アラミッド複合フィルムにおける熱伝導の強化 内部界面相互作用とシネジスティック・オリエンテーションによる
Congcong Luo1,2, Han Wang3, Hengheng Zhu1
1School of Materials and Chemical Engineering, Xuzhou University of Technology, Xuzhou, Jiangsu 221018, China.
ACS applied materials & interfaces
|September 4, 2025
まとめ
この研究では,ポリマー複合材料の熱伝導性を高めるために,カルボキシル改変された炭素ナノチューブをアラミッドに導入します. この戦略は,インタフェースの相互作用と材料の方向性を強化することによって,高電力電子機器の熱散度を改善します.
科学分野:
- 材料科学
- ナノテクノロジー
- ポリマー複合材料
背景:
- 高電力チップの散熱には,高熱伝導性を持つ高度なポリマーベースの熱インターフェース材料 (TIM) が必要です.
- インターフェイスの熱抵抗 (ITR) は,現在のTIMの性能改善を大幅に制限します.
研究 の 目的:
- ポリマーベースのTIMの熱伝送性能を高めるため
- インターフェイスの相互作用と材料の方向性を改善することによって,インターフェイスの熱抵抗を軽減します.
主な方法:
- カーボキシル改変された多壁カーボンナノチューブ (CNTs-COOH) をブレードコーティングを用いてアラミッドマトリックスに組み込む.
- 固有界面相互作用 (水素結合,π-π相互作用) とCNTs-COOHの相乗的方向性を利用する.
- CNTs-COOH/アラミドおよび関連複合物のフォノン伝達スペクトルの理論的シミュレーションとITR
主要な成果:
- 40重%のCNTs-COOHを含むアラミッド複合物の平面内熱伝導度 (λ) は12.6W/mKに達し,純粋なアラミッドよりも420%増加した.
- 熱伝導性の優れた安定性が示され,温度におけるαの変動範囲は0. 8mm2/s以内であった.
- シミュレーションにより,熱伝送の強化における強力なインターフェイス相互作用の有効性が確認されました.
結論:
- 固有のインターフェイスの相互作用とシネジスティック・オリエンテーションの戦略は,ポリマー複合材料の熱伝搬を効果的に強化します.
- 開発されたアラミッド複合物は,高電力電子機器の散熱のためのTIMとして有意な可能性を示しています.
- このアプローチは,TIMの開発を進めるための実用的な方法を提供します.
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