1) Chiyambi cha graphite yowonjezera
Expandable graphite, yomwe imadziwikanso kuti flexible graphite kapena worm graphite, ndi mtundu watsopano wa zinthu za carbon. Ma graphite owonjezera ali ndi zabwino zambiri, monga malo akulu enieni a surce, zochitika zapamwamba, kukhazikika kwamankhwala abwino komanso kukana kutentha kwambiri. The wamba kukonzekera ndondomeko kukodzedwa graphite ndi kutenga zachilengedwe flake graphite monga zakuthupi, choyamba kupanga expandable graphite kudzera makutidwe ndi okosijeni ndondomeko, ndiyeno kukulitsa mu kukodzedwa graphite. Pakakhala kutentha kwakukulu, zinthu zowonjezera za graphite zimatha kuwonjezera nthawi 150 ~ 300 mu voliyumu, ndikusintha kuchokera ku flake kupita ku nyongolotsi, kotero kuti mawonekedwewo ndi otayirira, opindika komanso opindika, malowo amakulitsidwa, mphamvu yakumtunda imakulitsidwa. , mphamvu adsorption wa flake graphite kumatheka, ndi nyongolotsi ngati graphite akhoza ophatikizidwa palokha, kotero kuti nkhaniyo ali ndi ntchito ya lawi retardant, kusindikiza ndi malonda, ndipo chimagwiritsidwa ntchito m'madera a moyo, asilikali, kuteteza chilengedwe. , makampani opanga mankhwala ndi zina zotero.
2) Kukonzekera njira yowonjezera graphite
Chemical makutidwe ndi okosijeni ndi electrochemical makutidwe ndi okosijeni makamaka ntchito kukodzedwa graphite. Njira yachikhalidwe ya okosijeni yamankhwala imakhala ndi njira yosavuta komanso yokhazikika, koma pali zovuta zina monga kuwononga asidi komanso kuchuluka kwa sulfure pazinthu. Njira ya electrochemical sigwiritsa ntchito okosijeni, yankho la asidi likhoza kubwezeretsedwanso nthawi zambiri, ndi kuipitsidwa kwa chilengedwe ndi mtengo wotsika, koma zokolola ndizochepa ndipo zofunikira za electrode zipangizo ndizokwera. Pakalipano, zimangokhala kafukufuku wa labotale. Kuphatikiza pa njira zosiyanasiyana za okosijeni, njira ziwirizi zimakhala ndi chithandizo chofanana pambuyo pake monga deacidification, kutsuka madzi ndi kuyanika. Chemical oxidation njira ndiyo njira yomwe imagwiritsidwa ntchito kwambiri mpaka pano. Njirayi ndi yokhwima ndipo yadziwika kwambiri komanso imagwiritsidwa ntchito m'makampani.
3)Kusiyana pakati pa graphite yowonjezera ndi graphene
Graphene ndi graphite yokulitsidwa imakhala ndi machitidwe osiyanasiyana pamapangidwe azinthu komanso gawo logwiritsa ntchito. Kuwonjezera graphite angagwiritsidwe ntchito ngati zopangira graphene kupanga. Mwachitsanzo, njira ya Hummers ingagwiritsidwe ntchito kupeza graphene okusayidi ndi akupanga kukula kwa graphite okusayidi. Pamene kukodzedwa graphite anavula mu chidutswa chimodzi, amakhala graphene. Ngati amavula mu zigawo zingapo, ndi zigawo zingapo za graphene. Ma graphene nanosheets amatha kukonzedwa kuchokera ku magawo khumi mpaka 30.
4) Magawo ogwiritsira ntchito ma graphite owonjezera
1. Kugwiritsa ntchito zipangizo zachipatala
Zovala zamankhwala zopangidwa ndi ma graphite okulitsidwa zimatha kulowa m'malo mwa gauze ambiri achikhalidwe chifukwa cha zinthu zake zabwino kwambiri.
2. Kugwiritsa ntchito zida zankhondo
Kukulitsidwa kwa graphite kumaphwanyidwa kukhala ufa wabwino, womwe umakhala ndi kufalikira kwamphamvu komanso kuyamwa kwa mafunde a infuraredi. Kupanga ufa wake wabwino kukhala zida zotchingira bwino kwambiri za infrared kumachita gawo lofunikira pakuyesa kwazithunzi pankhondo zamakono.
3. Kugwiritsa ntchito zipangizo zotetezera chilengedwe
Ma graphite owonjezera amagwiritsidwa ntchito kwambiri pankhani yachitetezo cha chilengedwe chifukwa cha kuchepa kwake, kopanda poizoni, kopanda kuipitsidwa, chithandizo chosavuta komanso kutsatsa bwino kwambiri.
4. Zida zamankhwala
Zida za carbon zimagwirizana kwambiri ndi thupi la munthu ndipo ndizinthu zabwino zamoyo. Monga mtundu watsopano wa zinthu za kaboni, zinthu zokulitsidwa za graphite zili ndi mawonekedwe abwino kwambiri opangira ma organic ndi biological macromolecules. Ili ndi biocompatibility yabwino, yopanda poizoni, yopanda pake komanso yopanda zotsatirapo. Ili ndi chiyembekezo chogwiritsa ntchito kwambiri pazinthu zamankhwala.
Nthawi yotumiza: May-17-2022