Hydroxyether Metthylcellulose (Hemc), raws li ib feem ntau siv dej-soluble polymer compound, muaj qhov tseem ceeb hauv kev tso cai ua kom haum. Nws cov qauv tshuaj tso cai rau nws ua lub luag haujlwm tseem ceeb hauv kev txhim kho kev ua tau zoo ntawm cov txheej txheem cement.
1. Txhim kho kev tsim kho kev tsim kho
Thaum lub sij hawm tsim kho cov txheej txheem cement-raws li cov txheej txheem cement, filmity thiab kev ua haujlwm yog qhov tseem ceeb rau cov txheej txheem zoo thiab tsim kev ua haujlwm. HEMC tuaj yeem txhim kho kev tsim kho cov kev tsim kho ntawm kev ua kom zoo ntawm kev nce lub viscosity thiab dej khaws cia ntawm cov txheej txheem. Cov kev ua tau zoo yog:
Txhim kho cov kev ua haujlwm ntawm cov xim: HEMC tuaj yeem nce cov xim sib xws, ua kom muaj cov xim txheej thiab tsis txhob muaj teeb meem xws li cov xim ntws thiab dripping.
Txhim khu cov dej tuav ntawm cov txheej txheem: hemc tuaj yeem txhim kho cov dej ua kom cov dej xis, thiab ua kom muaj kev sib luag thiab ruaj khov ntawm txheej.
Cov yam ntxwv no yog tsim tshwj xeeb rau kev tsim kho cov xwm txheej uas xav tau cov haujlwm ntev. Nws tuaj yeem ua kom paub tseeb tias cov cement slurry yuav tsis tau ua ntej thaum lub cev txheej txheem txheej txheem, yog li ua kom muaj txiaj ntsig zoo ntawm cov txheej.
2. Ncua Sijhawm Qhib
Lub sijhawm qhib ntawm cov xim xis mas raws lub sijhawm yog lub sijhawm tom qab cov xim tau thov tias nws tseem tuaj yeem raug tswj lossis ua tiav. Raws li cov thickener ua kom zoo dua, HEMC tuaj yeem txuas ntxiv lub sijhawm qhib ntawm Maa-based txheej, yog li muaj kev siv kev siv kev siv kev siv khoom. Tom qab ntxiv hemc rau cov yeeb nkas raws li txoj hnyuv, cov neeg ua haujlwm uas muaj sijhawm ntxiv los kho cov txheej thiab txiav kom tsis txhob kho cov teeb meem sai ntawm cov txheej.
3. Txhim kho cov nplaum pleev xim
Tus tseem ceeb Muaj peev xwm txhim kho cov nplaum ntawm txheej thiab cov txheej txheem hauv cov yeeb nkas-raws li cov chaw ua kom du, tshwj xeeb yog cov hlau, iav, thiab lwm yam). Qhov sib ntxiv ntawm HEMC tuaj yeem txhim kho cov nplaum ntawm txheej. Tsom. Nyob rau hauv txoj kev no, tsis tsuas yog lubricability ntawm cov txheej yog txhim kho, tab sis kuj tseem tawm tsam kev poob peev ntawm cov txheej txheej yog txhim kho.
4. Txhim kho qhov tawg tsis kam ntawm txheej
Cov cement-based pleev xim yog nquag los tawg thaum lub sij hawm kho cov txheej txheem, tshwj xeeb tshaj yog cov txheej txheem tuab lossis qhov chaw kub. HEMC tuaj yeem txhim kho cov qauv txheej txheem ntawm nws cov qauv molecular, txo lub ntim shrinkage tshwm sim los ntawm cov dej volatilization, thiab txo qhov tshwm sim ntawm cov kab nrib pleb. HEMC kuj tseem cuam tshuam nrog lwm cov tib yam hauv kev ua kom ruaj khov network qauv, txuas ntxiv ntawm cov txheej txheem nrawm thiab tawg ntawm cov txheej.
5. Txhim kho cov dej tsis kam ntawm cov txheej txheej
Cov dej tsis kam ntawm cov caas-based txheej yog qhov tseem ceeb rau kev tsim kho tsev, hauv qab, thiab lwm thaj chaw raug cov dej noo lossis dej. Cov khoom siv dej-khaws cia ntawm HEMC tuaj yeem ua kom qeeb qeeb poob ntawm cov dej khov ntawm cov dej khov, yog li kev txhim kho cov dej tsis kam ntawm cov txheej. Tsis tas li ntawd, Hemc tuaj yeem siv cov khoom siv nrog cov khoom xyaw ua kom cov khoom xyaw los txhim kho cov txheej txheem ntawm cov txheej txheem ntawm cov khoom siv dej tsis zoo ntawm cov txheej.
