Okokuqala, isimiso sokuxuba
Ngokushukumisa ama-blade kanye nohlaka olujikelezayo ukuze luzungezise, ukumiswa komshini kukhiqizwa futhi kugcinwe, futhi ukudluliswa kwenqwaba phakathi kwezigaba eziwuketshezi neziqinile kuyathuthukiswa. Ukuyaluza okuqinile-oketshezi kuvame ukuhlukaniswa kube yizingxenye ezilandelayo: (1) ukumiswa kwezinhlayiya eziqinile; (2) ukumiswa kabusha kwezinhlayiya ezihleliwe; (3) ukungena kwezinhlayiya ezimisiwe oketshezini; (4) ukusetshenziswa phakathi kwezinhlayiya naphakathi kwezinhlayiya nezigwedlo Amandla abangela ama-agglomerates ezinhlayiyana ukuba ahlakaze noma alawule usayizi wezinhlayiyana; (5) ukudluliswa kwenqwaba phakathi koketshezi nokuqinile.
Okwesibili, umphumela onyakazayo
Inqubo yokuhlanganisa empeleni ihlanganisa izingxenye ezihlukahlukene ku-slurry ndawonye ngesilinganiso esivamile ukuze kulungiswe udaka ukuze kube lula ukunamathela okufanayo nokuqinisekisa ukuvumelana kwezingcezu zezigxobo. Izithako ngokuvamile zihlanganisa izinqubo ezinhlanu, okuyilezi: ukwelashwa ngaphambi kwesikhathi, ukuhlanganisa, ukumanzisa, ukuhlakazwa kanye nokugeleza kwezinto zokusetshenziswa.
Okwesithathu, imingcele ye-slurry
1, i-viscosity:
Ukumelana noketshezi ekugelezeni kuchazwa njengenani lokucindezelwa kwe-shear elidingekayo ngendiza engu-25 px 2 lapho uketshezi lugeleza ngesilinganiso esingu-25 px/s, esibizwa nge-kinematic viscosity, e-Pa.s.
I-viscosity iyisici soketshezi. Lapho uketshezi lugeleza epayipini, kunezimo ezintathu zokugeleza kwe-laminar, ukugeleza kwesikhashana, nokugeleza kwesiyaluyalu. Lezi zifunda ezintathu zokugeleza zikhona futhi emishinini enyakazayo, futhi enye yemingcele eyinhloko enquma lezi zifunda i-viscosity yoketshezi.
Ngesikhathi senqubo yokugqugquzela, ngokuvamile kubhekwa ukuthi i-viscosity ingaphansi kwe-5 Pa.s i-viscosity fluid ephansi, njengalezi: amanzi, amafutha e-castor, ushukela, ujamu, uju, amafutha okugcoba, i-emulsion ephansi ye-viscosity, njll; I-5-50 Pas uketshezi lwe-viscosity oluphakathi Isibonelo: uyinki, umuthi wokuxubha, njll.; Ama-50-500 Pa ama-viscosity fluids aphezulu, njenge-chewing gum, i-plastisol, uphethiloli oqinile, njll.; ngaphezu kuka-500 Pa uketshezi olune-viscosity ephezulu eyengeziwe njengalezi: izingxube zenjoloba, ukuncibilika kwepulasitiki, i-organic Silicon nokunye.
2, usayizi wezinhlayiyana D50:
Ububanzi besayizi yezinhlayiyana ezingama-50% ngevolumu yezinhlayiya ezikudaka
3, okuqukethwe okuqinile:
Iphesenti lezinto eziqinile ku-slurry, isilinganiso sethiyori sokuqukethwe okuqinile singaphansi kokuqukethwe okuqinile kokuthunyelwa.
