Ifomyula yesalathiso esithintela ilangatye esingena-PBT Halogen

Ifomyula yesalathiso esithintela ilangatye esingena-PBT Halogen

Ukuze kuphuculwe indlela yokwenziwa kwezinto ezithintela umlilo ezingenayo i-halogen kwi-PBT, kubalulekile ukulinganisela ukusebenza kakuhle kokuthintelwa komlilo, uzinzo lobushushu, ukuhambelana kobushushu bokucubungula, kunye neempawu zoomatshini. Apha ngezantsi kukho icebo elilungisiweyo lokudibanisa izinto kunye nohlalutyo oluphambili:

1. Iindidi zeCore Flame Retardant

Ukhetho 1: I-Aluminium Hypophosphite + I-MCA (iMelamine Cyanurate) + I-Zinc Borate

Indlela yokusebenza:

• I-Aluminium Hypophosphite (Uzinzo lweThermal > 300°C): Ikhuthaza ukwakheka kwe-char kwisigaba esixineneyo kwaye ikhupha ii-PO· radicals kwisigaba segesi ukuze iphazamise ukusabela kwe-combustion chain.
• I-MCA (Ukubola kwi ~300°C): Ukubola kwe-Endothermic kukhupha iigesi ezingasebenziyo (NH₃, H₂O), kunciphisa iigesi ezinokutsha kwaye kuthintele ukuvuza okunyibilikayo.
• I-Zinc Borate (Ukubola > 300°C): Iphucula ukwakheka kwe-char efana neglasi, inciphisa umsi kunye nokukhanya okungasemva.

Isilinganiselo Esicetyiswayo:

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

Ukhetho 2: I-Magnesium Hydroxide eGuquliweyo kumphezulu + i-Aluminium Hypophosphite + i-Organic Phosphinate (umz., i-ADP)

Indlela yokusebenza:

• I-Magnesium Hydroxide eguquliweyo (Ukubola ~300°C): Unyango lomphezulu (i-silane/titanate) luphucula ukusasazeka kunye nokuzinza kobushushu; ukupholisa kwe-endothermic kunciphisa ubushushu bezinto.
• I-Organic Phosphinate (umz., i-ADP, uzinzo lobushushu > 300°C): Isebenza kakuhle kakhulu ekuthinteleni ilangatye lesigaba segesi, isebenzisana neenkqubo ze-phosphorus-nitrogen.

Isilinganiselo Esicetyiswayo:

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

2. Abantu abasebenzisana ngokuzithandela

• I-Nano-clay/Talc (2-3%): Iphucula umgangatho we-char kunye neempawu zoomatshini ngelixa inciphisa umthwalo othintela ilangabi.
• I-PTFE (0.2-0.5%): Isixhobo esithintela ukuvuza kwamanzi ukuthintela ukutsha kwamathontsi.
• Umgubo weSilicone (2-4%): Ukhuthaza ukwakheka kwetshani exineneyo, uphucula ukudamba komlilo kunye nokukhazimla komphezulu.

3. Iindidi ekufanele uziphephe

• I-Aluminium Hydroxide: Iyabola kwi-180-200°C (ngaphantsi kobushushu bokucubungula be-PBT obuyi-220-250°C), nto leyo ekhokelela ekuwohlokeni kwangaphambi kwexesha.
• I-Magnesium Hydroxide engaguqulwanga: Ifuna unyango lomphezulu ukuze kuthintelwe ukuhlangana kunye nokubola kobushushu ngexesha lokucubungula.

4. Iingcebiso zokuphucula ukusebenza

• Unyango Lomphezulu: Sebenzisa ii-silane coupling agents kwi-Mg(OH)₂ kunye ne-zinc borate ukuphucula ukusasazeka kunye nokubopha phakathi kwe-interfacial.
• Ulawulo Lobushushu Bokucubungula: Qinisekisa ukuba ubushushu bokubola obugcina ilangatye bungaphezulu kwama-250°C ukuze kuthintelwe ukubola.
• Ibhalansi yePropati yoMechanical: Buyisela ukulahleka kwamandla usebenzisa ii-nano-fillers (umz., i-SiO₂) okanye ii-tougheners (umz., i-POE-g-MAH).

5. Umzekelo Wokwenziwa

6. IiMetriki zoVavanyo oluPhambili

• Ukuthintela ilangatye: UL94 V-0 (1.6mm), LOI > 35%.
• Uzinzo lobushushu: Intsalela ye-TGA > 25% (600°C).
• Iimpawu zoomatshini: Amandla okutsalwa > 45 MPa, impembelelo eqingqiweyo > 4 kJ/m².

Ngokulungisa ii-ratios, ukurhoxiswa komlilo okungenalo i-halogen okusebenzayo kakhulu kunokufezekiswa ngelixa kugcinwa ukusebenza kwe-PBT iyonke.

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