Startseite Mechanical performance and electromagnetic shielding effectiveness of composites based on Ag-plating cellulose micro-nano fibers and epoxy
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Mechanical performance and electromagnetic shielding effectiveness of composites based on Ag-plating cellulose micro-nano fibers and epoxy

  • Yu Wang und Jin Tian Huang EMAIL logo
Veröffentlicht/Copyright: 31. Januar 2017
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Abstract

Mechanical and electromagnetic interference shielding composites containing Ag-plating micro-nano cellulose fibers (ANCFs) were prepared as multifunctional materials. ANCFs, as electromagnetic wave reflection filler containing micro-nano cellulose fibers (NCFs) used as the structural component to reinforce the mechanical strength and Ag enhancing electromagnetic shielding effectiveness, were prepared by electroless Ag-plating technology on NCFs surfaces. Ag coating had a thickness of 60 µm without the oxide phase detected. The incorporation of 5 wt % ANCFs into epoxy (EP) substrate yielded impact strength and flexural strength of 1.84 kJ/m2 and 41.6 MPa, which is approximately 2.4 times and 1.41 times higher than EP. The ANCFs-EP composite performed an electromagnetic shielding effectiveness of 34–25 dB at a frequency of 90 kHz in the electromagnetic wave; the EMI shielding effectiveness was improved obviously up to 34 dB, which can meet the requirement of general places.

Acknowledgments

The authors acknowledge support and contributions by Science and Technology Plan Projects under grant no. 20130515; Natural Science Foundation of Inner Mongolia Autonomous Region under grant no. 2013MS0526; and Science Research Innovation Projects of the Inner Mongolia Autonomous Region for graduates under grant no. S2015101290.

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Received: 2016-4-14
Accepted: 2016-11-16
Published Online: 2017-1-31
Published in Print: 2017-10-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

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