Iyini i-graphene?
I-Graphene iwuju olusha lwe-honeycomb material olubunjwe ukupakishwa okuseduze kwama-athomu ekhabhoni esendlalelo esisodwa.Ngamanye amazwi, iyi-carbon material enezinhlangothi ezimbili futhi ingeyesici esifanayo se-heteromorphic body of carbon element.Isibopho semolekyuli segraphene singu-0.142 nm kuphela, futhi isikhala sendiza yekristalu singu-0.335 nm kuphela.
Abantu abaningi abanawo umqondo weyunithi ye-nano.I-Nano iyiyunithi yobude.I-nano eyodwa icishe ibe yi-10 kuya ku-minus 9 square metres.Limfushane kakhulu kune-bacterium futhi likhulu njengama-athomu amane.Kunoma yikuphi, asikwazi neze ukubona into engu-1 nm ngamehlo ethu enqunu.Kufanele sisebenzise isibonakhulu.Ukutholakala kwe-nanotechnology kulethe imikhakha emisha yokuthuthukiswa esintwini, futhi i-graphene nayo iwubuchwepheshe obumele obubaluleke kakhulu.
Kuze kube manje, i-graphene iyinhlanganisela ye-thinnest eye yatholakala emhlabeni womuntu.Ugqinsi lwaso lulugqinsi njenge-athomu eyodwa.Ngasikhathi sinye, iphinde ibe yimpahla elula futhi iyikhondatha kagesi ehamba phambili emhlabeni.
Umuntu kanye ne-graphene
Nokho, umlando womuntu kanye ne-graphene empeleni usuthathe isikhathi esingaphezu kwengxenye yekhulu leminyaka.Kusukela ngo-1948, ososayensi bathola ukuba khona kwe-graphene emvelweni.Kodwa-ke, ngaleso sikhathi, kwakunzima ngezinga lesayensi nezobuchwepheshe ukukhipha i-graphene esakhiweni esinongqimba olulodwa, ngakho-ke lawa ma-graphene ayembondelene, abonisa isimo se-graphite.Njalo nge-1 mm ye-graphite iqukethe izendlalelo ezingaba izigidi ezi-3 ze-graphene.
Kodwa isikhathi eside, i-graphene yayibhekwa njengento engekho.Abanye abantu bacabanga ukuthi iyinto nje ecatshangwa ososayensi, ngoba uma i-graphene ikhona ngempela, kungani ososayensi bengakwazi ukuyikhipha yodwa?
Kuze kube ngu-2004, ososayensi u-Andre Geim noKonstantin Volov baseYunivesithi yaseManchester e-UK bathola indlela yokuhlukanisa i-graphene.Bathola ukuthi uma ama-graphite flakes ekhishwa ku-graphite ye-pyrolytic egxile kakhulu, khona-ke izinhlangothi ezimbili zama-graphite flakes zazinamathele ku-tape ekhethekile, bese i-tape inqanyuliwe, le ndlela ingahlukanisa ngempumelelo ama-graphite flakes.
Ngemva kwalokho, udinga kuphela ukuphinda imisebenzi engenhla ngokuqhubekayo ukuze wenze ishidi legraphite esandleni sakho libe lincane futhi libe lincane.Ekugcineni, ungathola ishidi elikhethekile elakhiwe ama-athomu ekhabhoni kuphela.Izinto ezikuleli shidi empeleni ziyi-graphene.U-Andre Geim noKonstantin Novoselov baphinde bawina uMklomelo KaNobel ngokutholakala kwe-graphene, futhi labo ababethi i-graphene ayikho bashaywa ebusweni.Ngakho kungani i-graphene ingabonisa izici ezinjalo?
I-Graphene, inkosi yezinto zokwakha
Lapho i-graphene isitholakele, yashintsha ngokuphelele ukwakheka kocwaningo lwesayensi emhlabeni wonke.Ngenxa yokuthi i-graphene iye yabonakala iyinto encane kunazo zonke emhlabeni, igremu elilodwa le-graphene lanele ukuhlanganisa inkundla yebhola evamile.Ngaphezu kwalokho, i-graphene nayo ine-conductivity enhle kakhulu yokushisa nogesi.
I-graphene engenasici yamahhala ye-single-layer ine-conductivity eshisayo eqinile, futhi ukuqhutshwa kwayo okushisayo kuphezulu njenge-5300w / MK (w / m · degree: kucatshangwa ukuthi ugqinsi olulodwa lwento engu-1m kanye nomehluko wokushisa phakathi izinhlangothi ezimbili zingu-1C, le nto ingakwazi ukuhambisa ukushisa okukhulu endaweni engu-1m2 ngehora), Ikhabhoni ene-thermal conductivity ephakeme kakhulu eyaziwa isintu.
Imingcele yomkhiqizo SUNGRAF BRAND
Umbala wokubukeka Impushana emnyama
Okuqukethwe kwekhabhoni% > amashumi ayisishiyagalolunye nesishiyagalolunye
Ububanzi be-chip (D50, um) 6~12
Okuqukethwe umswakama% < ezimbili
Ukuminyana g / cm3 0.02~0.08
Isikhathi sokuthumela: May-17-2022