Hydroxyethy cellulose (HEMC) yog CUG CUG ADMIXTE SIV SIV RAU HAUV CHAW UA HAUJ LWM. Nws yog dej-soluble polymer compound tau los ntawm kev hloov tshuaj lom neeg ntawm ntuj cog cellulose. Daim ntawv thov ntawm hemc hauv catural colp yog feem ntau los txhim kho kev ua haujlwm ntawm cug kev tshuaj khib nyiab los ntawm kev sib txig ntawm, viscosity, siv dej ua kom rov qab, thiab lwm yam).
1. Txhim kho cov kua dej ntawm xis mas cug
Raws li cov tuab dua, hemc tuaj yeem txhim kho fluidity ntawm kev tshuaj khib tom qab tau muab ntxiv rau cov cement cug. Nws cov kev ua tshuab ntawm kev nqis tes yog feem ntau kom nce kev lom zem ntawm Molecules sib txuas lus nrog kev sib xyaw ua ke ntawm cov xis nyob ntawm txoj kev sib xyaw ntawm cug. Thaum cov tshuaj khib nyiab zoo nkauj yog qhov zoo, nws tsis yog tsuas yog siv tau yooj yim thiab qib ua kom huv si ntawm cov xis ua haujlwm, thiab txhim kho kev ua haujlwm zoo thiab ua tau zoo.
2. Txhim kho cov viscosity ntawm cug
HEMC muaj cov dej solubility. Tom qab ntxiv hemc rau centen cort, viscosity ntawm cug cug yuav raug txhim kho. Cov viscosity ntau ntxiv pab txhim kho kev tsim kho ntawm cug, tshwj xeeb tshaj yog thaum tsim ntawm qhov chaw ntsug, kom tiv thaiv txoj kab ntsug los yog poob tawm. Tsis tas li ntawd, cov viscosity-nce kev cuam tshuam ntawm HEMC kuj tseem ua lub luag haujlwm zoo hauv kev txhim kho lub zog ntawm cov chaw siab lossis ib puag ncig kub ntawm kev ua haujlwm.
3. Txhim khu cov dej tuav tseg ntawm xis mas cug
Hemc tuaj yeem txhim kho cov dej khaws cia kom huv ntawm xis mas cug, uas yog qhov tseem ceeb ntawm nws cov ntawv thov feem ntau hauv kev tsim kho. Dej khaws cia yog ib qho khoom tseem ceeb ntawm cov cement cort uas ua rau dej los ntawm kev ua kom zoo los yog raug nqus thaum lub sijhawm tsim kho. Hemc ua cov yeeb yaj kiab tiv thaiv kom tiv thaiv kev ua kom qhuav ntawm cov paasas, yog li ncua kev ua kom huv si, thiab nce lub sijhawm ua kom huv si kom ntseeg tau.
4. Hloov cov yam ntxwv sib txawv rawv
Tom qab HEMC ntxiv rau cemal cort, rheological nkhaus qhia cov yam ntxwv ntawm cov kab cug hloov pauv nrog kev hloov ntawm shear tus nqi. Cov shear viscosity ntawm lub cug yog qhov siab, tab sis thaum tus nqi shear nce, lub clot qhia shear thenomenon. HEMC tuaj yeem hloov kho cov xeeb ceem zoo no, yog li ntawd lub tshuaj khib muaj cov viscosity ntau dua ntawm cov kev ruaj khov, kom muaj kev ruaj khov thaum lub sijhawm kev tsim kho; Thaum nyob ntawm tus nqi ntau dua, lub fluidity ntawm lub tshuaj khib yog txhim kho, txo lub tshuab hluav taws xob thaum kev tsim kho thaum kev tsim kho thaum lub tsev kho mob.
5. Txhim kho cov haujlwm ua haujlwm thiab muaj kev ruaj khov ntawm lub tshuaj khib
Lub luag haujlwm ntawm HEMC hauv Cug Cug HEMC, raws li lub stabilizer, tuaj yeem tswj cov hydration tus nqi ntawm cov tshuaj khib thiab tiv thaiv nws cov stratification, pedimentation thiab cais. Los kho tus nqi ntawm HEMC ntxiv, tus cug cug condable zoo li cas los tau ua tiav raws li kev sib txawv thiab qhuav ntawm hemc yog qhov pom tseeb.
6. Kev sib raug zoo ntawm tus nqi ntawm HEMC thiab kev ua tau zoo
Tus nqi ntawm HEMC yog ib qho ntawm cov ntsiab lus tseem ceeb uas cuam tshuam rau rheological cov khoom ntawm cement cug. Feem ntau hais lus, qhov ntau dua cov lus qhia ntxiv, cov nyhuv tshaj nws cov nyhuv tshaj qhov kev txhim kho rheological yam ntxwv yog, tab sis kuj tseem muaj qee qhov kev txwv. Kev sib txuas ntau dhau ntawm HEMC yuav ua rau muaj viscosity ntau dhau ntawm cug, uas yuav cuam tshuam rau lub smoothness ntawm kev tsim kho. Yog li ntawd, hauv kev siv cov ntawv thov, nws yog qhov tsim nyog los kho tus nqi ntawm HEMC raws li kev siv hluav taws xob thiab kev tsim kho ntawm cov tshuaj khib.
7. Cov nyhuv ntawm HEMC ntawm cugas cug tom qab ua kom tawv
Thaum lub sij hawm ua kom tawv nqaij tawv ntawm xis qab zib, lub luag haujlwm ntawm hemc tseem muaj. Txawm hais tias HEMC tsis tuaj yeem koom nrog txoj kev nyiam ua cov paasent, nws tuaj yeem ua ncaj qha rau kev txhim kho cov dej sib tov ntawm cov xis mas. Piv txwv li, hemc tuaj yeem ncua cov txheej txheem ntawm kev ua kom muaj dej xis mas, yog li txhawb nqa lub zog compressive compressive compressive compressive compressive compressive compressive compressive lub zog. Tshuaj khib tau kho nrog tus nqi tsim nyog ntawm HEMC feem ntau muaj zog compressive compressive lub zog thiab tiv thaiv tsim nyog rau kev tsim kho lub sijhawm.
Raws li qhov tseem ceeb ntxiv rau cov xis qab zib, hydroxyethy lub zog, hemc) ua kom muaj kev sib zog, viscosity thiab kev ua haujlwm ruaj khov ntawm cug. HEMC tuaj yeem txhim kho cov tshuaj khib nyiab, txhim kho kev ua haujlwm, txhim kho kev ruaj khov ntawm xis thiab txhim kho kev ua haujlwm ntawm cug. Txawm li cas los xij, tus nqi ntawm HEMC yuav tsum tau ua kom meej kom ntseeg tau tias cov kab hlau zoo tshaj plaws thaum ua haujlwm ua haujlwm tshwm sim los ntawm kev ntxiv mus ntxiv. Yog li ntawd, hauv kev siv tswv yim, tus nqi ntawm HEMC ntxiv yuav tsum tau tsim kho kho raws li kev tsim kho cov mob thiab cov cai muab tag nrho rau nws lub luag haujlwm.
Lub Sijhawm Post: Feb-21-2025