Fabrication and investigation on the PANI/MWCNT/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites

Huangfu, Yiming; Ruan, Kunpeng; Qiu, Hua; Lu, Yuanjin; Liang, Chaobo; Kong, Jie; Gu, Junwei

doi:10.1016/j.compositesa.2019.03.041

Cited by 197 publications

(54 citation statements)

References 52 publications

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“…5. These two peaks are corresponding to the perpendicular and parallel polymer chain periodicity [21,22]. Similar results for PANI were also found in the literature [2,[23][24][25] Figure 6 shows the XRD pattern of NiFe nanoparticles.…”

Section: X-ray Diffractionsupporting

confidence: 84%

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

et al. 2020

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Magnetic and electrically conductive polymeric nanocomposites were fabricated using polystyrene (PS) as matrix, Nickel Ferrites (NiFe) as magnetic nanofiller and polyaniline (PANI) as electrically conductive nanofiller. Electromagnetic interference (EMI) shielding and infrared (IR) blocking are the main application of these nanocomposites. PANI and NiFe were successfully prepared by chemical and co-precipitation methods respectively. The successful fabrication of nanofillers was confirmed by the X-ray diffraction technique. DC conductivity and dielectric properties were first analyzed and a huge increase in both dielectric constant and DC conductivity was observed. Dielectric Constant seemed to be increased from 2.2 for PS to 5.5 for PS/PANI/NiFe composite. For the measurement of EMI shielding effectiveness (SE), Vector Network Analyzer was used in 0.1-20 GHz frequency range. IR spectroscopy was used to measure IR transmission in near-infrared (NIR) region of 700-2500 nm wavelength range. PS film is transparent for both NIR waves and microwaves, by observing almost 90% transmission in the NIR range and about − 3 dB SE in the microwave region. IR transmission reduces to less than 0.5% for PS/PANI/NiFe composite in the whole NIR range. Also, in the microwave region, − 3 dB shielding enhanced to less than − 35 dB in a broad range of frequency from 0.1 to 20 GHz.

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Section: X-ray Diffractionsupporting

confidence: 84%

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

et al. 2020

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“…This has led to a series of serious social and environmental problems such as electromagnetic interference (EMI), leakage of electromagnetic information, and electromagnetic radiation that harms human health. [1][2][3] Great effort has been made for developing high-performance EMI shielding materials. [4][5][6] Compared with traditional metallic EMI shielding materials, conductive polymer composites have become promising candidates for EMI shielding due to their low density, excellent moldability and processability, and tunable electrical conductivity and resistance to corrosion.…”

Section: Introductionmentioning

confidence: 99%

Preparation of polyimide/multi‐walled carbon nanotubes composite aerogels with anisotropic properties

Miao

Jia

et al. 2020

J of Applied Polymer Sci

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In this study, a series of polyimide/multi‐walled carbon nanotubes (PI/MWCNTs) composite aerogels with anisotropic properties were fabricated. First, the poly(amic acid) ammonium salt (PAS)/MWCNTs suspension was prepared by blending poly(amic acid), deionized water, triethylamine, MWCNTs, and CNT dispersant with the aid of ultrasonication treatment. Afterwards, the aqueous PAS/MWCNTs suspension was unidirectionally frozen at −65 ± 5°C, then followed by freeze‐drying. Subsequently, the PI/MWCNTs composite aerogels were obtained after thermal imidization treatment. Morphology observations revealed that PI/MWCNTs composite aerogels exhibited a “hive‐like” structure while viewed along the freezing direction, whereas a typical channel‐like pore structure was observed perpendicular to the freezing direction. This typical structure rendered PI/MWCNTs composite aerogels with anisotropic properties such as heat conduction, electrical conductivity as well as electromagnetic interference shielding effectiveness when the aerogels were characterized at different directions.

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“…a linear increase in saturation magnetization with the size of the nanoparticles until the bulk value is reached 4 and an optimal crystallite size with relation to coercive force. 5 The magnetic nanoparticles have many interesting uses such as in contrast agents, 6 hyperthermia treatment, 7 magnetic sensors, 8 electromagnetic shielding nanocomposites, [9][10][11] or drug delivery. 12 In 2011 the manufacturing industry producing rare-earth permanent magnets (PM) encountered considerable difficulties with the supply chain of rare-earth metal, which became known as the rare-earth crisis.…”

Section: Introductionmentioning

confidence: 99%

Optimization of magnetic properties in fast consolidated SrFe₁₂O₁₉nanocrystallites

et al. 2019

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Fabrication and investigation on the PANI/MWCNT/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites

Cited by 197 publications

References 52 publications

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Preparation of polyimide/multi‐walled carbon nanotubes composite aerogels with anisotropic properties

Optimization of magnetic properties in fast consolidated SrFe₁₂O₁₉nanocrystallites

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Fabrication and investigation on the PANI/MWCNT/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites

Cited by 197 publications

References 52 publications

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Effect of Nickel-spinal-Ferrites on EMI shielding properties of polystyrene/polyaniline blend

Preparation of polyimide/multi‐walled carbon nanotubes composite aerogels with anisotropic properties

Optimization of magnetic properties in fast consolidated SrFe12O19nanocrystallites

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Optimization of magnetic properties in fast consolidated SrFe₁₂O₁₉nanocrystallites