Umklamo Nokuhlanganiswa Kwe-PCB Evame Kakhulu: Izinto Ezibalulekile
Amabhodi wesekethe aphrintiwe ngemvamisa ephezulu(ama-PCB) ayizingxenye ezibalulekile ezinhlobonhlobo zezinhlelo zokusebenza, okuhlanganisa ezokuxhumana, izinhlelo ze-radar, ukuxhumana okungenantambo, kanye nokucutshungulwa kwedatha okusheshayo. Ukusebenza kwala ma-PCB kuthonywa kakhulu yizinto ezikhethiwe zokuklama nokuhlanganisa kwawo. Lesi sihloko sihlola izinto eziyinhloko ezisetshenziswa ku ukwakheka kanye nokuhlanganiswa kwe-PCB okuvama kakhulu, kugcizelela izici zabo kanye nezinzuzo zabo.
- Izinto EziyisisekeloIzinto eziyisisekelo zakha isisekelo se-PCB evamise ukuvama kakhulu futhi zidlala indima ebalulekile ekunqumeni izakhiwo zayo zikagesi. Ezinye zezinto eziyisisekelo ezihamba phambili ezisetshenziswa kuma-PCB avamise ukuvama kakhulu zifaka:
- FR-4: I-epoxy resin fiberglass composite engabizi futhi esetshenziswa kabanzi, i-FR-4 inikeza imishini emihle futhi ehlelekileukuzinza kokushisa.Kodwa-ke,okungaguquki kwe-dielectric(Dk) kanyeisici sokushabalalisa(Df) kungenzeka ingabi ngcono kakhulu ezinhlelweni zokusebenza ezivame kakhulu.
- Izinto zikaRogers: I-Rogers idume ngezinto zayo ze-dielectric ezisebenza kahle kakhulu, njenge-RT/Duroid. Lezi zinto zinenani elivelele le-dielectric constant (Dk) kanye ne-dissipation factor (Df), okwenza zifaneleke kahle izinhlelo zokusebenza ze-PCB ezivame kakhulu.
- Izinto zeTaconic: I-Taconic inikeza izinto ezahlukahlukene ze-dielectric ezisebenza kahle kakhulu, njenge-PEEK (i-Polyether Ether Ketone) kanye ne-polyimide, enikeza ukuzinza okuhle kakhulu kokushisa kanye namanani aphansi e-Df, okwenza zifaneleke kahle kumasekethe anemvamisa ephezulu.
- Izinto Zokuqhuba: Ukukhethwa kwezinto eziqhuba ugesi kubalulekile ekwakhiweni kwe-PCB enemvamisa ephezulu njengoba kunquma ukuhanjiswa kogesi kwesekethe, ukumelana, kanye nobuqotho besignali. Ezinye izinto eziqhuba ugesi ezisetshenziswa kakhulu kuma-PCB anemvamisa ephezulu zifaka:
- Ithusi: Ithusi liyinto esetshenziswa kakhulu ekuqhubeni ugesi ngenxa yokuguquguquka kwalo okumangalisayo kanyeukusebenza kahle kwezindlekoKodwa-ke, ukumelana kwayo kuyanda ngokuvama, ngakho-ke izendlalelo zethusi ezincane zingasetshenziswa ekusetshenzisweni kwemvamisa ephezulu.
- Igolide: Igolide liyaziwa ngokusebenza kwalo okuvelele kanye nokumelana okuphansi, okwenza lifaneleke kahle kuma-PCB anemvamisa ephezulu. Liphinde linikeze okuhleukumelana nokugqwalanokuqina. Kodwa-ke, igolide libiza kakhulu kunethusi, okunciphisa ukusetshenziswa kwalo izinhlelo zokusebenza ezithinta izindleko.
- I-Aluminium: I-Aluminium ayiyona into engavamile kuma-PCB avame kakhulu kodwa ingasetshenziswa ezinhlotsheni ezithile lapho isisindo nezindleko kuyizinto eziyinhloko ezikhathazayo. Ukuqhuba kwayo kuphansi kunethusi negolide, okungase kudingeke ukuthi kucatshangelwe okwengeziwe ekwakhiweni.
- Izinto Zokusebenza NgogesiIzinto ze-dielectric zibalulekile ekufakeni umswakama emigqeni yokudonsa amandla ku-PCB futhi zibalulekile ekunqumeni izakhiwo zikagesi ze-PCB. Ezinye zezinto ze-dielectric eziphezulu ezisetshenziswa kuma-PCB asebenzisa imvamisa ephezulu zifaka:
- Umoya: Umoya uyinto evame kakhulu ye-dielectric futhi unikeza ukusebenza okuhle kakhulu kukagesi kumaza aphezulu. Kodwa-ke, ukuzinza kwawo kokushisa kulinganiselwe, futhi kungenzeka kungafaneleki ukusetshenziswa kwezinga lokushisa eliphezulu.
- I-Polyimide: I-Polyimide iyi-izinto ze-dielectric ezisebenza kahle kakhulu Idume ngokuqina kwayo okumangalisayo kokushisa kanye namanani aphansi e-Df. Ivame ukusetshenziswa kuma-PCB asebenzisa imvamisa ephezulu adinga ukumelana namazinga okushisa aphezulu.
- I-Epoxy: Izinto ze-dielectric ezisekelwe ku-epoxy zinikeza ukuzinza okuhle komshini nokushisa. Zivame ukusetshenziswa ezintweni eziyisisekelo ze-FR-4 futhi zinikeza ukusebenza okuhle kukagesi kuze kufike ku-frequency ethile.
Ukukhethwa kwezinto zokwakha nokuhlanganisa i-PCB enemvamisa ephezulu kubalulekile ekufezeni ukusebenza okuhle kakhulu. Izinto eziyisisekelo, izinto eziqhubayo, nezinto ezisebenzisa ugesi konke kudlala indima ebalulekile ekunqumeni izakhiwo zikagesi ze-PCB, ubuqotho besignali, kanye nokuthembeka. Abaklami kumele bakhethe ngokucophelela lezi zinto ngokusekelwe ezidingweni ezithile zohlelo lokusebenza ukuqinisekisa ukusebenza kahle nokusebenza kahle. Njengoba ubuchwepheshe buqhubeka nokuthuthuka, izinto ezintsha kanye nokuthuthukiswa kwezinto ezikhona kuzoqhubeka nokuvela, okwandisa kakhulu amakhono ama-PCB anemvamisa ephezulu.
