Cov duab ntawm extrusion txheej gasket yog qhov zoo rau daws qhov tshwm sim ntawm tuab ntug ntawm tus ncej thooj

Txoj kev siv lub tshuab rho tawm txheej txheej yog kev siv tshuab ua kom txheej siab ua ntej. Thaum lub sij hawm txheej txheem, tag nrho cov kua ua kua rau hauv lub qhov tuag tuag ua ib txheej pleev xim rau ntawm txheej. Yog li, qhov saum npoo ntawm cov txheej ntub dej tuaj yeem tswj tau qhov tseeb los ntawm kev hloov pauv cov khoom noj qeeb qeeb thiab txheej ceev. Cov txheej txheem txheej txheem muaj nyob hauv Daim Duab 1. Ib co kev ntws ntawm slurry nkag mus rau sab hauv kab noj hniav ntawm qhov tuag los ntawm qhov chaw nres nkoj pub ntawm lub taub hau extrusion thiab ua rau lub zog ruaj khov. Lub slurry thaum kawg tau tawm ntawm lub qhov hluav taws xob tuag ntawm qhov tuag thiab coated rau ntawm ntawv ci. Ntawm cov khoom siv, txheej tau qhuav nyob hauv qhov cub.

Thaum lub sij hawm txheej txheem txheej, vim yog cov yam ntxwv ua kua ntawm lub slurry, nws yog qhov yooj yim los ua ib qho zoo li ib nrab hli-hli uas muaj nyob hauv FIG. Thaum lub sij hawm txheej txheem txheej, cov tsos tshwm ntawm cov nce sai ntawm cov npoo ntawm ntug tus ncej yog hu ua" tuab ntug" qhov tshwm sim. Qhov laj kab tuab no yog qhov tsis xav tau, thiab yuav ua teeb meem rau cov txheej txheem roj teeb thiab kev ua haujlwm ntawm lub roj teeb thiab ua kom sib xws.

Hais txog cov yam ntxwv ntws ntawm cov txheej txheej extrusion thiab qhov tshwm sim tuab ntawm txheej txheej, qhov tsab xov xwm tau luam tawm ua ntej los sau txog cov ntsiab lus tseem ceeb nyeem raws li hauv qab no:

(1) Txheeb xyuas qhov ntws tawm ntawm cov yam ntxwv ntawm slit extrusion txheej rau lithium-ion roj teeb ncej daim

(2) Extrusion txheej tuab ntug qhov tshwm sim ntawm lithium roj teeb ncej daim thiab cov kev daws teeb meem

Cov txheej txheem ntawm cov roj ntsha lithium-ion roj teeb daim feem ntau yuav tsum tau tsim cov khoom sib txig sib txig sib txuas daim, uas yog qhov tseem ceeb los ntawm kev tsim cov channel ntws los ntawm lub gasket tsau nruab nrab ntawm cov qaum thiab qis tuag lub taub hau, yog li kom paub qhov kev npaj ntawm sawb -shaped txheej (raws li qhia nyob hauv daim duab 2). Cov duab ntawm lub gasket muaj feem cuam tshuam rau kev faib tawm ntawm cov kua dej hauv qhov tuag, thiab thaum kawg cuam tshuam rau morphology ntawm lo, tshwj xeeb tshaj yog morphology ntawm txheej xim. Txhim kho lub qhov hluav taws xob zoo ntawm lub pob hluav taws xob tuaj yeem hloov qhov kev taw qhia thiab qhov loj ntawm cov slurry ntws nrawm, txo qhov kev ntxhov siab ntawm lub ntug slurry, thiab ua kom tsis muaj zog lossis tshem tawm qhov tuab tshwm sim ntawm txheej txheej. Kev tsim kho kom zoo ntawm daim duab gasket hauv qhov piv txwv ntawm tsab xov xwm no qhia txog kev daws cov tshwm sim ntawm tuab tuab ntawm cov thooj.

Gui Hua Han li al. tsim qauv plaub hom gasket duab. Siv kev sib txuas ntawm lub computer simulation thiab sim, coj Newtonian kua ua piv txwv, lawv kawm txog cov nyhuv ntawm gasket cov duab ntawm cov nplais sib kis tau faib ntawm qhov hluav taws xob tuag thiab lub qhov rai xim txheej. Hauv kev kawm, tsuas yog cov duab ua kom zoo dua nruab nrab ntawm qhov nruab nrab ntawm qhov gasket tau txiav txim siab (Daim Duab 2). Cov khiav sab hauv sib haum rau plaub qhov kev sib tw gasket muaj nyob hauv Daim Duab 3:

case1: Qhov dav qhov ntev ntawm lub gasket tseem tsis pauv ntawm 10 hli, thiab qhov sib txawv ntawm txhua qhov channel ntws tsis hloov ntawm 20mm;

case2: Qhov dav ntawm lub gasket tau nthuav dav los ntawm 5mm mus rau 10mm ze ntawm qhov tawm thiab tom qab ntawv tswj kev nthuav dav;

case3: Qhov dav ntawm lub gasket ncaj qha nthuav tawm 5mm mus rau 10mm ntawm qhov tawm;

Case4: Qhov dav ntawm lub gasket raug txo los ntawm 15mm mus rau 10mm ze ntawm lub qhov hluav taws xob thiab tom qab ntawd tswj qhov nruab nrab ntawm txoj siv dav.

