Uburyo bwo gukurura umuriro utagira halogen (PBT Halogen)

Uburyo bwo gukurura umuriro utagira halogen (PBT Halogen)

Kugira ngo hakorwe sisitemu yo kugabanya umuriro idafite halogen (FR) kuri PBT, ni ngombwa kuringaniza imikorere myiza y’umuriro udashobora guhindagurika, ubushyuhe budahindagurika, ubushyuhe bujyanye n’uburyo ikorwa, n’imiterere ya mekanike.

I. Uruvange rw'ibice bigabanya umuriro

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

Uburyo:

• Hypophosphite ya Aluminium (Ubushyuhe buhamye > 300°C): Itera imbere kurema kwa char mu gice cyo gufungana kandi ikarekura PO· radicals mu gice cya gaze kugira ngo ihagarike ibikorwa byo gutwika.
• MCA (Ubushyuhe bwo kubora ~300°C): Kubora kw'ingufu zo mu nda birekura imyuka idakora (NH₃, H₂O), bigagabanya imyuka ishobora gushya kandi bigahagarika amazi ashongesha.
• Zinc Borate (Ubushyuhe bwo kubora > 300°C): Yongera imiterere y'ikirahure, ikagabanya umwotsi n'urumuri ruturutse inyuma.

Igipimo cyatanzwe:
Hypophosphite ya Aluminium (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide yahinduwe ku buso + Aluminium Hypophosphite + Organic Phosphinate (urugero, ADP)

Uburyo:

• Magnesium Hydroxide yahinduwe (Ubushyuhe bwo kubora ~ 300°C): Gutunganya ubuso (silane / titanate) binoza ikwirakwira ry'amazi n'ubushyuhe mu gihe bigabanya ubushyuhe bw'ibikoresho.
• Fosfeneti y'umwimerere (urugero, ADP, Gukomera ku bushyuhe > 300°C): Ikora neza cyane mu gukumira umuriro mu gihe cya gaze, ikorana na sisitemu ya fosfene na azote.

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

II. Abahuza b'uburyo bwo guhitamo

• Nano Clay/Talc (2-3%): Yongera ubwiza bw'icyatsi n'imiterere ya mekanike mu gihe igabanya ingano ya FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Irinda gutonyanga kugira ngo idatwika ibitonyanga.
• Ifu ya Silicone (2-4%): Itera imbere kurema udukoko twinshi, yongera ubushyuhe bw'umuriro n'ubushyuhe bw'ubuso.

III. Uruvange rwo kwirinda

• Aluminium Hydroxide: Ibora kuri 180-200°C (munsi y'ubushyuhe bwo gutunganya PBT bwa 220-250°C), bigatuma ibora imburagihe.
• Magnesium Hydroxide idahinduwe: Isaba gusukurwa ku buso kugira ngo hirindwe ko ibintu bihinduka no kubora kw'ubushyuhe mu gihe cyo gutunganya.

IV. Inama ku kunoza imikorere

1. Uburyo bwo kuvura ubuso: Koresha imiti ihuza silane kuri magnesium hydroxide na zinc borate kugira ngo wongere uburyo bwo gukwirakwiza no guhuza hagati y’ibice.
2. Kugenzura ubushyuhe bwo gutunganya: Menya neza ko ubushyuhe bwa FR bwo kubora bungana na dogere selisiyusi > 250 kugira ngo wirinde kwangirika mu gihe cyo gutunganya.
3. Ingano y'Imiterere ya Mekaniki: Shyiramo nano-fillers (urugero, SiO₂) cyangwa tougheners (urugero, POE-g-MAH) kugira ngo wishyure igabanuka ry'imbaraga.

V. Urugero rusanzwe rwo gushushanya

VI. Ibipimo by'ingenzi by'ibizamini

• Ingufu z'umuriro: UL94 V-0 (1.6mm), LOI > 35%.
• Ubudahangarwa bw'ubushyuhe: Ibisigazwa bya TGA > 25% (600°C).
• Imiterere ya Mekanike: Ingufu zo gukurura > 45 MPa, ingaruka z'ingufu > 4 kJ/m².

Mu kunoza ibipimo, sisitemu ikora neza igabanya umuriro idafite halogen ishobora kugerwaho mu gihe PBT ikomeza gukora neza muri rusange.

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