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- W3005705993 abstract "Vapor-grown carbon fiber (VGCF)-based polyurethane foam ([email protected]) was fabricated by H2O–N, N-dimethyl formamide (DMF) solvent exchange for compaction-adjustable high-performance microwave shielding. [email protected] specimens with different thicknesses were obtained by compression molding at 120 °C and 0–20 MPa. Tensile tests indicated that the hot compression enhanced both the mechanical strength and elongation of the [email protected] Moreover, with increasing compression, the electrical conductivity (σ) of the [email protected] was improved by orders of magnitude. This indicated that the effective inter-connection of VGCFs achieved by hot compression is vital for enhancing the electrical conductivity of the [email protected] As for the microwave shielding, the results showed that increasing compression greatly improved the microwave shielding performance of the [email protected] For example, the [email protected] specimen with approximately 25 wt% VGCF, which had thicknesses of 1.96 mm and 0.45 mm before and after hot-compression, respectively, revealed a change in shielding effectiveness (SE) from 10-15 dB to 35–50 dB. This is because the hot compression was considered to efficiently improve the electrical inter-connection of the nanoscale carbon nanofibers in the [email protected] This research demonstrated that the structure optimization of shielding materials is of great importance for improvement of electrical conductivity and microwave shielding performance." @default.
- W3005705993 created "2020-02-24" @default.
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- W3005705993 date "2020-05-01" @default.
- W3005705993 modified "2023-09-30" @default.
- W3005705993 title "Carbon nanofiber-structured polyurethane foams for compaction-adjustable microwave shielding" @default.
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- W3005705993 doi "https://doi.org/10.1016/j.matchemphys.2020.122808" @default.
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