Anisotropically enhancing thermal conductivity of epoxy composite with a low filler load by an AlN/C fiber skeleton. Issue 12 (15th June 2022)

• Record Type: Journal Article
• Authors: Chen, Zihe; Zhao, Chengzhi; Meng, Weijia; Sheng, Nan; Zhu, Chunyu; Rao, Zhonghao
• Is Part Of: Ceramics international. Volume 48:Issue 12(2022)
• Page Start: 17604
• Page End: 17610
• Publication Date: 2022-06-15
• Subjects: Thermal interface materials -- Thermal management -- Biomass cotton template -- Heat transfer enhancement; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2022.03.030
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Constructing a three-dimensional (3D) heat conduction skeleton has been considered as an effective method to efficiently enhance the thermal conductivity of polymer-based composites at a low filler load. Herein, a 3D thermal transport skeleton based on AlN/C was fabricated via the direct pyrolysis and carbothermic reduction reaction of vertically arranged biomass cotton fiber template, which was absorbed with aluminum resource. Thermal conductivity of the AlN/C-loaded epoxy composites with anisotropic thermal conductivity was greatly increased at a low filler load. The composite shows a high thermal conductivity of 0.49 W m -1 K -1 along the axial direction at a filler load of 12.4 wt%, which is 3.27 times of the pure epoxy resin, and also boasts a thermal conductivity of 0.33 W m -1 K -1 along the lateral direction. This work provides a new idea for developing high-efficient thermal management with anisotropic design.