Kedu ihe kpatara PTFE Igwe ọkụ ọkụ dị elu na-eguzogide na ọkụ mepere emepe? Kedu ihe bụ Microscopic Flame-Retardant Mechanism?

Jiangsu Aokai New Materials, onye na-emepụta ihe na-emepụta akwa dị elu nke PTFE, na-akọwa:

PTFE elu-okpomọkụ ákwà bụ ukwuu ire ọkụ na-eguzogide na-emeghe ọkụ, tumadi ruru ka molekụla Ọdịdị na thermal decomposition usoro nke isi ihe - polytetrafluoroethylene (PTFE). Nkwụghachi ọkụ ya anaghị adabere n'ọkụ ọkụ agbakwunyere dị ka ihe nkịtị, kama ọ na-esite na kemịkalụ kemịkalụ dị n'ime ya na omume ire ere pụrụ iche.

Enwere ike ịghọta nke a site na ọkwa atọ:

1. Molecular siri ike 'Amor': Elu Bond Energy and Protective Layer

·  Ike carbon-fluorine (C–F) agbụ : PTFE ụmụ irighiri mejupụtara a carbon yinye azụ ọkpụkpụ nke ọma gbara ya gburugburu site fluorine atọm. Njikọ CF-F bụ otu n'ime njikọ kemịkalụ kacha sie ike, yana ike njikọ nke ihe dịka 485 kJ/mol. A na-achọ ike dị oke elu (okpomọkụ) iji mebie ya, na-eme usoro nchebe mbụ.

Mmetụta  nchebe nke atom fluorine : Atọm fluorine buru ibu, nke na-adịghị mma na-ejuju nke ukwuu, na-eme dị ka ngwa agha siri ike nke na-emechi agbụ carbon dị n'ime nke ọma. Ihe mgbochi a na-egbochi ọtụtụ kemịkalụ (gụnyere oxygen) ịnweta yinye carbon ma na-egbochi mmeghachi omume oxidation dị mkpa maka combustion.

2. Nbibi na-adịghị ere ọkụ: Depolymerization kama ọkụ

Chain  scission tupu ọxịdashọn : N'okpuru elu okpomọkụ, ndị dịtụ ike carbon-carbon (C–C) agbụ n'ime PTFE agbaji tupu C-F agbụ. Agbụ anụ ahụ na-amalite ire ere tupu ikuku oxygen esonye na mmeghachi omume.

Isi  ngwaahịa bụ monomer : Mgbe agbajisịrị, PTFE na-ebutekarị depolymerization , na-ahapụ tetrafluoroethylene (C₂F₄) monomers site na njedebe agbụ. Ihe ahụ na-eku ọkụ kama ịbụ ọkụ ọkụ na-eme ihe ike nke na-ahapụ nnukwu okpomọkụ na gas na-ere ọkụ.

Gas  -phase mgbochi mmetụta : C₂ F₄ gas si depolymerization bụ denser karịa ikuku na-edozi nso n'elu, na-akpụ a gaseous oyi akwa na-adịru nwa oge na-dilutes oxygen mkpokọta na n'ihu na-egbochi combustion.

3. Na-akwado Ọrụ nke Glass Fiber Substrate

PTFE elu-okpomọkụ ákwà bụ a mejupụtara mere site mkpuchi PTFE jidesie iko eriri ákwà. Nri iko n'onwe ya bụ ihe inorganic anaghị ere ọkụ. Dị ka ọkpụkpụ ọkpụkpụ, ọ na-eme ka ọ bụrụ na ọ bụrụgodị na oyi akwa PTFE na-ekpochapụ kpamkpam n'okpuru oke okpomọkụ, ihe ahụ adịghị agbaze ma ọ bụ na-agbaze dị ka plastik dị ọcha, na-ejigide iguzosi ike n'ezi ihe na igbochi mgbasa ọkụ.

Ekwesịrị imesi ya ike na PTFE bụ ire ọkụ na-ere ọkụ , ọ bụghị kpamkpam enweghị ọkụ. Mgbe ọ na-ekpo ọkụ n'elu ebe agbaze ya (327 ° C) ma na-aga n'ihu, ọ na-emebi ma na-ahapụ uzuzu na-egbu egbu. Ọ na-anagide okpomọkụ ogologo oge ruo 260 Celsius ma na-anọgide na-adịgide adịgide na 300-360 Celsius.

Nbibi n'ime ọkụ mepere emepe : Mgbe ekpughere ya ozugbo na ọkụ mepere emepe (dị elu karịa ogo ire ere ya), oyi akwa PTFE na-emebi emebi, mana usoro ahụ anaghị ewepụta ọkụ zuru oke ma ọ bụ combustible iji kwado combustion. Ejikọtara ya na nkwado eriri iko, ọkụ enweghị ike ịgbasa mgbe niile.

Na nchịkọta, PTFE elu-okpomọkụ ákwà bụ ire ọkụ na-eguzogide n'ihi na ya isi ihe PTFE bụ molecularly iji guzogide combustion .High-ike chemical agbụ, pụrụ iche decomposition ụzọ, na ndị na-abụghị flammable iko eriri skeleton ọnụ na-etolite a ike fireproof mgbochi.

Ozi dị n'elu bụ Jiangsu Aokai New Materials Technology Co., Ltd.

Maka nkọwa zuru ezu, ọnọdụ ngwa na ngwọta ahaziri nke ngwaahịa anyị zuru oke - gụnyere akwa akwa PTFE dị elu, teepu PTFE dị elu, eriri akwa PTFE dị elu, eriri na-enweghị ihe ọ bụla maka igwe na-ejikọta, akwa PTFE nwere otu akụkụ, akwa mkpuchi na-ekpo ọkụ na-ekpo ọkụ, akwa akwa na-eguzogide ọgwụ, biko kpọtụrụ anyị na ngwaahịa ndị ọzọ na-eguzogide ọgwụ.

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