Kev tsom xam ntawm cov khoom thiab cov yam ntxwv tseem ceeb ntawm cov roj teeb lithium

Kev tsim cov roj ntsha lithium-ion yog cov kab ke sib txuas ntawm cov txheej txheem theem. Feem ntau hais lus, kev lag luam ntawm cov roj teeb lithium suav nrog ncej cov txheej txheem tsim cov txheej txheem, cov roj teeb sib dhos cov txheej txheem thiab cov kua dej ua tiav zaum kawg, ua ntej them, tsim thiab txheej txheem kev laus. Hauv cov txheej txheem peb-theem, txhua tus txheej txheem muaj peev xwm raug faib ua ntau cov txheej txheem tseem ceeb, thiab txhua kauj ruam yuav muaj qhov cuam tshuam zoo rau kev ua tiav kawg ntawm lub roj teeb.

Hauv tus ncej daim tsim cov txheej txheem, nws tuaj yeem ua tiav rau tsib txheej txheem: npaj slurry, slurry txheej, ncej thooj dov, ncej thooj txiav, thiab ncej thooj kom qhuav. Hauv cov roj teeb ua ke txheej txheem, raws li cov roj teeb sib txawv, nws muaj peev xwm muab ntxaib faib ua winding, casing, vuam thiab lwm cov txheej txheem. Thaum kawg ua kua txhaj theem, ntau cov txheej txheem xws li kev txhaj tshuaj ua kua, tso pa tawm, ntim khi, npaj ua ntej, tsim thiab laus thiab suav nrog. Cov ncej thooj ua cov txheej txheem yog cov ntsiab lus tseem ceeb ntawm txhua lub roj teeb lithium, uas cuam tshuam txog qhov zoo ntawm kev ua haujlwm ntawm lub roj hluav taws xob, thiab qhov zoo ntawm cov nplais yog qhov tseem ceeb.

1. Siv cov ntsiab lus ntawm slurry

Lithium-ion battery electrode slurry yog ib hom kua dej. Feem ntau, kua yuav muab faib ua Newtonian kua thiab kua tsis muaj Newtonian. Ntawm lawv, cov kua dej uas tsis yog Newtonian tuaj yeem muab faib ua cov kua dej ntawm cov kua dej, lub sijhawm ua kua tsis muaj Newtonian, kua dej pseudoplastic thiab kua dej ntawm Bingham yas. Cov kua dej Newtonian yog cov kua viscosity qes uas qhov yooj yim kom deform tom qab ntxhov siab, thiab cov kev ntxhov siab shear yog sib npaug rau tus nqi ntawm deformation. Cov kua dej uas shear ntxhov siab nyob rau txhua kis tau muaj txoj kab sib luag ua haujlwm nrog tus shear deformation tus nqi. Ntau cov kua hauv qhov xwm yog kua Newtonian. Feem ntau cov kua dej ntshiab xws li dej thiab cawv, cov roj teeb, cov roj nyeem tsawg, thiab lub roj ntws khiav ceev tsawg yog cov kua dej Newtonian.

Cov kua nruab nrab tsis yog Newtonian xa mus rau cov kua hauv lub cev uas tsis txaus siab rau Newton cov kev cai lij choj ntawm viscosity, uas yog, kua uas nws cov kev ntxhov siab ntxhov siab thiab shear strain tus nqi tsis tawm. Cov kua hluav taws xob tsis yog Newtonian muaj nyob rau hauv lub neej, ntau lawm thiab xwm. Cov tshuaj daws teeb meem thiab kev ncua ntawm cov siab cov kua roj polymers feem ntau tsis yog Newtonian kua. Cov kua nruab nrog cev feem ntau nrog rau cov kua uas tsis yog Newtonian tam sim no tau txhais. Tib neeg lub cev hauv lub cev xws li ntshav, lymph, cyst kua, thiab" dej ib nrab" zoo li cytoplasm yog txhua yam tsis yog Newtonian kua.

