材料科学
热导率
石墨
复合材料
复合数
纳米纤维
小型化
纳米技术
纳米复合材料
碳纳米管
电子设备和系统的热管理
芳纶
机械工程
纤维
工程类
作者
Junwen Xie,Gang Zhou,Yuxuan Sun,Fei Zhang,Feiyu Kang,Baohua Li,Yijiang Zhao,Yinhang Zhang,Wei Feng,Qingbin Zheng
出处
期刊:Small
[Wiley]
日期:2023-12-04
被引量:1
标识
DOI:10.1002/smll.202305163
摘要
Miniaturization of modern micro-electronic devices urges the development of multi-functional thermal management materials. Traditional polymer composite-based thermal management materials are promising candidates, but they suffer from single functionality, high cost, and low fire-resistance. Herein, a multifunctional liquid metal (LM)-bridged graphite nanoplatelets (GNPs)/ aramid nanofibers (ANFs) film is fabricated via a facile vacuum-assisted self-assembly approach followed by compression. ANFs serve as interfacial binders to link LM and GNPs together via hydrogen bondings and π-π interactions, while LM bridges the adjacent layer of GNPs to endow a fast thermal transport by phonons and electrons. The resultant composite films exhibit a high bidirectional thermal conductivity (In-plane: 29.5 W m-1 K-1 and through-plane: 5.3 W m-1 K-1 ), offering a reliable and effective cooling. Moreover, the as-fabricated composite films exhibit superior flame-retardance (peak of heat release rate of 4000J g-1 ), outstanding Joule heating performance (200 °C at supplied voltage of 3.5 V), and excellent electromagnetic interference shielding effectiveness (EMI SE of 62 dB). This work provides an efficient avenue to fabricate multifuntional thermal management materials for micro-electronic devices, battery thermal management, and artificial intelligence.
科研通智能强力驱动
Strongly Powered by AbleSci AI