Faɗaɗɗen graphite wani abu ne mai sako-sako da buguwa mai kama da tsutsotsi wanda aka shirya daga flakes ɗin graphite ta hanyoyin haɗin kai, wanke ruwa, bushewa da faɗaɗa zafin jiki. Fadada graphite iya nan take fadada 150 ~ 300 sau a girma a lokacin da fallasa zuwa high zafin jiki, canza daga flake zuwa tsutsa-kamar, sabõda haka, da tsarin ne sako-sako da, porous da lankwasa, da surface yankin ne kara girma, da surface makamashi da aka inganta, da kuma adsorption ƙarfi na flake graphite an inganta. hade, wanda ke ƙara taushi, juriya da filastik. Editan mai zuwa zai bayyana muku manyan hanyoyin ci gaba da yawa na faɗaɗa graphite:
1. Granular faɗaɗa graphite: Ƙananan faifan faifan faifan ƙwanƙwasa galibi yana nufin graphite raga 300 mai faɗaɗawa, kuma ƙarar haɓakarsa shine 100ml/g. Ana amfani da wannan samfurin musamman don rufewar wuta, kuma buƙatarsa tana da girma sosai.
2. Fadada graphite tare da babban zafin jiki na haɓakawa na farko: zafin zazzabi na farko shine 290-300 ° C, kuma ƙarar haɓaka shine ≥ 230 ml / g. Irin wannan nau'in graphite mai faɗaɗa ana amfani dashi musamman don hana wuta na robobin injiniya da roba.
3. Ƙananan zafin jiki na farko da ƙananan zafin jiki na graphite: yawan zafin jiki wanda irin wannan nau'i na graphite ya fara fadada shine 80-150 ° C, kuma ƙarar ƙarar ya kai 250ml/g a 600 ° C.
Faɗaɗɗen masana'antun graphite na iya aiwatar da faɗaɗa graphite zuwa sassauƙan graphite don amfani azaman kayan rufewa. Idan aka kwatanta da kayan hatimi na gargajiya, graphite mai sassauƙa yana da faɗin kewayon yanayin zafi mai amfani, kama daga -200°C zuwa 450°C a cikin iska, kuma yana da ƙaramin haɓakar haɓakar thermal. An yi amfani da shi sosai a cikin petrochemical, inji, ƙarfe, makamashin atomic da sauran masana'antu.
Lokacin aikawa: Satumba-14-2022