Electrode slurry yog muaj li ntawm cov khoom siv sib txawv nrog cov sib txawv tshwj xeeb thiab qhov sib txawv me me, thiab tau sib xyaw thiab tawg rau hauv cov txheej txheem ua kua. Lub txiaj ntsig ua rau lub ntsej muag yog cov kua dej uas tsis yog Newtonian. Lithium roj teeb slurry tuaj yeem faib ua ob hom: zoo electrode slurry thiab qhov tsis zoo electrode slurry. Vim cov tshuab slurry sib txawv (roj thiab dej raws li), lawv cov yam ntxwv yuav txawv heev. Txawm li cas los xij, kev txiav txim plaub lub zog ntawm cov slurry yog tsis muaj dab tsi ntau tshaj li cov hauv qab no:

1. Lub viscosity ntawm slurry

Viscosity yog ib qho kev ntsuas ntawm cov kua viscosity thiab ib qho kev qhia ntawm lub zog ntws quab yuam rau nws sab hauv kev sib txhuam. Thaum cov kua ntws tawm, cov cuab yeej ntawm sab hauv kev sib txhuam los ntawm nws cov lwg me hu ua qhov viscosity ntawm cov kua. Lub viscosity yog qhia los ntawm viscosity, uas yog siv los ua cov yam ntxwv tsis kam cuam tshuam txog cov yam ntxwv ntawm cov kua. Viscosity tau muab faib ua dynamic viscosity thiab viscosity muaj cai.

Viscosity txhais tau tias yog khub khub daim paib loj nrog thaj chaw ntawm A thiab qhov deb ntawm dr. Cov phiaj ntim tau sau nrog ib cov kua. Tam sim no lub zog qaij F yog thov rau lub phaj siab sab saud los tsim kom tau nrawm hloov du. Vim tias qhov viscosity ntawm cov kua hloov mus rau lub zog no txheej los ntawm txheej, txhua txheej ntawm cov kua kuj txav mus raws li, tsim cov kab nrawm du / dr, hu ua tus nqi shear, uas yog sawv cev los ntawm r'. F / A hu ua kev ntxhov siab shear thiab yog sawv cev los ntawm τ. Kev sib raug zoo ntawm tus nqi shear thiab shear kev ntxhov siab yog raws li hauv qab no:

(F / A)=η (du / dr)

Newtonian kua haum rau Newton' s mis. Lub viscosity tsuas yog cuam tshuam nrog qhov kub thiab tsis muaj dab tsi ua rau shear tus nqi. τ yog sib npaug rau D.

Cov kua dej uas tsis yog Newtonian tsis yoog raws li Newtonian tus qauv τ / D=f (D), thiab representsa sawv cev viscosity hauv qab ntawm qee yam (τ / D), uas yog hu ua pom viscosity. Ntxiv nrog rau qhov kub thiab txias, qhov viscosity ntawm cov dej tsis yog Newtonian kuj tseem muaj feem xyuam nrog tus nqi shear, lub sijhawm, thiab kev hloov pauv ntawm shear thinning lossis shear thickening.

2. Cov khoom qeeb

Lub slurry yog cov-tsis yog Newtonian kua, ua kua-kua sib xyaw ua kua. Txhawm rau kom ua tau raws li qhov yuav tsum ua ntawm txheej txheej tom ntej, cov neeg slurry yuav tsum muaj peb yam ntxwv li nram no:

Liquid Zoo liquidity. Lub fluidity tuaj yeem pom los ntawm kev nplawm lub slurry kom nws ntws ntws ib txwm. Kev sib txuas kom zoo tas mus li, kev sib cav sib ceg tsis tu ncua, qhia tau tias cov khoom siv tau zoo. Kev npliag yog cuam tshuam nrog cov ntsiab lus thiab viscosity ntawm slurry,

Qhov siab. Cov theem ntawm cov slurry muaj feem xyuam rau lub tiaj thiab kev sib txawv ntawm txheej.

He Rheology. Rheology yog hais txog lub deformation yam ntxwv ntawm cov slurry hauv qhov khiav, thiab nws cov khoom zoo cuam tshuam rau qhov zoo ntawm ncej thooj.

