Otu esi amata ọdịiche dị n'etiti pre-oxidation/carbonization/graphitization

A ga-ebu ụzọ oxidized wires ndị sitere na PAN, carbonized dị ala, yana carbonized dị elu iji mepụta.eriri carbon, na mgbe ahụ graphitized na-eme ka graphite eriri. Okpomọkụ na-erute site na 200 ℃ ruo 2000-3000 ℃, nke na-eme mmeghachi omume dị iche iche na ụdị dị iche iche, nke n'aka nke ya nwere ihe dị iche iche.
1. Ogbo pyrolysis:Pre-oxidation na akụkụ okpomọkụ dị ala, carbonization dị ala na akụkụ okpomọkụ dị elu.
Pre-oxidation arylation emee, ogologo nke fọrọ nke nta 100 nkeji, okpomọkụ nke 200-300 ℃, nzube bụ thermoplastic PAN linear macromolecular yinye n'ime na-abụghị plastic okpomọkụ na-eguzogide trapezoidal Ọdịdị, isi mmeghachi omume maka macromolecular yinye nke cyclization na intermolecular crosslinking, esonyere na ntọhapụ nke esrolysis ọtụtụ mmeghachi omume. Ndekọ arylation n'ozuzu bụ 40-60%.
Okpomọkụ carbonization dị alabụ n'ozuzu 300-800 ℃, tumadi thermal cracking mmeghachi omume, ukwuu n'ime na-eji elu okpomọkụ eletriki ọkụ waya kpo oku, ogbo na-arụpụta a nnukwu ego nke iyuzucha gas na tar,.
Njirimara: Agba nke eriri oxidized nke mbụ ga-agba ọchịchịrị, na-abụkarị oji, ma ka na-ejigide morphology nke eriri ahụ, usoro dị n'ime ahụ emeela mgbanwe ụfọdụ nke kemịkalụ, nhazi nke ọnụ ọgụgụ nke ikuku oxygen nwere ọrụ dị iche iche na njikọ njikọ, na-etinye ntọala maka carbonization na-esote.
2. (Elu-okpomọkụ) carbonization ogbo, bụ pre-oxidation nke precursor na inert ikuku na elu okpomọkụ decomposition, mwepụ nke na mgbakwunye na carbon heteroatoms (dị ka oxygen, hydrogen, nitrogen, wdg), nke mere na carbonization nwayọọ nwayọọ, e guzobere amorphous carbon ma ọ bụ microcrystalline carbon Ọdịdị. Usoro a bụ nzọụkwụ dị mkpa na nhazi nke ọkpụkpụ carbon. The okpomọkụ bụ n'ozuzu n'etiti 1000-1800 ℃, tumadi thermal condensation mmeghachi omume, ọtụtụ nke graphite heaters na-eji maka kpo oku.
Njirimara: Akụkụ bụ isi nke ihe carbonized bụ carbon, ihe owuwu ahụ na-abụkarị amorphous carbon ma ọ bụ chaotic graphite Ọdịdị, eletriki eletrik ya, akụrụngwa akụrụngwa tụnyere ngwaahịa tupu oxidation nwere mmụba dị ukwuu.
3. Eserese eseresebụ ọgwụgwọ okpomọkụ ọzọ nke ngwaahịa carbonization na okpomọkụ dị elu iji kwalite nhazi nke carbon amorphous ma ọ bụ microcrystalline carbon ka ọ bụrụ usoro kristal graphite n'usoro. Site na omume nke okpomọkụ dị elu, a na-ahazigharị carbon carbon ka ọ bụrụ ihe nhazi akwa hexagonal lattice nwere oke nghazi, si otú a na-eme ka ọkụ eletrik na ọkụ ọkụ na ike nke ihe ahụ dịkwuo elu.
Àgwà: Ngwaahịa a graphitized nwere usoro graphite kristal nke ukwuu, nke na-enye ezigbo ọkụ eletrik na ọkụ ọkụ, yana ike dị elu na modul pụrụ iche. Dị ka ihe atụ, elu-moduleriri carbonA na-enweta ya site na ọkwa dị elu nke graphitization.
Usoro akọwapụtara na akụrụngwa chọrọ maka tupu oxidation, carbonization na graphitization:
Pre-oxidation: a na-eme ya na ikuku na okpomọkụ a na-achịkwa nke 200-300 ° C. Ekwesịrị itinye mgbakasị ahụ iji belata mbelata fiber.
Carbonization: A na-eme ya na ikuku ikuku na-eji nwayọọ nwayọọ na-abawanye okpomọkụ ruo 1000-2000 ° C.
Eserese: A na-eme ya na okpomọkụ dị elu (2000-3000 Celsius C), na-emekarị na oghere ma ọ bụ na ikuku ikuku.