Tsarin PBT Mai Hana Wuta Ba Tare Da Halogen Ba

Tsarin PBT Mai Hana Wuta Ba Tare Da Halogen Ba

Domin samar da tsarin hana harshen wuta mara halogen (FR) don PBT, yana da mahimmanci a daidaita ingancin hana harshen wuta, kwanciyar hankali na zafi, dacewa da zafin sarrafawa, da kuma halayen injina.

I. Haɗin Hadin Kai na Flame

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

Tsarin aiki:

• Aluminum Hypophosphite (Tsawon zafin jiki > 300°C): Yana haɓaka samuwar char a cikin matakin da aka taƙaice kuma yana fitar da PO· radicals a cikin matakin iskar gas don katse halayen sarkar ƙonewa.
• MCA (Zafin Rushewa ~300°C): Rushewar endothermic yana fitar da iskar gas mara aiki (NH₃, H₂O), yana narkar da iskar gas mai ƙonewa da kuma rage digawar narkewar ruwa.
• Zinc Borate (Zafin ruɓewa > 300°C): Yana ƙara yawan kamannin gilashi, yana rage hayaki da hasken bayan an yi amfani da shi.

Rabon da aka ba da shawarar:
Aluminum Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide da aka Gyara a Sama + Aluminum Hypophosphite + Organic Phosphinate (misali, ADP)

Tsarin aiki:

• Magnesium Hydroxide da aka Gyara (Zafin Rushewa ~ 300°C): Maganin saman jiki (silane/titanate) yana inganta watsawa da kwanciyar hankali na zafi yayin da yake shan zafi zuwa rage zafin jiki.
• Phosphinate na Halitta (misali, ADP, Daidaiton zafi > 300°C): Mai hana harshen wuta mai ƙarfi sosai, wanda ke aiki tare da tsarin phosphorus-nitrogen.

Rabon da aka ba da shawarar:
Magnesium Hydroxide (15-20%) + Aluminum Hypophosphite (8-12%) + ADP (5-8%).

II. Masu Zaɓaɓɓun Hadin Gwiwa

• Nano Clay/Talc (2-3%): Yana inganta ingancin char da halayen injiniya yayin da yake rage yawan FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Maganin hana digowa don hana ɗigon ƙonawa.
• Foda ta Silicone (2-4%): Yana haɓaka samuwar ƙwaya mai yawa, yana ƙara ƙarfin harshen wuta da sheƙi a saman.

III. Haɗuwa da Za a Guji

• Aluminum Hydroxide: Yana rugujewa a zafin 180-200°C (ƙasa da zafin aikin PBT na 220-250°C), wanda ke haifar da lalacewa da wuri.
• Magnesium Hydroxide mara gyara: Yana buƙatar maganin saman don hana haɗuwa da ruɓewar zafi yayin sarrafawa.

IV. Shawarwari Kan Inganta Aiki

1. Maganin Fuskar Sama: Yi amfani da sinadaran haɗa silane akan magnesium hydroxide da zinc borate don haɓaka watsawa da haɗin fuska.
2. Sarrafa Zafin Jiki: Tabbatar da zafin FR ya narke > 250°C don guje wa lalacewa yayin sarrafawa.
3. Daidaiton Kadarorin Inji: Haɗa nano-fillers (misali, SiO₂) ko tougheners (misali, POE-g-MAH) don rama asarar ƙarfi.

V. Misalin Tsarin Nau'i Na Musamman

VI. Ma'aunin Gwaji Masu Mahimmanci

• Rashin ƙarfin wuta: UL94 V-0 (1.6mm), LOI > 35%.
• Kwanciyar Hankali: Ragowar TGA > 25% (600°C).
• Halayen Inji: Ƙarfin tauri > 45 MPa, tasirin da aka yi da ƙarfi > 4 kJ/m².

Ta hanyar inganta rabon, ana iya cimma ingantaccen tsarin hana harshen wuta mara halogen yayin da ake ci gaba da aikin PBT gaba ɗaya.

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