PBT Halogen-Yubusa Flame Retardant Yerekana

PBT Halogen-Yubusa Flame Retardant Yerekana

Kugirango uhindure neza uburyo bwa halogen-flame retardants ya PBT, ni ngombwa kuringaniza imikorere ya flame retardancy, ihindagurika ryumuriro, gutunganya ubushyuhe, hamwe nubukanishi. Hasi nuburyo bwiza bwo guhuza ingamba hamwe nisesengura ryingenzi:

1. Core Flame Retardant Ihuriro

Icya 1: Aluminium Hypophosphite + MCA (Melamine Cyanurate) + Borate Zinc

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 (Kwangirika kuri ~ 300 ° C): Kwangirika kwa Endothermic kurekura imyuka ya inert (NH₃, H₂O), kugabanya imyuka yaka no guhagarika ibitonyanga.
• Zinc Borate (Kwangirika> 300 ° C): Yongera imiterere ya char ibirahuri, igabanya umwotsi na nyuma.

Ikigereranyo gisabwa:

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

Ihitamo rya 2: Ubuso bwahinduwe na Magnesium Hydroxide + Aluminium Hypophosphite + Fosifine kama (urugero, ADP)

Urwego:

• Hydroxide ya Magnesium yahinduwe (Kwangirika ~ 300 ° C): Kuvura hejuru (silane / titanate) biteza imbere gukwirakwiza no gutuza ubushyuhe; gukonjesha endothermic kugabanya ubushyuhe bwibintu.
• Fosifike kama (urugero, ADP, ituze ryumuriro> 300 ° C): Gukoresha gaze-fase ya flam retardant, ikorana na sisitemu ya fosifore-azote.

Ikigereranyo gisabwa:

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

2. Guhuza ibyifuzo

• Nano-ibumba / Talc (2-3%): Itezimbere ubuziranenge bwa char hamwe nubukanishi mugihe ugabanya imizigo yumuriro.
• PTFE (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.

3. Kwishyira hamwe Kwirinda

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

4. Inama zo Kunoza imikorere

• Kuvura Ubuso: Koresha ibikoresho byo guhuza silane kuri Mg (OH) ₂ na zinc borate kugirango utezimbere no guhuza imiyoboro.
• Gutunganya Ubushyuhe: Menya neza ko flame retardant decomposition ubushyuhe> 250 ° C kugirango wirinde kwangirika.
• Kuringaniza Umutungo wa Mechanical: Indishyi zo gutakaza imbaraga ukoresheje nano-yuzuza (urugero, SiO₂) cyangwa gukomera (urugero, POE-g-MAH).

5. Urugero

6. 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.

Mugutunganya neza ibipimo, imikorere-ya halogen-idafite flame retardance irashobora kugerwaho mugihe PBT ikora neza.

More info., pls send email to lucy@taifeng-fr.com