Nkibikoresho bishya bikora bya karubone, Expanded Graphite (EG) nigikoresho cyoroshye kandi cyoroshye kimeze nkinyo yabonetse muri flake ya grafite karemano hagati, gukaraba, gukama no kwaguka kwinshi.EG Usibye ibintu byiza bya grafite karemano ubwayo, nk'ubukonje n'ubushyuhe, kurwanya ruswa no kwisiga, ifite kandi ibiranga ubworoherane, kwihanganira kwikuramo, adsorption, guhuza ibidukikije, guhuza ibinyabuzima no kurwanya imirasire iyo grafite karemano idafite.Nko mu ntangiriro ya 1860, Brodie yavumbuye grafite yagutse ashyushya grafite karemano hamwe na reagent ya chimique nka acide sulfurike na aside nitric, ariko kuyikoresha ntibyatangiye nyuma yimyaka ijana.Kuva icyo gihe, ibihugu byinshi byatangije ubushakashatsi niterambere rya grafite yagutse, kandi bitera intambwe nini mubumenyi.
Kwagura grafite hejuru yubushyuhe bwo hejuru irashobora guhita yagura inshuro 150 kugeza 300, kuva kumpapuro kugeza kumera nkinyo, kuburyo imiterere irekuye, yuzuye kandi igoramye, ubuso bwagutse, ingufu zubuso ziratera imbere, adsorption ya flake grafite ni byongerewe imbaraga, kandi grafite isa ninzoka irashobora kwikorera-mozayike, byongera ubworoherane, kwihangana hamwe na plastike.
Ikigereranyo cyagutse (EG) nigishushanyo mbonera cya grafite kiboneka muri naturel ya flake naturel ya okiside ya chimique cyangwa okiside ya electrochemic.Kubijyanye nimiterere, EG nibikoresho bya nanoscale.Iyo EG yabonywe na okiside ya H2SO4 isanzwe ikorerwa ubushyuhe buri hejuru ya 200 ℃, reaction ya REDOX ibaho hagati ya acide sulfurike na atome ya karubone, itanga umusaruro mwinshi wa SO2, CO2 hamwe numwuka wamazi, kuburyo EG itangira kwaguka , kandi igera ku bunini ntarengwa kuri 1 100 ℃, kandi ingano yayo ya nyuma irashobora kugera ku nshuro 280 z'intangiriro.Uyu mutungo wemerera EG kuzimya umuriro nukwiyongera kumwanya muto mugihe habaye umuriro.
Uburyo bwa flame retardant ya EG ni uburyo bwa flame retardant ya fonctionnement yicyiciro, ikaba ari flame retardant mugutinda cyangwa guhagarika kubyara ibintu bishobora gutwikwa biva mubintu bikomeye.EG Iyo ishyutswe kurwego runaka, izatangira kwaguka, kandi igishushanyo cyagutse kizahinduka imiterere ya vermicular hamwe nubucucike buke cyane uhereye ku gipimo cyambere, bityo bigakora urwego rwiza.Urupapuro rwagutse rwa grafite ntabwo ari karubone gusa muri sisitemu yagutse, ahubwo ni urwego rwimikorere, rushobora gushyushya ubushyuhe, gutinda no guhagarika kwangirika kwa polymer;Muri icyo gihe, ubushyuhe bwinshi bwinjizwa mugihe cyo kwaguka, bigabanya ubushyuhe bwa sisitemu.Byongeye kandi, mugihe cyo kwaguka, ion ion muri interlayer zirekurwa kugirango ziteze umwuma na karubone.
EG nka halogen idafite ibidukikije irinda ibidukikije, ibyiza byayo ni: idafite uburozi, ntabwo itanga imyuka yangiza kandi yangirika iyo ishyushye, kandi ikabyara gaze nkeya;Amafaranga yiyongereye ni make;Nta gutonyanga;Kurwanya ibidukikije bikomeye, nta kintu cyo kwimuka;Uv ituze hamwe numucyo uhagaze nibyiza;Inkomoko irahagije kandi inzira yo gukora iroroshye.Kubwibyo, EG yakoreshejwe cyane mubikoresho bitandukanye byo kwirinda umuriro ndetse n’ibikoresho bitarinda umuriro, nk'ikidodo cy’umuriro, ikibaho cy’umuriro, icyuma kizimya umuriro hamwe n’imyenda irwanya static, imifuka y’umuriro, ibikoresho byo kuzimya umuriro wa pulasitike, impeta yo kuzimya umuriro na plastiki zidakira.
Igihe cyo kohereza: Ugushyingo-09-2023