Gusenya no Gutatanya Inzira Zikomeye Zirinda Flame muri Polyurethane AB Adhesive Sisitemu

Gusenya no Gutatanya Inzira Zikomeye Zirinda Flame muri Polyurethane AB Adhesive Sisitemu

Kugirango iseswa / ikwirakwizwa rya flame retardants nka aluminium hypophosphite (AHP), hydroxide ya aluminium (ATH), zinc borate, na melamine cyanurate (MCA) muri sisitemu ya polyurethane AB, intambwe zingenzi zirimo kwitegura, gutatanya intambwe, no kugenzura neza. Hasi ni inzira irambuye (kuri flame-retardant formulaire; izindi formulaire zirashobora guhinduka ukurikije).

I. Amahame remezo

1. "Dissolution" ni ugutatanya: Gukwirakwiza urumuri rukomeye bigomba gutatanyirizwa hamwe muri polyol (A-bigize) kugirango habeho ihagarikwa rihamye.
2. Kwirinda ibicanwa bya flame: Gukemura ibibazo byo kwinjiza amazi, agglomeration, hamwe na reaction hamwe na isocyanates.
3. Intambwe yongeyeho: Ongeramo ibikoresho ukurikije ubunini nubunini buke kugirango wirinde kwibanda cyane.
4. Kugenzura ubuhehere bukabije: Amazi atwara isocyanate (-NCO) mubice B, biganisha ku gukira nabi.

II. Uburyo burambuye bwo gukora (Ukurikije ibice 100 polyol muri A-bigize)

Intambwe ya 1: Kwirinda Flame Retardant (amasaha 24 mbere)

• Aluminium Hypophosphite (AHP, ibice 10):
  • Ubuso bwububiko hamwe na silane ihuza (KH-550) cyangwa umukozi wo guhuza titanate (NDZ-201):
    • Kuvanga ibice 0.5 guhuza agent + ibice 2 anhydrous Ethanol, koga kuminota 10 kuri hydrolysis.
    • Ongeramo ifu ya AHP hanyuma ukangure kumuvuduko mwinshi (1000 rpm) muminota 20.
    • Kuma mu ziko kuri 80 ° C mumasaha 2, hanyuma ubike bifunze.
• Hydroxide ya Aluminium (ATH, ibice 25):
  • Koresha submicron-nini, silane-yahinduwe ATH (urugero, Wandu WD-WF-20). Niba bidahinduwe, fata kimwe na AHP.
• MCA (ibice 6) & Zinc Borate (ibice 4):
  • Kama kuri 60 ° C mumasaha 4 kugirango ukureho ubuhehere, hanyuma ushungure ukoresheje ecran ya mesh 300.

Intambwe ya 2: A-Ibigize (Uruhande rwa Polyol) Uburyo bwo Gutatanya

1. Kuvanga shingiro:
   • Ongeramo ibice 100 polyol (urugero, polyether polyol PPG) mubintu byumye.
   • Ongeramo ibice 0.3 byahinduwe na polysiloxane urwego rwo kuringaniza (urugero, BYK-333).
2. Umuvuduko muke mbere yo gutatanya:
   • Ongeramo flame retardants ukurikije: ATH (ibice 25) → AHP (ibice 10) → zinc borate (ibice 4) → MCA (ibice 6).
   • Kangura kuri 300-500 rpm kuminota 10 kugeza nta fu yumye isigaye.
3. Ikwirakwizwa ryinshi-Shear:
   • Hindura kuri disikuru yihuta (001500 rpm) kuminota 30.
   • Kugenzura ubushyuhe ≤50 ° C (kugirango wirinde okiside polyol).
4. Gusya & Gutunganya (Birakomeye!):
   • Genda unyuze mumashanyarazi atatu cyangwa urusyo rwumusenyi inshuro 2-3 kugeza uburinganire bwa ≤30μm (bipimishwa na Hegman gauge).
5. Guhindura Viscosity & Defoaming:
   • Ongeramo ibice 0.5 hydrophobic fumed silica (Aerosil R202) kugirango wirinde gutura.
   • Ongeramo ibice 0.2 silicone defoamer (urugero, Tego Airex 900).
   • Kangura 200 rpm kuminota 15 yo gutesha agaciro.

Intambwe ya 3: B-Ibigize (Uruhande rwa Isocyanate)

• Ongeramo ibice 4-6 bya molekile ya elegitoronike (urugero, Zeochem 3A) kuri B-bigize (urugero, MDI prepolymer) kugirango yinjire neza.
• Niba ukoresheje fosifore ya flame retardants (amahitamo make-viscosity), vanga muburyo bwa B-hanyuma ukangure iminota 10.

Intambwe ya 4: AB Ibigize Kuvanga & Gukiza

• Ikigereranyo cyo kuvanga: Kurikiza igishushanyo mbonera cya AB gifatika (urugero, A: B = 100: 50).
• Uburyo bwo kuvanga:
  • Koresha ibice bibiri bigize umubumbe cyangwa kuvanga static.
  • Kuvanga iminota 2-3 kugeza igihe kimwe (nta mugozi).
• Uburyo bwo gukiza:
  • Ubushyuhe bwo mucyumba bukiza: amasaha 24 (yongerewe na 30% bitewe nubushyuhe bwa flame retardant).
  • Gukiza byihuse: amasaha 60 ° C / amasaha 2 (kwemeza ibisubizo bidafite ibisubizo).

III. Ingingo z'ingenzi zo kugenzura inzira

IV. Ubundi buryo bwo Gutatanya (Nta Gusya Ibikoresho)

1. Kwitegura gusya umupira:
   • Kuvanga flame retardants na polyol kuri 1: 1, urusyo rwumupira kumasaha 4 (imipira ya zirconi, ubunini bwa 2mm).
2. Uburyo bwa Masterbatch:
   • Tegura 50% flame retardant masterbatch (polyol nkuwitwaye), hanyuma uyunguruze mbere yo kuyikoresha.
3. Ikwirakwizwa rya Ultrasonic:
   • Koresha ultrasonication (20kHz, 500W, min 10) kugirango ushire imbere (ubereye uduce duto).

V. Ibyifuzo byo Gushyira mubikorwa

1. Igeragezwa rito rya mbere: Gerageza hamwe na 100g ya A-igizwe, wibanda ku guhagarara kwijimye (24h ihinduka <10%) no gukiza umuvuduko.
2. Flame retardant yongeyeho amategeko akurikirana:
   • "Biremereye mbere, byoroheje nyuma; byiza ubanza, bikabije nyuma" → ATH (biremereye) → AHP (byiza) → zinc borate (hagati) → MCA (urumuri / rubi).
3. Gukemura ibibazo byihutirwa:
   • Ubwiyongere butunguranye bwiyongera: Ongeramo 0.5% propylene glycol methyl ether acetate (PMA) kugirango uyunguruze.
   • Gukiza nabi: Ongeraho 5% MDI yahinduwe (urugero, Wanhua PM-200) kuri B-bigize.