PBT Halogen-ọfẹ ina Retardant agbekalẹ

PBT Halogen-ọfẹ ina Retardant agbekalẹ

Lati ṣe agbekalẹ eto idaduro ina ti ko ni halogen (FR) fun PBT, o ṣe pataki lati dọgbadọgba ṣiṣe idaduro ina, iduroṣinṣin igbona, ibaramu iwọn otutu sisẹ, ati awọn ohun-ini ẹrọ.

I. Awọn akojọpọ Idaduro Ina mojuto

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

Ilana:

• Aluminiomu Hypophosphite (Iduroṣinṣin gbona> 300 ° C): Ṣe igbega dida eedu ni ipele ti dipọ ati tu PO · radicals ni ipele gaasi lati da gbigbi awọn aati pq ijona duro.
• MCA (iwọn otutu ibajẹ. ~ 300°C): Ijẹdajẹ Endothermic tu awọn gaasi inert (NH₃, H₂O), diluting flammable gas ati didimu yo didi.
• Zinc Borate (iwọn otutu ibajẹ> 300 ° C): Ṣe ilọsiwaju dida eedu gilasi, idinku ẹfin ati didan lẹhin.

Ipin Iṣeduro:
Aluminiomu Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide + Aluminiomu Hypophosphite + Organic Phosphinate (fun apẹẹrẹ, ADP) ti a ti yipada.

Ilana:

• Iṣuu magnẹsia Hydroxide ti a ṣe atunṣe (iwọn otutu ibajẹ. ~ 300 ° C): Itọju oju-ara (silane / titanate) ṣe itọka ati imuduro igbona nigba ti o nmu ooru si iwọn otutu ohun elo.
• Organic Phosphinate (fun apẹẹrẹ, ADP, Iduroṣinṣin gbona> 300°C): Idaduro ina gaasi-ipele gaasi ti o munadoko pupọ, mimuuṣiṣẹpọ pẹlu awọn eto irawọ owurọ-nitrogen.

Ipin Iṣeduro:
Iṣuu magnẹsia Hydroxide (15-20%) + Aluminiomu Hypophosphite (8-12%) + ADP (5-8%).

II. Iyan Synergists

• Nano Clay/Talc (2-3%): Ṣe ilọsiwaju didara char ati awọn ohun-ini ẹrọ lakoko ti o dinku iwọn lilo FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Aṣoju atako-dripping lati ṣe idiwọ sisun awọn droplets.
• Powder Silikoni (2-4%): Ṣe igbega idasile eedu ipon, imudara idaduro ina ati didan dada.

III. Awọn akojọpọ lati Yẹra

• Aluminiomu Hydroxide: Decomposes ni 180-200 ° C (ni isalẹ PBT processing temp. ti 220-250 ° C), yori si tọjọ ibaje.
• Iṣuu magnẹsia Hydroxide ti a ko yipada: Nilo itọju dada lati ṣe idiwọ agglomeration ati jijẹ gbigbona lakoko sisẹ.

IV. Awọn iṣeduro Imudara Iṣẹ

1. Itọju Ilẹ: Lo awọn aṣoju idapọ silane lori iṣuu magnẹsia hydroxide ati zinc borate lati jẹki pipinka ati isunmọ interfacial.
2. Iṣakoso iwọn otutu ti n ṣiṣẹ: Rii daju iwọn otutu ibajẹ FR> 250°C lati yago fun ibajẹ lakoko sisẹ.
3. Iwontunws.funfun Ohun-ini Mekanical: Ṣafikun awọn ohun-elo nano-fillers (fun apẹẹrẹ, SiO₂) tabi awọn ohun tougheners (fun apẹẹrẹ, POE-g-MAH) lati sanpada fun pipadanu agbara.

V. Apeere Ilana Aṣoju

VI. Awọn paramita Idanwo bọtini

• Idaduro ina: UL94 V-0 (1.6mm), LOI> 35%.
• Iduroṣinṣin Ooru: Iyoku TGA> 25% (600°C).
• Awọn ohun-ini ẹrọ: Agbara fifẹ> 45 MPa, ipa akiyesi> 4 kJ/m².

Nipa imudara awọn ipin, eto idaduro ina halogen ti o munadoko le ṣee ṣe lakoko mimu iṣẹ ṣiṣe gbogbogbo PBT.

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