Tsarin Nazari Mai Hana Wutar Lantarki Ba Tare da Halogen Ba na PBT

Tsarin Nazari Mai Hana Wutar Lantarki Ba Tare da Halogen Ba na PBT

Domin inganta tsarin samar da na'urorin hana harshen wuta marasa halogen don PBT, yana da mahimmanci a daidaita ingancin hana harshen wuta, kwanciyar hankali na zafi, dacewa da yanayin zafi, da kuma halayen injina. Ga wata dabarar haɗakarwa da aka inganta tare da mahimman bincike:

1. Haɗuwa da Masu Rage Wutar Lantarki na Core

Zaɓi na 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 (Rushewa a ~300°C): Rushewar endothermic yana fitar da iskar gas mara aiki (NH₃, H₂O), yana narkar da iskar gas mai kama da wuta da kuma rage digawar narkewar ruwa.
• Zinc Borate (Rushewa > 300°C): Yana inganta samuwar kwalaben 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%).

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

Tsarin aiki:

• Magnesium Hydroxide da aka Gyara (Rushewa ~ 300°C): Maganin saman jiki (silane/titanate) yana inganta watsawa da kwanciyar hankali na zafi; sanyayawar endothermic yana rage zafin abu.
• Phosphinate na Halitta (misali, ADP, kwanciyar hankali na 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%).

2. Masu ba da haɗin gwiwa na zaɓi

• Nano-laka/Talc (2-3%): Yana inganta ingancin char da halayen injiniya yayin da yake rage lodin da ke hana wuta.
• PTFE (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.

3. Haɗuwa da Ya Kamata 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.

4. Nasihu Kan Inganta Aiki

• Maganin Fuskar Sama: Yi amfani da sinadaran haɗin silane akan Mg(OH)₂ da zinc borate don haɓaka watsawa da haɗin fuska.
• Sarrafa Zafin Jiki: Tabbatar da cewa zafin da ke hana harshen wuta ya yi zafi > 250°C domin guje wa lalacewa.
• Daidaiton Kadarorin Inji: rama asarar ƙarfi ta amfani da nano-fillers (misali, SiO₂) ko tougheners (misali, POE-g-MAH).

5. Misali Tsarin

6. Ma'aunin Gwaji Mai Muhimmanci

• 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 daidaita rabon, ana iya cimma ingantaccen juriya ga harshen wuta mara halogen yayin da ake ci gaba da aikin PBT gaba ɗaya.

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