超临界CO2流体环境中线路板分层实验分析
Analysis of layered experiments on printed circuit board in the environment with supercritical CO2 fluid
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摘要: 在超临界CO2流体环境下,当温度达到240℃以上时,印刷线路板就会发生分层现象。同时,在实验中发现在非超临界流体环境下,当温度达到260℃以上时,线路板也会发生分层现象。从线路板粘接材料发生热解反应的角度出发,在对比超临界CO2流体环境下与非超临界流体环境下的线路板分层效果的基础上,对超临界CO2流体环境下的线路板分层做出合理分析,最后发现临界CO2流体对线路板分层过程有促进作用,并对其分层效果有优化作用。Abstract: The printed circuit board(PCB) takes delamination in supercritical CO2 fluid above 240℃. Meanwhile, experiments show that the PCB also takes delamination in nonsupercritical fluid above 260℃. Based on the comparison of PCB delamination effects in the situation of supercritical CO2 fluid and non-supercritical fluid, in view of PCB adhesive material thermal decomposition reaction, a reasonable analysis was made. The analysis indicates that the supercritical CO2 fluid can facilitate the process of the stratification of PCB and optimize the delamination effect of PCB.
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Key words:
- supercritical CO2 fluid /
- printed circuit board(PCB) /
- epoxy resins /
- pyrogenation
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