Fiilooyinka cayriin ee PAN ku salaysan waxay u baahan yihiin in hore loo sii oksaydhsaydhsiyo, kaarboonays heerkulka hooseeya, iyo heerkul sare oo kaarbonized si loo sameeyofiilooyinka kaarboonka, ka dibna graphitized si ay u sameeyaan fiilooyinka graphite. Heerkulku waxa uu gaaraa 200℃ ilaa 2000-3000℃, kaas oo fuliya falcelino kala duwan oo sameeya qaab dhismeedyo kala duwan, kuwaas oo iyaguna leh sifooyin kala duwan.
1. Marxaladda pyrolysis:Pre-oxidation ee qaybta heerkulka hoose, carbonization heerkulka hoose ee qaybta heerkulka sare
arylation Pre-oxidation dhacdaa, dhererka ku dhawaad 100 daqiiqo, heerkulka 200-300 ℃, ujeedadu waa in thermoplastic PAN linear silsilad macromolecular galay qaab-dhismeedka trapezoidal non-caag kulaylka u adkaysta, falcelinta ugu weyn ee silsilad macromolecular ee wareegga iyo intermolecular crosslinking, oo ay la socdaan falcelinta pyrolysis yar yar. Tilmaanta arylation-ka guud ahaan waa 40-60%.
Heerkulka kaarboonization-ku-hooseeyaguud ahaan waa 300-800 ℃, inta badan falcelinta kuleylka kulaylka, inta badan iyadoo la isticmaalayo kulaylka sare ee foornada korontada silig silig, marxaladda soo saartaa xaddi badan oo gaaska qiiqa iyo daamur,.
Astaamaha: Midabka fiber-ka hore ee oksaydhisku wuxuu noqonayaa mid madow, sida caadiga ah madow, laakiin wali wuxuu hayaa qaab-dhismeedka fiber-ka, qaab-dhismeedka gudaha ayaa soo maray heerar gaar ah oo isbeddelka kiimikaad ah, samaynta tiro ka mid ah oksijiinta-kooxaha shaqada ee ka kooban iyo qaab-dhismeedka isku-dhafan, oo dhigaya aasaaska kaarboonization-ka xiga.
2. (heerkulka sare) heerka kaarboonaynta, waa pre-oxidation ee horudhaca ah ee jawiga aan firfircoonayn ee heerkulka sare ee burburka, ka saarista kaas oo lagu daro heteroatoms kaarboon (sida oxygen, hydrogen, nitrogen, iwm.), si tartiib tartiib ah carbonization, samaynta kaarboon amorphous ama qaabdhismeedka kaarboon microcrystalline. Habkani waa tallaabo fure u ah samaynta lafaha kaarboonka. Heerkulka guud ahaan waa inta u dhaxaysa 1000-1800 ℃, inta badan falcelinta uumiga kulaylka, inta badan kuleyliyaha garaafyada waxaa loo isticmaalaa kululaynta.
Astaamaha: Qaybta ugu muhiimsan ee walxaha carbonized waa kaarboon, qaabdhismeedku waa inta badan kaarboon amorphous ama qaab dhismeedka garaafyada fowdada ah, korantada korantada, sifooyinka farsamada marka la barbar dhigo sheyga hore-oxidation ayaa si weyn u kordhay.
3. Garaafayntawaa daawaynta kulaylka dheeraadka ah ee alaabta carbonization ee heerkulka sare si kor loogu qaado qaab-dhismeedka kaarboon amorphous ama kaarboon microcrystalline si habaysan graphite crystal qaab-dhismeedka. Iyadoo loo marayo ficilka heerkulka sare, atomiyada kaarboonka ayaa dib loo habeynayaa si ay u sameeyaan qaab dhismeedka lakabka laba geesoodka ah oo leh heer sare oo jihada, sidaas darteed si weyn u wanaajinaya korantada iyo kulaylka iyo xoogga farsamada ee alaabta.
Astaamaha: Alaabta garaafaysan waxay leedahay qaab-dhismeedka garaafyada crystalline aad u sarreeya, kaas oo bixiya koronto iyo kulayl aad u fiican, iyo sidoo kale xoog gaar ah oo sarreeya iyo modules gaar ah. Tusaale ahaan, modul-sarefiilooyinka kaarboonkawaxaa lagu helaa iyada oo loo marayo heer sare oo garaafka.
Tallaabooyinka gaarka ah iyo shuruudaha qalabka ee pre-oxidation, carbonization and graphitization:
Pre-oxidation: waxaa lagu sameeyaa hawo heerkul ah 200-300°C. Xiisad ayaa loo baahan yahay in la mariyo si loo yareeyo yaraanta fiber-ka.
Carbonization: waxaa lagu sameeyaa jawi aan firfircoonayn oo si tartiib tartiib ah u kordho heerkulka ilaa 1000-2000 ° C.
Garaafaynta: waxaa lagu sameeyaa heerkul sare (2000-3000°C), badiyaa meel faaruq ah ama jawi aan firfircoonayn.
Waqtiga boostada: May-22-2025
