MHEC (methyl hydulose) yog lub cellulose cellulose ether uas yog siv dav hauv cov khoom siv hauv tsev, tshwj xeeb yog nyob hauv cov qauv ntawm cov nplaum ua kom cov nplaum. MHEC tsis tuaj yeem tsuas txhim kho kev tsim kho cov kev tsim kho ntawm cov khoom siv ceramic cov khoom nplaum, tab sis kuj txhim kho nws cov khoom siv me ntsis thiab lub zog ua kom muaj zog.
1. Cov dej zoo ua kom ua tau zoo
Ib qho ntawm lub luag haujlwm tseem ceeb ntawm MHEC nyob rau hauv lub pobzeb MAAs nplaum yog nws cov khoom siv dej zoo heev. Thaum lub sij hawm tsim cov txheej txheem ntawm cov nplais nplaum, xis mas thiab lwm yam khoom xyaw yuav tsum muaj dej noo txaus kom tiav cov tshuaj tiv thaiv dej. Los ntawm nws cov dej ua kom muaj peev xwm ua kom muaj peev xwm txo qis kev ua haujlwm ntawm kev txhim kho ntawm cov khoom noj kom huv thiab kev txhim kho cov nyhuv ntawm cov khoom noj kom zoo.
Tshwj xeeb tshaj yog thaum tsim ntawm cov dej ntws heev, cov dej noo hauv cov khoom noj kom yooj yim sai sai, ua rau muaj cov cement thiab li ntawd cuam tshuam rau kev sib raug zoo. Kev ua kom dej siab ua tau zoo ntawm MHEC tuaj yeem ua kom cov dej no muaj cov khoom siv tau yooj yim dua.
2. Cov nyhuv zoo heev
Raws li cov tuab dua, MHEC tuaj yeem txhim kho lub viscosity thiab rheological cov khoom ntawm cov pobzeb nplaum. Nws cov qauv molecular ua rau nws ua kom ruaj khov colloidal cov kev daws teeb meem hauv dej uas yog qhov ua kom zoo nkauj thiab nplaum. Thaum tus tsim kho cov nplais nplaum, cov fluasive thiab plasticity ntawm cov tshuaj colloidal tau txhim kho, tusyov ntxiv rau saum npoo ntawm substrate.
Ib qho ntxiv, cov nyhuv thickening ntawm MHEC kuj ua rau cov nplais nplaum muaj cov swb zoo thaum kev tsim cov ntsug. Rau phab ntsa kev tsim kho, lub fluidity ntawm cov nplais nplaum yuav tsum tau tswj nyob rau qee qhov kev tiv thaiv thaum past vuas. MHEC ua tau zoo daws cov teeb meem no los ntawm muab viscosity tsim nyog thiab adhesion.
3. Txhim Kho Kev Tsim Kho Yooj Yim
MHEC tuaj yeem txhim kho cov khoom tuav ntawm cov nplais nplaum. Hauv kev tsim kho, cov neeg ua haujlwm tsim kho cia siab tias cov nplaum yuav tsis tsuas yog muaj lub sijhawm qhib ntev (nws tuaj yeem ua kom muaj kev tiv thaiv zoo), tab sis kuj tseem muaj cov tshuaj tiv thaiv zoo thiab tsis yooj yim. MHEC muab cov nplaum ua haujlwm zoo heev thiab kev ua haujlwm los ntawm kev kho cov khoom sib dhos ntawm cov nplaum. Vim nws cov solubility zoo hauv dej thiab me ntsis viscosity, cov neeg ua haujlwm tsim kho tau yooj yim siv cov nplais uas muaj kab ke sib xyaw thiab cov subming. Nyob rau tib lub sijhawm, teeb meem xws li qhov tsis sib xws thiab muaj kev tsis txaus siab tsis tshua muaj tshwm sim thaum lub sijhawm tsim kho.
MHEC tuaj yeem nce cov nplaum kom qhuav rau ziab, muab sijhawm rau cov neeg ua haujlwm siv sijhawm los kho cov nplais pastting txoj hauj lwm, yog li txo cov yuam kev.
4. Txhawb txoj kev sib raug zoo ntawm lub zog ntawm cov nplaum
MHEC tuaj yeem txhim kho lub zog uas muaj zog ntawm cov nplais nplaum, uas yog ib qho ntawm nws cov khoom tseem ceeb ntawm cov khoom noj khoom haus caent-raws li cov nplaum. Cov dej ua kom ruaj khov ntawm MHEC txhawb nqa cov kev faib khoom tsis zoo ntawm cov dej, kom haum rau cov qauv tshuaj yeeb yaj kiab, yog li muaj kev txhim kho cov khoom sib txawv ntawm lub zog.
