Cov txheej txheem slurry tam sim no yog:
(1) Cov khoom xyaw:
1. Kev npaj daws teeb meem:
a) Qhov sib tov sib xyaw thiab qhov hnyav ntawm PVDF (lossis CMC) thiab hnyav NMP (los yog dej deionized);
b) Lub sij hawm stirring, stirring zaus thiab lub sij hawm ntawm kev daws (thiab qhov kub thiab txias ntawm cov tshuaj);
c) Tom qab npaj cov tshuaj, xyuas cov tshuaj: viscosity (kuaj), qib ntawm solubility (kev tshuaj xyuas pom) thiab lub sijhawm txee;
d) Tsis zoo electrode: SBR + CMC tov, stirring lub sij hawm thiab zaus.
2. Khoom siv:
a) Saib xyuas seb qhov sib tov sib xyaw thiab qhov muaj pes tsawg yog qhov tseeb thaum lub sij hawm hnyav thiab sib xyaw;
b) Pob milling: lub sijhawm milling ntawm qhov zoo thiab tsis zoo electrodes;qhov sib piv ntawm agate hlaws rau qhov sib tov hauv lub pob zeb chim;qhov sib piv ntawm cov pob loj rau cov pob me hauv lub pob agate;
c) Ci: qhov kub thiab txias ntawm lub sijhawm ci;ntsuas kub tom qab txias tom qab ci.
d) Sib tov thiab nplawm ntawm cov khoom siv thiab kev daws teeb meem: stirring txoj kev, stirring sij hawm thiab zaus.
e) Sieve: hla 100 mesh (los yog 150 mesh) molecular sieve.
f) Kev kuaj thiab tshuaj xyuas:
Ua cov kev ntsuam xyuas hauv qab no ntawm slurry thiab sib tov: cov ntsiab lus khoom, viscosity, sib tov fineness, kais ntom, slurry ntom.
Ntxiv nrog rau qhov tseeb ntawm cov txheej txheem ib txwm muaj, nws tseem yuav tsum nkag siab txog cov ntsiab lus tseem ceeb ntawm lithium roj teeb muab tshuaj txhuam.
Colloid txoj kev xav
Cov nyhuv tseem ceeb ntawm kev ua kom lub agglomeration ntawm colloidal hais yog lub van der Waals quab yuam ntawm cov hais.Txhawm rau kom muaj kev ruaj ntseg ntawm colloidal hais, muaj ob txoj hauv kev.Ib qho yog ua kom cov electrostatic repulsion ntawm colloidal hais, thiab lwm yam yog los tsim ib qho chaw nruab nrab ntawm cov hmoov.Txhawm rau tiv thaiv cov agglomeration ntawm hmoov nyob rau hauv ob txoj kev no.
Qhov yooj yim tshaj plaws colloidal system yog tsim los ntawm ib tug dispersed theem thiab ib tug dispersed nruab nrab, qhov twg lub teev ntawm lub dispersed theem ntawm 10-9 mus rau 10-6m.Cov tshuaj nyob rau hauv lub colloid yuav tsum muaj ib tug tej yam degree ntawm dispersion muaj peev xwm nyob rau hauv lub system.Raws li cov kuab tshuaj sib txawv thiab cov theem dispersed, ntau hom colloidal sib txawv tuaj yeem tsim tau.Piv txwv li, pos huab yog ib qho aerosol uas cov tee dej tau tawg mus rau hauv cov pa roj, thiab cov tshuaj txhuam hniav yog ib qho sol nyob rau hauv cov khoom polymer uas tau tawg rau hauv cov kua.
Daim ntawv thov ntawm colloids abounds nyob rau hauv lub neej, thiab lub cev lub cev ntawm colloids yuav tsum sib txawv nyob ntawm seb lub disperse theem thiab dispersion nruab nrab.Kev soj ntsuam cov colloid los ntawm qhov pom ntawm lub microscopic pom, cov khoom colloidal tsis nyob hauv lub xeev, tab sis txav mus los hauv nruab nrab, uas yog qhov peb hu ua Brownian motion (Brownian motion).Tshaj li xoom xoom, cov khoom colloidal yuav raug Brownian suab vim yog thermal zog.Qhov no yog lub zog ntawm microscopic colloids.Colloidal particles sib tsoo vim Brownian suab, uas yog lub sijhawm rau kev sib sau ua ke, thaum cov khoom colloidal nyob rau hauv lub thermodynamically tsis ruaj khov, yog li kev sib cuam tshuam ntawm cov khoom yog ib qho tseem ceeb rau kev tawg.
Post lub sij hawm: May-14-2021