PBT Halogen-Free Flame Retardant Formulation

PBT Halogen-Free Flame Retardant Formulation

No ka hoʻomohala ʻana i kahi ʻōnaehana halogen-free flame retardant (FR) no PBT, pono ia e kaulike i ka maikaʻi o ka hoʻopaʻa ʻana i ka lapalapa ahi, ke kūpaʻa wela, ka hoʻoponopono ʻana i ka wela, a me nā waiwai mechanical.

I. Hui Puhi Puhi Puhi Puhi

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 temp. ~300°C): Endothermic decomposition hoʻokuʻu i nā kinoea inert (NH₃, H₂O), hoʻoheheʻe i nā kinoea lapalapa a hoʻopaʻa i ka hoʻoheheʻe ʻana.
• ʻO Zinc Borate (Decomposition temp. > 300°C): Hoʻonui i ka hoʻokumu ʻana i ka pehu aniani, hoʻemi i ka uahi a me ka ʻulaʻula.

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

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

Mechanism:

• Hoʻololi ʻia ka Magnesium Hydroxide (Decomposition temp. ~300°C): ʻO ka mālama ʻana i ka ʻili (silane/titanate) e hoʻomaikaʻi i ka hoʻopuehu ʻana a me ka paʻa wela i ka wā e hoʻomoʻa ana i ka wela i ka haʻahaʻa haʻahaʻa.
• Organic Phosphinate (e laʻa, ADP, Thermal stability > 300°C): ʻOi aku 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%).

II. 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 dosage FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): He mea hoʻoheheʻe anti-dripping e pale 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.

III. Nā Hui e ʻalo ai

• Aluminum Hydroxide: Decomposes ma 180-200 ° C (ma lalo o ka PBT temp. o 220-250 ° C), e alakaʻi ana i ka hoʻohaʻahaʻa 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.

IV. Nā Manaʻo Hoʻoikaika Hana

1. Lapaʻau ʻili: E hoʻohana i nā mea hoʻohui silane ma ka magnesium hydroxide a me ka zinc borate e hoʻomaikaʻi i ka hoʻopuehu ʻana a me ka pilina pili.
2. Ka Mana Mana Manaʻo: E hōʻoia i ka mahana decomposition FR> 250 ° C e pale i ka hoʻohaʻahaʻa i ka wā e hana ai.
3. Kaulike Mechanical Property: E hoʻohui i nā nano-fillers (e laʻa, SiO₂) a i ʻole nā ​​mea paʻakikī (e laʻa, POE-g-MAH) e hoʻopaʻi i ka nalowale o ka ikaika.

V. Hoʻohālike maʻamau

VI. Nā ʻāpana hoʻāʻo nui

• 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 hoʻopololei ʻana i nā lakio, hiki ke hoʻokō ʻia kahi ʻōnaehana pale ahi ʻole halogen maikaʻi me ka mālama ʻana i ka hana holoʻokoʻa o PBT.

More info., pls contact lucy@taifeng-fr.com