Ingabe ipulasitiki i-conductor noma i-insulator?Okokuqala, ake siqonde umehluko phakathi kwalokhu okubili: Ikhondaktara yinto enokumelana okuncane futhi eqhuba ugesi kalula.I-insulator yinto engawuhambisi ugesi ngaphansi kwezimo ezijwayelekile.Izici ze-insulators ukuthi amacala amahle namabi kuma-molecule aboshwe ngokuqinile, futhi kunezinhlayiya ezimbalwa ezikhokhiswayo ezingahamba ngokukhululeka, futhi ukumelana kwazo kukhulu.Uma isivikelo sikhanyiswe ngokukhanya okunamandla amakhulu kunegebe lebhendi, ama-electron ebhendi ye-valence ajabulela ibhendi yokuqhuba, eshiya izimbobo ebhendini ye-valence, yomibili engahambisa ugesi, into eyaziwa ngokuthi i-photoconductivity.Ama-insulators amaningi anezakhiwo ze-polarization, ngakho-ke ama-insulators ngezinye izikhathi abizwa ngokuthi ama-dielectrics.Ama-insulators afaka ama-voltage ajwayelekile.Lapho i-voltage ikhuphuka ifinyelela emkhawulweni othile, ukuwohloka kwe-dielectric kuzokwenzeka futhi isimo sokuvikela sizobhujiswa.
Ipulasitiki ingahlukaniswa ngezigaba ezimbili: i-thermosetting ne-thermoplastic.Eyangaphambili ayikwazi ukubunjwa kabusha ukuze isetshenziswe, futhi lokhu okulandelayo kungaphinda kukhiqizwe.I-Thermoplasticity inobude obukhulu bomzimba, ngokuvamile obungu-50% kuya ku-500%.Amandla awahlukani ngokuphelele ngokomugqa kumabude ahlukene.
Ingxenye eyinhloko yepulasitiki yi-resin.I-resin ibhekisela kwinhlanganisela ye-polymer engazange ihlanganiswe nezithasiselo ezihlukahlukene.Igama elithi resin ekuqaleni laliqanjwe ngama-lipids akhiqizwa izilwane nezitshalo, njenge-rosin ne-shellac.
Amapulastiki angama-insulators, kodwa kunezinhlobo eziningi zepulasitiki.Izakhiwo zikagesi zamapulasitiki ahlukahlukene zihlukile, futhi amandla e-dielectric nawo ahlukile.
Isikhathi sokuthumela: Jul-30-2022