Electrical and mechanical properties of melamine-formaldehyde-based laminates with shungite filler
2005; Wiley; Volume: 26; Issue: 4 Linguagem: Inglês
10.1002/pc.20113
ISSN1548-0569
AutoresBjörn Voigt, Douglas H. McQueen, Michaela Pelíšková, N. N. Rozhkova,
Tópico(s)Fiber-reinforced polymer composites
ResumoPolymer CompositesVolume 26, Issue 4 p. 552-562 Article Electrical and mechanical properties of melamine-formaldehyde–based laminates with shungite filler Björn Voigt, Björn Voigt Division of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenSearch for more papers by this authorDouglas H. McQueen, Corresponding Author Douglas H. McQueen [email protected] Division of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenDivision of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenSearch for more papers by this authorMichaela Pelišková, Michaela Pelišková Polymer Centre, Tomas Bata University, Faculty of Technology, Zlin, Czech RepublicSearch for more papers by this authorNatalia Rozhkova, Natalia Rozhkova Institute of Geology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, RussiaSearch for more papers by this author Björn Voigt, Björn Voigt Division of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenSearch for more papers by this authorDouglas H. McQueen, Corresponding Author Douglas H. McQueen [email protected] Division of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenDivision of Materials Science and Engineering, Chalmers University of Technology, Göteborg, SwedenSearch for more papers by this authorMichaela Pelišková, Michaela Pelišková Polymer Centre, Tomas Bata University, Faculty of Technology, Zlin, Czech RepublicSearch for more papers by this authorNatalia Rozhkova, Natalia Rozhkova Institute of Geology, Karelian Research Center, Russian Academy of Sciences, Petrozavodsk, RussiaSearch for more papers by this author First published: 21 April 2005 https://doi.org/10.1002/pc.20113Citations: 7AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstract Processing issues and the electrical and mechanical properties of a novel combination of a natural carbonaceous filler, Karelian shungite, and a water soluble thermosetting polymer, melamine-formaldehyde, were investigated. Two types of shungite with different carbon contents were investigated and compared to a commercial carbon black. The larger particle size and chemically more active surface of the shungites compared to carbon black leads to easy handling with little dusting and allows water to be used as dispersant. Laminates of melamine-formaldehyde reinforced with random cellulose fibers and filler were prepared by film stacking. The layered structure results in anisotropic resistivities for the shungites with fairly low in-plane percolation thresholds and a dissipative resistivity above the percolation transition. In comparison, carbon black had a lower percolation threshold and a low isotropic resistivity above the percolation transition. The mechanical properties of the composites were slightly deteriorated by all three fillers, indicating poor interfacial adhesion. The results of Fourier transform infrared (FTIR) measurements are interpreted as indicating hydrogen bonding and thus relatively weak adhesion between filler and polymer. Aqueous mixtures of melamine-formaldehyde and shungite filler had lower viscosities than corresponding melamine-formaldehyde and carbon black filler mixtures. POLYM. COMPOS., 26:552–562, 2005. © 2005 Society of Plastics Engineers REFERENCES 1 W.D. Callister, Materials Science and Engineering: An Introduction, John Wiley & Sons, New York (1994). 2 Plasters elektriska egenskaper, PlastForum Nordica, 15, 41 (2001). 3 “MatWeb” by Automation Creations, Inc. http://www.matweb.com (2003). 4 M. Narkis, G. Lidor, A. Vaxman, and L. Zuri, J. 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