HydroxyPropyyl methylcellose (HPMC) yog cov dej-soluble polymer dav siv hauv cov khoom siv hauv tsev, tshwj xeeb yog cov khoom xyaw. Nws ua lub luag haujlwm tseem ceeb hauv ntau theem thaum kev tsim kho thiab tom qab siv, tshwj xeeb tshaj yog hauv kev txhim kho adhesion.
1. Cov yam ntxwv yooj yim thiab kev siv tshuab ntawm kev ua ntawm HPMC
Raws li cov tsis-ionic cellulose ether, HPMC muaj dej solubility siab thiab viscosity stabilability. Nws cov qauv molecular muaj cov pab pawg hydroxyl thiab methoxy pab pawg, uas ua rau muaj kev hloov kho zoo li cas, viscosity thiab dej muab tshuaj txhuam ntawm cov cement muab tshuaj txhuam. Thaum HPMC yog yaj hauv dej, txoj kev daws teeb tau zoo lubricity, zaj duab xis-ua thiab nplaum cov khoom, uas tau siv dav hauv cov khoom siv xis mas raws li cov ntaub ntawv.
Cov ADHesion txhim kho cov nyhuv HPMC yog ua tiav tau los ntawm cov txheej txheem hauv qab no:
Kev Txhim Kho Cov Dej Ua Kom Tau Los: HPMC tuaj yeem ua kom cov dej rov qab hauv cov cement muab tshuaj txhuam kom sai thiab ua kom muaj kev haus dej kom huv. Cov tshuaj tiv thaiv dej ntawm cov cement yog tus yuam sij rau kev txiav txim siab nws lub zog thiab adhesion. Cov dej tuav tseg ntawm HPMC txhim kho lub zog kawg thiab cov nplaum ntawm cov khoom noj yog cov khoom noj.
Txhim kho kev sib txawv thiab ua haujlwm: HPMC tuaj yeem nce cov khoom siv viscasing ntawm kev tsim kho kom zoo, thiab txo sagging thiab vau. Tsis tas li ntawd, HPMC tuaj yeem txhim kho cov vacy condicity ntawm cov khoom, ua rau nws hnav zoo dua thaum ntawv thov lossis tso, thiab txhim kho kev tsim kho tau zoo.
Ua kom muaj zog sib luag: HPMC tuaj yeem tsim cov nplaum muaj zog nyob rau saum npoo ntawm cov txheej txheem los ntawm kev tsim cov yeeb yaj kiab nyias nyias nrog kev sib zog. Tshwj xeeb tshaj yog nyob rau porous substrates lossis du thaj chaw, HPMC nce cov khoom siv ua kom muaj zog ntawm cov khoom siv Maas?
2. Cov txiaj ntsig tshwj xeeb ntawm HPMC hauv kev txhim kho cov nplaum ntawm cov khoom noj qab zib.
Txhim kho cov haujlwm thiab viscosity ntawm cug
Ntxiv HPMC rau tshuaj khib yuav tuaj yeem txhim kho nws li niaj zaus thiab ua kom zoo dua qub, nws tuaj yeem tiv thaiv cov teeb meem sagging ntawm cug. Nws tuaj yeem txhim kho cov nplaum ntawm cug thiab substrate saum npoo, kom paub meej daim ntawv thov uas muaj pov tseg, thiab txo cov khib nyiab thiab pov tseg thaum kev tsim kho.
Txhim kho cov dej hauv tsev thiab txo cov kev tawg
HPMC cov dej siab khaws cia yog qhov tshwj xeeb tshaj yog muaj kev tshwj xeeb hauv cov chaw qhuav. Nws tuaj yeem tiv thaiv kev nrawm nrawm ntawm cov dej hauv cov khoom siv Maas-based tom qab kev tsim kho thiab paub meej txog kev ua dej xis. Cov nyhuv ceev no txo cov teeb meem ntawm cov ntaub ntawv tawg tshwm sim los ntawm kev siv nrawm nrawm, tshwj xeeb tshaj yog thaum kev tsim kho loj dua yog ua tau zoo. Los ntawm kev nce qib ntawm kev ua kom dej xis, lub zog tag nrho thiab lub zog ntawm cov khoom kuj tseem ua kom zoo dua.
