Cov graphite nthuav dav yog ib hom khoom xoob thiab porous zoo li kab uas tau los ntawm cov flake graphite ntuj los ntawm kev sib xyaw, ntxuav, ziab thiab nthuav dav kub siab. Nws yog cov khoom siv carbon tshiab xoob thiab porous. Vim yog qhov ntxig ntawm tus neeg sawv cev sib xyaw, lub cev graphite muaj cov yam ntxwv ntawm kev tiv thaiv cua sov thiab kev ua hluav taws xob, thiab siv dav hauv kev sib khi, kev tiv thaiv ib puag ncig, nplaim taws retardant thiab cov ntaub ntawv fireproof thiab lwm yam teb. Tus editor hauv qab no ntawm Furuite Graphite qhia txog cov qauv thiab qhov chaw morphology ntawm cov graphite nthuav dav:
Nyob rau xyoo tas los no, tib neeg tau them sai sai rau kev ua qias tuaj ib puag ncig, thiab cov khoom graphite uas tau npaj los ntawm txoj kev electrochemical muaj qhov zoo ntawm kev ua qias tuaj ib puag ncig me ntsis, cov ntsiab lus sulfur tsawg thiab tus nqi qis. Yog tias cov electrolyte tsis muaj kuab paug, nws tuaj yeem rov siv dua, yog li nws tau nyiam ntau qhov kev saib xyuas. Cov tshuaj sib xyaw ntawm phosphoric acid thiab sulfuric acid tau siv los ua electrolyte los txo qhov concentration ntawm acid, thiab ntxiv phosphoric acid kuj ua rau muaj kev tiv thaiv oxidation ntawm cov graphite nthuav dav. Cov graphite nthuav dav uas tau npaj muaj cov nyhuv zoo rau kev nplaim taws thaum siv los ua cov khoom rwb thaiv tsev thermal thiab cov ntaub ntawv hluav taws.
Kev ntsuas qhov me me ntawm cov flake graphite, expandable graphite thiab expanded graphite tau raug kuaj pom thiab soj ntsuam los ntawm SEM. Thaum kub siab, cov tshuaj sib xyaw ua ke hauv cov graphite expandable yuav lwj ua cov pa roj, thiab cov pa roj yuav tsim kom muaj lub zog tsav tsheb muaj zog los nthuav cov graphite raws li kev taw qhia ntawm C axis los tsim cov graphite nthuav dav hauv cov duab kab laug sab. Yog li ntawd, vim yog kev nthuav dav, thaj chaw tshwj xeeb ntawm cov graphite nthuav dav nce ntxiv, muaj ntau lub qhov hws zoo li lub cev ntawm cov lamellae, cov qauv lamellar tseem nyob, lub zog van der Waals ntawm cov txheej raug rhuav tshem, cov tshuaj sib xyaw ua ke tau nthuav dav tag nrho, thiab qhov sib nrug ntawm cov txheej graphite nce ntxiv.
Lub sijhawm tshaj tawm: Lub Peb Hlis-10-2023