Okwesine, isilinganiso semiphumela exubile
Indlela yokuthola ukufana kokuxuba nokuxutshwa kwesistimu yokumiswa koketshezi oluqinile:
1, ukulinganisa okuqondile
1) Indlela ye-viscosity: isampula kusuka ezikhundleni ezahlukene zesistimu, ukulinganisa i-viscosity ye-slurry nge-viscometer; ukuchezuka kuncane, ukuxubana okufanayo;
2) Indlela yezinhlayiya:
A, amasampula avela ezindaweni ezihlukene zesistimu, kusetshenziswa i-scraper yosayizi wezinhlayiyana ukubona usayizi wezinhlayiyana ze-slurry; lapho usayizi wezinhlayiyana usondelana nobukhulu bempushana yezinto ezingavuthiwe, ukuxuba okufanayo;
B, ukuthatha amasampula ezindaweni ezihlukene zohlelo, kusetshenziswa isihloli sikasayizi wezinhlayiyana ze-laser ukuze kubhekwe usayizi wezinhlayiyana zodaka; lapho ukusabalalisa usayizi wezinhlayiyana kujwayelekile, ezincane izinhlayiya ezinkulu, ukuxuba okufanayo;
3) Indlela ethile yamandla adonsela phansi: ukusampula ezindaweni ezihlukene zohlelo, ukulinganisa ukuminyana kodaka, ukuchezuka kuncane, ukuxutshwa kufana kakhulu.
2. Ukulinganisa okungaqondile
I-1) Indlela yokuqukethwe okuqinile (i-macroscopic): Isampula kusuka ezindaweni ezahlukene zesistimu, emva kokushisa okufanelekile nesikhathi sokubhaka, ukulinganisa isisindo sengxenye eqinile, ukuchezuka kuncane, ukuxuba okufanayo;
2) I-SEM/EPMA (i-microscopic): isampula elisuka ezindaweni ezihlukene zesistimu, lisebenza ku-substrate, yomile, futhi libheke izinhlayiya noma izakhi zefilimu ngemva kokumisa i-slurry nge-SEM (electron microscope) / EPMA (electron probe) Distribution ; (okuqinile kwesistimu kuvame ukuba yizinto zokuqhuba)
Eyesihlanu, inqubo yokugqugquzela i-anode
I-conductive carbon black: Isetshenziswa njenge-ejenti yokuqhuba. Umsebenzi: Ukuxhuma izinhlayiya ezinkulu zezinto ezisebenzayo ukuze wenze ukuqhutshwa kahle kube kuhle.
I-copolymer latex - SBR (irabha ye-styrene butadiene): isetshenziswa njenge-binder. Igama lekhemikhali: I-Styrene-Butadiene copolymer latex (i-polystyrene butadiene latex), i-latex encibilikayo emanzini, okuqukethwe okuqinile 48~50%, PH 4~7, indawo yokuqandisa -5~0 °C, indawo yokubilisa mayelana ne-100 °C, izinga lokushisa lokugcina 5 ~ 35 ° C. I-SBR iwuhlaka lwe-anionic polymer enokuqina okuhle kokusebenza nokusebenza, futhi inamandla ebhondi aphezulu.
I-sodium carboxymethyl cellulose (CMC) - (i-carboxymethyl cellulose sodium): isetshenziswa njenge-thickener ne-stabilizer. Ukubukeka kumhlophe noma kuphuzi i-floc fiber powder noma impushana emhlophe, ayinaphunga, ayinambitheki, ayinabuthi; I-soluble emanzini abandayo noma emanzini ashisayo, yakha ijeli, isixazululo asithathi hlangothi noma sine-alkaline kancane, ayincibiliki ku-ethanol, ether, I-solvent ephilayo njenge-isopropyl alcohol noma i-acetone iyancibilika ku-60% yesisombululo samanzi se-ethanol noma i-acetone. I-hygroscopic, iqinile ekukhanyeni nasekushiseni, i-viscosity iyancipha ngokukhuphuka kwezinga lokushisa, isixazululo sizinzile ku-pH 2 kuya ku-10, i-PH ingaphansi kuka-2, izinto eziqinile ziyaqina, futhi i-pH ingaphezu kuka-10. Izinga lokushisa lokushintsha umbala lalingu-227 ° C, izinga lokushisa le-carbonization lalingu-252 ° C, futhi ukungezwani kwendawo yesisombululo samanzi esingu-2% kwaba ngu-71 nm/n.
Inqubo yokuvuselela i-anode kanye ne-coating imi kanje:
Okwesithupha, inqubo yokugqugquzela i-cathode
I-conductive carbon black: Isetshenziswa njenge-ejenti yokuqhuba. Umsebenzi: Ukuxhuma izinhlayiya ezinkulu zezinto ezisebenzayo ukuze wenze ukuqhutshwa kahle kube kuhle.
