Ukwakheka Kwereferensi Engadingi I-Halogen E-PBT

Ukwakheka Kwereferensi Engadingi I-Halogen E-PBT

Ukuze kuthuthukiswe ukwakheka kwezithiyo zomlilo ezingenayo i-halogen ze-PBT, kubalulekile ukulinganisela ukusebenza kahle kokuthiyo zomlilo, ukuzinza kokushisa, ukuhambisana kwezinga lokushisa lokucubungula, kanye nezakhiwo zemishini. Ngezansi isu elihlanganisiwe elilungiselelwe ngokuhlaziya okubalulekile:

1. Izinhlanganisela Ezivimbela Umlilo Eziyinhloko

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

Indlela yokusebenza:

• I-Aluminium Hypophosphite (Ukuqina kokushisa > 300°C): Ikhuthaza ukwakheka kwe-char esigabeni esihlanganisiwe futhi ikhipha ama-PO· radicals esigabeni segesi ukuze iphazamise ukusabela kweketanga lokushiswa.
• I-MCA (Ukubola ku-~300°C): Ukubola kwe-Endothermic kukhipha amagesi angasasebenzi (NH₃, H₂O), okunciphisa amagesi avuthayo futhi kuvimbele ukuvuza okuncibilikayo.
• I-Zinc Borate (Ukubola > 300°C): Ithuthukisa ukwakheka kwe-char efana nengilazi, inciphisa intuthu kanye nokukhanya kwangemuva.

Isilinganiso Esinconyiwe:

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

Inketho 2: I-Magnesium Hydroxide Eguquliwe Ngaphezulu + I-Aluminium Hypophosphite + I-Organic Phosphinate (isib., i-ADP)

Indlela yokusebenza:

• I-Magnesium Hydroxide Eguquliwe (Ukubola ~300°C): Ukwelashwa kwendawo (i-silane/titanate) kuthuthukisa ukuhlakazeka kanye nokuqina kokushisa; ukupholisa kwe-endothermic kwehlisa izinga lokushisa lezinto.
• I-Phosphinate Engokwemvelo (isb., i-ADP, ukuzinza kokushisa > 300°C): I-gas-phase flame retardant esebenza kahle kakhulu, isebenzisana nezinhlelo ze-phosphorus-nitrogen.

Isilinganiso Esinconyiwe:

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

2. Ama-Synergists angakhethwa

• I-Nano-clay/Talc (2-3%): Ithuthukisa ikhwalithi ye-char kanye nezakhiwo zemishini ngenkathi inciphisa umthwalo ovimbela ilangabi.
• I-PTFE (0.2-0.5%): I-ejenti elwa nokuconsa ukuze kuvinjelwe ukusha kwamaconsi.
• I-Silicone Powder (2-4%): Ikhuthaza ukwakheka kwe-char ejiyile, ithuthukisa ukubambezeleka komlilo kanye nokucwebezela kobuso.

3. Izinhlanganisela Okufanele Zigwenywe

• I-Aluminium Hydroxide: Iyabola ku-180-200°C (ngaphansi kwezinga lokushisa lokucubungula i-PBT elingu-220-250°C), okuholela ekuwohlokeni kwangaphambi kwesikhathi.
• I-Magnesium Hydroxide Engashintshiwe: Idinga ukwelashwa kwendawo ukuze kuvinjelwe ukuhlangana kanye nokubola kokushisa ngesikhathi sokucubungula.

4. Amathiphu Okuthuthukisa Ukusebenza

• Ukwelashwa Komphezulu: Sebenzisa ama-ejenti okuhlanganisa i-silane ku-Mg(OH)₂ kanye ne-zinc borate ukuze uthuthukise ukusabalala kanye nokubopha okuphakathi.
• Ukulawulwa Kokushisa Kokucubungula: Qinisekisa ukuthi izinga lokushisa lokubola elibamba ilangabi lingaphezulu kuka-250°C ukuze ugweme ukubola.
• Ibhalansi Yempahla Yomshini: Khokhela ukulahlekelwa amandla usebenzisa ama-nano-fillers (isb., i-SiO₂) noma ama-tougheners (isb., i-POE-g-MAH).

5. Isibonelo Sokwakheka

6. Amamethrikhi Okuhlola Okubalulekile

• Ukumelana Nokushisa Komlilo: UL94 V-0 (1.6mm), LOI > 35%.
• Ukuzinza Kokushisa: Izinsalela ze-TGA > 25% (600°C).
• Izakhiwo Zomshini: Amandla okunamathela > 45 MPa, umthelela onamachashazi > 4 kJ/m².

Ngokulungisa kahle izilinganiso, ukuncipha komlilo okungenalo i-halogen okusebenzayo kakhulu kungafinyelelwa ngenkathi kugcinwa ukusebenza kwe-PBT iyonke.

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