3. Lub hauv paus ntawm slurry dispersion

Hauv kev tsim hluav taws xob rau cov roj ntsha lithium-ion, cov hluav taws xob zoo electrode yog cov khoom sawv cev, tus neeg sawv cev ntawm cov khoom, thiab cov khoom siv electrode zoo; Qhov tsis zoo electrode slurry yog muaj li ntawm phau ntawv sau, graphite carbon hmoov, etc. yog nrog los ntawm kev hloov pauv ntawm qhov kub, viscosity, thiab ib puag ncig. Cov kev sib xyaw thiab kev faib tawm ntawm cov roj ntsha lithium-ion roj teeb tuaj yeem muab faib ua cov txheej txheem sib xyaw ua ke thiab cov txheej txheem micro-dispersion. Cov txheej txheem ob no yuav ib txwm nrog tus txheej txheem tag nrho ntawm kev npaj cov lithium-ion roj teeb slurry. Kev npaj ntawm slurry feem ntau mus raws theem hauv qab no:

. Sib xyaw hmoov qhuav. Cov xaim tau nyob sib txuas nrog txhua tus hauv daim ntawv ntawm dots, dots, thiab dots,

Stage Semi-qhuav av nkos nyob rau theem. Nyob rau theem no, tom qab cov hmoov qhuav yog tusyees sib xyaw, cov kua sawv los yog cov kuab tshuaj ntxiv, thiab cov khoom siv raw tau ntub thiab av nkos. Tom qab qhov muaj zog nplawm ntawm cov khoom tov, cov khoom siv tau sheared thiab txhuam los ntawm kev siv tshuab, thiab yuav muaj kev sib txhuam sab hauv ntawm cov lus. Nyob rau hauv ntau lub zog, cov khoom siv raw khoom ib txwm muaj peev xwm heev dispersed. Qeb no tau txais lub luag haujlwm tseem ceeb rau ntawm qhov me me thiab qhov pom ntawm cov slurry tiav.

Dilution thiab dispersion theem. Tom qab kneading tiav, qhov kuab tshuaj maj mam ntxiv los kho cov slurry viscosity thiab cov ntsiab lus tsis zoo. Nyob rau theem no, kev sib cais thiab rov sib koom ua ke, thiab thaum kawg mus txog qhov kawg ruaj khov. Nyob rau qib no, cov khoom tawg yooj yim yog cuam tshuam los ntawm kev siv tshuab, kev sib txhuam tsis sib haum ntawm hmoov thiab kua, qhov siab ceev dispersion shear quab yuam, thiab kev sib cuam tshuam ntawm kev sib tsoo thiab lub thawv ntim.

2. Tshawb xyuas qhov tsis zoo cuam tshuam rau cov khoom ntawm slurry

Cov nplais tom qab sib tov yuav tsum muaj qhov chaw ruaj khov, uas yog qhov ntsuas tseem ceeb kom paub tseeb tias cov roj teeb sib txig sib luag hauv cov txheej txheem tsim roj teeb. Raws li kev sib xyaw ntawm cov slurry xaus thiab cov nplawm nres, cov slurry yuav daws, flocculate thiab coalesce, uas ua rau muaj qhov loj me, uas yuav muaj kev cuam tshuam ntau dua rau txheej txheej tom qab thiab lwm cov txheej txheem. Lub ntsiab tsis tseem ceeb uas cim qhov kev ruaj ntseg ntawm cov nplais yog fluidity, viscosity, cov ntsiab lus tsis txaus, ntom thiab lwm yam.

1. Lub viscosity ntawm slurry

Cov electrode slurry xav kom muaj kev ruaj khov thiab tsim nyog viscosity, uas muaj lub zog tseem ceeb rau cov txheej txheem electrode daim txheej txheej. Yog tias qhov viscosity ntau dhau lossis dhau tsawg, nws tsis yog qhov tsim nyog rau txheej los ntawm cov ntawv txuas. Lub siab viscosity slurry tsis yooj yim rau nag lossis daus thiab qhov kev faib tawm yuav zoo dua, tab sis cov viscosity siab dhau heev tsis zoo rau cov nyhuv qib thiab txheej; lub viscosity tsawg dhau Nws tseem tsis zoo. Txawm hais tias cov lus tso tawm tau zoo fluidity thaum viscosity tsawg, nws tsis yooj yim kom qhuav, uas txo cov kev ua kom qhuav ntawm txheej, thiab cov teeb meem xws li txheej tawg, slurry particle agglomeration, thiab qhov tsis zoo ntawm qhov ntom ntom ntom ua ke yuav tshwm sim.

