铜皮起泡案例分析
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摘要
某款CCL刷膜后发现板边铜皮出现起泡。通过外观检查,金相切片分析,SEM&EDS观察等一系列分析,推断出铜面起泡的原因在于,PP流胶的表面较光滑且缺少树脂,固化后PP与Cu面间的结合力不足,从而在机械摩擦中出现起泡。
引文
[1]CHEN Run-fa.Delamination of printed circuit boards[J].Printed Circuit Information,2008,4:31-69.(in Chinese)
    [2]HE Xiao.Case analysis for abnormity of blister on hole edge of PCB[C]//International PCB technology&information forum,2013,242-245.(in Chinese)
    [3]I.Baylakooglu,E.Hedin.PCB delamination[M].The ELEFNET Book on Failure Mechanisms,Testing Methods,and Quality Issues of Lead-Free Solder Interconnects,2011.
    [4]E.J.Floeter.Rework and repair of printed wiring assemblies[J].Circuit World,1990,4(16):26-31.
    [5]Yuanming Chen,et al.Failure mechanism of solder bubbles in PCB vias during high-temperature assembly[J].Circuit World,2013:133–138.

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