Facile fabrication of lightweight porous FDM-Printed polyethylene/graphene nanocomposites with enhanced interfacial strength for electromagnetic interference shielding

Jing, Jingjing; Xiong, Yu; Shi, Shaohong; Pei, Haoran; Chen, Yinghong; Lambin, Philippe

doi:10.1016/j.compscitech.2021.108732

Cited by 71 publications

(41 citation statements)

References 57 publications

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“…The EMI SE of PI composite films and other materials based on graphite derivatives and magnetic substances is summarized in Fig. 4f [16,[47][48][49][50][51][52][53][54][55][56][57][58][59][60]. It can be seen that the PI composite films prepared in this work has a relatively high specific efficiency (the ratio of EMI SE to the effective thickness of the material, and the effective thickness of PI composite films for EMI shielding is about 85 μm), which is about 400 dB mm −1 .…”

Section: Go+eg Dispersion Go+egmentioning

confidence: 78%

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

et al. 2021

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The development of lightweight and integration for electronics requires flexible films with high thermal conductivity and electromagnetic interference (EMI) shielding to overcome heat accumulation and electromagnetic radiation pollution. Herein, the hierarchical design and assembly strategy was adopted to fabricate hierarchically multifunctional polyimide composite films, with graphene oxide/expanded graphite (GO/EG) as the top thermally conductive and EMI shielding layer, Fe3O4/polyimide (Fe3O4/PI) as the middle EMI shielding enhancement layer and electrospun PI fibers as the substrate layer for mechanical improvement. PI composite films with 61.0 wt% of GO/EG and 23.8 wt% of Fe3O4/PI exhibits high in-plane thermal conductivity coefficient (95.40 W (m K)−1), excellent EMI shielding effectiveness (34.0 dB), good tensile strength (93.6 MPa) and fast electric-heating response (5 s). The test in the central processing unit verifies PI composite films present broad application prospects in electronics fields.

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Section: Go+eg Dispersion Go+egmentioning

confidence: 78%

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

et al. 2021

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“…In the PE family, low density PE has a wide application in our daily life due to its low cost and good flexibility [1,2]. When carbon-based nanofillers are incorporated, PE composites with improved mechanical, electrical, and thermal properties can be produced [3,4]. These PE nanocomposites have potential for applications such as static charge dissipative materials, semiconductor layers, thermal management materials, and gas barrier materials [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy

et al. 2021

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The quantitative characterization of microstructure is most desirable for the establishment of structure-property relationships in polymer nanocomposites. In this work, the effects of graphene on the microstructure, mechanical, electrical, and thermal properties of the obtained graphene/polyethylene (PE) composites were investigated. In order to reveal the structure-performance relationship of graphene/PE composites, especially for the effects of the relative free volume fraction (fr) and interfacial interaction intensity (β), positron annihilation lifetime spectroscopy (PALS) was employed for its quantitative description. The relative free volume fraction fr gives a good explanation of the variation for surface resistivity, melting temperature, and thermal stability, and the variation of tensile strength and thermal conductivity agree well with the results of interfacial interaction intensity β. The results showed that fr and β have a significant effect on the properties of the obtained graphene/PE composites, and the effect on the properties was revealed.

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“…In general, MEG composite foam has an excellent conductive network compared to pure foam, and RGO composite foam has stronger interfacial polarization and dipole polarization. 36,37 Correspondingly, the addition of MEG mainly enhances the RL of the composite foam, and the addition of RGO mainly enhances the absorption loss of the composite foam. From the above conclusions, graphene as a filler added to the matrix can significantly improve the EMI shielding performance of the foam.…”

Section: Emi Shielding Properties Of Psf-based Compositesmentioning

confidence: 99%

Preparation of polysiloxane foam with graphene for promoting electromagnetic interference shielding performance and thermal stability

Sima

Sui

Zhang

2022

J of Applied Polymer Sci

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Mechanical exfoliation of graphene (MEG) and reduced graphene oxide (RGO) are fabricated with using graphite and they are used as fillers to improve the electromagnetic interference (EMI) shielding performance and thermal stability of polysiloxane composite foam. Since graphene builds a conductive network in the matrix and at the same time enhances the impedance mismatch between the syntactic foam and the external free space, the total shielding effectiveness (SE total ) of the composite foam can reach up to 4.74 dB, which is 500% higher than that of pure foam. Moreover, the layered structure of graphene can restrict the small molecules generated during the foam pyrolysis process from leaving the system, and also increases the maximum decomposition temperature of the composite foam (increased from 431.8 to about 500 C), which improves the thermal stability of the foam. These results indicate that the combination of graphene in polysiloxane foams produces composite foams with multifunctional properties, suitable for applications requiring EMI shielding and thermal performance.

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Facile fabrication of lightweight porous FDM-Printed polyethylene/graphene nanocomposites with enhanced interfacial strength for electromagnetic interference shielding

Cited by 71 publications

References 57 publications

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

Hierarchically Multifunctional Polyimide Composite Films with Strongly Enhanced Thermal Conductivity

Relationship between the Microstructure and Performance of Graphene/Polyethylene Composites Investigated by Positron Annihilation Lifetime Spectroscopy

Preparation of polysiloxane foam with graphene for promoting electromagnetic interference shielding performance and thermal stability

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