Ma graphite owonjezera ndi chinthu chotayirira komanso chowoneka ngati nyongolotsi chokonzedwa kuchokera ku ma graphite flakes kudzera mu njira zolumikizirana, kutsuka madzi, kuyanika ndi kukulitsa kutentha. Graphite yowonjezera imatha kukulitsa nthawi yomweyo 150 ~ 300 mu voliyumu ikakumana ndi kutentha kwambiri, kusintha kuchokera ku flake kupita ku nyongolotsi, kotero kuti mawonekedwewo ndi otayirira, opindika komanso opindika, malo akukulirakulira, mphamvu yakumtunda imapangidwa bwino, komanso mphamvu ya adsorption ya flake graphite imakulitsidwa. kuphatikiza, zomwe zimawonjezera kufewa kwake, kulimba mtima ndi pulasitiki. Mkonzi wotsatirayo akufotokozereni njira zingapo zazikuluzikulu zakukula kwa graphite:
1. Granular kukula graphite: Small granular kukodzedwa graphite makamaka amatanthauza 300 mauna expandable graphite, ndipo mphamvu yake kukula ndi 100ml/g. Chogulitsachi chimagwiritsidwa ntchito kwambiri popaka zotchingira moto, ndipo kufunikira kwake ndi kwakukulu kwambiri.
2. graphite yowonjezera ndi kutentha kwakukulu koyambirira: kutentha koyambirira ndi 290-300 ° C, ndi voliyumu yowonjezera ndi ≥ 230 ml / g. Mtundu uwu wa graphite wokulitsidwa umagwiritsidwa ntchito makamaka pakuwotcha moto kwa mapulasitiki aumisiri wa mphira.
3. Kutentha kocheperako koyambirira koyambira ndi kutentha kochepa kumakulitsa graphite: kutentha kumene mtundu uwu wa graphite wowonjezereka umayamba kukula ndi 80-150 ° C, ndipo voliyumu yowonjezera imafika 250ml / g pa 600 ° C.
Opanga ma graphite owonjezera amatha kukonza ma graphite okulirapo kukhala ma graphite osinthika kuti agwiritsidwe ntchito ngati zida zosindikizira. Poyerekeza ndi zida zosindikizira zachikhalidwe, graphite yosinthika imakhala ndi kutentha kosiyanasiyana komwe kungagwiritsidwe ntchito, kuyambira -200 ° C mpaka 450 ° C mumlengalenga, ndipo imakhala ndi kagawo kakang'ono kakuwonjezera kutentha. Amagwiritsidwa ntchito kwambiri mu petrochemical, makina, zitsulo, mphamvu ya atomiki ndi mafakitale ena.
Nthawi yotumiza: Sep-14-2022