Ua ntej, lub hauv paus ntsiab lus ntawm kev sib tov
Los ntawm kev sib xyaw cov hniav thiab lub thav duab tig kom tig ib leeg, qhov kev ncua tshuab raug tsim thiab tswj hwm, thiab qhov hloov pauv ntawm cov kua thiab cov khoom khov kho tau txhim kho. Kev sib xyaw khoom khov-kua feem ntau muab faib ua cov ntu hauv qab no: (1) kev ncua ntawm cov khoom khov kho; (2) kev rov ua dua ntawm cov khoom khov kho; (3) kev nkag mus ntawm cov khoom khov kho rau hauv cov kua; (4) siv ntawm cov khoom khov kho thiab ntawm cov khoom khov kho thiab cov paddles Lub zog ua rau cov khoom khov kho sib cais lossis tswj qhov loj me ntawm cov khoom khov kho; (5) qhov hloov pauv ntawm cov kua thiab khoom khov kho.
Qhov thib ob, qhov cuam tshuam ntawm kev nplawm
Cov txheej txheem sib xyaw ua ke yeej sib tov cov khoom sib txawv hauv cov slurry ua ke hauv qhov sib piv ib txwm kom npaj tau cov slurry kom yooj yim rau kev sib xyaw thiab xyuas kom meej tias cov khoom seem sib xws. Cov khoom xyaw feem ntau muaj tsib txoj hauv kev, uas yog: kev kho ua ntej, kev sib xyaw, kev ntub, kev faib tawm thiab kev sib sau ua ke ntawm cov khoom siv raw.
Qhov thib peb, cov txheej txheem slurry
1, viscosity:
Qhov kev tiv thaiv ntawm cov kua dej rau qhov ntws yog txhais tias yog qhov ntau ntawm kev ntxhov siab shear xav tau ib 25 px 2 dav hlau thaum cov kua ntws ntawm tus nqi ntawm 25 px / s, hu ua kinematic viscosity, hauv Pa.s.
Viscosity yog ib yam khoom ntawm cov kua dej. Thaum cov kua dej ntws hauv cov kav dej, muaj peb lub xeev ntawm laminar flow, transitional flow, thiab turbulent flow. Peb lub xeev ntws no kuj muaj nyob rau hauv cov khoom siv sib xyaw, thiab ib qho ntawm cov yam ntxwv tseem ceeb uas txiav txim siab cov xeev no yog viscosity ntawm cov kua dej.
Thaum lub sijhawm ua kom sib xyaw, feem ntau xav tias qhov viscosity tsawg dua 5 Pa.s yog cov kua viscosity qis, xws li: dej, roj castor, qab zib, jam, zib ntab, roj lubricating, emulsion viscosity qis, thiab lwm yam; 5-50 Pa yog cov kua viscosity nruab nrab Piv txwv li: kua mem, tshuaj txhuam hniav, thiab lwm yam; 50-500 Pa yog cov kua viscosity siab, xws li cov khoom noj zom, plastisol, roj khov, thiab lwm yam; ntau dua 500 Pa yog cov kua viscosity siab ntxiv xws li: roj hmab sib xyaw, yas yaj, organic Silicon thiab lwm yam.
