Phindu lalikulu la organometallic film capacitors ndikuti amadzichiritsa okha, zomwe zimapangitsa kuti ma capacitor awa akhale amodzi mwa omwe akukula mwachangu masiku ano.

Pali njira ziwiri zosiyana zodzichiritsa zokha za metalized film capacitors: imodzi ndiyo kutulutsa kudzichiritsa;ina ndi electrochemical kudzichiritsa.Yoyamba imapezeka pamagetsi apamwamba, choncho imatchedwanso kuchiritsa kwamphamvu kwamagetsi;chifukwa chotsirizirachi chimapezekanso pamagetsi otsika kwambiri, nthawi zambiri amatchedwa otsika-voltage kudzichiritsa okha.

Kutulutsa Kudzichiritsa

Kufotokozera limagwirira kumaliseche kudzichiritsa kudziletsa, kuganiza kuti pali chilema mu organic filimu pakati awiri metallized maelekitirodi ndi kukana R. Malinga ndi chikhalidwe cha chilema, kungakhale zitsulo chilema, semiconductor kapena bwino. kuwonongeka kwa insulated.Mwachiwonekere, pamene chilemacho ndi chimodzi mwa zakale, capacitor idzakhala itadzitulutsa yokha pamagetsi otsika.Ndi potsirizira pake pamene otchedwa high voltage discharge amadzichiritsa okha.

Njira yodzichiritsa yokha ndiyoti mutangogwiritsa ntchito voliyumu V ku capacitor ya filimu yazitsulo, ohmic current I = V/R imadutsa pachilema.Choncho, kachulukidwe panopa J = V/Rπr2 umayenda mwa elekitirodi metallized, mwachitsanzo, kuyandikira dera chilema (r ang'onoang'ono ndi) ndi apamwamba kachulukidwe ake panopa ali mkati electrode metallized.Chifukwa cha kutentha kwa Joule komwe kumayambitsidwa ndi chilema chogwiritsa ntchito mphamvu W = (V2 / R) r, kukana R kwa semiconductor kapena insulating defect kumachepa kwambiri.Choncho, I panopa ndi kugwiritsa ntchito mphamvu W kumawonjezeka mofulumira, chifukwa chake, kachulukidwe kamakono J1 = J = V / πr12 ikukwera kwambiri m'dera limene electrode yazitsulo ili pafupi kwambiri ndi chilema, ndipo kutentha kwake kwa Joule kumatha kusungunula zitsulo. wosanjikiza m'derali, zomwe zimapangitsa kuti arc pakati pa maelekitirodi aziwulukira pano.Arc imasanduka nthunzi mwachangu ndikutaya chitsulo chosungunuka, ndikupanga malo odzipatula opanda chitsulo.Arc imazimitsidwa ndipo kudzichiritsa nokha kumatheka.

Chifukwa cha kutentha kwa Joule ndi arc zomwe zimapangidwira pakudzichiritsa nokha, dielectric kuzungulira chilema ndi malo odzipatula odzipatula a dielectric padziko lapansi amawonongeka ndi kuwonongeka kwamafuta ndi magetsi, motero kuwonongeka kwa mankhwala, gasification ndi carbonization, komanso ngakhale. kuwonongeka kwa makina kumachitika.

Kuchokera pamwambapa, kuti mukwaniritse kudzichiritsa nokha, ndikofunikira kuwonetsetsa kuti malo ozungulira azungulira chilemacho, ndiye kuti mapangidwe azitsulo zamtundu wa organic film capacitor ayenera kukonzedwa bwino kuti akwaniritse sing'anga yoyenera kuzungulira. chilema, makulidwe oyenera a zitsulo zosanjikiza, chilengedwe cha hermetic, ndi mphamvu yoyenera yapakati ndi mphamvu.Zomwe zimatchedwa kutulutsa kwangwiro kudzichiritsa nokha ndi: nthawi yodzichiritsa yokha ndi yochepa kwambiri, mphamvu yodzichiritsa yokha ndi yaying'ono, kudzipatula kwabwino kwambiri kwa zolakwika, palibe kuwonongeka kwa dielectric yozungulira.Kuti mukwaniritse kudzichiritsa bwino, mamolekyu a filimu ya organic ayenera kukhala ndi chiŵerengero chochepa cha carbon ndi maatomu a haidrojeni ndi mpweya wochepa wa okosijeni, kotero kuti kuwonongeka kwa mamolekyu a filimu kumapezeka pakudzichiritsa nokha, ayi. Mpweya umapangidwa ndipo palibe kuyika kwa kaboni komwe kumachitika pofuna kupewa kupangika kwa njira zatsopano zopangira, koma CO2, CO, CH4, C2H2 ndi mpweya wina amapangidwa kuti azimitse arc ndi kukwera kwambiri kwa gasi.
Pofuna kuonetsetsa kuti zofalitsa zozungulira zowonongeka sizikuwonongeka pamene kudzichiritsa, mphamvu zodzichiritsa siziyenera kukhala zazikulu kwambiri, komanso osati zazing'ono kwambiri, kuti muchotse zitsulo zosanjikizana kuzungulira chilema, kupanga mapangidwe otsekemera. (high resistance) zone, chilemacho chidzakhala chokha, kukwaniritsa kudzichiritsa.Mwachiwonekere, mphamvu yodzichiritsa yofunikira imagwirizana kwambiri ndi zitsulo zazitsulo zazitsulo, makulidwe, ndi chilengedwe.Choncho, pofuna kuchepetsa mphamvu yodzichiritsa nokha ndikupeza kudzichiritsa bwino, zitsulo zazitsulo zamtundu wa organic zomwe zimakhala ndi zitsulo zotsika kwambiri zimasungunuka. , malo odzipatula osungunula adzakhala ngati nthambi ndipo amalephera kupeza machiritso abwino.Ma capacitor a CRE onse amagwiritsa ntchito mafilimu okhazikika, ndipo nthawi yomweyo kasamalidwe kokhazikika koyang'anira zinthu zomwe zikubwera, kutsekereza mafilimu opanda pake pakhomo, kuti mtundu wa mafilimu a capacitor ukhale wotsimikizika.

Kuphatikiza pa kutulutsa kudzichiritsa, palinso ina, yomwe ndi electrochemical kudzichiritsa.Tiyeni tikambirane njira imeneyi m'nkhani yotsatira.