Mawu Oyamba
Mu positi iyi yabulogu, tikambirana njira zogwirira ntchito komanso njira zabwino zopewera PCB delamination, potero kuteteza zida zanu zamagetsi kuti zisawonongeke.
Delamination ndivuto lalikulu lomwe nthawi zambiri limavutitsa ma board osindikizira okhazikika (PCBs) panthawi yautumiki wawo. Chodabwitsa ichi chikutanthauza kulekanitsidwa kwa zigawo mu PCB, zomwe zimapangitsa kuti kugwirizana kofooka ndi kulephera kwa gawo. Monga wopanga kapena wopanga, ndikofunikira kumvetsetsa zomwe zimayambitsa delamination ndikuchita zodzitetezera kuti zitsimikizire kukhazikika kwanthawi yayitali komanso kudalirika kwa PCB yanu.
I. Kumvetsetsa delamination mu okhwima-flex PCB
Delamination imayamba chifukwa cha zinthu zosiyanasiyana panthawi yopanga, kusonkhanitsa, ndi kusamalira magawo a PCB okhwima. Kupsyinjika kwamafuta, kuyamwa kwa chinyezi ndi kusankha zinthu mosayenera ndizo zomwe zimayambitsa delamination. Kuzindikira ndi kumvetsetsa zomwe zimayambitsa izi ndizofunikira kuti pakhale njira zopewera zopewera.
1. Kupsyinjika kwa kutentha: Coefficient of thermal expansion (CTE) kusagwirizana pakati pa zipangizo zosiyanasiyana kungayambitse kupsinjika kwakukulu panthawi yoyendetsa njinga yamoto, zomwe zimayambitsa delamination.Pamene PCB ikukumana ndi kusintha kwa kutentha, zigawozo zimakula ndikugwirizanitsa pamitengo yosiyana, zomwe zimapangitsa kuti zikhale zovuta pakati pawo.
2. Mayamwidwe a chinyontho: PCB yokhazikika yokhazikika nthawi zambiri imayang'aniridwa ndi chinyezi chambiri ndipo imatenga chinyezi mosavuta.Mamolekyu amadzi amatha kulowa pamwamba pa bolodi kudzera pa ma microcracks, ma voids, kapena malo osamata bwino, zomwe zimapangitsa kukula, kutupa, ndipo pamapeto pake delamination.
3. Kusankha Zinthu: Kuganizira mozama za zinthu zakuthupi n'kofunika kwambiri kuti tipewe delamination.Ndikofunikira kusankha laminate yoyenera, zomatira ndi chithandizo chapamwamba kuti mupereke chinyezi chochepa komanso kukhazikika kwamafuta.
2. Njira zopewera delamination
Tsopano popeza tamvetsetsa chifukwa chake, tiyeni tiwone njira zofunika zopewera kukhazikika kwa PCB:
1. Malingaliro oyenerera pamapangidwe:
a) Chepetsa makulidwe amkuwa:Kuchuluka kwa mkuwa kumapangitsa kuti pakhale kupsinjika kwakukulu panthawi yanjinga yotentha. Choncho, ntchito osachepera chofunika mkuwa makulidwe kumawonjezera PCB kusinthasintha ndi kuchepetsa chiopsezo delamination.
b) Zosanjikiza zosanjikiza:Yesetsani kugawa zigawo zamkuwa zofananira mkati mwa magawo olimba komanso osinthika a PCB. Kulinganiza koyenera kumathandizira kukulitsa kukula kwamafuta ndi kutsika, kuchepetsa kuthekera kwa delamination.
c) Kulekerera Kolamulidwa:Khazikitsani kulolerana kolamuliridwa pa kukula kwa dzenje, kudzera m'mimba mwake ndi m'lifupi mwake kuti muwonetsetse kuti kupsinjika pakusintha kwamafuta kumagawidwa mofanana mu PCB.
d) Fillets ndi minofu:Ma fillet amachepetsa kupsinjika, amathandizira kuti pakhale mapindika opindika komanso kuchepetsa kuthekera kwa delamination.
2. Kusankha zinthu:
a) High Tg Laminates:Sankhani ma laminate okhala ndi kutentha kwa magalasi apamwamba (Tg) popeza amapereka kukana kutentha kwabwino, kuchepetsa kusagwirizana kwa CTE pakati pa zida, ndikuchepetsa njira zowotcha njinga zamoto zowopsa.
b) Zida zotsika za CTE:Sankhani zida zomwe zili ndi CTE yotsika kuti muchepetse kusagwirizana kwakukula kwamafuta pakati pa zigawo zosiyanasiyana, potero muchepetse kupsinjika ndikuwongolera kudalirika kwathunthu kwa ma PCB okhazikika.
c) Zida zoteteza chinyezi:Sankhani zinthu zokhala ndi chinyezi chochepa kuti muchepetse chiopsezo cha delamination chifukwa cha kuyamwa kwa chinyezi. Ganizirani kugwiritsa ntchito zokutira zapadera kapena zosindikizira kuti muteteze madera osatetezeka a PCB ku kulowerera kwa chinyezi.
3. Zochita Zamphamvu Zopanga:
a) Kulepheretsa Kuwongolera:Khazikitsani njira zoyendetsera zowongolera kuti muchepetse kupsinjika kwa PCB panthawi yogwira ntchito, potero kuchepetsa chiwopsezo cha delamination.
b) Kusunga ndi Kusamalira Moyenera:Sungani ndikugwirani ma PCB pamalo olamulidwa ndi chinyezi chowongolera kuti mupewe kuyamwa kwa chinyezi ndi zovuta zokhudzana ndi delamination.
c) Kuyesa ndi Kuyang'anira:Njira zoyesera komanso zowunikira zimachitidwa kuti azindikire zolakwika zilizonse zopanga zomwe zingayambitse delamination. Kukhazikitsa njira zoyesera zosawonongeka monga kuyendetsa njinga yamoto, microsectioning, ndi scanning acoustic microscopy zitha kuthandiza kuzindikira zobisika zobisika.
Mapeto
Kupewa delamination ya okhwima-flex PCBs n'kofunika kuonetsetsa moyo wautali ndi ntchito yodalirika. Mutha kuchepetsa chiwopsezo cha delamination pomvetsetsa zomwe zimayambitsa ndikutenga njira zoyenera pakupangira, kusankha zinthu, komanso kupanga.Kugwiritsa ntchito kasamalidwe koyenera ka matenthedwe, kugwiritsa ntchito zinthu zokhala ndi zinthu zabwino, kugwiritsa ntchito njira zopangira zolimba, komanso kuyesa mozama kumatha kupititsa patsogolo kudalirika komanso kudalirika kwa ma PCB okhazikika. Potsatira njirazi ndikukhalabe ndi zochitika zaposachedwa kwambiri pazachuma ndi matekinoloje opangira, mutha kuwonetsetsa kuti ma PCB olimba komanso odalirika akukula bwino omwe amathandizira kukhazikika ndi kukhulupirika kwa zida zanu zamagetsi.
Nthawi yotumiza: Sep-20-2023
Kubwerera
