Yintoni igraphene?
IGraphene yinto entsha enehexagonal yeleleti yobusi eyenziwe kukupakishwa okusondeleyo kweeathom zekhabhoni ezinomgangatho omnye.Ngamanye amazwi, yimathiriyeli yekhabhoni ene-dimensional-dimensional kwaye iyinxalenye ye-heteromorphic body of carbon element.Ibhondi yemolekyuli yegraphene yi-0.142 nm kuphela, kwaye isithuba seplanethi yekristale yi-0.335 nm kuphela.
Abantu abaninzi abanalo ingcamango yeyunithi ye-nano.I-Nano yiyunithi yobude.I nano enye imalunga ne 10 ukuya kuthabatha 9 square metres.Imfutshane kakhulu kunentsholongwane kwaye inkulu kangangeeathom ezine.Kwimeko nayiphi na into, asinakuze sibone into ye-1 nm ngamehlo ethu.Kufuneka sisebenzise imakroskopu.Ukufunyaniswa kwe-nanotechnology kuzise imimandla emitsha yophuhliso eluntwini, kwaye igraphene ikwayitekhnoloji emele ibaluleke kakhulu.
Ukuza kuthi ga ngoku, igraphene yeyona khompawundi ibhityileyo ethe yafunyanwa kwihlabathi lomntu.Ubukhulu bayo bulingana neathom enye kuphela.Kwangaxeshanye, ikwayeyona mathiriyeli ikhaphukhaphu kunye neyona conductor yombane ibalaseleyo emhlabeni.
Umntu kunye negraphene
Nangona kunjalo, imbali yomntu kunye negraphene iye yahlala ngaphezu kwesiqingatha senkulungwane.Kwangowe-1948, izazinzulu ziye zafumanisa ukuba kukho igraphene kwindalo.Nangona kunjalo, ngelo xesha, kwakunzima kwinqanaba lezenzululwazi kunye nezobuchwepheshe ukuxobula igraphene kwisakhiwo somgangatho omnye, ngoko ke ezi graphene zazipakishwe kunye, zibonisa imeko yegraphite.Yonke i-1 mm yegraphite iqulethe malunga nezigidi ezi-3 zeeleya zegraphene.
Kodwa ixesha elide, igraphene yayithathwa njengento engekho.Abanye abantu bacinga ukuba yinto nje ecingelwa zizazinzulu, kuba ukuba igraphene ikho ngokwenene, kutheni izazinzulu zingenako ukuyikhupha yodwa?
Kuze kube yi-2004, izazinzulu u-Andre Geim kunye noKonstantin Volov baseYunivesithi yaseManchester e-UK bafumana indlela yokuhlukanisa igraphene.Bafumanisa ukuba ukuba iiflake zegraphite zahluthwa kwi-graphite ye-pyrolytic ejoliswe kakhulu, ngoko ke amacala amabini e-graphite flakes anamathele kwi-tape ekhethekileyo, kwaye emva koko i-tape yachithwa, le ndlela inokwahlula ngempumelelo i-graphite flakes.
Emva koko, kufuneka uphinde uphinde usebenze ngokuqhubekayo ukwenza iphepha legraphite esandleni sakho libe lincinci kwaye lincinci.Ekugqibeleni, unokufumana iphepha elikhethekileyo elenziwe ngeeathom zekhabhoni kuphela.Izinto ezikweli phepha yigraphene.U-Andre Geim kunye noKonstantin Novoselov nabo baphumelele ibhaso leNobel ngokufunyanwa kwegraphene, kwaye abo bathi igraphene ayikho babethwa ebusweni.Ngoko kutheni igraphene inokubonisa iimpawu ezinjalo?
I-Graphene, ukumkani wezinto eziphathekayo
Nje ukuba kufunyaniswe igraphene, yatshintsha ngokupheleleyo uyilo lophando lwezenzululwazi kwihlabathi liphela.Ekubeni igraphene iye yabonakala iyeyona nto incinane ehlabathini, igram enye yegraphene yanele ukugubungela ibala lebhola eliqhelekileyo.Ukongeza, igraphene ikwanayo ne-thermal kunye ne-conductivity yombane.
Isiphene esisulungekileyo segraphene esine-single-layer sine-thermal conductivity eyomeleleyo kakhulu, kwaye ukuhanjiswa kwayo kwe-thermal kuphezulu ukuya kuthi ga kwi-5300w / MK (w / m · degree: kucingelwa ukuba ubukhulu be-single-layer ye-material yi-1m kunye nokwahlukana kobushushu phakathi Amacala amabini yi-1C, esi sixhobo sinokuqhuba obona bushushu buninzi ngaphaya kommandla we-1m2 ngeyure), Yimpahla yekhabhoni ene-conductivity ephezulu ye-thermal eyaziwayo ebantwini.
Iiparamitha zemveliso SUNGRAF BRAND
Umbala wembonakalo Umgubo omnyama
Umxholo weCarbon% > amashumi alithoba anesithoba
Chip ubukhulu (D50, um) 6~12
Umxholo wokufuma% < ezimbini
Uxinaniso g / cm3 0.02~0.08
Ixesha lokuposa: May-17-2022