Menene halayen graphite mai faɗaɗawa bayan dumama zuwa graphite mai faɗaɗawa?

Halayen faɗaɗawa natakardar graphite mai faɗaɗawasun bambanta da sauran sinadaran faɗaɗawa. Idan aka dumama shi zuwa wani zafin jiki, graphite mai faɗaɗawa zai fara faɗaɗawa saboda rugujewar mahaɗan da ke cikin layin da ke tsakanin layukan, wanda ake kira zafin faɗaɗawa na farko. Yana faɗaɗa gaba ɗaya a 1000 ℃ kuma yana kaiwa matsakaicin girma. Ƙarar faɗaɗawa na iya kaiwa fiye da sau 200 na ƙimar farko. Ana kiran graphite mai faɗaɗawa graphite ko tsutsar graphite mai faɗaɗawa, wanda ke canzawa daga siffar flake ta asali zuwa siffar tsutsar da ke da ƙarancin yawa, yana samar da kyakkyawan Layer na hana zafi. Graphite mai faɗaɗawa ba wai kawai tushen carbon bane a cikin tsarin faɗaɗawa, har ma da Layer mai hana ruwa. Zai iya yin aiki yadda ya kamatarufe zafiA cikin wuta, tana da halaye na ƙarancin fitar da zafi, ƙarancin asarar taro da ƙarancin iskar gas.

Menene halayen graphite mai faɗaɗawa bayan dumama zuwa graphite mai faɗaɗawa?

Halaye na faɗaɗa graphite

① Ƙarfin juriya ga matsin lamba,sassauci, plasticity da kuma shafa mai kai;

② Juriya mai ƙarfi ga yanayin zafi mai yawa,tsatsada kuma radiation;

③ Ƙarfin halayen girgizar ƙasa mai ƙarfi sosai;

④ Ƙarfi sosaikwararar wutar lantarki;

⑤Ƙarfin kariya daga tsufa da kuma hana ɓarna.

⑥ Yana iya tsayayya da narkewar ƙarfe daban-daban da shigar azzakari;

⑦ Ba ya da guba, ba ya ƙunshe da wani abu mai haifar da cutar kansa kuma ba ya cutar da muhalli.

Da dama daga cikin hanyoyin ci gaban graphite da aka faɗaɗa sune kamar haka:

1. Faɗaɗa graphite don dalilai na musamman

Gwaje-gwaje sun nuna cewa tsutsotsi masu siffar graphite suna da aikin shanye raƙuman lantarki. Dole ne graphite mai faɗin ya cika waɗannan buƙatu: (1) ƙarancin zafin farko na faɗaɗawa da babban girman faɗaɗawa; (2) Sifofin sinadarai suna da ƙarfi, an adana su na tsawon shekaru 5, kuma rabon faɗaɗawa ba ya ruɓewa; (3) Fuskar graphite mai faɗin yana tsaka tsaki kuma ba shi da tsatsa ga akwatin harsashi.

2. Graphite mai faɗi

Ƙaramin graphite mai faɗaɗa barbashi galibi yana nufin graphite mai faɗaɗa raga 300 tare da girman faɗaɗawa na 100ml / g. Ana amfani da wannan samfurin galibi don hana harshen wuta.shafi, wanda ake buƙata sosai.

3. Faɗaɗa graphite tare da zafin faɗaɗawa mai girma na farko

Zafin faɗaɗawa na farko na graphite mai faɗaɗawa tare da babban zafin faɗaɗawa na farko shine 290-300 ℃, kuma girman faɗaɗawa shine ≥ 230ml / g. Wannan nau'in graphite da aka faɗaɗa galibi ana amfani da shi don hana harshen wuta na robobi da roba na injiniya.

4. Graphite da aka gyara a saman

Idan aka yi amfani da graphite mai faɗaɗa a matsayin kayan hana harshen wuta, yana da alaƙa da daidaito tsakanin graphite da sauran abubuwan haɗin. Saboda yawan ma'adinan saman graphite, ba shi da lipophilic ko hydrophilic. Saboda haka, dole ne a gyara saman graphite don magance matsalar daidaito tsakanin graphite da sauran abubuwan haɗin. An ba da shawarar a yi fari a saman graphite, wato, a rufe saman graphite da farin fim mai ƙarfi, wanda matsala ce mai wahalar warwarewa. Ya ƙunshi sinadarai na membrane ko sinadaran saman. Dakin gwaje-gwaje na iya yin hakan, kuma akwai matsaloli a masana'antu. Wannan nau'in graphite mai faɗaɗa ana amfani da shi galibi azaman murfin hana harshen wuta.

5. Ƙananan zafin jiki na farko na faɗaɗawa da kuma ƙaramin zafin jiki da aka faɗaɗa graphite

Wannan nau'in graphite da aka faɗaɗa yana fara faɗaɗawa a zafin 80-150 ℃, kuma girman faɗaɗawa ya kai 250ml / g a zafin 600 ℃. Matsalolin da ake fuskanta wajen shirya graphite mai faɗaɗawa wanda zai dace da wannan yanayin sune: (1) zaɓar wakilin haɗin gwiwa mai dacewa; (2) Kulawa da ƙwarewar yanayin bushewa; (3) Tabbatar da danshi; (4) Maganin matsalolin kare muhalli.