Zithini iimpawu zegrafiti enokukhuliswa emva kokufudumeza ibe yigrafiti enokukhuliswa?

Iimpawu zokwandiswa kweishidi legrafayithi elandisiweyozahlukile kwezinye iiarhente zokwandisa. Xa ifudunyezwa ukuya kubushushu obuthile, i-graphite enokukhuliswa iqala ukwanda ngenxa yokubola kwee-compounds ezifunxwe kwi-lattice ye-interlayer, ebizwa ngokuba yi-induction heating temperature. Iyanda ngokupheleleyo kwi-1000 ℃ kwaye ifikelele kwi-volume ephezulu. I-expansion volume ingafikelela ngaphezu kwamaxesha angama-200 exabiso lokuqala. I-expanded graphite ibizwa ngokuba yi-expanded graphite okanye i-graphite worm, etshintsha ukusuka kwi-original flake shape ukuya kwi-worm shape enobunzima obuphantsi, okwenza umaleko we-thermal insulation olungileyo kakhulu. I-expanded graphite ayisiyo nje kuphela umthombo wekhabhoni kwinkqubo yokwandisa, kodwa ikwangumaleko we-insulation. Ingasebenza ngempumelelogquma ubushushuXa itsha, ineempawu zokukhupha ubushushu obuphantsi, ukulahleka okuncinci kobunzima kunye negesi encinci yokukhupha ulwelo.

Zithini iimpawu zegrafiti enokukhuliswa emva kokufudumeza ibe yigrafiti enokukhuliswa?

Iimpawu zegrafiti eyandisiweyo

① Ukumelana noxinzelelo olunamandla,ukuguquguquka, i-plasticity kunye nokuzithambisa;

② Ukumelana okunamandla nobushushu obuphezulu, obuphantsi,umhlwakunye nemitha;

③ Iimpawu ezinamandla kakhulu zenyikima;

④ Inamandla kakhuluukuhanjiswa komoya;

⑤Iimpawu ezinamandla zokulwa nokwaluphala kunye nokungaguquguquki.

⑥ Iyakwazi ukumelana nokunyibilika nokungena kweentsimbi ezahlukeneyo;

⑦ Ayinatyhefu, ayinazo izinto ezibangela umhlaza kwaye ayonakalisi okusingqongileyo.

Iindlela ezahlukeneyo zophuhliso lwegrafiti eyandisiweyo zezi zilandelayo:

1. Igrafayithi eyandisiweyo ngeenjongo ezikhethekileyo

Uvavanyo lubonisa ukuba iimpethu zegrafiti zinomsebenzi wokufunxa amaza e-electromagnetic. Igrafiti eyandisiweyo kufuneka ihlangabezane neemfuno ezilandelayo: (1) ubushushu bokuqala bokwanda obuphantsi kunye nomthamo omkhulu wokwanda; (2) Iimpawu zeekhemikhali zizinzile, zigcinwa iminyaka emi-5, kwaye umlinganiselo wokwanda ngokusisiseko awuboli; (3) Umphezulu wegrafiti eyandisiweyo awunacala kwaye awunawo umhlwa kwikhatriji.

2. Igrafayithi eyandisiweyo yegranular

I-graphite encinci enwetshiweyo ibhekisa ikakhulu kwi-graphite enokwandiswa ene-mesh engama-300 enomthamo wokwandiswa we-100ml / g. Le mveliso isetyenziselwa ikakhulu i-retardant yomliloiingubo zokwaleka, nto leyo efunwa kakhulu.

3. Igrafiti eyandisiweyo enobushushu obuphezulu bokuqala bokwandiswa

Ubushushu bokuqala bokwandiswa kwegrafiti ekhulisiweyo enobushushu obuphezulu bokuqala bokwandiswa yi-290-300 ℃, kwaye umthamo wokwandiswa yi-≥ 230ml / g. Olu hlobo lwegrafiti ekhulisiweyo lusetyenziswa ikakhulu kwi-retardant yomlilo yeplastiki yobunjineli kunye nerabha.

4. Igrafayithi eguqulweyo kumphezulu

Xa i-graphite ekhulisiweyo isetyenziswa njengezinto ezithintela ilangatye, ibandakanya ukuhambelana phakathi kwe-graphite nezinye izinto. Ngenxa yokuba umphezulu we-graphite uneeminerali ezininzi, ayithambisi kakhulu kwaye ayithambisi kakhulu. Ke ngoko, umphezulu we-graphite kufuneka uguqulwe ukuze kusonjululwe ingxaki yokuhambelana phakathi kwe-graphite nezinye izinto. Kucetyisiwe ukuba kwenziwe mhlophe umphezulu we-graphite, oko kukuthi, ukugubungela umphezulu we-graphite ngefilimu emhlophe eqinileyo, ingxaki enzima ukuyisombulula. Ibandakanya i-membrane chemistry okanye i-surface chemistry. Ilebhu inokukwazi ukwenza njalo, kwaye kukho ubunzima ekuphuhlisweni kwemizi-mveliso. Olu hlobo lwe-graphite emhlophe ekhulisiweyo isetyenziswa kakhulu njengengubo ethintela ilangatye.

5. Ubushushu bokuqala obuphantsi bokwandiswa kunye nobushushu obuphantsi begrafiti eyandisiweyo

Olu hlobo lwegrafiti eyandisiweyo luqala ukwanda kwi-80-150 ℃, kwaye umthamo wokwandiswa ufikelela kwi-250ml / g kwi-600 ℃. Ubunzima ekulungiseleleni igrafiti eyandisiweyo ukuhlangabezana nale meko zezi: (1) ukukhetha i-arhente efanelekileyo yokudibanisa; (2) Ukulawula kunye nokulawula iimeko zokomisa; (3) Ukumisela ukufuma; (4) Isisombululo seengxaki zokukhusela okusingqongileyo.