Issue 14, 2020

An anisotropic layer-by-layer carbon nanotube/boron nitride/rubber composite and its application in electromagnetic shielding

Abstract

Multifunctional polymer composites with anisotropic properties are attracting interest as they fulfil the growing demand of multitasking materials. In this work, anisotropic polymer composites have been fabricated by combining the layer-by-layer (LBL) filtration method with the alternative assembling of carbon nanotubes (CNTs) and hexagonal boron nitride flakes (hBN) on natural rubber latex particles (NR). The layered composites exhibit anisotropic thermal and electrical conductivities, which are tailored through the layer formulations. The best composite consists of four layers of NR modified with 8 phr (parts per Hundred Rubber) CNTs (∼7.4 wt%) and four alternate layers with 12 phr hBN (∼10.7 wt%). The composites exhibit an electromagnetic interference (EMI) shielding effectiveness of 22.41 ± 0.14 dB mm−1 at 10.3 GHz and a thermal conductivity equal to 0.25 W m−1 K−1. Furthermore, when the layered composite is used as an electrical thermal heater the surface reaches a stable temperature of ∼103 °C in approx. 2 min, with an input bias of 2.5 V.

Graphical abstract: An anisotropic layer-by-layer carbon nanotube/boron nitride/rubber composite and its application in electromagnetic shielding

Supplementary files

Article information

Article type
Paper
Submitted
18 Dec 2019
Accepted
15 Mar 2020
First published
16 Mar 2020
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2020,12, 7782-7791

An anisotropic layer-by-layer carbon nanotube/boron nitride/rubber composite and its application in electromagnetic shielding

Y. Zhan, E. Lago, C. Santillo, A. E. Del Río Castillo, S. Hao, G. G. Buonocore, Z. Chen, H. Xia, M. Lavorgna and F. Bonaccorso, Nanoscale, 2020, 12, 7782 DOI: 10.1039/C9NR10672C

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