Cov teeb meem uas feem ntau tshwm sim hauv peb cov txheej txheem ntau lawm yog tias viscosity hloov, thiab" hloov" ntawm no tuaj yeem faib ua kev hloov pauv sai thiab zoo li qub kev hloov pauv. Kev hloov sai yog hais txog qhov hloov pauv ntawm qhov nruab nrab ntawm cov txheej txheem kev ntsuas viscosity, thiab kev hloov pauv zoo li qub yog hais txog kev hloov pauv ntawm viscosity ntawm cov slurry tom qab ib lub sijhawm. Qhov kev hloov ntawm viscosity yog siab lossis qis, lossis qee zaum siab thiab qee zaum qis. Feem ntau hais lus, yam tseem ceeb uas cuam tshuam rau lub viscosity ntawm slurry feem ntau suav nrog kev ceev nrawm ntawm kev nrawm, kev tswj lub sijhawm, kev sib tsoo ntu, ib puag ncig kub thiab cov av noo, thiab lwm yam. Muaj ntau ntau yam, peb yuav tsum txheeb xyuas thiab daws nws thaum peb ntsib viscosity. hloov? Lub viscosity ntawm slurry yog qhov tseem ceeb cuam tshuam los ntawm phau ntawv. Piv txwv, yog tias tsis muaj cov nplaum PVDF / CMC / SBR (zoo li hauv daim duab 2 thiab 3), lossis cov nplaum tsis sib txuas ntawm cov khoom nquag, yuav yog cov khoom nquag nquag thiab tus neeg sawv cev ua cov ntawv tsis ua rau Newtonian kua nrog cov teeb meem txheej? ? yuav tsis! Yog li, txhawm rau txhawm rau txheeb xyuas thiab daws qhov laj thawj ntawm kev hloov pauv ntawm slurry viscosity, peb yuav tsum pib ntawm qhov xwm txheej ntawm cov kab thiab qhov degree ntawm slurry dispersion.

Daim duab 2. PVDF qauv txheej txheem molecular

Daim duab 3. CMC qauv qog

(1) Muaj viscosity ntau ntxiv

Lub cav sib txawv muaj cov viscosity sib txawv. Lub tshuab hluav taws xob tshiab tam sim no yog qhov zoo electrode slurry PVDF / NMP oily system, thiab qhov tsis zoo electrode slurry yog graphite / CMC / SBR aqueous system.

Lub viscosity ntawm qhov zoo electrode slurry nce tom qab tau ncaim mus rau ib lub sijhawm. Ib qho ntawm cov laj thawj (lub sijhawm luv luv-cia) yog tias cov slurry nplawm nrawm nrawm nrawm dua thiab cov ntawv khi tsis tau tag nrho. Tom qab ib lub sijhawm, PVDF hmoov yog tag nrho yaj thiab viscosity nce ntxiv. Feem ntau hais lus, PVDF xav tau tsawg kawg 3 teev yuav yaj tag, tsis hais txog qhov nrawm nrawm nrawm tsis tuaj yeem hloov tau qhov kev cuam tshuam no, qhov" nrawm tsis nrawm nrawm" ;. Qhov laj thawj thib ob (lub sijhawm ntev cia) yog qhov colloid pauv los ntawm lub xeev huab mus rau lub xeev gel thaum lub slurry tseem sawv. Yog tias nws yog homogenized ntawm lub qeeb ceev, nws cov viscosity tuaj yeem hloov kho dua. Qhov thib peb yog vim li cas tus qauv tshwj xeeb yog tsim nyob nruab nrab ntawm cov colloid, cov khoom muaj sia, thiab tus neeg saib xyuas cov conductive hais. Lub xeev no rov qab tsis tau thiab tsis tuaj yeem rov ua kom zoo dua tom qab cov yeeb yaj npau suav pom ntxiv.

② Cov viscosity ntawm qhov tsis zoo electrode slurry nce. Qhov nce ntawm viscosity ntawm qhov tsis zoo electrode slurry feem ntau yog los ntawm kev puas tsuaj ntawm cov qauv molecular ntawm phau ntawv. Lub viscosity ntawm cov slurry nce ntxiv tom qab lub zog molecular saw tau tawg thiab oxidized. Yog hais tias cov ntaub ntawv dhau mus dhau-tawg, qhov loj me me yuav raug txo kom tsawg, uas tseem yuav ntxiv qhov viscosity ntawm slurry.

