Hoʻomākaukau ʻana no ka pale ahi ʻole o PBT Halogen

Hoʻomākaukau ʻana no ka pale ahi ʻole o PBT Halogen

No ka hoʻomohala ʻana i kahi ʻōnaehana halogen-free flame retardant (FR) no PBT, he mea nui e kaulike i ka pono o ka flame retardant, ke kūpaʻa wela, ka hoʻohālikelike ʻana o ka mahana hana, a me nā waiwai mechanical.

I. Nā Hui Pū ʻana o ka Pale ʻAna i ke Ahi

1. ʻAluminika Hypophosphite + MCA (Melamine Cyanurate) + Zinc Borate

ʻAno hana:

• ʻO ka Alumini Hypophosphite (Paʻa wela > 300°C): Paipai i ka hoʻokumu ʻana o ke kala i ka pae i hoʻopaʻa ʻia a hoʻokuʻu i nā radical PO· i ka pae kinoea e hoʻopau i nā hopena kaulahao kuni.
• MCA (Decomposition temp. ~300°C): Hoʻokuʻu ka decomposition endothermic i nā kinoea inert (NH₃, H₂O), e hoʻoheheʻe ana i nā kinoea lapalapa a kāohi i ke kahe ʻana o ka heheʻe.
• ʻO Zinc Borate (Decomposition temp. > 300°C): Hoʻonui i ka hoʻokumu ʻana o ke ʻano aniani, e hōʻemi ana i ka uahi a me ka afterglow.

Lākiō i Manaʻo ʻia:
ʻAluminika Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide i hoʻololi ʻia i ka ʻili + Aluminum Hypophosphite + Organic Phosphinate (e laʻa, ADP)

ʻAno hana:

• ʻO ka Magnesium Hydroxide i hoʻololi ʻia (Decomposition temp. ~300°C): Hoʻomaikaʻi ka mālama ʻana i ka ʻili (silane/titanate) i ka hoʻolaha ʻana a me ke kūpaʻa wela ʻoiai e omo ana i ka wela e hoʻohaʻahaʻa i ka mahana o ka mea.
• ʻO ka Phosphinate Organic (e laʻa, ADP, Paʻa wela > 300°C): Mea pale lapalapa kinoea maikaʻi loa, e hana pū ana me nā ʻōnaehana phosphorus-nitrogen.

Lākiō i Manaʻo ʻia:
Makenesium Hydroxide (15-20%) + Alumini Hypophosphite (8-12%) + ADP (5-8%).

II. Nā Synergist Koho

• Nano Clay/Talc (2-3%): Hoʻomaikaʻi i ka maikaʻi o ke kala a me nā waiwai mechanical me ka hoʻemi ʻana i ka nui o ka FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Mea pale i ka kulu ʻana e pale aku i nā kulu ʻā.
• Pauka Silicone (2-4%): Paipai i ka hoʻokumu ʻana o nā ʻā mānoanoa, e hoʻonui ana i ka pale ʻana i ka lapalapa a me ka ʻālohilohi o ka ʻili.

III. Nā Hui Pū ʻana e Pale aku ai

• ʻO ka Aluminum Hydroxide: Hoʻopau ma 180-200°C (ma lalo o ka mahana hana PBT o 220-250°C), e alakaʻi ana i ka hōʻino mua ʻana.
• Magnesium Hydroxide i Hoʻololi ʻole ʻia: Pono ka mālama ʻana i ka ʻili e pale aku i ka hōʻuluʻulu ʻana a me ka palaho wela i ka wā e hana ai.

IV. Nā Manaʻo Hoʻonui Hana

1. Ka Lapaʻau ʻIli: E hoʻohana i nā mea hoʻopili silane ma ka magnesium hydroxide a me ka zinc borate e hoʻoikaika i ka hoʻopuehu ʻana a me ka hoʻopili ʻana o ka interfacial.
2. Ka Mana Mahana Hana: E hōʻoia i ka mahana palaho FR > 250°C e pale aku i ka palaho ʻana i ka wā o ka hana ʻana.
3. Kaulike Waiwai Mekanika: Hoʻohui i nā nano-fillers (e laʻa, SiO₂) a i ʻole nā ​​​​mea hoʻoikaika (e laʻa, POE-g-MAH) e hoʻoponopono no ka nalowale o ka ikaika.

V. Laʻana Hoʻohālikelike Maʻamau

VI. Nā Palena Hoʻāʻo Koʻikoʻi

• Pale ʻana i ke ahi: UL94 V-0 (1.6mm), LOI > 35%.
• Paʻa Wela: Koena TGA > 25% (600°C).
• Nā Waiwai Mekanika: Ikaika tensile > 45 MPa, hopena notched > 4 kJ/m².

Ma ka hoʻonui ʻana i nā lakio, hiki ke hoʻokō ʻia kahi ʻōnaehana pale ahi halogen-free maikaʻi me ka mālama ʻana i ka hana holoʻokoʻa o PBT.

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