Usoro PBT nke na-anaghị agba ọkụ nke na-enweghị halogen

Usoro PBT nke na-anaghị agba ọkụ nke na-enweghị halogen

Iji mepụta sistemụ ihe na-egbochi ọkụ na-enweghị halogen (FR) maka PBT, ọ dị mkpa ịhazi arụmọrụ nke ihe na-egbochi ọkụ, nkwụsi ike okpomọkụ, ndakọrịta okpomọkụ nhazi, na njirimara igwe.

I. Nchikota nke ihe na-egbochi ire ọkụ nke isi

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

Usoro:

• Aluminom Hypophosphite (Nkwụsi ike okpomọkụ > 300°C): Na-akwalite nhazi ike n'oge a na-akpọchi akpọchi ma na-ewepụta radicals PO· n'oge gas iji kwụsị mmeghachi omume nke usoro ọkụ.
• MCA (Okpomọkụ mmebi ~300°C): Njehie nke endothermic na-ewepụta gas ndị na-adịghị arụ ọrụ (NH₃, H₂O), na-agbaze gas ndị na-ere ọkụ ma na-egbochi mmiri na-agbaze.
• Zinc Borate (Okpomọkụ ire ere > 300°C): Na-eme ka mmepụta iko dị ka ihe na-enwu enwu, na-ebelata anwụrụ ọkụ na ìhè anyanwụ.

Oke akwadoro:
Aluminom Hypophosphite (10-15%) + MCA (5-8%) + Zinc Borate (3-5%).

2. Magnesium Hydroxide nke a gbanwere n'elu + Aluminom Hypophosphite + Organic Phosphinate (dịka ọmụmaatụ, ADP)

Usoro:

• Magnesium Hydroxide Agbanweri (Okpomọkụ nke ire ere ~ 300°C): Ọgwụgwọ elu (silane/titanate) na-eme ka mgbasa na nkwụsi ike okpomọkụ ka mma ebe ọ na-amịkọrọ okpomọkụ ruo na okpomọkụ ihe.
• Phosphinate Organic (dịka ọmụmaatụ, ADP, Nkwụsi ike okpomọkụ > 300°C): Ihe na-egbochi ọkụ gas nke ọma, na-ejikọta ya na sistemụ phosphorus-nitrogen.

Oke akwadoro:
Magnesium Hydroxide (15-20%) + Aluminom Hypophosphite (8-12%) + ADP (5-8%).

II. Ndị na-eme ihe n'otu nhọrọ

• Nano Clay/Talc (2-3%): Na-eme ka mma char na njirimara igwe dịkwuo mma ma na-ebelata dose FR.
• PTFE (Polytetrafluoroethylene, 0.2-0.5%): Ihe na-egbochi ntapụ mmiri iji gbochie ntapụ mmiri ọkụ.
• Ntụ ntụ Silicone (2-4%): Na-akwalite ọdịdị dị oke njọ, na-eme ka ire ọkụ na-adịghị mma ma na-egbuke egbuke elu.

III. Nchikota Ndị A Ga-ezere

• Aluminom Hydroxide: Na-agbaze na 180-200°C (n'okpuru okpomọkụ nhazi PBT nke 220-250°C), na-ebute mmebi tupu oge eruo.
• Magnesium Hydroxide A Na-agbanweghị: Ọ chọrọ ọgwụgwọ elu iji gbochie nchikọta na mmebi okpomọkụ n'oge nhazi.

IV. Ndụmọdụ maka Nhazi Arụmọrụ

1. Ọgwụgwọ Elu: Jiri ihe njikọta silane na magnesium hydroxide na zinc borate mee ka mgbasa na njikọ ihu dịkwuo mma.
2. Njikwa Okpomọkụ Nhazi: Hụ na okpomọkụ mmebi FR > 250°C iji zere mmebi n'oge nhazi.
3. Nhazi nke ihe onwunwe mekaniki: Tinye ihe na-ejupụta nano (dịka ọmụmaatụ, SiO₂) ma ọ bụ ihe na-eme ka ike sie ike (dịka ọmụmaatụ, POE-g-MAH) iji kwụọ ụgwọ maka mbelata ike.

V. Ihe atụ nhazi nkịtị

VI. Paramita Nnwale Isi

• Nkwụsị ire ọkụ: UL94 V-0 (1.6mm), LOI > 35%.
• Nkwụsi Ike nke Okpomọkụ: Ihe fọdụrụ TGA > 25% (600°C).
• Njirimara Mekaniki: Ike nrụgide > 45 MPa, mmetụta dị larịị > 4 kJ/m².

Site n'ịhazi oke ya, enwere ike nweta sistemụ na-egbochi ọkụ nke na-enweghị halogen ma na-eme ka arụmọrụ PBT dị mma.

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