(2) Tsawg viscosity

Qhov viscosity ntawm qhov zoo electrode slurry txo. Ib qho ntawm cov laj thawj yog tias cov khoom ntawm cov nplaum colloid tau hloov. Muaj ntau lub laj thawj rau kev hloov pauv, xws li muaj zog shearing quab yuam thaum lub zog hloov txheej txheem, qhov tsim nyog hloov vim lub cev noo noo los ntawm lub binder, kev hloov pauv hloov txheej txheem thaum lub sij hawm nplawm, thiab poob ntawm nws tus kheej. Qhov laj thawj thib ob yog tias kev sib xyaw tsis sib xyaw thiab kev sib cais ua rau cov khoom sib txawv hauv cov slurry los khom hauv thaj chaw loj. Qhov laj thawj thib peb yog qhov nplaum tau raug rau qhov muaj zog shear thiab kev sib txhuam los ntawm cov cuab yeej siv thiab cov ntaub ntawv nyob thaum lub sijhawm txheej txheem nplawm, thiab nws cov khoom tau hloov pauv nyob hauv qab qhov kub kub, uas ua rau txo viscosity.

② Cov viscosity ntawm qhov tsis zoo electrode slurry txo. Ib qho ntawm cov laj thawj yog tias CMC muaj impurities. Feem ntau ntawm cov impurities hauv CMC tsis zoo yog cov soluble polymer cob. Thaum CMC yog miscible nrog calcium, magnesium, thiab lwm yam., Nws cov viscosity yuav raug txo kom tsawg. Qhov laj thawj thib ob yog tias CMC yog sodium hydroxymethyl cellulose, uas feem ntau yog kev sib xyaw ntawm C / O. Qhov kev sib khi yog qhov muag tsis muaj zog thiab yooj yim los ntawm shearing quab yuam. Thaum lub nplawm qhov kev nrawm nrawm dhau lossis lub sijhawm ntev dhau lawm, cov qauv ntawm CMC yuav raug rhuav tshem. CMC lub luag haujlwm ua kom tuab thiab ruaj khov kho qhov tsis zoo electrode slurry, thiab tib lub sijhawm nws ua lub luag haujlwm tseem ceeb hauv kev tawg ntawm cov khoom nyoos. Thaum nws cov qauv raug puas ntsoog, nws yuav ua rau muaj kev npau taws me ntsis los daws thiab txo nws cov viscosity. Qhov laj thawj thib peb yog qhov kev rhuav tshem SBR nplaum. Hauv kev ua yeeb yam tiag tiag, CMC thiab SBR feem ntau raug xaiv los ua haujlwm ua ke, thiab lub luag haujlwm ntawm ob yog txawv. SBR tsuas yog ua raws li phau ntawv qhia, tab sis nws nquag cuam tshuam nyob rau hauv kev ncua ntev, uas ua rau tsis ua hauj lwm thiab txo qis ntawm cov viscosity.

(3) Cov xwm txheej tshwj xeeb (cov qauv zoo li jelly yog siab thiab qee zaum tsawg)

Thaum lub sijhawm npaj ntawm qhov zoo electrode slurry, qee zaum cov slurry tiav los" jelly" ;. Muaj ob qho laj thawj rau qhov xwm txheej no: Ua ntej, noo noo. Xav txog tias kev ya raws kev nqus ntawm cov khoom siv nyob, tswj cov dej noo tsis zoo thaum lub sijhawm sib xyaw, thiab cov av noo siab ntawm cov khoom siv tom qab cov khoom siv nqus kom ya raws lossis qhov chaw sib tov yuav ua rau PVDF nqus dej noo thiab ua jelly. Thib ob, pH tus nqi ntawm slurry lossis khoom. Qhov siab dua pH tus nqi, qhov kev txwv tsis pub tswj hwm kev ya raws, tshwj xeeb tshaj yog nplawm siab ntawm cov khoom siv nickel siab xws li NCA thiab NCM811.

