接触热阻的实验研究+文献综述
毕业论文关键词 接触热阻 电子散热 热界面材料
Title The experiment and study of thermal contact resistance
Abstract
The rapid development of electronic products, the power of the electronic
devices is improving, how to cool the devices is becoming more and more
attention. The point of this paper is to study and experiment about thermal
interface materials, prepare for high performance thermal interface materials,
in order to reduce the thermal contact resistance between the surface and
meet the requirement of the electronic can work safely. In this article, the
high thermal conductivity of nano aluminum and graphene are doped into the
epoxy resin matrix as the filler, then the thermal interface materials is
prepared successfully. Using the NETZSCH company LFA447 to measure thermal
conductivity. The study found that: (1) The best composite is filled with 80%
nano aluminum which’s thermal conductivity is 1.743 W/m∙ K. (2) When the
filler as graphene is added to the matrix which is composite with 40% of nano
aluminum, thermal conductivity can reach 1.736 W/m∙ K.
Keywords thermal contact resistance, electronic cooling, thermal interface materials
目 次
1 引言 . 1
1.1 国内外研究现状 . 2
1.2 研究意义与研究内容 . 5
2 石墨烯性能介绍 . 6
2.1 电学性能 . 6
2.2 力学性能 . 6
2.3 热学性能 . 6
2.4 光学及其他性能 . 7
3 纳米铝粉/环氧树脂符合材料的制备与研究 8
3.1 实验部分 . 8
3.1.1 实验材料 . 8
3.1.2 主要实验设备 . 8
3.2 实验过程 12
3.3 性能测试 13
3.4 结果与分析 13
3.5 本章小结 14
4 石墨烯/纳米铝粉/环氧树脂复合材料的制备与研究 15
4.1 实验部分 15
4.1.1 实验材料 15
4.1.2 实验设备 15
4.2 实验过程 15
4.3 性能测试 17
4.4 结果与分析 17
4.5 本章小结 18
结论与展望 . 19
结论 19
展望 19
致 谢 . 20
参 考 文 献 21 1 引言
从微观角度分析，所有固体表面都是粗糙不平的[1]
。因为存在表面粗糙度的原因，接触表
面的实际接触通常是发生在这些微小的面积上，实际接触面积仅占接触面积很小的一部分，
其余部分为固体与空气的接触。由于接触表面的面积占比例的不确定性，进而导致接触界面
上一篇：基于微观结构的气凝胶热导率研究