HPMC (HydroxyPropyyl methylcellulose), raws li ib feem siv siv cov tshuaj tsim cov khoom siv ntxiv, yog siv dav hauv cov ntaub ntawv hauv tsev xws li Mortars, tsho nplaum thiab cov nplaum. Raws li cov tuab thiab hloov kho thiab hloov kho, nws tuaj yeem txhim kho qhov ua haujlwm ntawm cug.
1. Cov yam ntxwv ntawm HPMC
HPMC yog cov khoom siv hluavtaws semi-hluav taws xob polymer uas tau los ntawm kev hloov tshuaj lom neeg ntawm ntuj cog cellulose. Nws cov khoom tseem ceeb suav nrog cov dej solubility zoo, thickening, zaj duab xis ua kom zoo, dej ceev ceev thiab kub tiv. Cov qauv molecular ntawm kev txhawj xeeb ®
2. Lub ntsiab lus ntawm kev ua haujlwm ntawm cug
Lub zog ntawm coll hais txog qhov yooj yim ntawm kev yooj yim ntawm kev ua haujlwm, kev siv tshuaj cug, suav nrog nws cov yas, fluesion thiab zaub mov tsis muaj zog. Kev ua haujlwm zoo tuaj yeem ua rau tshuaj tshuaj yuav yooj yim thov thiab du thaum kev tsim kho, thiab txo kev ua haujlwm zoo li hollows thiab nrib pleb. Yog li ntawd, txhim kho cov haujlwm cug ntawm cug yog qhov tseem ceeb tshaj kom txhim kho kev tsim kho thiab ua kom zoo tshaj plaws.
3. Tus cawv ntawm HPMC ntawm kev ua haujlwm ntawm cug
Txhim kho cov dej ceev ceev ntawm cug
HPMC tuaj yeem txhim kho cov dej rov qab los ntawm cug. Nws txo cov dej evap ntawm kev sib sau cov txheej txheej hydration, yog li txuas lub tshuaj khib thiab tiv thaiv cov dej kom nrawm nrawm lossis poob dej. Tshwj xeeb tshaj yog nyob rau hauv kub lossis qhuav ib puag ncig kev mob ib puag ncig, kev thaiv nws los ntawm kev ua haujlwm cap yooj yim rau kev lag luam thaum muaj kev ua haujlwm kev tsim kho. Nws yog qhov tsim nyog tshwj xeeb rau kev tsim kho thaj chaw loj thiab cov kev ua haujlwm nyias txheej txheej.
Txhim kho cov nplaum ntawm cug
HPMC tuaj yeem txhim kho txoj kev sib raug zoo ntawm coll thiab hauv paus nto. Nws cov pawg saum npoo av (xws li methyl thiab hydroxypropyl) thiab lwm yam kev sib xyaw ua ke los txhim kho cov colling cug lub cug lub catting. Qhov kev ua kom zoo no tuaj yeem txo cov kev pheej hmoo ntawm cov txheej lossis txheej txheej plaster poob thiab txhim kho kev ntseeg tau ntawm kev tsim kho.
Txhim kho lub fluidity ntawm cug
HPMC txhim kho lub tshuaj khib nyiab los ntawm cov thickening, ua rau nws yooj yim dua rau cov neeg ua haujlwm ua haujlwm thaum lub sijhawm tsim kho. Yog ib qho ntawm cov ntsuas tseem ceeb ntawm kev ua haujlwm ntawm cug. Zoo fluidity pab kom sai siv nws mus rau thaj chaw loj lossis cov chaw tsim khoom siv, txo lub sijhawm tsim kho. HPMC tuaj yeem ua kom zoo rau cov khoom siv ntawm cug kev sib khib thiab qhov ruaj khov thaum lub sij hawm nqus dej, scraping thiab lwm yam haujlwm, thiab tsis txhob los ntshav lossis dej sib cais.
Kho qhov sib xws thiab du ntawm cug
Qhov sib xws ntawm cap ncaj ncaj cuam tshuam rau qhov yooj yim ntawm kev tsim kho. Kev txhawj xeeb ® Tsis tas li ntawd, HPMC kuj tseem tuaj yeem nce kev npleem ntawm culture ntawm cultionance ntawm kev ua haujlwm tsim kho, yog li txo kev ua haujlwm thaum kev ua haujlwm thiab txhim kho kev tsim kho efficiency.
