Filimka dahaarka Polyimide ee loogu talagalay bay'ada daran

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Filimka dahaarka ee Polyimide - Xalka Dahaarka Waxqabadka Sare ee ugu dambeeya

Maaddaama maaddada dahaarka filimka heer caalami ah, filimkeena polyimide (PI) ee dahaarka ah waxaa lagu farsameeyay iyada oo loo marayo polycondensation of pyromellitic dianhydride (PMDA) iyo 4,4'-oxydianiline (ODA) ee dareeraha adag ee polar, oo ay ku xigto tuurista iyo cabsigelinta, hubinta tayada gaarka ah iyo xasilloonida inta lagu jiro habka wax soo saarka. Loo yaqaan "filimka dahabiga ah" ee is dhexgalka aadka u wanaagsan ee korantada, kulaylka, farsamada, iyo guryaha kiimikaad, Filimka Polyimide Insulation Film ee Degaanada Xad dhaafka ah waa shay lagama maarmaanka u ah beeraha farsamada sare.

Filimkeena dahaarka ee PI wuxuu muujinayaa iska caabin heerkul aad u sarreeya, ilaalinta qaabdhismeed iyo qaabdhismeed shaqo oo dhan laga bilaabo -269 ° C (-452 ° F) ilaa 400 ° C (752 ° F), oo leh caabbinta kulaylka muddada gaaban ilaa 500 ° C, taas oo u oggolaanaysa inay si fudud ula qabsato heerkulka hooseeya iyo jawiga shaqada. Waxay bixisaa wax qabad koronto oo heer sare ah, oo leh awood dielectric ah 100-300 kV/mm, dielectric joogto ah oo ah 3.0-3.5 (lagu dhimay 2.5 ka dib fluorination), iyo caabbinta mugga ee 10¹⁵-10¹⁷ Ω·cm, si wax ku ool ah u go'doominta wareegyada iyo hawlgalka qalabka iyo ilaalinta xaaladaha sare ee badbaadada.