Txhim kho tsev thiab txhim kho adhesion rau lub substrate
HPMC cov cuab yeej ua yeeb yaj kiab ua rau nws ua yeeb yaj kiab nplaum rau ntawm cov khoom sib koom ua ke ntawm cov khoom sib koom ua ke ntawm cov khoom noj kom haum. Txawm hais tias nws yog siv rau cov khoom siv xws li pob zeb ua pob zeb, cib lossis gypsum, HPMC tuaj yeem muab cov khoom nplaum muaj zog xws li cov khoom siv uas muaj zog xws li cov khoom siv uas muaj zog lossis cov khoom noj tom qab ziab. Qhov no yog qhov tshwj xeeb tshaj yog rau cov khoom lag luam xws li nyias-txheej mortars thiab vuas cov nplaum uas yuav tsum muaj zog ua kom muaj zog.
Txhim kho los tiv thaiv kev ua tau zoo
Thaum lub sijhawm ua ntawv thov cov khoom siv CAs-based, tshwj xeeb tshaj yog nyob rau kev tsim kho kom zoo, nws feem ntau tau ntsib tias cov khoom sags vim lub ntiajteb txawj nqus vim lub ntiajteb txawj nqus. HPMC tuaj yeem nce cov khoom siv viscosity thiab sib xws ntawm cov khoom siv rau kev hloov pauv, yog tsis txhob hloov kho ua ntej, yog li kev txhim kho kev tsim kho zoo thiab txo cov kev kho.
Txhim kho durability thiab tawg tsis kam
Cov nplaum muab los ntawm HPMC tsis yog muaj kev cuam tshuam hauv kev tsim kho, tab sis kuj nyob rau hauv lub durability thiab kev ruaj ntseg tom qab siv. Nws tuaj yeem ua kom tau qhov yooj thiab tawg tsis kam ntawm cov khoom siv rau caas, thiab zam kom tsis txhob tawg nyob rau hauv cov ntaub ntawv thaum ntsuas kub hloov lossis siv zog tsis xwm yeem. Qhov kev hloov pauv no txuas ntxiv cov kev pabcuam lub neej ntawm cov ntaub ntawv tsim tsev thiab txo cov nqi txij nkawm.
3. Daim ntawv thov ntawm HPMC hauv cov khoom sib txawv cement
Vuas nplaum nplaum
HPMC yog ib qho ntawm cov khoom tseem ceeb ntawm cov vais nplaum. Txij li cov pobzeb nplaum muaj cov qib siab rau cov nplaum, ua kom cov vuas luaj, ua kom cov vuas luaj, kom cov vuas luaj, ua tau ruaj khov rau lub sijhawm ntev tom qab tso. Nyob rau tib lub sijhawm, cov dej khaws cia ntawm HPMC tuaj yeem tiv thaiv cov nras ntawm cov txheej txheem casent ntawm cov txheej txheem ziab thiab txhim kho lub durability ntawm cov nplaum.
CUG SELFLING CUG
Kev siv tus kheej txoj kev sib khib yuav tsum tau hais tias cov khoom siv tau zoo fluidity thaum lub sij hawm tsim, thaum tsis ua rau tsis sib luag lossis sagging vim muaj floty. Daim ntawv thov ntawm HPMC nyob rau hauv tus kheej-level sib nraws cug peev xwm tsis tsuas yog nws cov nplaum kom zoo rau lub sijhawm ua kom zoo thiab txo cov hollowing thiab tawg.
Cov tsho ntoo waterproof
HPMC tseem dav siv hauv kev ua kom zoo nkauj lub tsho tiv no, uas tuaj yeem txhim kho kev tsim kho cov kev tsim kho ntawm cov txheej txheem, txhim kho nws cov adhesion thiab waterproof ua tau zoo. Cov dej ua kom ruaj khov thiab ua yeeb yaj kiab ua yeeb yam ntawm HPMC ua kom paub meej tias cov dej tsis muaj zog tuaj yeem tsim kho thiab txuas ntxiv lub neej.
Raws li ib qho tseem ceeb ntxiv hauv cov khoom noj khoom haus cov cement, HPMC tseem ceeb txhim kho cov nplaum thiab kev tsim kho ntawm cov khoom siv no. Los ntawm kev ua kom cov dej ua kom muaj zog, viscosity thiab xwm yeem, thiab txhim kho addtion, HPMC tau pom zoo rau cov khoom siv Maas-raws li cov khoom siv. Txawm hais tias nyob rau hauv cov liaj teb ntawm collhes, pobzeb cov txheej txheem, HPMC tuaj yeem txhim kho kev ua haujlwm zoo thiab qhov zoo ntawm cov khoom lag luam, thiab txo cov nqi tu tom ntej. Yog li ntawd, HPMC tau dhau los ua qhov tsis tseem ceeb thiab tseem ceeb hauv cov khoom noj ua ke.
Lub Sijhawm Post: Feb-17-2025