Ncua Sijhawm Qhib Sijhawm
Kev siv hluav taws xob tsim kho, lub sijhawm qhib yog tias lub tshuaj khib kuj tseem tuaj yeem tswj cov nplaum zoo tom qab tau thov rau hauv lub hauv paus. HPMC muaj cov txiaj ntsig ntawm kev ncua dej evaporation, uas tuaj yeem ua kom zoo txuas lub sijhawm qhib ntawm cug, tshwj xeeb tshaj yog nyob rau ib puag ncig cua sov. Lub sijhawm qhib lub sijhawm tsis tuaj yeem tsuas txhim kho cov kev kho vaj tse, tab sis kuj tseem zoo zam cov teeb meem xws li pob qij txha thiab hollows thaum lub sijhawm tsim kho.
Txo kom los ntshav thiab delamination
Los ntshav thiab delamination yuav tshwm sim thaum lub sijhawm tsim qauv ntawm kev tshuaj khib, uas tshwj xeeb tshaj yog muaj nyob hauv cov cement cug. HPMC pab tiv thaiv kom txhob los ntshav thiab dej nag thiab dej nag los ntawm kev txhim kho cov qauv viscosity ntawm cov kev sib xyaw ntawm nws cov molecules. Qhov no tso cai rau lub tshuaj khib kom tswj cov kev sib txawv zoo thiab ruaj khov tom qab tau muab tso rau ntev thiab zam kev ua haujlwm.
Txhim kho cov qos ua rau ntawm cug
Hauv cov chaw txias, cov frantachenance ntawm cug yog qhov tseem ceeb tshaj. Vim nws cov qauv tshwj xeeb, HPMC tuaj yeem ua ib qho hluav taws xob nruab nrab hauv cov tshuaj khib, txo qhov kev pheej hmoo ntawm cov dej noo khov. Los ntawm kev ntxiv tus nqi tsim nyog ntawm HPMC mus rau lub tshuaj khib, tiv thaiv kom tau zoo dua, tiv thaiv kab nrib pleb muaj peev xwm ua tau zoo rau cov chaw muaj txiaj ntsig zoo, thiab ua kom tau zoo dua qub.
4. Kev ceev faj rau kev siv HPMC
Txawm hais tias HPMC tuaj yeem txhim kho qhov ua haujlwm ntawm coll, cov ntsiab lus hauv qab no yuav tsum tau sau tseg thaum siv:
Kev tswj hwm ntawm qhov nyiaj ntxiv: Ntau dhau ntawm HPMC yuav ua rau muaj vortcosity ntau, cuam tshuam nws cov xim thiab ua haujlwm; Ib yam nkaus ntxiv kuj yuav tsis txaus los txhim kho kev ua haujlwm. Yog li ntawd, tus nqi ntxiv yuav tsum tau hloov kho raws li cov kev xav tau ntawm cov tshuaj khib thiab chaw tsim kho.
Kev sib xyaw nrog lwm cov kev sib ntxiv: HPMC tuaj yeem muaj qee yam kev sib txuas lus nrog lwm cov ntaub ntawv yuav tsum tau kuaj ntawm cov qauv kom tsis txhob muaj kev sib raug zoo.
Kev Cia Yuav Tsum Muaj Cai: HPMC yuav tsum muab cia rau hauv ib puag ncig qhuav, cua, kom deb ntawm noo noo thiab kub, los tswj nws qhov kev ua tau zoo.
Raws li ib tug tseem ceeb cap camp ntxiv,HPMCUa si lub luag haujlwm tseem ceeb hauv kev txhim kho lub zog ntawm kev cug. Nws tuaj yeem txhim kho cov dej khaws cia, flueion, adhesion thiab khov rau ntawm cug, txuas lub sijhawm qhib thiab txhim kho kev tsim kho. Raws li kev tsim kho cov kev tsim kho cov kev tsim kho kom nce ntxiv, ntxhov siab rau kev siv lub luag haujlwm ntau dua thiab yuav tsum tau siv lub luag haujlwm ntau dua thiab yuav tau ua lub luag haujlwm ntawm cov qauv ntawm cov khoom siv ntau yam yav tom ntej. Txawm li cas los xij, nyob rau hauv cov txheej txheem thov tiag tiag, cov neeg ua haujlwm tsim nyog xav tau kev tsim kho ntawm HPMC raws li cov kev tsim kho kom sib txawv thiab ib puag ncig kom ua tiav cov nyhuv zoo tshaj plaws.
Lub Sijhawm Post: Jan-02-2025