Sechinhu chitsva chinoshanda kabhoni, Yakawedzera Graphite (EG) chinhu chakasununguka uye chine porous honye-sechinhu chinowanikwa kubva kune yakasikwa graphite flake nekupindirana, kuwacha, kuomesa uye kuwedzera tembiricha.EG Pamusoro pezvinhu zvakanakisa zvechisikigo graphite pachayo, senge kutonhora nekupisa kupisa, corrosion resistance uye self-lubrication, inewo hunhu hwekupfava, compression resilience, adsorption, ecological environment coordination, biocompatibility uye radiation kuramba iyo yakasikwa graphite. haana.Kare sekutanga kwema1860s, Brodie akawana yakawedzera graphite nekudziisa yakasikwa graphite nemakemikari reagents senge sulfuric acid uye nitric acid, asi kushandiswa kwayo hakuna kutanga kusvika zana remakore gare gare.Kubva ipapo, nyika zhinji dzakatangisa kutsvagisa uye kusimudzira yakawedzera graphite, uye vakaita budiriro huru yesainzi.
Yakawedzerwa graphite pakupisa kwepamusoro inogona kuwedzera ipapo vhoriyamu ye150 kusvika ku300 nguva, kubva pashiti kuenda kune honye, kuitira kuti chimiro chakasununguka, chine porous uye chakakombama, nzvimbo yepamusoro inowedzerwa, simba repamusoro rinovandudzwa, adsorption yeflake graphite. yakakwidziridzwa, uye girafu yakaita sehonye inogona kuve yega-mosaic, iyo inowedzera kupfava kwayo, kusimba uye purasitiki.
Expandable graphite (EG) i graphite interlayer compound inowanikwa kubva kune yakasikwa flake graphite nemakemikari oxidation kana electrochemical oxidation.Panyaya yechimiro, EG is nanoscale composite material.Kana iyo EG inowanikwa neiyo oxidation yeyakajairwa H2SO4 inoiswa kune yakanyanya tembiricha inopfuura 200 ℃, iyo REDOX reaction inoitika pakati pe sulfuric acid ne graphite kabhoni maatomu, ichiburitsa huwandu hukuru hweSO2, CO2 uye mhute yemvura, zvekuti EG inotanga kuwedzera. , uye inosvika pakureba kwayo pa1 100 ℃, uye vhoriyamu yayo yekupedzisira inogona kusvika 280 nguva dzekutanga.Iyi pfuma inobvumira EG kudzima murazvo nekuwedzera kwechinguva muhukuru kana moto waitika.
Iyo EG inodzoreredza murazvo ndeyemurazvo unodzoreredza nzira yechikamu chekugadzika, icho chinodzora murazvo nekunonoka kana kukanganisa kugadzirwa kwezvinhu zvinobvira kubva muzvinhu zvakasimba.EG Kana ichipisa kune imwe nhanho, inotanga kuwedzera, uye yakawedzerwa graphite ichava chimiro chevermicular ine density yakaderera zvikuru kubva pachiyero chepakutanga, nokudaro ichiita jira rakanaka rekudzivirira.Iyo yakawedzera graphite sheet haisi iyo chete kabhoni sosi mune yakawedzera sisitimu, asiwo iyo yekuvharisa layer, iyo inogona kunyatso kupisa kupisa, kunonoka uye kumisa kuparara kwepolymer;Panguva imwecheteyo, huwandu hwakawanda hwekupisa hunobatwa panguva yekuwedzera, iyo inoderedza kutonhora kwegadziriro.Mukuwedzera, panguva yekuwedzera, ion acid mu interlayer inosunungurwa kukurudzira kupera uye carbonization.
EG sehalogen-isina kuchengetedzwa kwezvakatipoteredza murazvo unodzoreredza, zvakanakira zvawo ndezvi: kwete-chepfu, haiburitse magasi ane muchetura uye anoparadza kana yapiswa, uye inoburitsa shoma gasi;Mari yekuwedzera idiki;Hapana kudonha;Kuchinja kwakasimba kwezvakatipoteredza, hapana chiitiko chekutama;Uv kugadzikana uye kugadzikana kwechiedza zvakanaka;Chitubu chakakwana uye nzira yekugadzira iri nyore.Nokudaro, EG yakashandiswa zvakanyanya mumhando dzakasiyana-siyana dzemoto uye zvinhu zvinopisa moto, zvakadai sezvisimbiso zvemoto, mapuranga emoto, zvidzitiro zvemoto uye anti-static coatings, mabhegi emoto, mapurasitiki ekudzivirira moto, mhete yemoto uye mapurasitiki anopisa moto.
Nguva yekutumira: Nov-09-2023