Formula Tsim rau MCA thiab Aluminium Hypophosphite (AHP) nyob rau hauv Separator Txheej rau Nplaim Retardancy

Formula Tsim rau MCA thiab Aluminium Hypophosphite (AHP) nyob rau hauv Separator Txheej rau Nplaim Retardancy

Raws li tus neeg siv cov kev cai tshwj xeeb rau cov nplaim hluav taws xob sib cais cov txheej txheem, cov yam ntxwv ntawmMelamine Cyanurate (MCA)thiabAluminium Hypophosphite (AHP)tau soj ntsuam raws li hauv qab no:

1. Compatibility nrog Slurry Systems

• MCA:
• Aqueous systems:Yuav tsum tau hloov kho deg (piv txwv li, silane coupling agents lossis surfactants) los txhim kho dispersibility; txwv tsis pub, agglomeration yuav tshwm sim.
• NMP systems:Tej zaum yuav tshwm sim me ntsis o nyob rau hauv polar solvents (pom zoo: kuaj qhov o tom qab 7-hnub immersion).
• AHP:
• Aqueous systems:Zoo dispersibility, tab sis pH yuav tsum tau tswj (acidic tej yam kev mob yuav ua rau hydrolysis).
• NMP systems:Cov tshuaj lom neeg muaj kev ruaj ntseg nrog tsawg kawg o txaus ntshai.
  Xaus:AHP qhia tau hais tias kev sib raug zoo dua, thaum MCA xav tau kev hloov kho.

2. Particle loj thiab txheej txheej txheem Adaptability

• MCA:
• Thawj D50: ~ 1-2 μm; yuav tsum tau sib tsoo (xws li, xuab zeb milling) kom txo cov particle loj, tab sis tej zaum yuav ua rau nws cov txheej txheej, cuam tshuam cov nplaim-retardant efficiency.
• Kev sib tsoo tom qab sib tsoo yuav tsum raug txheeb xyuas (SEM kev soj ntsuam).
• AHP:
• Thawj D50: Feem ntau ≤5 μm; Kev sib tsoo rau D50 0.5 μm / D90 1 μm yog ua tiav (kev sib tsoo ntau dhau yuav ua rau slurry viscosity spikes).
  Xaus:MCA muaj qhov hloov pauv me me zoo dua nrog cov txheej txheem qis dua.

3. Adhesion thiab Abrasion Resistance

• MCA:
• Tsawg polarity ua rau tsis zoo adhesion nrog PE / PP cais zaj duab xis; yuav tsum tau 5-10% acrylic-raws li binders (piv txwv li, PVDF-HFP).
• Kev sib txhuam coefficient siab yuav xav tau ntxiv 0.5-1% nano-SiO₂ txhawm rau txhim kho hnav tsis kam.
• AHP:
• Surface hydroxyl pawg tsim hydrogen bonds nrog cov sib cais, txhim kho adhesion, tab sis 3-5% polyurethane binders tseem xav tau.
• Lub hardness siab dua (Mohs ~ 3) yuav ua rau microparticle shedding nyob rau hauv kev sib txhuam ntev (yuav tsum tau kuaj cyclic).
  Xaus:AHP muaj kev ua tau zoo tag nrho tab sis xav tau kev ua kom zoo dua qub.

4. Thermal Stability thiab Decomposition Properties

• MCA:
• Decomposition kub: 260-310 ° C; tsis tuaj yeem tsim cov pa roj ntawm 120-150 ° C, muaj peev xwm ua tsis tau cov thermal khiav tawm.
• AHP:
• Decomposition kub: 280-310 ° C, kuj tsis txaus rau tsawg-kub roj tsim.
  Qhov Tseem Ceeb:Ob leeg decompose saum lub hom phiaj (120-150 ° C).Kev daws:
• Qhia cov kws kho qhov kub thiab txias (piv txwv li, microencapsulated liab phosphorus, decomposition ntau yam: 150-200 ° C) los yog hloov ammonium polyphosphate (APP, coated los kho decomposition rau 140-180 ° C).
• Design ibMCA/APP composite (6: 4 ratio)kom leverage APP qhov kub-kub tiam roj + MCA cov roj-theem nplaim hluav taws.

5. Electrochemical thiab Corrosion Resistance

• MCA:
• Electrochemically inert, tab sis residual dawb melamine (purity ≥99.5% yuav tsum tau) yuav catalyze electrolyte decomposition.
• AHP:
• Acid impurities (piv txwv li, H₃PO₂) yuav tsum raug txo kom tsawg (ICP test: hlau ions ≤10 ppm) kom tsis txhob ua kom ceev LiPF₆ hydrolysis.
  Xaus:Ob leeg xav tau siab purity (≥99%), tab sis MCA yooj yim dua los ntxuav.

Comprehensive Solution Proposal

1. Thawj Nplaim Retardant Xaiv:

• Nyiam:AHP (balanced dispersibility/adhesion) + low-temperature synergist (piv txwv li, 5% microencapsulated liab phosphorus).
• Lwm txoj kev:Hloov kho MCA (carboxyl-grafted rau aqueous dispersion) + APP synergist.

1. Txheej txheem Optimization:

• Slurry formula:AHP (90%) + polyurethane binder (7%) + wetting agent (BYK-346, 0.5%) + defoamer (2%).
• Sib tsoo parameter:Xuab zeb zeb nrog 0.3 hli ZrO₂ hlaws, 2000 rpm, 2 h (lub hom phiaj D90 ≤1 μm).

1. Validation Tests:

• Thermal decomposition:TGA (yuag poob <1% ntawm 120 ° C / 2h; roj tso tawm ntawm 150 ° C / 30min ntawm GC-MS).
• Electrochemical stability:Kev soj ntsuam SEM tom qab 30-hnub immersion hauv 1M LiPF₆ EC/DMC ntawm 60 ° C.

Kev Pom Zoo Kawg

Tsis yog MCA lossis AHP ib leeg ua tau raws li txhua qhov kev xav tau. Ahybrid systemyog qhia:

• AHP (Matrix)+microencapsulated liab phosphorus (tsawg-temperature gas generator)+nano-SiO₂(abrasion tsis kam).
• Ua ke nrog lub siab-adhesion aqueous resin (xws li, acrylic-epoxy composite emulsion) thiab kho qhov chaw hloov kho kom zoo rau qhov loj me me / kev ruaj khov.
  Kev sim ntxivNws yog tsim nyog los xyuas kom meej thermal-electrochemical synergy.