Flame Retardant Analysis thiab Cov Lus Pom Zoo rau Roj Teeb Separator Coatings

Flame Retardant Analysis thiab Cov Lus Pom Zoo rau Roj Teeb Separator Coatings

Cov neeg siv khoom tsim cov roj teeb cais, thiab cov khoom sib cais tuaj yeem coated nrog ib txheej, feem ntau alumina (Al₂O₃) nrog me me ntawm binder. Tam sim no lawv nrhiav lwm cov nplaim hluav taws kub hloov pauv alumina, nrog rau cov hauv qab no:

• Cov nplaim hluav taws kub retardancy ntawm 140 ° C(piv txwv li, decomposing kom tso tawm inert gases).
• Electrochemical stabilitythiab compatibility nrog roj teeb Cheebtsam.

Pom zoo nplaim retardants thiab tsom xam

1. Phosphorus-Nitrogen Synergistic Flame Retardants (xws li Modified Ammonium Polyphosphate (APP) + Melamine)

Mechanism:

• Cov kua qaub (APP) thiab cov pa roj (melamine) sib koom ua ke tso tawm NH₃ thiab N₂, diluting oxygen thiab tsim cov char txheej los thaiv cov nplaim taws.
  Qhov zoo:
• Phosphorus-nitrogen synergy tuaj yeem txo qis decomposition kub (hloov mus rau ~ 140 ° C ntawm nano-sizing lossis formulation).
• N₂ yog ib qho roj inert; NH₃ cuam tshuam rau electrolyte (LiPF₆) xav tau kev soj ntsuam.
  Kev txiav txim siab:
• Txheeb xyuas APP stability hauv electrolytes (tsis txhob hydrolysis rau hauv phosphoric acid thiab NH₃). Silica txheej tuaj yeem txhim kho kev ruaj ntseg.
• Electrochemical compatibility kuaj (xws li, cyclic voltammetry) yuav tsum tau.

2. Nitrogen-raws li nplaim retardants (piv txwv li, Azo Compound Systems)

Tus neeg sib tw:Azodicarbonamide (ADCA) nrog cov activators (piv txwv li, ZnO).
Mechanism:

• Decomposition kub adjustable rau 140-150 ° C, tso N₂ thiab CO₂.
  Qhov zoo:
• N₂ yog ib qho zoo tagnrho inert roj, tsis muaj teeb meem rau roj teeb.
  Kev txiav txim siab:
• Tswj cov khoom lag luam (piv txwv li, CO, NH₃).
• Microencapsulation tuaj yeem kho qhov kub thiab txias.

3. Carbonate/Acid Thermal Reaction Systems (xws li Microencapsulated NaHCO₃ + Acid Source)

Mechanism:

• Microcapsules tawg ntawm 140 ° C, ua rau muaj kev cuam tshuam ntawm NaHCO₃ thiab cov organic acid (xws li citric acid) tso tawm CO₂.
  Qhov zoo:
• CO₂ yog inert thiab nyab xeeb; cov tshuaj tiv thaiv kub yog tswj tau.
  Kev txiav txim siab:
• Sodium ions tuaj yeem cuam tshuam nrog Li⁺ thauj; xav txog lithium ntsev (piv txwv li, LiHCO₃) lossis immobilizing Na⁺ hauv txheej.
• Optimize encapsulation rau chav-kub stability.

Lwm Cov Kev Xaiv Muaj Peev Xwm

• Hlau-Organic Frameworks (MOFs):Piv txwv li, ZIF-8 decomposes ntawm qhov kub thiab txias kom tso pa roj; tshuaj ntsuam rau MOFs nrog qhov sib piv decomposition kub.
• Zirconium Phosphate (ZrP):Ua ib txheej thaiv thaum thermal decomposition, tab sis tej zaum yuav xav tau nano-sizing kom qis decomposition kub.

Kev Pom Zoo

1. Thermogravimetric Analysis (TGA):Txiav txim siab decomposition kub thiab roj tso tawm zog.
2. Kev xeem Electrochemical:Ntsuas qhov cuam tshuam ntawm ionic conductivity, interfacial impedance, thiab cycling kev ua tau zoo.
3. Nplaim Retardancy Testing:Piv txwv li, ntsug hluav taws kub ntsuas, ntsuas thermal shrinkage (ntawm 140 ° C).

Xaus

CovHloov kho phosphorus-nitrogen synergistic nplaim retardant (xws li, coated APP + melamine)pom zoo ua ntej vim nws cov nplaim hluav taws kub sib npaug thiab tunable decomposition kub. Yog tias NH₃ yuav tsum zam,azo compound systemslos yogmicroencapsulated CO₂-tso systemsyog lwm txoj kev siv tau. Ib qho kev sim ua ntu zus tau qhia kom paub tseeb tias electrochemical stability thiab txheej txheem ua tau.

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