Mabhenefiti eGirazi Fiber muMidziyo yeMakemikari Inoshandiswa neGraphite

Graphite inoshandiswa zvakanyanya mukugadzira michina yemakemikari nekuda kwekusagona kwayo ngura, kufambisa magetsi, uye kugadzikana kwekupisa. Zvisinei, graphite inoratidza hunhu hwayo husina kusimba hwemakanika, kunyanya kana yakarova uye ichidedera.Faibha yegirazi, sechigadzirwa chine simba guru, chinopa mabhenefiti makuru kana chikashandiswa pamidziyo yemakemikari ine graphite nekuda kwekusapisa kwayo, kusaora kwayo, uye hunhu hwayo hwepamusoro hwemakanika. Mabhenefiti chaiwo anosanganisira:

(1) Kubudirira Kwekushanda Kwemakanika

Simba rekudhonza regirazi fiber rinogona kusvika 3,450 MPa, rinodarika graphite, iyo inowanzova pakati pe10 kusvika 20 MPa. Nekuisa girazi fiber muzvinhu zvegraphite, mashandiro ese emuchina anogona kuvandudzwa zvakanyanya, kusanganisira kuramba kubatwa uye kudedera.

(2) Kuramba Kuora

Fiber yegirazi inoratidza kusimba kwakanyanya kune akawanda maasidhi, alkalis, uye zvinonyungudutsa. Kunyange zvazvo girafiti pachayo isingagoni ngura zvakanyanya,girazi faibhainogona kupa mashandiro akanaka kwazvo munzvimbo dzine makemikari akawandisa, dzakadai semamiriro ekupisa kwakanyanya uye ekumanikidzwa kwakanyanya, mamiriro ekunze ane oxidizing, kana nzvimbo dzine hydrofluoric acid.

(3) Hunhu Hwakagadziridzwa hweThermal

Fiber yegirazi ine chiyero chakaderera kwazvo chekuwedzera kwekupisa (CTE) chinosvika 5.0×10−7/°C, zvichiita kuti ive yakasimba kana yave nekupisa kwakanyanya. Pamusoro pezvo, nzvimbo yayo yekunyunguduka (1,400–1,600°C) inopa simba rekudzivirira kupisa kwakanyanya. Hunhu uhwu hunogonesa michina yegirafiti yakasimbiswa nefiber yegirazi kuchengetedza kusimba kwechimiro uye mashandiro ayo munzvimbo dzinopisa zvakanyanya dzisina shanduko yakawanda.

(4) Zvakanakira Huremu

Nekuwanda kweinenge 2.5 g/cm3, fiber yegirazi inorema zvishoma kupfuura graphite (2.1–2.3g/cm3) asi yakareruka zvakanyanya kupfuura zvinhu zvesimbi zvakaita sesimbi kana aruminiyamu. Kubatanidza fiber yegirazi mumidziyo yegraphite kunowedzera kushanda pasina kuwedzera huremu zvakanyanya, zvichichengetedza hunhu hwemidziyo yacho hwakareruka uye hunotakurika.

(5) Kushanda Nemutengo Wakanaka

Zvichienzaniswa nezvimwe zvinhu zvinosanganisa zvinhu zvine simba guru (semuenzaniso, kabhoni fiber), girazi fiber rinodhura zvishoma, zvichiita kuti rive rakanakira kushandiswa mumaindasitiri makuru:

Mari Yezvinhu Zvisina Kugadzirwa:Faibha yegiraziinonyanya kushandisa girazi rinodhura zvishoma, nepo carbon fiber ichivimba neacrylonitrile inodhura.

Mari Yokugadzira: Zvinhu zvose zvinoda kugadziriswa nekupisa kwakanyanya uye nekumanikidzwa kwakanyanya, asi kugadzirwa kwefiber yekabhoni kunosanganisira mamwe matanho akaomarara (semuenzaniso, polymerization, oxidation stabilization, carbonization), zvichikwidza mitengo.

Kudzokorodza uye Kurasa: Kabhoni fiber inonetsa kudzokorodza uye inokonzera njodzi dzezvakatipoteredza kana ikasabatwa zvakanaka, zvichikonzera mitengo yakakwira yekurasa. Kusiyana neizvi, girazi fiber rinokwanisa kudzokororwa uye rinodzivirira nharaunda mumamiriro ezvinhu ekupedzisira ehupenyu.