Lub viscosity ntawm lub slurry fluctuates siab thiab qis. Ib qho ntawm cov laj thawj yuav yog hais tias lub slurry tsis ruaj khov thaum lub sijhawm kuaj cov txheej txheem, thiab slurry viscosity zoo heev cuam tshuam los ntawm qhov kub thiab txias. Tshwj xeeb tshaj yog tom qab tawg ntawm qhov kub ceev, qhov kub ntawm sab hauv ntawm slurry muaj qee qhov ntsuas kub ntawm qhov kub, thiab qhov sib txawv viscosities ntawm cov qauv tsis zoo ib yam. Qhov laj thawj thib ob yog tias cov kev sib cais ntawm cov zaub mov tsis zoo, cov khoom siv nquag, kev khi thiab cov neeg ua haujlwm tsis zoo dispersed, lub slurry tsis muaj qhov tsis zoo, thiab cov viscosity ntawm lub ntuj slurry fluctuates siab thiab qis.

2. Qhov loj ntawm slurry

Tom qab sib tov, qhov loj me me yuav tsum tau ntsuas. Cov txheej txheem ntawm particle loj ntsuas feem ntau adopts scraper txoj kev. Lub particle loj yog qhov tseem ceeb rau qhov ntsuas qhov zoo ntawm cov slurry. Lub particle loj tau muaj qhov tseem ceeb ntawm cov txheej txheem, yob cov txheej txheem thiab cov roj teeb ua haujlwm. Raws li kev tshawb xav, qhov me dua cov slurry particle qhov loj me, qhov zoo dua. Thaum cov particle loj dhau lawm, qhov kev nyab xeeb ntawm cov slurry yuav raug cuam tshuam, ua rau muaj kev sib xyaw thiab tsis zoo ntawm cov slurry. Nyob rau hauv txheej txheej txheej txheej txheej txheej, yuav muaj cov khoom thaiv, pitting tom qab ziab ntawm tus ncej thooj, uas ua rau kom zoo ntawm cov thooj daim hlau. Hauv cov txheej txheem dov tom ntej, lub zog tsis sib haum ntawm cov txheej tsis zoo tuaj yeem yooj yim ua rau tus ncej tawg thiab cov microcracks hauv zos, uas ua rau muaj kev cuam tshuam loj heev rau kev ua haujlwm ntawm kev voj voog, kev ua tau zoo thiab kev nyab xeeb ntawm lub roj teeb.

Cov ntaub ntawv tseem ceeb xws li cov ntaub ntawv muaj txiaj ntsig zoo thiab tsis zoo, kev ua kom ruaj khov, tus neeg sawv cev, thiab lwm yam muaj qhov sib txawv thiab ntau qhov sib txawv, thiab ntau txoj hauv kev sib cuag xws li sib xyaw, nyem, txhuam, thiab agglomeration yuav tshwm sim thaum lub sij hawm nplawm. Hauv cov theem ntawm cov khoom nyoos tau maj mam tov, ntub los ntawm cov kuab tshuaj, loj ntawm cov khoom tawg thiab maj mam ruaj khov, yuav muaj cov khoom sib tov tsis sib xws, tsis zoo ntawm cov nplaum, qhov tsis zoo ntawm cov nplaim hluav taws, thiab tshwm sim ntawm cov khoom nplaum. Hloov pauv, thiab lwm yam, yuav ua rau cov khoom loj ntawm cov khoom loj.

Thaum peb to taub qhov ua rau muaj feem, peb yuav tsum sau cov tshuaj kom yog los daws cov teeb meem no. Hais txog cov hmoov qhuav hmoov sib tov ntawm cov ntaub ntawv, Kuv tus kheej xav tias qhov ceev ntawm lub tshuab tov muaj cov nyhuv me me ntawm cov neeg kawm ntawv ntawm cov hmoov qhuav sib tov, tab sis ob qho xav tau sijhawm txaus los xyuas kom cov hmoov qhuav sib tov. Tam sim no qee cov tuam ntxhab xaiv cov hmoov txhuam cov kua nplaum thiab qee qhov xaiv cov kua-yaj ua kua nplaum. Ob qhov sib txawv nplaum txiav txim siab sib txawv ntawm cov txheej txheem. Kev siv cov hmoov txhuam cov nplaum siv sijhawm ntev dua kom yaj, txwv tsis pub Nqa rov qab, rov ua dua, viscosity hloov, thiab lwm yam yuav tshwm sim nyob rau theem tom ntej. Agglomeration ntawm cov nplai zoo yog kev tsis tuaj yeem, tab sis peb yuav tsum xyuas kom muaj kev sib txhuam kom txaus ntawm cov khoom siv los txhawb cov extrusion thiab crushing ntawm cov agglomerated hais, uas yog cov txiaj ntsig zoo rau kev sib xyaw. Qhov no xav kom peb tswj cov ntsiab lus ntawm cov slurry ntawm ntau qib. Cov ntsiab lus tsawg dhau yuav cuam tshuam rau kev sib txhuam thiab kev xa tawm ntawm cov khoom.

