Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector

Carbon?based composite materials have garnered widespread attention in the field of Personal Thermal Management (PTM). In these applications, constructing conductive fillers with a highly cross?linked network is key to achieving the rapid electrothermal conversion of materials. Herein, a novel carbon?based composite material was successfully developed using screen printing technology, with a waterborne polyurethane (WPU) matrix embedded with carbon nanotubes (CNTs) and calcein?modified graphene nanosheets (CAG). Due to the strong ??? conjugation interactions present in the highly cross?linked carbon?based network, the resulting CAG?CNTs/WPU composite forms a three?dimensional conductive network, which not only demonstrates a significant synergistic effect but also facilitates efficient transport of electrons and phonons. Experimental results show that the CAG?CNTs/WPU composite possesses excellent electrothermal conversion properties and an upper high thermal conductivity (3.10 W·m?1·K?1). At a low voltage of 5 V, the composite exhibited a rapid response, increasing to 50 °C in 20 s. This research not only highlights the importance of adopting environmentally friendly preparation methods but also emphasizes the synergistic role played by two?dimensional graphene nanosheets and one?dimensional carbon nanotubes in building an efficient three?dimensional electrothermal network, which has significant scientific and application value in advancing PTM applications.This article is protected by copyright. All rights reserved.

» Author: Yuanli Shen, Yu Xiang, Dhandapani Kuzhandaivel, Luyao Wang, Zixiang Weng, Longhui Zheng, Jianlei Wang, Qia Zhang, Lixin Wu

» Publication Date: 21/05/2024

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