HPMC (HydroxyPropyyl methylcellulose)yog cov polymer compound dav siv hauv cov khoom noj. Nws muaj cov thickening zoo heev, dispersing, dej ceev thiab cov nplaum muaj zog, yog li nws tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom noj. Hauv cov txheej txheem tsim thiab kev thov cov khoom noj, lawv feem ntau ntsib teeb meem xws li kev txhim kho fluidity, ua kom muaj zog zuj zus, thiab txhim kho lub zog. Qhov sib ntxiv ntawm HPMC tuaj yeem daws cov teeb meem no tau zoo.
1. Txhim kho cov fluidity thiab workability ntawm xis mas slurry
Hauv cov txheej txheem ntau lawm ntawm cov khoom noj khoom haus, cov kua txiv yog qhov tseem ceeb cuam tshuam rau kev tsim kho cov haujlwm thiab cov khoom lag luam zoo. Raws li cov tuab polymer, HPMC tuaj yeem tsim cov qauv kev ruaj khov hauv Maas Slurry thiab ua haujlwm ntawm slurry. Nws tuaj yeem txo qhov viscosity sib txawv ntawm Maas slurry, ua cov slurry ntau dua yas thiab yooj yim rau kev tsim kho thiab ncuav. Tsis tas li ntawd, HPMC tuaj yeem tswj cov kev sib txuam ntawm cov xis mas slurry, tiv thaiv cov cement slurry los ntawm kev sib cais thaum lub sijhawm ua haujlwm.
2. Txhim khu cov dej tuav ntawm cov khoom noj
Cov txheej txheem hydration ntawm cov cement yog tus yuam sij rau kev tsim ntawm lub zog ntawm cov khoom noj. Txawm li cas los xij, yog tias cov dej hauv cov cement slurry evaporates los yog poob dhau sai sai, yog li cuam tshuam rau lub zog thiab kev sib cav ntawm cov khoom noj. HPMC muaj cov dej khov kho, uas tuaj yeem ua kom zoo nqus dej, thiab tswj cov dej hiav txwv uas muaj peev xwm ua rau cov txiv qaub ua ke, yog li kev txhim kho lub zog thiab lub zog ntawm lub Cov khoom noj khoom haus. Ntawj ntom.
3. Txhim kho qhov tawg tsis kam thiab tawv ntawm MAAs khoom
Cov khoom siv xis mas tau dhau los tawg thaum lub sijhawm ua kom tawv nqaij tawv, tshwj xeeb tshaj yog qhov chaw poob qis los ntawm kev noo noo thaum lub sijhawm ua kom ntub dej. Qhov kev sib txuas ntawm HPMC tuaj yeem txhim kho qhov tawg tsis kam ntawm cov khoom noj khoom haus cov khoom noj los ntawm kev nce vencoelasticity ntawm slurry. Cov qauv molecular ntawm HPMC tuaj yeem tsim cov qauv network hauv kev ntxhov siab thiab txo qhov kev ntxhov siab sab hauv thaum lub sij hawm ua kom tawg, yog li txo qhov tshwm sim ntawm cov kab nrib pleb. Tsis tas li ntawd, HPMC kuj tseem tuaj yeem txhim kho kev sib zog ntawm cov khoom noj xis mas ua rau lawv tsis tshua tawg ua kom tawg lossis qis-kub.
4. Txhim kho cov dej tsis kam thiab cov khoom siv ruaj khov ntawm cov khoom noj xis
Lub durability thiab dej tsis kam ua cov khoom noj xis mas cuam tshuam nrog lawv qhov kev ua tau zoo hauv qhov chaw hnyav. HPMC tuaj yeem ua cov yeeb yaj kiab ruaj khov hauv cov Maas Slurry kom txo qis kev nkag ntawm ya raws thiab lwm yam teeb meem. Nws kuj tseem tuaj yeem txhim kho cov dej tsis kam ntawm cov khoom siv xis los los ntawm kev txhim kho lub nteg thiab txhim kho cov khoom noj kom noo. Thaum siv sijhawm ntev, cov khoom siv kom ruaj khov nyob hauv ib puag ncig siab lossis kev yaig, thiab nthuav lawv lub neej.
5. Txhim kho lub zog thiab qhov tawv nqaij tawv heev ntawm cov khoom siv MAAs
Thaum lub sij hawm cov txheej txheem tshuaj tiv thaiv kev hloov pauv ntawm cov khoom siv Maas ntawm Caas saturry thiab nce qib kev loj hlob ntawm kev ua kom xis mas. Ib qho ntxiv, HPMC tuaj yeem ua kom tiav txoj kev sib raug zoo ntawm cov cement thiab txhim kho lub zog ua kom tiav cov khoom siv kom zoo nkauj, thiab yog li txhim kho lub zog kawg. Hauv qee cov ntawv thov tshwj xeeb, HPMC kuj tseem tuaj yeem hloov kho cov tshuaj hydration ntawm cov cement kom yoog raws li kev tsim qauv.
6. Txhim kho cov tsos thiab qhov zoo ntawm cov khoom noj khoom haus MAAs
Cov tsos zoo ntawm cov khoom siv xiss yog qhov tseem ceeb rau kev tsim kho zaum kawg, tshwj xeeb tshaj yog nyob rau qhov chaw zoo nkauj thiab zoo nkauj ntawm qhov tseem ceeb los ntsuas qhov zoo. Los kho cov viscosity thiab rheological cov yam ntxwv ntawm Maas slurry, yog li ua kom muaj peev xwm txo cov khoom lag luam thiab smoother, thiab txhim kho cov tsos zoo. Hauv qee cov khoom siv kom zoo nkauj xis mas, kev siv HPMC kuj tseem tuaj yeem txhim kho cov kev sib txuam thiab ruaj khov ntawm lawv cov xim, muab cov khoom lag luam ib qho tsos ntxiv.
7. Txhim kho cov qos tsis kam ntawm MAAs cov khoom
Cov khoom siv xis mas siv rau hauv qhov chaw tsawg kub uas yuav tsum muaj qee qib ntawm Frost kuj los tiv thaiv cov kab nrib pleb thiab kev puas tsuaj los ntawm khov-thaw mus. HPMC tuaj yeem txhim kho lub zog ua kom tsis kam ntawm cov khoom noj kom xis mas los ntawm kev txhim kho cov qauv kev ruaj ntseg ntawm xis mas slurry. Los ntawm kev txhim kho qhov kev sib txuas ntawm cov khoom noj thiab txo cov ntsiab lus noo noo thiab zam cov kev puas tsuaj ntawm cov xis nyob los ntawm kev nthuav dav ntawm cov nqaij.
Daim ntawv thov ntawmHPMCHauv cov khoom noj khoom haus kom muaj ntau yam ntawm cov txiaj ntsig thiab tuaj yeem txhim kho kev ua tau zoo ntawm cov khoom noj ntawm cov khoom noj tau zoo. Nws tsis tuaj yeem txhim kho kom muaj lub fluentity, dej ceev thiab lub zog tiv taus thiab muaj zog txhim kho zoo, ruaj khov ntawm cov khoom noj khoom haus xis. Raws li kev tsim txom kev tsim kho txuas ntxiv txhawm rau txhim kho kev ua tau zoo ntawm cov khoom noj, HPMC yuav tau siv ntau dua thiab kev txhawb nqa tau zoo rau kev tsim khoom thiab kev siv cov khoom noj.
Lub Sijhawm Post: Dec-06-2024