PBT Halogen-Yubusa Flame Retardant

PBT Halogen-Yubusa Flame Retardant

Gutezimbere halogen idafite flame retardant (FR) sisitemu ya PBT, ni ngombwa kuringaniza imikorere ya flame retardancy, ihindagurika ryumuriro, gutunganya ubushyuhe, hamwe nubukanishi.

I. Core Flame Retardant Ihuriro

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

Urwego:

• Aluminium Hypophosphite (Ubushyuhe bwa Thermal> 300 ° C): Itera imbere gushiraho char mugice cyegeranye kandi ikarekura PO · radicals mugice cya gaze kugirango ihagarike imyuka yaka.
• MCA.
• Zinc Borate (Kwangirika temp.> 300 ° C): Yongera imiterere yikirahure, kugabanya umwotsi na nyuma.

Ikigereranyo gisabwa:
Aluminium Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Ubuso bwahinduwe na Magnesium Hydroxide + Aluminium Hypophosphite + Fosifike kama (urugero, ADP)

Urwego:

• Magnesium Hydroxide Yahinduwe (Tempomposition temp. ~ 300 ° C): Kuvura hejuru (silane / titanate) biteza imbere gukwirakwiza no gutuza ubushyuhe mugihe bikurura ubushyuhe kugirango ubushyuhe bwibintu bugabanuke.
• Fosifine kama (urugero, ADP, Ubushyuhe bwumuriro> 300 ° C): Gukoresha gaze-fase ikora neza cyane, ikomatanya na sisitemu ya fosifore-azote.

Ikigereranyo gisabwa:
Magnesium Hydroxide (15-20%) + Aluminium Hypophosphite (8-12%) + ADP (5-8%).

II. Guhitamo

• Nano Ibumba / Talc (2-3%): Itezimbere ubwiza bwa char hamwe nubukanishi mugihe ugabanya dosiye ya FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Umuti urwanya ibitonyanga kugirango wirinde gutwika ibitonyanga.
• Ifu ya Silicone (2-4%): Itezimbere imiterere ya char yuzuye, yongerera umuriro umuriro hamwe nuburabyo.

III. Kwishyira hamwe Kwirinda

• Hydroxide ya Aluminium: Yangirika kuri 180-200 ° C (munsi ya PBT itunganya ubushyuhe bwa 220-250 ° C), biganisha ku kwangirika imburagihe.
• Hydroxide ya Magnesium idahinduwe: Irasaba kuvura hejuru kugirango wirinde agglomeration hamwe nubushyuhe bwumuriro mugihe cyo gutunganya.

IV. Ibyifuzo byo Kunoza imikorere

1. Kuvura Ubuso: Koresha ibikoresho byo guhuza silane kuri hydroxide ya magnesium na zinc borate kugirango utezimbere no guhuza imiyoboro.
2. Gutunganya Ubushyuhe: Kureba niba ubushyuhe bwa FR bwangirika> 250 ° C kugirango wirinde kwangirika mugihe cyo gutunganya.
3. Kuringaniza imitungo ya mashini: Shyiramo nano-yuzuza (urugero, SiO₂) cyangwa ibikomerezwa (urugero, POE-g-MAH) kugirango yishyure imbaraga.

V. Urugero rusanzwe

VI. Ibipimo by'ibizamini by'ingenzi

• Kubura umuriro: UL94 V-0 (1,6mm), LOI> 35%.
• Ubushyuhe bwumuriro: ibisigisigi bya TGA> 25% (600 ° C).
• Ibikoresho bya mashini: Imbaraga zingana> 45 MPa, ingaruka zidasanzwe> 4 kJ / m².

Mugutezimbere ibipimo, sisitemu ikora ya halogene idafite flame retardant sisitemu irashobora kugerwaho mugihe PBT ikora neza.

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