Elucidation of the heat conduction mechanism of polymer composites by measurement of the temperature field and analysis of the heat transfer in the mesostructure

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K04181
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 18010:Mechanics of materials and materials-related
• Research Institution: Toyama Prefectural University
• Principal Investigator: Sanada Kazuaki 富山県立大学, 工学部, 教授 (20363872)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 熱伝導率測定 / 有限要素解析 / サーモグラフィー / ポリマー系複合材料 / 熱伝導性フィラー / 熱伝導率 / メゾ構造

Outline of Final Research Achievements

In order to elucidate the heat conduction mechanism of polymer composites in terms of the relationship between heat flow and mesostructure, we measured the temperature field using thermographic microscopy, measured the thermal conductivity using the steady-state method, and performed finite element analysis on the thermal conductivity measurement considering the mesostructure. The results of the temperature field measurement showed that the temperature field changed significantly depending on the type of filler and its state of existence. The results of finite element analysis showed that the results considering the laser flash method were higher than those considering the steady state method. The change in analytical results with increasing filler volume fraction showed a similar trend to the thermal conductivity measurement results. Furthermore, the difference between the analytical and experimental results became smaller when the effect of filler contact was taken into account.

Free Research Field

複合材料工学

Academic Significance and Societal Importance of the Research Achievements

電子機器の高性能化に伴い放熱対策が重要な技術課題となり、放熱材料として活用されるポリマー系複合材料の高熱伝導化技術の研究開発が活発に進められている。本研究で得られた成果は、高熱伝導化に有効な複合材料のメゾ構造に関する知見と、不均質性を考慮した複合材料の熱伝導率の高精度な測定方法確立に寄与する知見であり、複合材料工学分野における学術的意義は大きく、高性能な電子機器開発に大きく寄与するものである。