PBT Halogen-Free Flame Retardant Reference Formulation

PBT Halogen-Free Flame Retardant Reference Formulation

No ka hoʻopololei ʻana i ka hoʻokumu ʻana o nā mea pale ahi halogen-free no PBT, pono ia e kaulike i ka pono o ka hoʻopaʻa ʻana i ka lapalapa ahi, ke kūpaʻa wela, ka hoʻoponopono ʻana i ka wela, a me nā waiwai mechanical. Aia ma lalo kahi hoʻolālā hoʻohuihui i hoʻopaʻa ʻia me nā loiloi koʻikoʻi:

1. Hui Puhi Puhi Puhi Puhi Puhi

Koho 1: Aluminum Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate

Mechanism:

• Aluminum Hypophosphite (Thermal stability > 300°C): Hoʻoikaika i ka hoʻokumu ʻana i ka char i loko o ka māhele condensed a hoʻokuʻu i ka PO· radicals i loko o ka māhele kinoea e hoʻopau i nā hopena kaulahao puhi.
• MCA (Decomposition ma ~300°C): Hoʻokuʻu ka decomposition Endothermic i nā kinoea inert (NH₃, H₂O), e hoʻoheheʻe i nā kinoea lapalapa a me ke kāohi ʻana i ka hoʻoheheʻe ʻana.
• ʻO Zinc Borate (Decomposition > 300°C): Hoʻonui i ka hoʻokumu ʻana i nā aniani aniani, e hōʻemi ana i ka uahi a me ka afterglow.

Manaʻo Lakilike:

• Aluminum Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

Koho 2: ʻO ka Magnesium Hydroxide + Aluminum Hypophosphite + Organic Phosphinate (e laʻa, ADP)

Mechanism:

• Hoʻololi ʻia ka Magnesium Hydroxide (Decomposition ~ 300 ° C): ʻO ka mālama ʻana i ka ʻili (silane / titanate) e hoʻomaikaʻi i ka hoʻopuehu a me ke kūpaʻa wela; hoʻohaʻahaʻa ka hoʻoluʻu endothermic i ka wela o nā mea.
• Organic Phosphinate (e laʻa, ADP, thermal stability > 300°C): ʻOi loa ka maikaʻi o ke kinoea-phase flame retardant, synergizing me nā ʻōnaehana phosphorus-nitrogen.

Manaʻo Lakilike:

• Magnesium Hydroxide (15-20%) + Aluminum Hypophosphite (8-12%) + ADP (5-8%).

2. Nā Synergists koho

• Nano-clay/Talc (2-3%): Hoʻomaikaʻi i ka maikaʻi o ka char a me nā waiwai mīkini ʻoiai e hōʻemi ana i ka hoʻouka ʻana i ka lapalapa ahi.
• PTFE (0.2-0.5%): Anti-dripping agent no ka pale ʻana i nā kulu wela.
• ʻO Silicone Powder (2-4%): Hoʻolaha i ka hoʻokumu ʻana o ka char dense, hoʻonui i ka lohi o ka lapalapa a me ka ʻālohilohi.

3. Nā hui e pale aku

• Aluminum Hydroxide: Decomposes ma 180-200 ° C (ma lalo o ka PBT hana mahana o 220-250 ° C), e alakaʻi ana i ka pōʻino mua.
• ʻAʻole i hoʻololi ʻia ka Magnesium Hydroxide: Pono ka mālama ʻana i ka ʻili e pale i ka agglomeration a me ka decomposition thermal i ka wā o ka hana.

4. Nā Manaʻo Hoʻolālā Hana

• Lapaʻau ʻili: E hoʻohana i nā mea hoʻohui silane ma Mg(OH)₂ a me ka zinc borate e hoʻomaikaʻi i ka hoʻopuehu ʻana a me ka hoʻopaʻa ʻana i waena.
• Ka Hoʻoponopono ʻana i ka Mahana Manaʻo: E hōʻoia i ka wela hoʻoheheʻe ʻana o ke ahi ma mua o 250°C e pale i ka hōʻino.
• Kauna Waiwai Mechanical: E hoʻopaʻi no ka nalowale ikaika me ka hoʻohana ʻana i nā nano-fillers (e laʻa, SiO₂) a i ʻole nā ​​mea paʻakikī (e laʻa, POE-g-MAH).

5. Ka Hoʻohālike Hoʻohālike

6. Nā ana ho'āʻo koʻikoʻi

• Hoʻopaʻa Lapaʻa: UL94 V-0 (1.6mm), LOI > 35%.
• Paʻa wela: TGA koena > 25% (600°C).
• Nā Pono Mechanical: Ka ikaika tensile > 45 MPa, ka hopena notched > 4 kJ/m².

Ma ka hoʻoponopono maikaʻi ʻana i nā lakio, hiki ke hoʻokō ʻia ka hoʻopaneʻe ahi halogen-ʻole me ka mālama ʻana i ka hana holoʻokoʻa o PBT.

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