I-NMP (N-methylpyrrolidone): isetshenziswa njengesixazululi esinyakazayo. Igama lekhemikhali: N-Methyl-2-polyrrolidone, ifomula yamangqamuzana: C5H9NO. I-N-methylpyrrolidone iwuketshezi olunuka i-ammonia kancane oluxubana namanzi kunoma iyiphi ingxenye futhi lucishe luhlanganiswe ngokuphelele nazo zonke izincibilikisi (i-ethanol, i-acetaldehyde, i-ketone, i-hydrocarbon enuka kamnandi, njll.). Iphuzu elibilayo lika-204 ° C, iphoyinti elikhanyayo lika-95 ° C. I-NMP iyi-solvent ye-polar aprotic enobuthi obuphansi, indawo yokubilisa ephezulu, ukuncibilika okuhle kakhulu, ukukhetha nokuzinza. Isetshenziswa kabanzi ekukhishweni kwama-aromatics; ukuhlanzwa kwe-acetylene, i-olefins, i-diolefins. I-solvent esetshenziselwa i-polymer kanye ne-medium yokwenza i-polymerization okwamanje isetshenziswa enkampanini yethu ye-NMP-002-02, enobumsulwa obungu->99.8%, amandla adonsela phansi athile angu-1.025~1.040, kanye nokuqukethwe kwamanzi okungu-<0.005% (500ppm) ).
I-PVDF (i-polyvinylidene fluoride): isetshenziswa njenge-thickener ne-binder. I-polymer emhlophe eyikristalu eyimpuphu enokuminyana okuhlobene kuka-1.75 kuya ku-1.78. Inokumelana okuhle kakhulu kwe-UV nokumelana nesimo sezulu, futhi ifilimu yayo ayiqinile futhi ayiqhekeki ngemva kokubekwa ngaphandle ishumi leminyaka elilodwa noma amabili. Izakhiwo ze-dielectric ze-polyvinylidene fluoride zicacile, i-dielectric constant iphakeme njengo-6-8 (MHz~60Hz), futhi i-tangent yokulahlekelwa kwe-dielectric nayo inkulu, cishe ngo-0.02~0.2, futhi ukumelana nevolumu kuphansi kancane, okuyi-2 ×1014ΩNaN. Izinga lokushisa layo lesikhathi eside liyi--40 ° C ~ +150 ° C, kuleli banga lokushisa, i-polymer inezici ezinhle zemishini. Inezinga lokushisa lokushintsha kwengilazi elingu -39 ° C, izinga lokushisa le-embrittlement elingu -62 ° C noma ngaphansi, indawo encibilikayo yekristalu engaba ngu-170 ° C, kanye nezinga lokushisa lokubola elingu-316 ° C noma ngaphezulu.
Inqubo yokuvuselela nokuhlanganisa i-cathode:
7. Izici ze-viscosity ze-slurry
1. Ijika le-viscosity ye-slurry enesikhathi esishukumisayo
Njengoba isikhathi esishukumisayo sinwetshiwe, i-viscosity ye-slurry ijwayele ukuba yinani elizinzile ngaphandle kokushintsha (kungashiwo ukuthi i-slurry ihlakazekile ngokufanayo).
2. Ijika le-slurry viscosity enezinga lokushisa
Ukuphakama kwezinga lokushisa, i-viscosity ephansi ye-slurry, futhi i-viscosity ijwayele inani elizinzile lapho ifinyelela izinga elithile lokushisa.
3. Ijika lokuqukethwe okuqinile kwe-slurry yethangi lokudlulisa ngokuhamba kwesikhathi
Ngemuva kokuthi i-slurry inyakaziswa, ihanjiswa ngamapayipi ethangini lokudlulisa ukuze kufakwe i-Coater. Ithangi lokudlulisa liyashukunyiswa ukuze lijikelezise: 25Hz (740RPM), inguquko: 35Hz (35RPM) ukuze kuqinisekiswe ukuthi amapharamitha we-slurry azinzile futhi ngeke ashintshe, kuhlanganise ne-pulp. Izinga lokushisa lezinto ezibonakalayo, i-viscosity kanye nokuqukethwe okuqinile ukuze kuqinisekiswe ukufana kwe-slurry coating.
4, i-viscosity ye-slurry enejika lesikhathi
Isikhathi sokuthumela: Oct-28-2019