I-PBT Halogen-Free Flame Retardant Retardant Formulation

I-PBT Halogen-Free Flame Retardant Retardant Formulation

Ukuze kuthuthukiswe ukwakheka kwama-flame retardants angenawo ama-halogen e-PBT, kubalulekile ukulinganisa ukusebenza kahle kokubambezeleka komlilo, ukuzinza kokushisa, ukuhambisana kokucubungula izinga lokushisa, kanye nezakhiwo zemishini. Ngezansi isu elihlanganisiwe lokuhlanganisa elinokuhlaziya okubalulekile:

1. Inhlanganisela Eyi-Core Flame Retardant

Inketho 1: I-Aluminium Hypophosphite + MCA (Melamine Cyanurate) + I-Zinc Borate

Indlela:

• I-Aluminium Hypophosphite (Ukuzinza kokushisa > 300°C): Iphromotha ukwakheka kwe-char esigabeni esijiyile futhi ikhiphe ama-PO· radicals esigabeni segesi ukuze iphazamise ukusabela kweketango lomlilo.
• I-MCA (Ukubola ku-~300°C): Ukubola kwe-endothermic kukhipha amagesi angenayo (NH₃, H₂O), kuncibilikisa amagesi avuthayo kanye nokucindezela ukuconsa okuncibilikayo.
• I-Zinc Borate (Ukubola > 300°C): Ithuthukisa ukwakheka kwe-char eyingilazi, yehlisa intuthu kanye nokukhanya okungemuva.

Isilinganiso Esinconyiwe:

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

Inketho 2: I-Surface-Modified Magnesium Hydroxide + Aluminium Hypophosphite + Organic Phosphinate (isb, ADP)

Indlela:

• I-Magnesium Hydroxide eguquliwe (Ukubola ~ 300 ° C): Ukwelashwa kwendawo (silane/titanate) kuthuthukisa ukuhlakazeka nokuzinza kokushisa; ukupholisa i-endothermic kwehlisa izinga lokushisa lempahla.
• I-Organic Phosphinate (isb., i-ADP, ukuqina kokushisa > 300°C): Isebenza kahle kakhulu igas-phase flame retardant, ehambisana nezinhlelo ze-phosphorus-nitrogen.

Isilinganiso Esinconyiwe:

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

2. Ama-Synergists Okuzikhethela

• I-Nano-clay/Talc (2-3%): Ithuthukisa ikhwalithi ye-char kanye nezakhiwo zemishini ngenkathi yehlisa ukulayishwa kwe-flame retardant.
• I-PTFE (0.2-0.5%): I-ejenti yokunqanda ukuconsa ukuvimbela amaconsi avuthayo.
• I-Silicone Powder (2-4%): Iphromotha ukwakheka kwe-char elicinene, ithuthukisa ukuncipha komlilo kanye nesicwebezelisi sendawo.

3. Inhlanganisela Okufanele Uyigweme

• I-Aluminium Hydroxide: Ibola ku-180-200 ° C (ngaphansi kwezinga lokushisa lokucubungula i-PBT lika-220-250 ° C), okuholela ekulimazeni ngaphambi kwesikhathi.
• I-Magnesium Hydroxide Engashintshiwe: Idinga ukwelashwa okungaphezulu ukuze kuvinjelwe ukuhlangana nokubola okushisayo phakathi nokucubungula.

4. Amathiphu Okuthuthukisa Ukusebenza

• Ukwelapha Okungaphezulu: Sebenzisa i-silane coupling agents ku-Mg(OH)₂ kanye ne-zinc borate ukuze uthuthukise ukuhlakazeka nokuhlangana kobuso.
• Kucutshungulwa Ukulawulwa Kwezinga Lokushisa: Qinisekisa ukuthi izinga lokushisa elinganqamuki ilangabi > 250°C ukugwema ukuwohloka.
• Ibhalansi Yempahla Yomshini: Ukunxephezela ukulahlekelwa amandla usebenzisa ama-nano-filler (isb., SiO₂) noma ama-tougheners (isb, i-POE-g-MAH).

5. Ukwakhiwa Kwesibonelo

6. Amamethrikhi Okuhlola Abalulekile

• I-Flame Retadancy: UL94 V-0 (1.6mm), LOI > 35%.
• Ukuzinza Kokushisa: Izinsalela ze-TGA> 25% (600°C).
• Izakhiwo Zemishini: Amandla aqinile > 45 MPa, umthelela we-notched > 4 kJ/m².

Ngokulungisa kahle izilinganiso, ukusebenza kahle okuphezulu kwe-halogen-free flame retardancy kungafinyelelwa ngenkathi kugcinwa ukusebenza kukonke kwe-PBT.

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