1) Gabatarwar graphite mai faɗaɗawa
Grafite mai faɗaɗa, kuma aka sani da sassauƙan graphite ko graphite tsutsa, sabon nau'in kayan carbon ne. Fadada graphite yana da fa'idodi da yawa, kamar ƙayyadaddun yanki na musamman na surce, babban aikin saman, kyakkyawan kwanciyar hankali na sinadarai da juriya mai zafi. Tsarin shirye-shiryen gama-gari na faɗaɗɗen graphite shine ɗaukar graphite flake na halitta azaman kayan, da farko samar da graphite mai faɗaɗawa ta hanyar tsarin iskar shaka, sannan kuma faɗaɗa shi cikin faɗaɗa graphite. Idan akwai babban zafin jiki, kayan graphite da aka faɗaɗa nan take na iya faɗaɗa sau 150 ~ 300 a cikin ƙarar, kuma suna canzawa daga flake zuwa tsutsa kamar, don haka tsarin ya kasance sako-sako, mai lankwasa da lanƙwasa, an faɗaɗa farfajiyar, ingantaccen makamashin saman yana inganta. , da adsorption ƙarfi na flake graphite an inganta, kuma tsutsa kamar graphite za a iya saka da kanta, sabõda haka, abu yana da ayyuka na harshen retardant, sealing da adsorption, kuma ana amfani da ko'ina a fagen rayuwa, soja, kare muhalli. , masana'antar sinadarai da sauransu.
2) Hanyar shiri na fadada graphite
Chemical oxidation da electrochemical hadawan abu da iskar shaka ana amfani da mafi yawa don fadada graphite. Hanyar hadawan abu da iskar shaka na gargajiya yana da tsari mai sauƙi da ingantaccen inganci, amma akwai wasu matsaloli kamar ɓata acid da babban sulfur na samfuran. Hanyar electrochemical ba ta amfani da oxidants, za a iya sake yin amfani da maganin acid sau da yawa, tare da ƙarancin gurɓataccen muhalli da ƙananan farashi, amma yawan amfanin ƙasa yana da ƙasa kuma abubuwan da ake bukata don kayan lantarki suna da yawa. A halin yanzu, an iyakance shi ne kawai ga binciken dakin gwaje-gwaje. Baya ga hanyoyin oxidation daban-daban, hanyoyin biyu suna da iri ɗaya bayan jiyya kamar deacidification, wanke ruwa da bushewa. Hanyar oxidation na sinadari ita ce hanyar da aka fi amfani da ita zuwa yanzu. Tsarin ya balaga kuma ya shahara kuma an yi amfani da shi a masana'antu.
3)Bambanci tsakanin faɗaɗa graphite da graphene
Graphene da faffadan graphite suna da ayyuka daban-daban a cikin tsarin kayan abu da filin aikace-aikace. Fadada graphite za a iya amfani da azaman albarkatun kasa don samar da graphene. Misali, ana iya amfani da hanyar Hummers don samun graphene oxide ta hanyar fadada ultrasonic na graphite oxide. Lokacin da aka zazzage graphite da aka faɗaɗa cikin yanki ɗaya, ya zama graphene. Idan an cire shi a cikin yadudduka da yawa, ƙananan yadudduka na graphene ne. Za a iya shirya nanosheets na Graphene daga fiye da goma zuwa 30 yadudduka.
4) Filayen aikace-aikacen aikace-aikace na faɗaɗa graphite
1. Aikace-aikacen kayan aikin likita
Tufafin likitancin da aka yi da graphite mai faɗaɗa zai iya maye gurbin mafi yawan gauze na gargajiya saboda yawancin kyawawan kaddarorinsa.
2. Aikace-aikacen kayan aikin soja
An murƙushe graphite da aka faɗaɗa cikin foda mai kyau, wanda ke da ƙarfi mai tarwatsewa da halayen sha zuwa igiyar infrared. Yin foda mai kyau a cikin kyakkyawan kayan kariya na infrared yana taka muhimmiyar rawa a cikin matakan photoelectric a yakin zamani.
3. Aikace-aikacen kayan kare muhalli
Fadada graphite ana amfani dashi sosai a fagen kariyar muhalli saboda ƙarancin ƙarancinsa, mara guba, mara gurɓataccen gurɓatacce, magani mai sauƙi da ingantaccen talla.
4. Kayan aikin likitanci
Kayan carbon yana da kyakkyawar dacewa da jikin ɗan adam kuma abu ne mai kyau na ilimin halitta. A matsayin sabon nau'in kayan carbon, faɗaɗa kayan graphite yana da kyawawan halaye na adsorption don kwayoyin halitta da macromolecules na halitta. Yana da kyau biocompatibility, mara guba, m kuma babu illa. Yana da fa'idar aikace-aikace mai fa'ida a cikin kayan aikin likitanci.
Lokacin aikawa: Mayu-17-2022