6. Txhim kho cov rheology ntawm cov txheej txheem
Daim ntawv thov ntawm hemc hauv cov yeeb nkab-raws li cov txheej txheem castings tuaj yeem txhim kho cov rheology ntawm txheej, muab nws zoo dua cov khoom siv. Tom qab ntxiv hemc rau cov ceem txhuas-raws li cov txheej txheem castings, fluating degreat, thiab ntau cov txheej txheej tsis xws luag tshwm sim los ntawm kev sib txawv los yog txheej txawv txawv lossis tsis sib xws.
7. Kev ua haujlwm ib puag ncig
Raws li ib tug polysaccharide derivative,Tus tseem ceeb muaj zoo biodegrentability thiab yog li ntawd muaj kev ua tau zoo heev. Nws tuaj yeem hloov cov khoom siv hluavtaws ntxiv thiab txo cov tshuaj tiv thaiv kab mob ua cov txheej txheem, yog li kev txhim kho cov txheej txheem ib puag ncig ntawm kev pleev xim cement. Rau cov khoom lag luam niaj hnub, kev tiv thaiv ib puag ncig tau ua rau muaj lub luag haujlwm zoo ntawm kev txhim kho kev tiv thaiv ib puag ncig ntawm cov txheej txheem ib puag ncig.
8. Txhim kho lub durability ntawm cov xim
Qhov sib ntxiv ntawm HEMC tuaj yeem txhim kho cov hnav tsis kam, huab cua tiv thaiv thiab UV tsis kam thiab UV tsis kam ntawm cov cement. Nws tuaj yeem qeeb cov teeb meem xws li fading thiab tawg ntawm cov casent-based txheej txheem tshwm sim los ntawm cov huab cua sab nraud xws li lub hnub qub thiab nag los, thiab txhim kho lub durability ntawm txheej. Qhov txiaj ntsig no yog tshwj xeeb rau kev tsim sab nrauv phab ntsa tsho uas raug rau sab nraud ib puag ncig rau lub sijhawm ntev thiab tuaj yeem txuas ntxiv txoj haujlwm lub neej ntawm txheej.
9. Txhim kho cov khoom siv tshuaj tua kab mob ntawm cov pleev cov khaub noom casent
Raws li kev noj qab haus huv thiab kev nyab xeeb rau cov ntaub ntawv cov khoom lag luam txuas ntxiv nce, cov tshuaj tiv thaiv kev tiv thaiv tiv thaiv kev ua haujlwm hauv cov txheej txheem tseem ceeb. HEMC nws tus kheej muaj qee cov tshuaj tua kabmob thiab tuaj yeem tiv thaiv kev loj hlob ntawm pwm thiab kab mob ntawm txheej txheej txheej. Hauv ib puag ncig nrog cov av noo, qhov sib ntxiv ntawm HEMC tuaj yeem pab cov txheej tiv thaiv cov yaig tiv thaiv cov pwm thiab fungi thiab ruaj khov ntawm txheej.
10. Txhim kho kev tsim kho kev tsim kho cov kev nyab xeeb ntawm cov tsoosent-based
Raws li cov tsis muaj tshuaj lom thiab tsis sib xws tshuaj, hemc muaj kev nyab xeeb siab. Thaum lub sij hawm tsim qauv,Tus tseem ceebPuas muaj kev phom sij rau tib neeg lub cev thiab txo qhov cuam tshuam rau kev noj qab haus huv ntawm cov neeg ua haujlwm tsim khoom. Tsis tas li ntawd, hemc tseem tuaj yeem txo qis cov hmoov av uas tsim muaj plua plav thaum lub sijhawm tsim kho, yog li kev txhim kho huab cua zoo ntawm kev tsim kho chaw.
Daim ntawv thov ntawmHydroxyethy MetylcelluloseHauv txoj kev cement-based txheej muaj ntau yam zoo. Nws tsis tuaj yeem tsuas txhim kho kev tsim kho cov kev tsim kho ntawm cov txheej, thiab txhim kho cov nplaum, thiab tseem txhim kho cov kab nrib pleb, thiab txhim kho cov kab nrib pleb, thiab txhim kho cov kab nrib pleb Ntxiv rau, hemc, raws li ib puag ncig phooj ywg thiab tsis muaj tshuaj ntxiv, tsis yog pab txhawb kev ua haujlwm ntawm ib puag ncig. Yog li ntawd, HemC tau siv dav hauv cov txheej txheem cement niaj hnub no thiab tau dhau los ua ib qho tseem ceeb hauv kev txhim kho txheej zoo thiab tsim kev ua haujlwm.
Lub Sijhawm Post: Nov-11-2024