graphite yowonjezera imapangidwa ndi njira ziwiri

Expandable graphite amapangidwa ndi njira ziwiri: mankhwala ndi electrochemical. Njira ziwirizi ndi zosiyana kuwonjezera pa ndondomeko ya okosijeni, deacidification, kutsuka madzi, kutaya madzi m'thupi, kuyanika ndi njira zina zofanana. Ubwino wazinthu za opanga ambiri omwe amagwiritsa ntchito njira zama mankhwala amatha kufikira index yomwe yatchulidwa mu GB10688-89 "expandable graphite" muyezo, ndikukwaniritsa zofunikira pakupanga mapepala osinthika a graphite ndi miyezo yotumizira kunja.

Koma kupanga zofunikira zapadera zotsika kwambiri (≤10%), sulfure yochepa (≤2%) yazinthu zimakhala zovuta, kupanga sikudutsa. Kulimbikitsa kasamalidwe luso, kuphunzira ndondomeko intercalation mosamala, bwino ubale pakati pa magawo ndondomeko ndi ntchito mankhwala, ndi kubala khola khalidwe expandable graphite ndi makiyi kusintha khalidwe la mankhwala wotsatira. Qingdao Furuite Graphite mwachidule: electrochemical njira popanda okosijeni ena, zachilengedwe flake graphite ndi wothandiza anode pamodzi kupanga anode chipinda ankawaviika anaikira sulfuric asidi electrolyte, kudzera mwachindunji panopa kapena zimachitika panopa, makutidwe ndi okosijeni patapita nthawi kuti atenge, pambuyo kutsuka ndi kuyanika. ndi graphite yowonjezera. The lalikulu khalidwe la njira imeneyi ndi kuti anachita digiri ya graphite ndi ntchito index wa mankhwala akhoza lizilamuliridwa ndi kusintha magawo magetsi ndi nthawi anachita, ndi kuipitsidwa yaing'ono, mtengo wotsika, khalidwe khola ndi ntchito kwambiri. Ndikofunikira kuthetsa vuto losakanikirana, kuwongolera bwino komanso kuchepetsa kugwiritsa ntchito mphamvu pakulumikizana.

Pambuyo deacidification ndi pamwamba njira ziwiri, misa chiŵerengero cha sulfuric asidi wetting ndi adsorption wa graphite interlamellar mankhwala akadali za 1: 1, kumwa intercalating wothandizila ndi lalikulu, ndi kuchapa madzi kumwa ndi zimbudzi kumaliseche ndi mkulu. Ndipo opanga ambiri sanathetse vuto la chithandizo cha madzi otayira, muzochitika zachilengedwe, kuwonongeka kwa chilengedwe kuli kwakukulu, kudzalepheretsa chitukuko cha mafakitale.