PBT Halogen-Free Flame Retardant Formulation

PBT Halogen-Free Flame Retardant Formulation

Don haɓaka tsarin hana jinkirin harshen wuta na halogen (FR) don PBT, yana da mahimmanci don daidaita ingancin jinkirin harshen wuta, kwanciyar hankali na zafi, daidaita yanayin zafin jiki, da kaddarorin injina.

I. Haɗaɗɗen Ƙunƙarar Harshen Harshe

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

Makaniyanci:

• Aluminum Hypophosphite (Tsarin zafin jiki> 300 ° C): Yana haɓaka haɓakar char a cikin lokacin da aka ƙunsa kuma yana sakin PO · radicals a cikin lokacin gas don katse halayen sarkar konewa.
• MCA (Zazzabi ~ 300 ° C): Bazuwar Endothermic yana fitar da iskar gas mara amfani (NH₃, H₂O), yana diluting gas mai ƙonewa da kuma hana narkewar narkewa.
• Zinc Borate (Tsarin lalata> 300°C): Yana haɓaka samuwar char mai gilashi, yana rage hayaki da bayan haske.

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

2. Maganin Magnesium Hydroxide da Aka Canja Sama + Aluminum Hypophosphite + Organic Phosphinate (misali, ADP)

Makaniyanci:

• Magnesium Hydroxide da aka gyara (Yanayin lalata. ~ 300 ° C): Jiyya na sama (silane / titanate) yana inganta tarwatsawa da kwanciyar hankali na thermal yayin da yake ɗaukar zafi zuwa ƙananan zafin jiki.
• Organic Phosphinate (misali, ADP, Thermal kwanciyar hankali> 300°C): Ingantacciyar iskar gas-lokacin harshen wuta, aiki tare da tsarin phosphorus-nitrogen.

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

II. Zaɓuɓɓuka Synergists

• Nano Clay/Talc (2-3%): Yana haɓaka ingancin char da kaddarorin injina yayin rage adadin FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Mai hana-dripping don hana ɗigon ƙonawa.
• Foda Silicone (2-4%): Yana haɓaka haɓakar char mai yawa, haɓaka jinkirin harshen wuta da sheki.

III. Haɗuwa don Gujewa

• Aluminum Hydroxide: Rushewa a 180-200C (ƙasa da yanayin sarrafa PBT na 220-250C), yana haifar da lalacewa da wuri.
• Magnesium Hydroxide wanda ba a canza shi ba: Yana buƙatar jiyya na sama don hana haɓakawa da bazuwar thermal yayin aiki.

IV. Shawarwari na Inganta Ayyuka

1. Jiyya na saman: Yi amfani da silane haɗin haɗin gwiwa akan magnesium hydroxide da zinc borate don haɓaka tarwatsawa da haɗin haɗin fuska.
2. Sarrafa Yanayin Zazzabi: Tabbatar da yanayin bazuwar FR> 250°C don gujewa lalacewa yayin aiki.
3. Ma'auni na Kayan Injini: Haɗa nano-fillers (misali, SiO₂) ko masu ƙarfi (misali, POE-g-MAH) don rama asarar ƙarfi.

V. Misalin Tsara Na Musamman

VI. Mabuɗin Gwajin Maɓalli

• Jinkirin harshen wuta: UL94 V-0 (1.6mm), LOI> 35%.
• Ƙarfafawar zafi: ragowar TGA> 25% (600°C).
• Kayayyakin Injini: Ƙarfin juzu'i> 45 MPa, tasiri mara kyau> 4 kJ/m².

Ta hanyar inganta ma'auni, za'a iya samun ingantaccen tsarin hana harshen wuta mara halogen yayin kiyaye aikin PBT gabaɗaya.

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