MHEC txhim kho lub microstructure ntawm cov ntxhib cov ntaub ntawv kom lawv muaj lub zog loj dua ntawm cov vuas luaj, yog li nce cov kab ceramic thiab ua kom tawg lossis ua rau muaj kev ntxhov siab.
5. Txhim kho huab cua tsis kam thiab tawg
Cov huab cua tiv thaiv thiab tawg tsis kam ntawm dib maas cov nplaum kuj tseem muaj qhov tseem ceeb hauv kev siv. Qhov kev sib txuas ntawm MHEC tuaj yeem txhim kho qhov hloov tau ntawm cov nplaum, tso cai kom muaj kev sib raug zoo nyob rau hauv cov kev mob hnyav raws li qhov kub thiab txias hloov thiab av siab. Maas-raws cov nplaum nws tus kheej yog nquag mus tawg thiab poob rau hauv kev ntxhov siab vim yog qhov ua kom cov cement. MHEC tuaj yeem zam qhov teeb meem no los ntawm kev txhim kho txoj kev muaj peev xwm thiab hloov tau ntawm cov nplaum.
6. Ib puag ncig ua phooj ywg
MHEC yog ib qho kev ua haujlwm cellulose derivative nrog kev tiv thaiv zoo thiab kev tiv thaiv ib puag ncig. Nyob rau hauv txoj kev tam sim no ntawm lub tsev ntsuab cov ntaub ntawv, mHEC tau dhau los ua kev xaiv zoo nkauj thiab muaj zog xws li tsis muaj tshuaj lom, tsis muaj kuab lom thiab tsis muaj kev puas tsuaj. Nyob rau tib lub sijhawm, nws tseem zoo sib xws nrog lwm cov kev sib ntxiv, kev ua phooj ywg ib puag ncig yam tsis cuam tshuam rau kev ua tau zoo ntawm lwm cov khoom.
7. Ntsev tsis kam thiab impermability
Hauv qee cov ntawv thov tshwj xeeb, xws li cov chaw muaj huab cua kev loj lossis ib puag ncig saline-alkali Nws tuaj yeem tsim cov txheej txheem tiv thaiv hauv cov ntaub ntawv tso cai kom tiv thaiv kev cuam tshuam ntawm noo noo lossis ntsev, yog li txhim kho cov kev ua kom ruaj khov thiab corrosion tsis zoo ntawm cov nplaum. Cov cuab yeej no yog qhov tshwj xeeb tshaj yog nyob rau hauv ntug hiav txwv lossis hauv av ua haujlwm hauv av, ua kom lub neej muaj txiaj ntsig ntev ntawm cov nplais nplaum.
8. Tus nqi-ua hauj lwm zoo
Txawm hais tias qhov sib ntxiv ntawm MHEC ntxiv yuav nce cov khoom siv ntawm cov nplais nplaum, kev txhim kho tag nrho hauv kev ua tau zoo rau cov nqi no muaj nqi. Nws txhim kho qhov yooj yim ntawm cov ntawv thov ntawm cov nplaum, txuas ntxiv cov khoom tsim kho, txuas ntxiv ua haujlwm lub neej, thiab tseem txo tus nqi ntawm kev saib xyuas thiab kho vaj tse tom ntej. Rau cov txheej txheem loj-teev lossis cov kev siv MHEC tuaj yeem txhim kho cov kev tsim kho zoo tag nrho thiab coj tus nqi ntau dua rau txoj haujlwm.
MHEC ua yeeb yam Irreplacable lub luag haujlwm hauv pawg ua ke cov nplaum. Nws txhim kho cov kev ua tau zoo ntawm cov nplaum ua kom zoo nkauj los ntawm nws cov dej ua kom zoo, ua kom zoo, yooj yim ntawm txoj kev tsim kho. Nyob rau tib lub sijhawm, MHEC ib puag ncig kev tiv thaiv, huab cua tsis kam, tawg tsis kam thiab lwm yam ntxwv tau txhawb nws cov ntaub ntawv dav hauv cov khoom siv niaj hnub no. Nrog rau kev txhim kho txuas ntxiv ntawm cov khoom ua tau zoo rau kev tsim kho, daim ntawv thov kev cia siab ntawm MHEC hauv cov pobzeb pobzeb yuav muaj dav.
Lub Sijhawm Post: Feb-17-2025