Thermal performance of electronic components based on phase change materials

doi:10.3969/j.issn.0438-1157.2014.z1.025

Abstract

Abstract: A comparison was made among the thermal manage performance of electronic components based on radiator with three different kinds of material filling state, without paraffin, pure paraffin, composite of graphite with paraffin. The surface temperature of electronic component substrate and radiator during input power changes were tested by experiment. The results indicated that paraffin and composite of graphite with paraffin can shorten the time for electronic components reaching steady state. Temperature change rates declined. While the power increased abruptly, temperature between radiators and chips rose smaller and smoother when filled with paraffin and composite of graphite with paraffin, resulting in effectively restrain the adverse effects of heat shock on electronic components. In cooling process, the surface temperature of radiator filled with paraffin, composite of graphite with paraffin changed smoother, which was beneficial to extending the service life of radiator.

Key words: radiator, electronic component, phase change material, heat shock, service life

摘要： 对比研究了无石蜡、纯石蜡以及石墨/石蜡复合材料三种不同填充状态的散热器在电子元件热管理中的性能，通过实验测量了功率变化时电子元件基板表面温度及散热器表面温度场的变化情况。研究结果表明添加石蜡、石墨/石蜡复合材料能缩短电子器件启动后温度场稳定的时间，温度变化速率有所下降；当功率突然增大时，填充石蜡、石墨/石蜡复合材料的散热器与芯片结合处温度升高值较小、变化较为平缓，可有效抑制热冲击对电子元件的影响。在散热过程中，填充了石蜡、石墨/石蜡的散热器表面温度变化更为平滑，有利于延长散热器的使用寿命。

关键词: 散热器, 电子元件, 相变材料, 热冲击, 使用寿命

CLC Number:

TQ21.3

LAI Yanhua, WU Tao, WEI Lulu, DONG Zhen, LÜ Mingxin. Thermal performance of electronic components based on phase change materials[J]. CIESC Journal, 2014, 65(S1): 157-161.

赖艳华, 吴涛, 魏露露, 董震, 吕明新. 基于相变材料的电子元件的散热性能[J]. 化工学报, 2014, 65(S1): 157-161.

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