Yuav ua li cas graphene npaj nyob rau hauv graphene dispersion npaj cov khoom?

Graphene dispersion system, graphene (Graphene) yog cov khoom siv ob sab uas muaj cov pa roj carbon atoms nrog sp2 hybrid orbitals tsim los ntawm hexagonal honeycomb lattice flat films, tsuas yog carbon atom tuab. Graphene yog tam sim no nyuaj tshaj plaws nanomaterial nyob rau hauv lub ntiaj teb no. Nws yuav luag pob tshab, absorbing tsuas yog 2.3 feem pua ​​ntawm lub teeb. Lub thermal conductivity yog siab li 5300W / m, siab tshaj carbon nanotubes thiab pob zeb diamond, lub electron txav ntawm chav tsev kub yog ntau tshaj 15000cm2 / Vs, thiab siab tshaj carbon nanotubes los yog silicon crystals, thiab hluav taws xob resistivity tsuas yog hais txog {{7 }}Ω / m, qis dua tooj liab lossis nyiaj, rau cov khoom siv hluav taws xob tsawg tshaj plaws hauv ntiaj teb. Graphene muaj cov khoom siv hluav taws xob zoo heev, thermal conductivity thiab txhua yam muaj zog. Cov khoom sib xyaw ua los ntawm graphene thiab EP tuaj yeem muab kev ua si tag nrho rau qhov zoo ntawm ob qho tib si, qhia tias cov thermal conductivity, electromagnetism, tensile zog thiab modulus ntawm cov khoom sib xyaw ua tau zoo dua. Graphene dispersion npaj.

graphene npaj li cas?

Feem ntau muaj cov hauv qab no:

1. Qhov zoo ntawm kev siv tshuab stripping txoj kev: tus nqi npaj yog tsawg heev (yuav luag negligible), yooj yim kawm, thiab graphene tau los ntawm txoj kev no yog zoo heev, ob peb yam tsis xws luag, zoo heev kev tsis zoo: qhov luaj li cas ntawm graphene tau yog me me. , feem ntau ntawm 10-100um, thiab nws yog tsis yooj yim sua los npaj rau ib tug loj scale.

2. Qhov zoo ntawm SiC epitaxial kev loj hlob: nws tuaj yeem loj hlob hauv qhov loj me (4 ntiv tes hauv qhov loj tau tshaj tawm), thiab cov graphene tau txais tau zoo heev. Qhov tsis zoo: tus nqi raw khoom siab, cov cuab yeej siv siab, kev loj hlob kub (1400 degree), cov khoom siv dav dav tsis tuaj yeem ncav cuag, thiab nws nyuaj rau kev loj hlob graphene ntawm qhov loj heev.

3. Qhov zoo ntawm graphite oxide txo txoj kev: txoj kev yooj yim, tsis tshua muaj nqi raw khoom, yeej tsis muaj nqi khoom, thiab yooj yim rau scale npaj qhov tsis zoo: cov graphene tau los ntawm txoj kev no muaj ntau yam tsis xws luag, hluav taws xob thiab khoom siv hluav taws xob tsis zoo.

4.CVD, qhov zoo ntawm cov tshuaj vapor deposition txoj kev: qhov loj hlob ib leeg tuaj yeem loj (ze li 20 ntiv tes), nws muaj peev xwm ua kom cov khoom loj, thiab cov graphene loj hlob muaj kev ua tau zoo thiab ob peb qhov tsis xws luag. Qhov tsis zoo: kev hloov pauv yog qhov nyuaj, thiab cov graphene loj hlob feem ntau yog polycrystalline.