Preparation of lignin-based carbon/polyaniline composites for advanced microwave absorber

Preparation of lignin-based carbon/polyaniline composites for advanced microwave absorber

Lignin and polyaniline (PANI) as raw materials were pretreated and calcined to prepare a lignin-based carbon/PANI composite microwave absorbent. The microscopic, structural, and microwave absorption performance of lignin-based carbon/PANI composites were investigated using X-ray diffraction, Raman s...

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Veröffentlicht in:Diamond and related materials 2021-01, Vol.111, p.108219, Article 108219
Hauptverfasser: Wen, Minyue, Zhao, Yan, Li, Zongru, Lai, Shengfa, Zeng, Qiuyu, Liu, Changlang, Liu, Yin
Format: Artikel
Sprache:eng
Schlagworte:
C band
Carbon
Composite
Electron microscopy
Fourier transforms
Frequency ranges
Impedance matching
Infrared analysis
Lignin
Lignin-based carbon
Microscopy
Microwave absorbers
Microwave absorption
Network analysers
Polyaniline
Polyanilines
Polymer matrix composites
Raman spectroscopy
Raw materials
Spectrum analysis
Superhigh frequencies
Weight reduction
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Zusammenfassung:Lignin and polyaniline (PANI) as raw materials were pretreated and calcined to prepare a lignin-based carbon/PANI composite microwave absorbent. The microscopic, structural, and microwave absorption performance of lignin-based carbon/PANI composites were investigated using X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, and vector network analyzer. Results show that the optimized reflection loss (RL) of the lignin-based carbon/PANI composites is −50.96 dB, its matching thickness is 3.09 mm, and its effective absorption frequency range is 6.8–10.8 GHz (RL 
ISSN:0925-9635
1879-0062
DOI:10.1016/j.diamond.2020.108219