Tom qab lub expandable graphite yog instantaneously kho nyob rau hauv high kub, lub teev ua worm-zoo li, thiab lub ntim yuav nthuav 100-400 zaug. Qhov no nthuav graphite tseem tuav cov khoom ntawm ntuj graphite, muaj kev nthuav dav zoo, yog xoob thiab ntxeem tau, thiab tiv taus qhov kub thiab txias nyob rau hauv cov xwm txheej oxygen barrier. Kev dav dav, tuaj yeem nyob nruab nrab ntawm -200 ~ 3000 ℃, cov khoom siv tshuaj lom neeg ruaj khov nyob rau hauv qhov kub thiab txias, kev kub siab lossis hluav taws xob, nyob rau hauv kev sib khi thiab zoo li qub ntawm cov roj av, tshuaj, hluav taws xob, aviation, tsheb, nkoj thiab kev lag luam muaj ntau yam kev siv. Cov nram qab no editors ntawm Furuit Graphite yuav coj koj kom nkag siab txog cov txheej txheem ntau lawm ntawm kev nthuav dav graphite:
1. Ultrasonic oxidation txoj kev los ua expandable graphite.
Nyob rau hauv tus txheej txheem ntawm kev npaj expandable graphite, ultrasonic kev co yog ua nyob rau hauv lub anodized electrolyte, thiab lub sij hawm ntawm ultrasonic kev co yog tib yam li cov anodization. Txij li thaum lub vibration ntawm electrolyte los ntawm ultrasonic yoj yog qhov zoo rau lub polarization ntawm cathode thiab anode, qhov ceev ntawm anodic oxidation yog ceev thiab lub sij hawm oxidation yog luv;
2. Txoj kev ntsev molten ua rau expandable graphite.
Sib tov ob peb ntxig nrog graphite thiab cua sov los tsim cov graphite nthuav dav;
3. Cov txheej txheem roj-theem diffusion yog siv los ua kom nthuav dav graphite.
Cov graphite thiab cov khoom siv intercalated raug coj mus rau ob qhov kawg ntawm lub tshuab nqus tsev kaw, rhuab rau qhov kawg ntawm cov khoom sib txuas, thiab qhov tsim nyog cov tshuaj tiv thaiv siab sib txawv yog tsim los ntawm qhov kub ntawm qhov sib txawv ntawm ob qhov kawg, kom cov khoom sib txuas. nkag mus rau lub flake graphite txheej nyob rau hauv lub xeev ntawm me me molecules, yog li Npaj expandable graphite. Tus naj npawb ntawm cov khaubncaws sab nraud povtseg ntawm expandable graphite tsim los ntawm txoj kev no tuaj yeem tswj tau, tab sis nws cov nqi ntau lawm yog siab;
4. Cov tshuaj intercalation txoj kev ua rau expandable graphite.
Thawj cov khoom siv raw siv rau kev npaj yog siab carbon flake graphite, thiab lwm yam tshuaj reagents xws li concentrated sulfuric acid (tshaj 98%), hydrogen peroxide (tshaj 28%), poov tshuaj permanganate, thiab lwm yam. yog tag nrho cov qib industrial reagents. Cov kauj ruam dav dav ntawm kev npaj yog raws li hauv qab no: ntawm qhov tsim nyog kub, cov tshuaj hydrogen peroxide, ntuj flake graphite thiab concentrated sulfuric acid ntawm cov proportions sib txawv yog reacted rau ib lub sij hawm ntawm lub sij hawm nyob rau hauv tas li stirring nrog sib txawv ntxiv cov txheej txheem, ces ntxuav nrog dej. nruab nrab, thiab centrifuged, Tom qab lub cev qhuav dej, lub tshuab nqus tsev ziab ntawm 60 ° C;
5. Electrochemical ntau lawm ntawm expandable graphite.
Graphite hmoov yog kho nyob rau hauv ib tug muaj zog acid electrolyte kom expandable graphite, hydrolyzed, ntxuav thiab qhuav. Raws li cov kua qaub muaj zog, sulfuric acid lossis nitric acid feem ntau yog siv. Lub expandable graphite tau los ntawm txoj kev no muaj cov ntsiab lus sulfur tsawg.
Post lub sij hawm: May-27-2022