2, qhov loj me ntawm cov khoom me me D50:
Qhov loj ntawm cov khoom me me yog 50% ntawm qhov ntim ntawm cov khoom me me hauv cov slurry
3, cov ntsiab lus khov kho:
Qhov feem pua ntawm cov khoom khov hauv cov slurry, qhov piv theoretical ntawm cov ntsiab lus khov yog tsawg dua li cov ntsiab lus khov ntawm cov khoom xa tuaj
Plaub, qhov ntsuas ntawm cov teebmeem sib xyaw
Ib txoj kev los nrhiav qhov sib npaug ntawm kev sib tov thiab kev sib tov ntawm lub kaw lus suspension khoom khov-kua:
1, kev ntsuas ncaj qha
1) Txoj kev viscosity: kuaj los ntawm ntau qhov chaw ntawm lub kaw lus, ntsuas qhov viscosity ntawm cov slurry nrog lub viscometer; qhov me dua qhov sib txawv, qhov sib xyaw ua ke ntau dua;
2) Txoj kev siv cov khoom me me:
A, kuaj los ntawm ntau qhov chaw ntawm lub kaw lus, siv lub tshuab khawb me me los soj ntsuam qhov loj me ntawm cov slurry; qhov ze dua qhov loj me ntawm cov khoom siv yog rau qhov loj me ntawm cov hmoov raw, qhov sib xyaw ua ke ntau dua;
B, kev kuaj los ntawm ntau qhov chaw ntawm lub kaw lus, siv lub tshuab ntsuas qhov loj ntawm cov khoom me me los soj ntsuam qhov loj ntawm cov slurry; qhov ntau dua qhov kev faib tawm ntawm cov khoom me me, qhov me dua cov khoom loj dua, qhov sib xyaw ntau dua;
3) Txoj kev ntsuas qhov hnyav tshwj xeeb: kuaj los ntawm ntau qhov chaw ntawm lub kaw lus, ntsuas qhov ceev ntawm cov slurry, qhov me dua qhov sib txawv, qhov sib xyaw ntau dua
2. Kev ntsuas tsis ncaj qha
1) Txoj kev ntsuas cov khoom khov (macroscopic): Kev kuaj los ntawm ntau qhov chaw ntawm lub kaw lus, tom qab qhov kub thiab sijhawm tsim nyog ci, ntsuas qhov hnyav ntawm cov khoom khov, qhov sib txawv me dua, qhov sib xyaw sib npaug ntau dua;
2) SEM/EPMA (microscopic): coj mus kuaj los ntawm ntau qhov chaw ntawm lub system, siv rau ntawm lub substrate, ziab, thiab saib cov khoom me me lossis cov ntsiab lus hauv zaj duab xis tom qab ziab cov slurry los ntawm SEM (electron microscope) / EPMA (electron probe) Kev faib tawm; (cov khoom khov ntawm lub system feem ntau yog cov khoom siv conductor)
Tsib, anode stirring txheej txheem
Cov pa roj carbon dub uas ua rau hluav taws xob zoo: Siv ua tus neeg sawv cev uas ua rau hluav taws xob zoo. Kev Ua Haujlwm: Txuas cov khoom siv loj loj kom ua rau hluav taws xob zoo.
Copolymer latex — SBR (styrene butadiene roj hmab): siv ua ib qho binder. Lub npe tshuaj: Styrene-Butadiene copolymer latex (polystyrene butadiene latex), latex yaj hauv dej, cov khoom khov 48 ~ 50%, PH 4 ~ 7, khov point -5 ~ 0 ° C, boiling point txog 100 ° C, cia kub 5 ~ 35 ° C. SBR yog ib qho anionic polymer dispersion nrog kev ruaj khov zoo thiab kev ua haujlwm, thiab muaj lub zog sib txuas siab.
Sodium carboxymethyl cellulose (CMC) - (carboxymethyl cellulose sodium): siv ua cov khoom tuab thiab stabilizer. Zoo li yog dawb lossis daj floc fiber hmoov lossis hmoov dawb, tsis muaj ntxhiab, tsis muaj saj, tsis muaj tshuaj lom; soluble hauv dej txias lossis dej kub, tsim cov gel, cov tshuaj yog nruab nrab lossis me ntsis alkaline, insoluble hauv ethanol, ether. Cov organic solvent xws li isopropyl cawv lossis acetone yog soluble hauv 60% aqueous kua ntawm ethanol lossis acetone. Nws yog hygroscopic, ruaj khov rau lub teeb thiab cua sov, viscosity txo qis nrog qhov kub nce, cov tshuaj ruaj khov ntawm pH 2 txog 10, PH qis dua 2, cov khoom khov kho, thiab pH siab dua 10. Qhov kub hloov xim yog 227 ° C, qhov kub carbonization yog 252 ° C, thiab qhov nro ntawm qhov chaw ntawm 2% aqueous kua yog 71 nm / n.
Cov txheej txheem anode stirring thiab txheej yog raws li nram no:
Rau, cathode stirring txheej txheem
Cov pa roj carbon dub uas ua rau hluav taws xob zoo: Siv ua tus neeg sawv cev uas ua rau hluav taws xob zoo. Kev Ua Haujlwm: Txuas cov khoom siv loj loj kom ua rau hluav taws xob zoo.
