Formula Dhizaini yeMCA uye Aluminium Hypophosphite (AHP) muSeparator Coating yeFlame Retardancy

Formula Dhizaini yeMCA uye Aluminium Hypophosphite (AHP) muSeparator Coating yeFlame Retardancy

Zvichienderana nezvinodiwa nemushandisi zvemachira ekuparadzanisa anodzoreredza moto, maitiro eMelamine Cyanrate (MCA)uyeAluminium Hypophosphite (AHP)anoongororwa sezvinotevera:

1. Kuenderana neSlurry Systems

• MCA:
• Aqueous systems:Inoda kugadziriswa kwepamusoro (semuenzaniso, silane coupling agents kana ma surfactants) kunatsiridza dispersibility; kana zvisina kudaro, agglomeration inogona kuitika.
• NMP masisitimu:Inogona kuratidza kuzvimba kushoma mu polar solvents (yakakurudzirwa: bvunzo yekuzvimba mwero mushure mekunyudzwa kwemazuva manomwe).
• AHP:
• Aqueous systems:Good dispersibility, asi pH inofanira kudzorwa (acidic mamiriro anogona kukonzera hydrolysis).
• NMP masisitimu:Kugadzikana kwemakemikari kwakanyanya nengozi yekuzvimba kushoma.
  Mhedziso:AHP inoratidza kuenderana kuri nani, nepo MCA ichida kugadziridzwa.

2. Particle Size uye Coating Process Adaptability

• MCA:
• Yekutanga D50: ~1–2 μm; zvinoda kukuya (semuenzaniso, kugaya jecha) kuderedza saizi yechikamu, asi inogona kukuvadza chimiro chayo, zvichikanganisa kushanda kwemoto.
• Kufanana kwemashure-kukuya kunofanirwa kusimbiswa (SEM kuona).
• AHP:
• Yekutanga D50: Kazhinji ≤5 μm; kugaya kusvika kuD50 0.5 μm/D90 1 μm inokwanisika (kunyanya kugaya kunogona kukonzera slurry viscosity spikes).
  Mhedziso:MCA ine zvirinani particle size inochinjika ine yakaderera process ngozi.

3. Adhesion uye Abrasion Resistance

• MCA:
• Low polarity inotungamirira kukusanamatira kusina kunaka ne PE / PP separator mafirimu; inoda 5–10% acrylic-based binders (semuenzaniso, PVDF-HFP).
• High friction coefficient inogona kuda kuwedzera 0.5-1% nano-SiO₂ kunatsiridza kusapfeka.
• AHP:
• Mapoka epamusoro ehydroxyl anoumba hydrogen zvisungo neanoparadzanisa, achivandudza adhesion, asi 3-5% polyurethane binders ichiri kudikanwa.
• Kuoma kwepamusoro (Mohs ~ 3) kunogona kukonzera microparticle kudururwa pasi pekukakavadzana kwenguva refu (inoda kuongororwa kwecyclic).
  Mhedziso:AHP inopa zvirinani kuita kwese asi inoda binder optimization.

4. Thermal Kugadzikana uye Decomposition Properties

• MCA:
• Kuora kwekushisa: 260-310 ° C; haikwanise kugadzira gasi pa120-150 ° C, zvingangotadza kudzvanyirira kupisa kwemhepo.
• AHP:
• Decomposition tembiricha: 280-310 ° C, zvakare haina kukwana kune yakaderera-tembiricha gasi chizvarwa.
  Nyaya Yakakosha:Ose ari maviri anoora pamusoro pechinangwa (120-150 ° C).Mhinduro:
• Isai ma-synergists akadzika-tembiricha (eg, microencapsulated red phosphorus, decomposition range: 150-200 ° C) kana modified ammonium polyphosphate (APP, yakavharwa kugadzirisa kuora kusvika 140-180 ° C).
• Design anMCA/APP inoumbwa (6:4 chiyero)kukwirisa APP's yakaderera-tembiricha gasi chizvarwa + MCA's gasi-chikamu murazvo inhibition.

5. Electrochemical and Corrosion Resistance

• MCA:
• Electrochemically inert, asi yakasara isina melamine (kuchena ≥99.5% inodiwa) inogona kukonzera kuora kwe electrolyte.
• AHP:
• Acid tsvina (semuenzaniso, H₃PO₂) inofanira kuderedzwa (ICP bvunzo: metal ions ≤10 ppm) kudzivirira kukurumidza LiPF₆ hydrolysis.
  Mhedziso:Ose ari maviri anoda kuchena kwepamusoro (≥99%), asi MCA iri nyore kuchenesa.

Comprehensive Solution Proposal

1. Primary Flame Retardant Sarudzo:

• Zvinodiwa:AHP (yakaenzana dispersibility / adhesion) + low-temperature synergist (semuenzaniso, 5% microencapsulated red phosphorus).
• Imwe nzira:Yakagadziridzwa MCA (carboxyl-yakabatanidzwa kuti iparadzike kune aqueous) + APP synergist.

1. Process Optimization:

• Slurry formula:AHP (90%) + polyurethane binder (7%) + wetting agent (BYK-346, 0.5%) + defoamer (2%).
• Kukuya parameters:Chigayo chejecha chine 0.3 mm ZrO₂ beads, 2000 rpm, 2 h (chinangwa D90 ≤1 μm).

1. Validation Tests:

• Thermal decomposition:TGA (kurasikirwa uremu <1% pa120°C/2h; gasi rinobuda pa150°C/30min kuburikidza neGC-MS).
• Electrochemical kugadzikana:Kucherechedzwa kweSEM mushure mekunyudzwa kwemazuva makumi matatu mu1M LiPF₆ EC/DMC pa60°C.

Kurudziro Yokupedzisira

Hapana MCA kana AHP chete inosangana nezvose zvinodiwa. Ahybrid systemanorayirwa:

• AHP (matrix)+microencapsulated red phosphorus (yakadzika-tembiricha gasi jenareta)+nano-SiO₂(abrasion resistance).
• Shingairira ne-high-adhesion aqueous resin (eg, acrylic-epoxy composite emulsion) uye gadzirisa kugadziriswa kwepamusoro kwekukura kwechidimbu / kupararira kugadzikana.
  Kuwedzera kuedzainodiwa kusimbisa thermal-electrochemical synergy.