1) Taw qhia ntawm expandable graphite
Expandable graphite, tseem hu ua saj zawg zog graphite los yog worm graphite, yog ib hom tshiab ntawm cov khoom siv carbon.Expanded graphite muaj ntau qhov zoo, xws li thaj chaw loj tshwj xeeb, kev ua haujlwm siab, tshuaj lom neeg ruaj khov thiab kub tsis kam.Cov txheej txheem kev npaj dav dav ntawm cov graphite nthuav dav yog coj cov flake graphite ua cov khoom siv, ua ntej tsim cov graphite nthuav dav los ntawm cov txheej txheem oxidation, thiab tom qab ntawd nthuav nws mus rau hauv nthuav graphite.Nyob rau hauv cov ntaub ntawv ntawm qhov kub thiab txias, cov khoom siv graphite nthuav tau tam sim ntawd nthuav dav 150 ~ 300 zaug hauv ntim, thiab hloov los ntawm flake mus rau worm zoo li, kom cov qauv yog xoob, ntxeem tau thiab nkhaus, qhov chaw nto yog nthuav, lub zog saum npoo yog txhim kho. , lub zog adsorption ntawm flake graphite yog txhim kho, thiab cov cab zoo li graphite tuaj yeem kos los ntawm nws tus kheej, yog li cov khoom siv muaj lub luag haujlwm ntawm nplaim hluav taws, sealing thiab adsorption, thiab siv dav hauv kev ua neej, kev ua tub rog, kev tiv thaiv ib puag ncig. , chemical kev lag luam thiab lwm yam.
2) Txoj kev npaj ntawm nthuav graphite
Tshuaj oxidation thiab electrochemical oxidation feem ntau yog siv rau nthuav graphite.Cov txheej txheem tshuaj oxidation ib txwm muaj cov txheej txheem yooj yim thiab ruaj khov, tab sis muaj qee qhov teeb meem xws li pov tseg ntawm cov kua qaub thiab cov ntsiab lus sulfur siab ntawm cov khoom.Cov txheej txheem electrochemical tsis siv cov oxidants, cov kua qaub tuaj yeem rov ua dua rau ntau zaus, nrog kev ua qias tuaj ib puag ncig thiab tus nqi qis, tab sis cov txiaj ntsig qis thiab cov kev xav tau ntawm cov khoom siv electrode yog siab.Tam sim no, nws tsuas yog txwv rau kev tshawb fawb hauv chav kuaj.Ntxiv rau txoj kev sib txawv oxidation, ob txoj kev muaj tib txoj kev kho tom qab xws li deacidification, dej ntxuav thiab ziab.Tshuaj oxidation txoj kev yog txoj kev siv dav tshaj plaws kom deb li deb.Cov txheej txheem yog mature thiab tau dav nrov thiab siv nyob rau hauv kev lag luam.
3)Qhov sib txawv ntawm nthuav graphite thiab graphene
Graphene thiab nthuav graphite muaj kev ua tau zoo sib txawv hauv ob qho tib si cov khoom siv thiab daim ntawv thov teb.Kev nthuav dav graphite tuaj yeem siv los ua cov khoom siv raw rau graphene ntau lawm.Piv txwv li, Hummers txoj kev yuav siv tau kom tau graphene oxide los ntawm ultrasonic expansion ntawm graphite oxide.Thaum cov graphite nthuav dav yog stripped rau hauv ib thooj, nws dhau los ua graphene.Yog hais tias nws yog stripped rau hauv ob peb txheej, nws yog ob peb txheej ntawm graphene.Graphene nanosheets tuaj yeem npaj los ntawm ntau tshaj kaum rau 30 txheej.
4) Cov tswv yim thov teb ntawm nthuav graphite
1. Kev siv cov ntaub ntawv kho mob
Kev hnav khaub ncaws kho mob ua los ntawm kev nthuav dav graphite tuaj yeem hloov pauv feem ntau ntawm cov ntaub qhwv ib txwm vim nws cov khoom zoo heev.
2. Kev siv cov khoom siv tub rog
Cov graphite nthuav dav yog crushed rau hauv cov hmoov zoo, uas muaj zog tawg thiab nqus cov yam ntxwv rau infrared yoj.Ua nws cov hmoov zoo rau hauv cov khoom siv tiv thaiv infrared zoo heev plays lub luag haujlwm tseem ceeb hauv photoelectric countermeasure hauv kev ua tsov rog niaj hnub no.
3. Kev siv cov ntaub ntawv tiv thaiv ib puag ncig
Expanded graphite yog siv dav hauv kev tiv thaiv ib puag ncig vim nws qhov ntom ntom, tsis muaj tshuaj lom, tsis muaj kuab lom, kho tau yooj yim thiab zoo heev adsorption.
4. Biomedical cov ntaub ntawv
Cov khoom siv carbon muaj kev sib raug zoo nrog tib neeg lub cev thiab yog cov khoom siv biomedical zoo.Raws li hom tshiab ntawm cov khoom siv carbon, nthuav cov khoom siv graphite muaj cov yam ntxwv zoo adsorption rau cov organic thiab lom macromolecules.Nws muaj biocompatibility zoo, tsis muaj tshuaj lom, saj tsis qab thiab tsis muaj kev phiv.Nws muaj qhov kev thov dav dav hauv cov ntaub ntawv biomedical.
Post lub sij hawm: May-17-2022