NMP (N-methylpyrrolidone): siv ua cov tshuaj yaj. Lub npe tshuaj: N-Methyl-2-polyrrolidone, cov mis molecular: C5H9NO. N-methylpyrrolidone yog cov kua me ntsis uas muaj ntxhiab ammonia uas sib xyaw nrog dej hauv txhua qhov sib piv thiab yuav luag sib xyaw nrog txhua cov tshuaj yaj (ethanol, acetaldehyde, ketone, aromatic hydrocarbon, thiab lwm yam). Lub ntsiab lus kub ntawm 204 ° C, lub ntsiab lus ci ntawm 95 ° C. NMP yog cov tshuaj yaj aprotic polar nrog cov tshuaj lom tsawg, lub ntsiab lus kub siab, solubility zoo heev, xaiv tau thiab ruaj khov. Siv dav hauv aromatics extraction; purification ntawm acetylene, olefins, diolefins. Cov tshuaj yaj siv rau polymer thiab cov khoom nruab nrab rau polymerization tam sim no siv hauv peb lub tuam txhab rau NMP-002-02, nrog kev ntshiab ntawm >99.8%, lub zog tshwj xeeb ntawm 1.025 ~ 1.040, thiab cov dej ntsiab lus ntawm <0.005% (500ppm).
PVDF (polyvinylidene fluoride): siv ua cov khoom siv tuab thiab cov khoom siv khi. Cov polymer dawb crystalline nrog qhov ceev ntawm 1.75 txog 1.78. Nws muaj kev tiv thaiv UV zoo heev thiab kev tiv thaiv huab cua, thiab nws cov zaj duab xis tsis tawv thiab tawg tom qab muab tso rau sab nraum zoov rau ib lossis ob xyoo caum. Cov khoom dielectric ntawm polyvinylidene fluoride yog qhov tshwj xeeb, qhov dielectric tas mus li yog siab txog 6-8 (MHz ~ 60Hz), thiab qhov dielectric poob tangent kuj loj, txog li 0.02 ~ 0.2, thiab qhov ntim tsis kam yog me ntsis qis dua, uas yog 2 × 1014ΩNaN. Nws qhov kub siv ntev yog -40 ° C ~ +150 ° C, hauv qhov kub no, cov polymer muaj cov khoom siv kho tshuab zoo. Nws muaj qhov kub hloov iav ntawm -39 ° C, qhov kub embrittlement ntawm -62 ° C lossis tsawg dua, qhov chaw yaj ntawm crystal txog li 170 ° C, thiab qhov kub thermal decomposition ntawm 316 ° C lossis ntau dua.
Cov txheej txheem cathode stirring thiab txheej:
7. Cov yam ntxwv ntawm cov slurry
1. Nkhaus ntawm cov kua nplaum viscosity nrog lub sijhawm nplawm
Thaum lub sijhawm nplawm ntev dua, qhov viscosity ntawm cov slurry feem ntau yog tus nqi ruaj khov yam tsis hloov pauv (nws tuaj yeem hais tias cov slurry tau raug faib sib npaug).
2. Nkhaus ntawm cov kua nplaum viscosity nrog kub
Qhov kub siab dua, qhov viscosity ntawm cov slurry qis dua, thiab viscosity feem ntau yuav ruaj khov thaum nws mus txog qee qhov kub.
3. Nkhaus ntawm cov ntsiab lus khov kho ntawm lub tank hloov pauv slurry nrog lub sijhawm
Tom qab cov slurry raug do, nws raug xa mus rau lub tank hloov pauv rau Coater txheej. Lub tank hloov pauv raug do kom tig: 25Hz (740RPM), tig rov qab: 35Hz (35RPM) kom ntseeg tau tias cov kev teeb tsa ntawm cov slurry ruaj khov thiab yuav tsis hloov pauv, suav nrog cov pulp. Cov khoom kub, viscosity thiab cov ntsiab lus khov kho kom ntseeg tau tias cov txheej slurry sib xws.
4, qhov viscosity ntawm slurry nrog lub sijhawm nkhaus
Lub sijhawm tshaj tawm: Lub Kaum Hli-28-2019