Xa i-graphite iphathwa ngamakhemikhali, i-chemical reaction yenziwa ngaxeshanye kumphetho we-graphite eyandisiweyo naphakathi komaleko. Ukuba i-graphite ayicocekanga kwaye iqulethe ukungcola, kuya kuvela iziphene ze-lattice kunye nokudilika, okubangela ukwanda kommandla womphetho kunye nokwanda kweendawo ezisebenzayo, okuya kukhawulezisa i-edge reaction. Nangona oku kuluncedo ekwakhiweni kwee-edge compounds, kuya kuchaphazela ukwakheka kwee-expanded graphite intercalation compounds. Kwaye i-lattice ene-layered layers iyatshatyalaliswa, nto leyo eyenza i-lattice iphazamiseke kwaye ingahambelani, ukuze isantya kunye nobunzulu bokusasazwa kweekhemikhali kwi-interlayer kunye nokuveliswa kwee-deep intercalation compounds zithintelwe kwaye zilinganiselwe, nto leyo echaphazela ngakumbi ukuphuculwa kwe-expansion degree. Ke ngoko, kufuneka ukuba umxholo wokungcola kwe-graphite ube ngaphakathi koluhlu oluchaziweyo, ngakumbi ukungcola kwe-granular akufuneki kubekho, kungenjalo izikali ze-graphite ziya kunqunyulwa ngexesha lenkqubo yokucinezela, eya kunciphisa umgangatho wezinto ezibunjiweyo. Umhleli olandelayo we-Furuite graphite uzisa ukuba ubumsulwa bezinto eziluhlaza ze-graphite buchaphazela iipropati ze-expanded graphite:
Ubungakanani besuntswana legrafiti bunempembelelo enkulu ekuvelisweni kwegrafiti eyandisiweyo. Ubungakanani besuntswana bukhulu, indawo ethile yomphezulu incinci, kwaye indawo ebandakanyeka kwimpendulo yamakhemikhali incinci ngokufanayo. Ngokwahlukileyo koko, ukuba isuntswana incinci, indawo yayo yomphezulu ikhulu, kwaye indawo yokuthatha inxaxheba kwiimpendulo zamakhemikhali inkulu. Ukusuka kuhlalutyo lobunzima bezinto zamakhemikhali ezihlaselayo, akunakuphepheka ukuba amasuntswana amakhulu enze izikali zegrafiti zibe nkulu, kwaye izithuba phakathi kwamasuntswana ziya kuba nzulu, ngoko ke kunzima ukuba iikhemikhali zingene kumasuntswana ngamnye, kwaye kunzima nangakumbi ukusasaza kwizithuba phakathi kwamasuntswana ukuze kubangele amasuntswana anzulu. Oku kunempembelelo enkulu kwinqanaba lokwandiswa kwegrafiti eyandisiweyo. Ukuba amasuntswana egrafiti alungile kakhulu, indawo ethile yomphezulu iya kuba nkulu kakhulu, kwaye impendulo yomphetho iya kuba namandla, nto leyo engayi kunceda ekudalweni kweekhompawundi zokudibanisa. Ke ngoko, amasuntswana egrafiti akufuneki abe makhulu kakhulu okanye abe mancinci kakhulu.
Kwimeko efanayo, kubudlelwane phakathi koxinano olukhululekileyo kunye nobukhulu be-particle ye-graphite ekhulisiweyo eyenziwe nge-graphite enobukhulu obahlukeneyo be-particle, okukhona uxinano olukhululekileyo luncinci, kokukhona isiphumo se-graphite ekhulisiweyo singcono. Nangona kunjalo, kwimveliso yokwenyani, kuboniswa ukuba uluhlu lobungakanani be-particle ye-graphite esetyenzisiweyo lungcono ukusuka kwi--30 mesh ukuya kwi-+100 mesh, eyona mpembelelo ifanelekileyo.
Impembelelo yobukhulu be-graphite particle ikwabonakala ngokuba ukwakheka kobukhulu be-particle yezithako akufuneki kube banzi kakhulu, oko kukuthi, umahluko phakathi kwe-particle enkulu kunye ne-particle encinci akufuneki ibe nkulu kakhulu, kwaye isiphumo sokucubungula siya kuba ngcono ukuba ukwakheka kobukhulu be-particle kuyafana. Iimveliso ze-graphite ze-Furuite zenziwe nge-graphite yendalo, kwaye umgangatho ufuneka kakhulu kwinkqubo yemveliso. Iimveliso ze-graphite ezicutshungulwayo nezivelisiweyo ziye zathandwa ngabathengi abatsha nabadala kangangeminyaka emininzi, kwaye uhlala wamkelekile ukubonisana nokuthenga!
Ixesha lokuthumela: Matshi-13-2023