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Influence of Increased Voltage on the Characteristics of Printed Circuit Board Protective Coatings

机译:电压升高对印刷电路板保护涂层性能的影响

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The article presents a research focused on printed circuit board protective coatings as an option for the assembled PCBs cover and electronic device reliability improvement. The experiment with different coatings is described in this article. For the experiment, rigid substrate (FR-4) is used. The protective coatings from acrylic, urethane, silicone and fluoropolymer materials were used. The differences in substrates and coatings have an effect on the insulation resistance which was measured by SIR test. The samples were exposed to accelerated aging test by increased voltage. The advantages, disadvantages, comparison and results from measurement are discussed in this paper. The results present the comparison of the tested conformal coatings. The importance of cleaning before application of coatings is the next part of results.
机译:这篇文章提出了一项针对印刷电路板保护涂层的研究,该涂层是组装PCB盖板和提高电子设备可靠性的一种选择。本文介绍了使用不同涂层的实验。对于实验,使用刚性基板(FR-4)。使用了丙烯酸,聚氨酯,硅树脂和含氟聚合物材料制成的保护涂层。基材和涂层的差异会对绝缘电阻产生影响,这是通过SIR测试测得的。通过增加电压使样品经受加速老化测试。本文讨论了优缺点,比较结果和测量结果。结果提供了测试的保形涂料的比较。结果的下一部分是在涂覆涂料之前进行清洁的重要性。

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