Affiliation:
1. Fraunhofer Institute of Material and Beam Technology IWS, 01277 Dresden, Germany
2. SKZ—German Plastics Center, 97076 Wuerzburg, Germany
Abstract
The effect of carbon-based additives on adhesives and potting compounds with regard to electrical conductivity and electromagnetic interference (EMI) shielding properties is of great interest. The increasing power of wireless systems and the ever-higher frequency bands place new demands on shielding technology. This publication gives an overview of the effect of carbon-based fillers on electrical conductivity, electromagnetic shielding properties, and the influence of different fillers and filler amounts on rheological behavior. This work focuses on carbon black (CB), recycled carbon fibers (rCF), carbon nanotubes (CNTs), and complex nanomaterials. Therefore, silicon samples with different fillers and filler amounts were prepared using a dual asymmetric centrifuge and a three-roll mill. It has been found that even with small filler amounts, the electromagnetic shielding properties were drastically raised. The filler content as well as the dispersion technique have a significant influence on most of the fillers. It has also been found that the complex viscosity is strongly influenced by the dispersion technique as well as by the choice and amount of filler. In the experiments carried out, shielding values of over 20 dB were achieved with several fillers, whereby even 43 dB were reached with complex, pre-crosslinked fillers. This signal reduction of up to 99.99% enables almost complete shielding of the related frequency.
Funder
German Federal Ministry of Economic Affairs and Climate Action (BMWK) through the German Federation of Industrial Research Associations
Reference30 articles.
1. Okumura, T., and Kojima, K. (2013). Proceedings of the 2013 IEEE 2nd Global Conference on Consumer Electronics (GCCE), Tokyo, Japan, 1–4 October 2013, IEEE.
2. Luca, C., and Salceanu, A. (2012). Proceedings of the 2012 International Conference and Exposition on Electrical and Power Engineering, Iasi, Romania, 25–27 October 2012, IEEE.
3. Probabilistic Risk Analysis Technique of Intentional Electromagnetic Interference at System Level;Genender;IEEE Trans. Electromagn. Compat.,2014
4. Impact of electromagnetic interference on the functional safety of smart power devices for automotive applications;Deutschmann;Elektrotech. Informationstech.,2018
5. Elektromagnetische Interferenz von aktiven Herzrhythmusimplantaten im Alltag und im beruflichen Umfeld;Napp;Kardiologe,2019
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献