Cov kua tshuaj sim yog glycerin aqueous tov (80:20, wt%), nrog viscosity ntawm 0.045 Pa ∙ s, qhov nro ntawm 0.066 N / m, thiab qhov ntom ntawm 1210kg / m3.

Daim duab 4 qhia txog kev faib tawm ntawm plaub yam tshwj xeeb ntawm gaskets ntawm qhov tuag tawm raws qhov tuag qhov kev taw qhia tau los ntawm lub computer simulation:

case1: Qhov khiav ntawm qhov khiav tseem tsis hloov, thiab qhov ceev ntawm qhov kev taw qhia dav thaum lub qhov rooj tawm tuag yog qhov sib npaug;

case2: Thaum lub gasket nthuav dav, cov dej ntws ntws tsawg, thiab lub nrawm ntawm cov kua dej nce ntawm ntug qhov nruab nrab ntawm qhov tuag;

case3: Thaum lub gasket nthuav dav, cov dej ntws ntws tsawg, thiab lub nrawm ntawm cov kua dej ntawm ntug ntawm qhov nruab nrab ntawm qhov tuag ploj, thiab qhov nce ntxiv yog pom tseeb dua li ntawm case2;

Case4: Thaum lub gasket shrinks, cov dej ntws ntws tawm, thiab qhov nrawm ntawm cov kua dej ntawm ntug ntawm qhov nruab nrab ntawm qhov tuag ploj.

Kev faib tawm ceev ntawm lub qhov hluav taws xob tuag yuav cuam tshuam qhov tuab ntawm txheej. Vim yog qhov xwm ntawm lithium-ion roj teeb slurry nws tus kheej, txheej tuab yuav yooj yim ua rau qhov tshwm sim ntawm tuab tuab. Txhawb nqa lossis txawm tias tshem tawm qhov tshwm sim tuab tuab. Hauv qhov tseeb ntau lawm, koj tuaj yeem xa mus rau cov qauv siv gasket saum toj no, txhim kho cov txheej txheem cov txheej txheem raws li qhov xwm txheej tiag tiag, thiab daws qhov tuab tshwm sim.

Daim duab 5 qhia tau hais tias tus cwj ciam faib tawm ntawm qhov txaus siab channel kua raug raws li plaub yam kev tshwj xeeb ntawm lub nkev roj. Piv nrog (a), cov kwj ntws ntawm (b) thiab (c) dav dua, thiab tus cwj pwm ntawm cov kua dej qis dua, thiab (d)) Qhov seem ntawm cov dej ntws dav dav dua, lub lim dej ntws txaus dua, thiab cov nplov dej ua kua kuj ntau dua. Txawm li cas los xij, (b), (c), thiab (d) txhua tus muaj thaj tsam nrog tus kab mob sib txawv. Rau qhov tsis-Newtonian lithium-ion roj teeb pastes, kev hloov pauv ntawm tus cwj nus hloov pauv tuaj yeem hloov pauv thaj chaw ntawm cov tshuaj txhuam xws li viscosity.

Tsis tas li ntawd, raws li kev tsom xam ntawm qhov chaw ntws ntawm qhov tuag thiab ntawv ci, thaum cov kua dej sab saud qib theem ntawm cov kua dej tau nyob ze rau sab nraud ntawm cov tuag daim di ncauj, kev xau tawm tuaj yog yuav tshwm sim (li pom hauv daim duab 6a ), thiab qib ntws sab saum toj ua kua theem yog ze rau lub taub hau tuag Thaum sab hauv sab hauv ntawm lub ncauj tawm, nws yog qhov yooj yim rau kev ua kom tsis muaj teeb meem ntawm ntws thiab ntog ntawm cov teb ntws (li daim duab 6b). Lub qhov rais txheej tau txiav txim siab raws li qib ua kua ntawm cov khiav sab saud, thiab plaub qhov tshwj xeeb ntawm cov roj av roj tau pom, thiab cov txheej txheem sib xyaw xim sib txawv tau hloov. Raws li pom hauv daim duab 7, txheej txheej txheej ntawm lub qhov rooj ntawm case2, case3, thiab case4 tau raug txo qis, sib xws nrog cov txheej txheem ruaj khov Cov txheej txheem parameter me dua. Yog tias cov xim tsis ua haujlwm nyob rau hauv lub qhov rooj txheej xim, xim txheej yuav ua rau pom kev tsis meej ntau dua.

Daim duab 6: Daim duab ntsuas ntawm daim teb ntws ntawm qhov tuag thiab ntawv ci: (a) Theem qib kua ntawm cov khiav sab saud yog nyob ze rau sab nraud ntawm lub qhov ncauj tuag, ua rau xau; (b) Cov theem ua kua ntawm cov khiav sab saud yog ze rau qhov hluav taws xob sab hauv ntawm qhov tuag, thiab qhov chaw ntws ntog

Daim duab 7 Txheej ntawm lub qhov rais sib haum rau plaub yam tshwj xeeb ntawm cov gaskets