3. Cov ntsiab lus tseem ceeb ntawm cov slurry

Cov ntsiab lus cov ntsiab lus ntawm slurry yog ze ze rau kev ruaj khov ntawm cov slurry. Nrog tib cov txheej txheem thiab cov qauv mis, cov ntsiab lus ntau dua ntawm cov slurry, ntau dua qhov viscosity, thiab rov hais dua. Nyob rau hauv qee qhov kev ntsuas, qhov ntau dua ntawm qhov viscosity, lub siab dua ntawm slurry stability. Thaum peb tsim cov roj teeb, peb feem ntau thim qhov tuab ntawm qhov tseem ceeb ntawm lub roj teeb muaj peev xwm mus tsim ntawm tus ncej thooj. Tom qab ntawd cov ncej daim qauv tsim tsuas yog cuam tshuam rau cov tsis xws li cov ntom hluav taws xob, cov khoom siv nquag, thiab tuab. Cov txwv ntawm tus ncej daim yog kho los ntawm lub tshuab txheej thiab cov menyuam khawm, thiab cov ntsiab lus ntawm cov slurry tsis muaj qhov cuam tshuam ncaj qha rau nws. Yog li, puas yog cov ntsiab lus tsis tseeb ntawm qhov kev xav tsis zoo?

(1) Cov ntsiab lus muaj zog muaj qee qhov ntxim rau kev txhim kho kev sib xyaw ua kom zoo thiab txheej ua kom zoo. Cov ntsiab lus ntau dua cov khoom siv, cov luv luv slurry nplawm lub sijhawm, cov kuab tshuaj tsawg dua, ntau dua qhov ua kom cov xim kom qhuav, thiab txuag lub sijhawm.

(2) Cov ntsiab lus tawv muaj qee qhov xav tau ntawm cov khoom siv. Lub zog cov ntsiab lus slurry muaj qhov ua rau cov khoom siv poob qis dua, vim tias cov ntsiab lus siab dua, cov khoom siv hnav hnyav dua.

(3) Cov slurry uas muaj cov ntsiab lus siab tau muaj kev ruaj khov siab dua. Qee qhov kev ntsuas ntawm qhov ua kom qhov siab ruaj khov qhia (raws li pom hauv daim duab hauv qab no) tias TSI (qhov ntsuas tsis zoo) 1.05 ntawm cov pa sib xyaw ua ke yog siab dua tus nqi TSI ntawm 0.75 nyob rau hauv qhov siab viscosity nplawm cov txheej txheem, yog li kev ruaj khov ntawm cov slurry tau los ntawm lub siab -viscosity mixing txheej txheem yog zoo dua li cov txheej txheem sib xyaw ua ke. Txawm li cas los xij, lub siab cov ntsiab lus slurry tseem yuav cuam tshuam nws cov fluidity, uas yog qhov nyuaj rau cov khoom siv thiab cov kws tshaj lij ntawm cov txheej txheem.

(4) Cov dej khov ua cov ntsiab lus tuaj yeem tuaj yeem txo cov tuab ntawm txheej txheej thiab txo qhov kev kho mob sab hauv ntawm lub roj teeb.

4. Paste ntom

Qhov ntom ntawm cov slurry yog qhov tseem ceeb rau qhov sib xws ntawm cov tshuaj tiv thaiv slurry, thiab cov khoom tawg ntawm cov slurry tuaj yeem kuaj xyuas los ntawm kev ntsuas qhov ceev ntawm cov slurry ntawm ntau cov haujlwm. Kuv yuav tsis nkag mus rau cov ntsiab lus ntawm no, thiab dhau los ntawm cov ntsiab lus saum toj no, kuv ntseeg tias txhua tus neeg tuaj yeem npaj tau cov roj hluav taws xob zoo.