Boron nitride nanosheet@penetrating carbon nanotube boosted electromagnetic wave absorption and thermal conduction of polyvinyl alcohol composites

Xu Zhou, Yulong He, Qiang Wang, Xian Yi, Ke Li, Ruidi Liu, Limin Zhang

科研成果: 期刊稿件文章同行评审

2 引用 (Scopus)

摘要

The high integration and miniaturization of modern electronic equipment are limited by thermal radiation and electromagnetic pollution, posing new requirements for both thermal conduction and electromagnetic interference protection. This work fabricated the heterostructure boron nitride nanosheet@carbon nanotube composites (BNNS@CNTs) using a two-step method. The introduction of BNNS reduced the excessive electrical conductivity of CNTs, achieving effective impedance matching. Furthermore, the heterostructures coupling multiple electromagnetic loss mechanisms enhanced the ability to absorb electromagnetic waves. As a result, the composites demonstrated an effective absorption bandwidth (EAB) of 6.83 GHz and a minimum reflection loss (RLmin) of −52.67 dB. Additionally, the construction of an electron-phonon dual thermal conduction carrier and a multi-scale thermal network significantly improved the thermal conduction ability of the matrix. The BNNS@CNTs/PVA composite coating attained a thermal conductivity of 2.051 W/(m·K), which is 12.6 times greater than that of the pure matrix. The exceptional electromagnetic wave absorption and thermal conduction capabilities of these heterostructure composites exhibited great potential for application and were expected to applied for solving thermal management and electromagnetic interference problems of electronic devices.

源语言英语
文章编号178394
期刊Journal of Alloys and Compounds
1011
DOI
出版状态已出版 - 15 1月 2025

指纹

探究 'Boron nitride nanosheet@penetrating carbon nanotube boosted electromagnetic wave absorption and thermal conduction of polyvinyl alcohol composites' 的科研主题。它们共同构成独一无二的指纹。

引用此