Research on dielectric and microwave absorbing properties of TiO2/TiB2/Thermoplastic polyurethanes (TPU) composite materials

TiO2/TiB2 materials are prepared by the carbothermal method and high-temperature calcination. Further, the phase composition, microstructure, dielectric and electromagnetic (EM) wave absorption characteristics are investigated. The results display that the product is composed of TiO2, TiB2 and impur...

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Bibliographic Details
Published in:Journal of physics. Conference series 2022-04, Vol.2248 (1), p.012012
Main Authors: Liu, Xiongzhang, Li, Xixi, Lei, Xue, Zhang, Deping, Liu, Zhijun, Long, Xueyuan, Gong, Rongzhou
Format: Article
Language:English
Subjects:
Absorption spectra
Complex permittivity
Composite materials
Displays
High temperature
Microwave absorption
Phase composition
Physics
Polymer matrix composites
Thickness
Titanium diboride
Titanium dioxide
Urethane thermoplastic elastomers
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Summary:TiO2/TiB2 materials are prepared by the carbothermal method and high-temperature calcination. Further, the phase composition, microstructure, dielectric and electromagnetic (EM) wave absorption characteristics are investigated. The results display that the product is composed of TiO2, TiB2 and impurity phases. The complex permittivity increases at elevated TiO2/TiB2 loading and slowly decreases with rising frequency in 2-18 GHz. When the TiO2/TiB2 content is 45 wt%, the minimum reflection loss (RLmin) reaches -43.12 dB at 11.68 GHz with a thickness of 1.9 mm. The effective absorption band (EAB, RL
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/2248/1/012012