Hongbin Chai, Jianfei Tie, Yi Zhong, Linping Zhang, Xueling Feng, Hong Xu, Zhiping Mao
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引用次数: 0
Abstract
CNF-PPy/MXene composite films with excellent electromagnetic interference (EMI) shielding and infrared thermal camouflage performance were fabricated by compounding cellulose nanofiber-polypyrrole (CNF-PPy) and MXene. CNF-PPy was prepared by the modified in-situ polymerization of pyrrole on the surfaces of CNFs and exhibited excellent dispersion stability and storage stability in aqueous phase. CNF-PPy films showed enhanced conductivity (~ 3.91 S/cm) and EMI shielding effectiveness (average ~ 28.1 dB in X-band). The composite films loaded with MXene exhibited even better EMI shielding performance (~ 45.8 dB on average in X-band) and good applicability in other bands (~ 44.7 dB in 26.5–40.0 GHz band). The sample CP3M3 presented excellent infrared thermal camouflage properties on the MXene side (45.0 °C at 100 °C) and exhibited different infrared thermal camouflage properties on the other side (84.4 °C at 100 °C on the CNF-PPy side). Given excellent electrical conductivity, dispersion and storage stability of CNF-PPy, enhanced electromagnetic shielding and adjustable infrared emissivity of CNF-PPy/MXene films, the resulting samples can be chosen according to the scenarios, providing a promising method to ensure the smooth operation of military equipment.
期刊介绍:
Cellulose is an international journal devoted to the dissemination of research and scientific and technological progress in the field of cellulose and related naturally occurring polymers. The journal is concerned with the pure and applied science of cellulose and related materials, and also with the development of relevant new technologies. This includes the chemistry, biochemistry, physics and materials science of cellulose and its sources, including wood and other biomass resources, and their derivatives. Coverage extends to the conversion of these polymers and resources into manufactured goods, such as pulp, paper, textiles, and manufactured as well natural fibers, and to the chemistry of materials used in their processing. Cellulose publishes review articles, research papers, and technical notes.