Polyurethane AB Ifumbire ya Powder Flame Retardant

Polyurethane AB Ifumbire ya Powder Flame Retardant
Hashingiwe ku cyifuzo cya halogen-flame retardant formulaire ya polyurethane AB yometse kuri polyurethane AB, ihujwe nibiranga hamwe ningaruka ziterwa ningaruka zumuriro nka aluminium hypophosphite (AHP), hydroxide ya aluminium (ATH), borate ya zinc, na melamine cyanurate (MCA), hateguwe gahunda eshatu zikurikira. Iyi formulaire idafite chlorine kandi yibanda mugutezimbere imikorere ya flame retardant, imikorere yumubiri, hamwe nibikorwa bishoboka:

1.

Core Flame Retardant Gukomatanya:

• Aluminium hypophosphite (AHP): 8-12 interuro (ubwoko bwa polyurethane bwometse ku mazi busabwa gukemura ibibazo by'imvura)
• Hydroxide ya aluminium (ATH): 20-25 interuro (icyiciro cya submicron, 0.2-1.0 μ mm, kugirango uzamure ogisijeni hamwe na char compactness)
• MCA: 5-8 interuro (uburyo bwa gaz-fase, guhuza na AHP mugice cyegeranye)
• Zinc borate: 3-5 interuro (iteza imbere ceramic char char kandi ikabuza gucana)

Imikorere iteganijwe:

• Icyerekezo cya Oxygene (LOI): ≥32% (PU yera ≈22%);
• Urutonde rwa UL94: V-0 (uburebure bwa mm 1,6);
• Amashanyarazi yubushyuhe: 0.45-0.55 W / m · K (yatanzwe na ATH na borate ya zinc);
• Kurwanya Viscosity: 25.000-30.000 cP (kuvura hejuru bisabwa kugirango wirinde ubutayu).

Inzira y'ingenzi:

• AHP igomba kubanza gukwirakwizwa mubice bya polyol (Igice A) kugirango wirinde kwitwara hakiri kare hamwe na isocyanate (Igice B);
• ATH igomba guhindurwa hamwe na silane ihuza (urugero, KH-550) kugirango izamure imikoranire.

2. Igiciro rusange-Igiciro rusange (Kubifunga kubaka, guhuza ibikoresho, intego UL94 V-1)

Core Flame Retardant Gukomatanya:

• Hydroxide ya Aluminium (ATH): 30-40 interuro (urwego rusanzwe rwa micron, igiciro cyinshi, cyuzuza ubwoko bwa flame retardant);
• Ammonium polyphosphate (APP): interuro 10-15 (ihujwe na MCA kuri sisitemu yimikorere, isimbuza imiti ya halogene);
• MCA: 5-7 interuro (igereranyo na APP 1: 2 ~ 1: 3, itera ifuro na okisijene kwigunga);
• Zinc borate: interuro 5 (guhagarika umwotsi, gushiraho char auxiliary).

Imikorere iteganijwe:

• LOI: ≥28%;
• Urutonde rwa UL94: V-1;
• Kugabanya ibiciro: ~ 30% (ugereranije na flame-retardancy formulaire);
• Kugumana imbaraga zingana: ≥80% (APP isaba ensapsulation kugirango wirinde hydrolysis).

Inzira y'ingenzi:

• APP igomba kuba microencapsulated (urugero, hamwe na resin ya melamine-formaldehyde) kugirango wirinde kwinjiza amazi no kubyara;
• Ongeramo 1-2 interuro hydrophobic fumed silica (urugero, Aerosil R202) kugirango irwanye.

D.

Core Flame Retardant Gukomatanya:

• Aluminium hypophosphite (AHP): 5-8 interuro (nanosize, D50 ≤1 μ m);
• Amazi ya fosifore yumuriro wa retardant (BDP ubundi): interuro 8-10 (urugero, inkomoko ya fosifore idafite halogene ishingiye kuri DMMP, ikomeza ubwiza);
• Hydroxide ya aluminium (ATH): interuro 15 (spherical alumina composite, iringaniza ubushyuhe bwumuriro);
• MCA: interuro 3-5.

Imikorere iteganijwe:

• Urwego rwa Viscosity: 10,000-15,000 cP (hafi ya sisitemu ya flame retardant);
• Kubuza umuriro: UL94 V-0 (byongerewe na fosifore y'amazi);
• Amashanyarazi yubushyuhe: ≥0.6 W / m · K (yatanzwe na alumina spherical).

Inzira y'ingenzi:

• AHP na alumina spherical alumina bigomba gufatanya no gutatanywa munsi yimyenda ndende (0002000 rpm);
• Ongeramo 4-6 interuro ya molekile ya sike desiccant mugice B kugirango wirinde kwinjiza AHP.

4. Guteranya Ingingo ya Tekinike & Ibindi bisubizo

1. Uburyo bukoreshwa:

• AHP + MCA:AHP iteza umwuma no gutwika, mugihe MCA irekura gaze ya azote imaze gushyuha, igakora ubuki busa nubuki.
• ATH + Zinc borate:ATH ikurura ubushyuhe (1967 J / g), na zinc borate ikora ikirahuri cya borate kugirango gitwikire hejuru.

2. Ubundi buryo bwa Flame Retardants:

• Ibikomoka kuri polyphosphazene:Gukora neza cyane kandi byangiza ibidukikije, hamwe na progaramu ya HCl ikoreshwa;
• Epoxy silicone resin (ESR):Iyo uhujwe na AHP, bigabanya imizigo yose (18% kuri V-0) kandi itezimbere imiterere yubukanishi.

3. Kugenzura ibyago:

• Ibimera:Ibikoresho birwanya gutuza (urugero, ubwoko bwa polyurea bwahinduwe) busabwa niba viscosity <10,000 cP;
• Gukiza kubuza:Irinde kurenza urugero rwa alkaline flame retardants (urugero, MCA) kugirango wirinde kwivanga mubitekerezo bya isocyanate.

5. Ibyifuzo byo Gushyira mubikorwa

• Shyira imbere kwipimisha hejuru-flame-retardancy formulaire: yometse kuri AHP + submicron ATH (impuzandengo ya 0.5 mm) kuri AHP: ATH: MCA = 10: 20: 5 kugirango ube mwiza.
• Ibizamini by'ingenzi:
  → LOI (GB / T 2406.2) na UL94 gutwika bihagaritse;
  Imbaraga zihuza nyuma yo gusiganwa ku magare (-30 ℃ ~ 100 ℃, amasaha 200);
  Ip Imvura igwa nyuma yumusaza byihuse (60 ℃ / 7d).

Imbonerahamwe ya Flame Retardant