Ngwọta Sistemụ maka Ibelata Njupụta Anwụrụ ọkụ TPU

Ngwọta Sistemụ maka Ibelata Njupụta Anwụrụ ọkụ TPU (Ugbu a: 280; Ebumnuche: <200)
(Usoro dị ugbu a: Aluminium hypophosphite 15 phr, MCA 5 phr, Zinc borate 2 phr)

I. Nyocha nke Isi Okwu

1. Mmachi nke Usoro Ugbu a:

• Aluminom hypophosphite: Na-egbochi mgbasa nke ire ọkụ mana ọ na-ebelata oke mbelata nke anwụrụ ọkụ.
• MCA: Ihe na-egbochi ọkụ gas nke na-arụ ọrụ nke ọma maka ìhè mgbe ọkụ gasịrị (na-erute ihe mgbaru ọsọ) mana ezughị oke maka mbelata anwụrụ ọkụ.
• Zinc borate: Ọ na-akwalite mmepụta char mana a naghị etinye ya obere ọgwụ (naanị 2 phr), ọ naghị emepụta oke char nke zuru oke iji gbochie anwụrụ ọkụ.

1. Isi ihe achọrọ:

• Belata njupụta anwụrụ ọkụ ọkụ site nammechi anwụrụ ọkụ emeliterema ọ bụusoro mgbaze nke usoro gas.

II. Atụmatụ Nhazi

1. Hazie Oke Nhazi Ndị Dị Ugbu A

• Aluminom hypophosphite: Mmụba ruo18–20 ph(na-eme ka ire ọkụ ghara ịdị n'otu; na-enyocha mgbanwe).
• MCA: Mmụba ruo6–8 phr(na-eme ka ihe na-eme n'oge gas dịkwuo mma; oke ego nwere ike imebi nhazi).
• Zinc borate: Mmụba ruo3–4 phr(na-eme ka nhazi nke chara acha sikwuo ike).

Ihe atụ Nhazi Emeziri:

• Aluminom hypophosphite: 18 hr
• MCA: 7 phr
• Zinc borate: 4 kwa ụbọchị

2. Webata ihe ndị na-ebelata anwụrụ ọkụ nke ọma

• Ihe mejupụtara Molybdenum(dịka ọmụmaatụ, zinc molybdate ma ọ bụ ammonium molybdate):
• Ọrụ: Na-akpali mmepụta ike, na-emepụta ihe mgbochi siri ike iji gbochie anwụrụ ọkụ.
• Ọnụọgụ ọgwụ: 2–3 phr (na-ejikọta ya na zinc borate).
• Nanoclay (montmorillonite):
• Ọrụ: Ihe mgbochi anụ ahụ iji belata mwepụta gas na-ere ọkụ.
• Ọnụọgụ ọgwụ: 3–5 phr (agbanwere elu maka mgbasa).
• Ihe ndị na-egbochi ire ọkụ dabere na silicone:
• Ọrụ: Na-eme ka mma ọkụ na mgbochi anwụrụ ọkụ ka mma.
• Ọnụọgụ ọgwụ: 1–2 phr (na-ezere mfu nghọta).

3. Nhazi Sistemụ Mmekọrịta

• Zinc borate: Tinye 1–2 phr iji mee ka ọ dị mma na aluminom hypophosphite na zinc borate.
• Ammonium polyphosphate (APP): Tinye 1–2 phr iji mee ka ọrụ gas-phase dịkwuo mma site na iji MCA.

III. Usoro zuru oke akwadoro

Nsonaazụ A Na-atụ Anya Ya:

• Njupụta anwụrụ ọkụ: ≤200 (site na njikọta char + gas-phase).
• Njupụta anwụrụ ọkụ mgbe ìhè gasịrị: Debe ≤200 (MCA + zinc borate).

IV. Ihe Ndị Dị Mkpa Banyere Nhazi Usoro

1. Okpomọkụ nhazi: Debe ya na 180–200°C iji gbochie ire ere tupu oge eruo.
2. Mgbasa:

• Jiri ngwakọta ngwa ngwa (≥2000 rpm) maka nkesa nanoclay/molybdate otu.
• Tinye ihe njikọ silane 0.5–1 phr (dịka ọmụmaatụ, KH550) iji melite ndakọrịta ihe njupụta.

1. Nhazi ihe nkiri: Maka ịkpụ ihe, belata ọsọ oyi iji mee ka nhazi oyi dị mfe.

V. Nzọụkwụ Nkwenye

1. Nnwale Ụlọ NyochaKwadebe ihe nlele dịka usoro akwadoro si dị; mee ule ọkụ kwụ ọtọ na njupụta anwụrụ ọkụ UL94 (ASTM E662).
2. Nhazi Arụmọrụ: Nwalee ike nrụgide, ogologo oge, na nghọta.
3. Nhazigharị OgeỌ bụrụ na njupụta anwụrụ ọkụ ka dị elu, jiri nwayọ gbanwee molybdate ma ọ bụ nanoclay (±1 phr).

VI. Ọnụ ego na ohere

• Mmetụta Ọnụego: Zinc molybdate (~¥50/kg) + nanoclay (~¥30/kg) na-eme ka ọnụ ahịa ya dịkwuo elu site na <15% na ≤10% ibu.
• Nhazi ụlọ ọrụ mmepụta ihe: Dakọtara na nhazi TPU ọkọlọtọ; ọ dịghị mkpa akụrụngwa pụrụ iche.

VII. Mmechi

Site nammụba nke zinc borate + ịgbakwunye molybdate + nanoclay, usoro ihe omume atọ (nhazi ike + mgbaze gas + ihe mgbochi anụ ahụ) nwere ike iru njupụta anwụrụ ọkụ nke ebumnuche ya (≤200). Mee ka nnwale ahụ bụrụ ihe kacha mkpamolybdate + nanoclaynjikọta, wee mezie oke maka nguzozi ọnụ ahịa na arụmọrụ.