A chọrọ ka waya ndị e ji PAN rụọ dị ka nke e ji oxidize mee, mee ka ha dị obere, ma mee ka ha dị elu ka ha wee nwee carbon ka ha wee too.eriri carbon, wee mee ka ọ bụrụ graphitized iji mepụta eriri graphite. Okpomọkụ ahụ na-eru site na 200℃ ruo 2000-3000℃, nke na-eme mmeghachi omume dị iche iche ma na-emepụta nhazi dị iche iche, nke na-enwekwa ihe onwunwe dị iche iche.
1. Ogbo Pyrolysis:Mbelata oxidation na akụkụ okpomọkụ dị ala, obere carbonization na akụkụ okpomọkụ dị elu
A na-eme arylation tupu oxidation, ogologo ya fọrọ nke nta ka ọ bụrụ nkeji 100, okpomọkụ nke 200-300 ℃, ebumnuche ya bụ iji thermoplastic PAN linear macromolecular yinye ka ọ bụrụ usoro trapezoidal na-adịghị plastic nke na-eguzogide okpomọkụ, bụ isi mmeghachi omume maka usoro macromolecular nke cyclization na intermolecular crosslinking, yana mmeghachi omume pyrolysis na ntọhapụ nke ọtụtụ obere molekul. Ndekọ arylation na-abụkarị 40-60%.
Okpomọkụ carbonization dị alaỌ na-adịkarị 300-800 ℃, ọkachasị mmeghachi omume mgbawa okpomọkụ, nke a na-ejikarị waya ọkụ eletrik dị elu eme ihe, ọkwa ahụ na-emepụta nnukwu gas na tar.
Àgwà: Agba nke eriri e tinyere na oxidation ga-aghọ ọchịchịrị, nke na-abụkarị oji, mana ọ ka na-ejigide ọdịdị nke eriri ahụ, nhazi dị n'ime ya agafeela ụfọdụ mgbanwe kemịkalụ, nhazi nke ọtụtụ otu ọrụ nwere oxygen na nhazi njikọ, na-atọ ntọala maka carbonization na-esote.
2. Ọkwa carbonization (Okpomọkụ dị elu), bụ tupu oxidation nke ihe na-ebute ụzọ n'ime ikuku na-adịghị arụ ọrụ na oke okpomọkụ, iwepụ ya na mgbakwunye na heteroatoms carbon (dịka oxygen, hydrogen, nitrogen, wdg), ka carbonization nwayọọ nwayọọ, nhazi nke amorphous carbon ma ọ bụ microcrystalline carbon structure. Usoro a bụ nzọụkwụ dị mkpa na nhazi nke ọkpụkpụ carbon. Okpomọkụ na-adịkarị n'etiti 1000-1800 ℃, ọkachasị mmeghachi omume okpomọkụ condensation, a na-eji ọtụtụ ihe na-ekpo ọkụ graphite maka ikpo ọkụ.
Àgwà: Isi ihe dị na ihe e ji carbon mee bụ carbon, ihe owuwu ya bụkarị amorphous carbon ma ọ bụ chaotic graphite nhazi, ike eletrik ya, ihe ndị e ji arụ ọrụ ma e jiri ya tụnyere ngwaahịa pre-oxidation nwere mmụba dị ukwuu.
3. Nhazi eseresebụ ọgwụgwọ okpomọkụ ọzọ nke ngwaahịa carbonization na okpomọkụ dị elu iji kwalite nhazi nke amorphous carbon ma ọ bụ microcrystalline carbon ka ọ bụrụ nhazi kristal graphite nke dị n'usoro. Site na ọrụ nke okpomọkụ dị elu, a na-ahazi atọm carbon ka ha wee mepụta nhazi oyi akwa hexagonal lattice nke nwere oke nhazi dị elu, si otú a na-eme ka ike eletriki na okpomọkụ na ike igwe nke ihe ahụ dịkwuo mma nke ukwuu.
Njirimara: Ngwaahịa a nwere eserese nwere nhazi graphite dị oke mma, nke na-enye njikwa eletriki na okpomọkụ dị mma, yana ike pụrụ iche dị elu na modulus pụrụ iche. Dịka ọmụmaatụ, modulus dị elueriri carbona na-enweta site na nnukwu ogo nke eserese.
Usoro na akụrụngwa akọwapụtara maka pre-oxidation, carbonization na graphitization:
Tupu oxidation: a na-eme ya n'ikuku na okpomọkụ a na-achịkwa nke 200-300°C. A chọrọ itinye nrụgide iji belata mkpụkọ eriri.
Kabọnization: a na-eme ya n'ime ikuku na-adịghị arụ ọrụ nke ọma, okpomọkụ ya na-arị elu nwayọ nwayọ ruo 1000-2000°C.
Nhazi eserese: a na-eme ya n'oge okpomọkụ dị elu (2000-3000°C), na-abụkarị n'ime oghere ma ọ bụ n'ime ikuku na-adịghị arụ ọrụ.
Oge ozi: Mee-22-2025
