceeb rau kev kho kom ruaj khov.
Shrinkage Txo: Txo shrinkage thaum kho, yog li txo qhov kev pheej hmoo ntawm kev nrwm nrhav.
Cov kev saib xyuas tswv yim
Thaum siv HPMC hauv lub tshuab-blasted cult ca ncu, qee cov kev txiav txim siab tswv yim yuav tsum khaws cia hauv siab:
Kev ntsuas tshuaj: Tus nqi HPMC tsim nyog yuav tsum tau siv kom ua tiav cov khoom xav yam tsis muaj zog thiab kev ncaj ncees ntawm lub cug.
Kev sib xyaw: Nws yog qhov tseem ceeb kom ntseeg tau tias HPMC tau sib txuas nrog lwm cov tshuaj ntxiv thiab cov khoom sib xyaw ua ke.
Kev sib xyaw: cov txheej txheem sib xyaw kom zoo yuav tsum tau ua kom tiav HPMC thiab Disperse nws uniformly thoob plaws qhov sib tov.
HPMC lub luag haujlwm hauv tshuab-blasted cug yog multifaceted, txhim kho cov kev ua tau zoo thiab thov cov khoom ntawm ntau hom kev nplua nuj. Seb puas tau rov qab ua, plastering, kev coj ua tus kheej, lossis kho dua, HPMC kom zoo nkauj thiab ua tau zoo, muab cov txiaj ntsig ntev thiab muaj txiaj ntsig zoo. Nws lub peev xwm los txhim kho cov dej cia, kev ua haujlwm, thiab rheology ua rau nws muaj kev tsis sib haum xeeb no tuaj yeem ua tiav sai sai thiab rau tus txheej txheem siab. Raws li kev tsim kho thev naus laus zis hloov zuj zus, kev siv HPMC feem ntau yuav nthuav dav ntxiv, tsav los ntawm kev tshawb fawb txuas ntxiv thiab kev txhim kho mus rau nws lub peev xwm thiab cov txiaj ntsig.
Lub Sijhawm Post: Jun-07-2024