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Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites

Wave-absorbing materials are developing in the direction of “light weight, wide frequency band, thin layer and high strength”, and it is difficult to achieve the synergy between wave-absorbing performance and mechanical properties when graphene absorbent is compounded with a single resin matrix. In...

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Detalles Bibliográficos
Autores principales: Yang, Zenghui, Wu, Haihua, Zhang, Renjing, Deng, Kaixin, Li, Yan, Liu, Zhi, Zhong, Qiang, Kang, Yi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9268992/
https://www.ncbi.nlm.nih.gov/pubmed/35808583
http://dx.doi.org/10.3390/polym14132538
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author Yang, Zenghui
Wu, Haihua
Zhang, Renjing
Deng, Kaixin
Li, Yan
Liu, Zhi
Zhong, Qiang
Kang, Yi
author_facet Yang, Zenghui
Wu, Haihua
Zhang, Renjing
Deng, Kaixin
Li, Yan
Liu, Zhi
Zhong, Qiang
Kang, Yi
author_sort Yang, Zenghui
collection PubMed
description Wave-absorbing materials are developing in the direction of “light weight, wide frequency band, thin layer and high strength”, and it is difficult to achieve the synergy between wave-absorbing performance and mechanical properties when graphene absorbent is compounded with a single resin matrix. In this paper, based on the preparation of a new composite absorbing wire with a graphene (GR)/spherical graphite (SG) double absorbent and polylactic acid (PLA)/thermoplastic polyurethane (TPU) double matrix, we proposed a new method to prepare samples for testing the electromagnetic parameters and tensile strength by fused deposition modeling (FDM). Furthermore, the effect of SG/GR ratio on the microwave absorbing properties and mechanical properties of PLA/TPU composites was specifically studied. It was found that when the ratio of SG/GR was small (0:5, 1:4), the dielectric loss (interfacial polarization loss, dipole polarization loss, conductivity loss) and attenuation ability of the composites were stronger, and the impedance matching was better. When the SG/GR ratio was large (5:0, 4:1), the composites had high strength and toughness. When the ratio of SG/GR was moderate (2:3, 3:2), it could retain the absorbing and mechanical properties of the absorbing materials. On the one hand, the SG and PLA/TPU matrix formed an “island structure”, which improves the dispersion of GR; on the other hand, the GR and PLA/TPU matrix formed a “core-shell structure”, which promotes polarization and multiple scattering.
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spelling pubmed-92689922022-07-09 Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites Yang, Zenghui Wu, Haihua Zhang, Renjing Deng, Kaixin Li, Yan Liu, Zhi Zhong, Qiang Kang, Yi Polymers (Basel) Article Wave-absorbing materials are developing in the direction of “light weight, wide frequency band, thin layer and high strength”, and it is difficult to achieve the synergy between wave-absorbing performance and mechanical properties when graphene absorbent is compounded with a single resin matrix. In this paper, based on the preparation of a new composite absorbing wire with a graphene (GR)/spherical graphite (SG) double absorbent and polylactic acid (PLA)/thermoplastic polyurethane (TPU) double matrix, we proposed a new method to prepare samples for testing the electromagnetic parameters and tensile strength by fused deposition modeling (FDM). Furthermore, the effect of SG/GR ratio on the microwave absorbing properties and mechanical properties of PLA/TPU composites was specifically studied. It was found that when the ratio of SG/GR was small (0:5, 1:4), the dielectric loss (interfacial polarization loss, dipole polarization loss, conductivity loss) and attenuation ability of the composites were stronger, and the impedance matching was better. When the SG/GR ratio was large (5:0, 4:1), the composites had high strength and toughness. When the ratio of SG/GR was moderate (2:3, 3:2), it could retain the absorbing and mechanical properties of the absorbing materials. On the one hand, the SG and PLA/TPU matrix formed an “island structure”, which improves the dispersion of GR; on the other hand, the GR and PLA/TPU matrix formed a “core-shell structure”, which promotes polarization and multiple scattering. MDPI 2022-06-22 /pmc/articles/PMC9268992/ /pubmed/35808583 http://dx.doi.org/10.3390/polym14132538 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Yang, Zenghui
Wu, Haihua
Zhang, Renjing
Deng, Kaixin
Li, Yan
Liu, Zhi
Zhong, Qiang
Kang, Yi
Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title_full Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title_fullStr Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title_full_unstemmed Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title_short Effect of Graphene/Spherical Graphite Ratio on the Properties of PLA/TPU Composites
title_sort effect of graphene/spherical graphite ratio on the properties of pla/tpu composites
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9268992/
https://www.ncbi.nlm.nih.gov/pubmed/35808583
http://dx.doi.org/10.3390/polym14132538
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