具有定向可控热路径的块状联苯环氧复合材料的导热性和闭环回收,Journal of Materials Chemistry A

当前位置： X-MOL 学术 › J. Mater. Chem. A › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

具有定向可控热路径的块状联苯环氧复合材料的导热性和闭环回收
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2023-06-20 , DOI: 10.1039/d3ta02852f
Fubin Luo ₁ , Wenqi Cui _{1,

2} , Yingbing Zou _{1,

2} , Hongzhou Li _{1,

2} , Qingrong Qian ₂

Affiliation

热管理材料需求的不断增长消耗了大量的石化和无机矿产资源。开发一种可实现闭环回收的高导热复合材料至关重要。本研究基于填充氮化硼（BN）和液态金属（LM）的共价适应性网络（CAN），制备了具有方向可控导热率的可回收联苯环氧复合材料（LEP/BN/LM）。采用重复压延技术获得了制备薄膜复合材料中诱导的双取向液态金属和氮化硼。块体复合材料是通过薄膜堆叠方法制造的，依靠自修复通孔每层之间的酯交换作用。通过改变堆叠方式，可以在所需方向上获得高导热率，从而实现方向可控的高导热率。结果表明， LEP复合材料的主方向可实现5.41 W m ^-1 K ^-1的高导热率。实验表明所制备的复合材料具有优异的热管理能力。它还证实填料和有机化合物可以通过温和的化学路线完全分离，并可以进一步重复使用。

"点击查看英文标题和摘要"

Thermal conductivity and closed-loop recycling of bulk biphenyl epoxy composites with directional controllable thermal pathways

The increasing demand of thermal management materials consumes a large amount of petrochemical and inorganic mineral resources. It is essential to develop a kind of highly thermally conductive composite with realizable closed-loop recycling. Based on the covalent adaptable networks (CANs), which are filled with boron nitride (BN) and liquid metal (LM), recyclable biphenyl epoxy composites (LEP/BN/LM) with directional controllable thermal conductivity have been prepared in this study. The induced dual-aligned liquid metal and boron nitride in the preparative film composites is obtained using repeated pressing-rolling technique. The bulk composites are fabricated by film-stacking method, relying on self-healing via interesterification between each layer. By altering the stacking mode, high thermal conductivity can be obtained in the desired direction, which realizes the directional controllable high thermal conductivity. The result shows that a high thermal conductivity of 5.41 W m⁻¹ K⁻¹ can be achieved in the predominant direction of the LEP composite. The experiment indicates that the prepared composites have excellent thermal management ability. It also confirms that the filler and the organic compounds can be completely separated by mild chemical routes, which can be reused further.

更新日期：2023-06-20

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南