Study on preparation and absorption properties of ZnO-graphene-TPU/PLA composites

WU Haihua; FU Wenxin; LIU Shaokang; CHAO Bin; BAO Yuntian

doi:10.13801/j.cnki.fhclxb.20230627.003

Volume 41 Issue 3

Mar. 2024

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Article Navigation > Acta Materiae Compositae Sinica > 2024 > 41(3): 1316-1326

WU Haihua, FU Wenxin, LIU Shaokang, et al. Study on preparation and absorption properties of ZnO-graphene-TPU/PLA composites[J]. Acta Materiae Compositae Sinica, 2024, 41(3): 1316-1326. doi: 10.13801/j.cnki.fhclxb.20230627.003

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WU Haihua, FU Wenxin, LIU Shaokang, et al. Study on preparation and absorption properties of ZnO-graphene-TPU/PLA composites[J]. Acta Materiae Compositae Sinica, 2024, 41(3): 1316-1326. doi: 10.13801/j.cnki.fhclxb.20230627.003

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Study on preparation and absorption properties of ZnO-graphene-TPU/PLA composites

doi: 10.13801/j.cnki.fhclxb.20230627.003

WU Haihua^{1, 2
,
,},
FU Wenxin^{1, 2},
LIU Shaokang^{1, 2},
CHAO Bin^{1, 2},
BAO Yuntian^{1, 2}

1.
College of Mechanical and Power Engineering, China Three Gorges University, Yichang 443002, China
2.
Hubei Engineering Research Center for Graphite Additive Manufacturing Technology and Equipment, China Three Gorges University, Yichang 443002, China

Funds: National Natural Science Foundation of China (51575313)

Received Date: 2023-04-27
Accepted Date: 2023-06-11
Rev Recd Date: 2023-05-24

Available Online: 2023-06-28

Publish Date: 2024-03-01

Abstract

Abstract

Developing light-weight and high-efficiency absorbing composite materials is one of the important ways to solve the electromagnetic pollution. In this paper, ZnO-graphene (GR)/polylactic acid (PLA)/thermoplastic polyurethane (TPU) composite materials were prepared by a two-step method and the phase structure, micromorphology and electromagnetic characteristics of the composite were characterized by XRD, Raman spectroscopy, SEM and vector network analyzer. The effects of different combinations of ZnO/GR on the microwave absorbing properties of the composites were studied, and the synergistic mechanism was revealed. The results show that with the increase of the content of ZnO, the microwave absorbing effect increases at first and then decreases. Proper amount of ZnO dispersed in the matrix increases the defects of the composites enriching the heterogeneous interface, enhancing the interface polarization and dipolarization, and improving the microwave absorbing properties of the composites. When the content of ZnO is 2wt% , at 5.6 mm thickness, the minimum reflection loss is −49.2 dB and the effective absorption bandwidth is 2.0 GHz meaning the best absorption efficiency. The excellent absorbing effect is attributed to the good impedance matching and the synergy among the interface polarization loss, the dipolarization loss and the conductivity loss. In addition, the preparation process of ZnO-GR/PLA/TPU composite is simple and environment-friendly, and the component of absorbing agent can be adjusted which is expected to be used in the manufacturing of complex absorption structures.
- composites,
- graphene,
- ZnO,
- electromagnetic wave absorbing properties,
- impedance matching
Long Abstrsct
Innovation Points

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References(44)

References

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