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Flexible polymer composite electromagnetic crystals
Author(s) -
Marrett Courtney,
Moulart Alexandre,
Colton Jonathan,
Tcharkhtchi Abbas
Publication year - 2003
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.10068
Subject(s) - materials science , composite material , dissipation factor , dielectric , composite number , thermoplastic elastomer , rod , ceramic , thermoplastic , crystal (programming language) , peek , permittivity , dielectric elastomers , elastomer , polymer , optoelectronics , medicine , alternative medicine , pathology , computer science , copolymer , programming language
Abstract The dielectric properties of a ceramic powder (BaTiO 3 ) filled thermoplastic elastomer (EPDM TPE) were investigated for use in a flexible electromagnetic crystal. Materials were produced that had a high dielectric constant (approximately 9) and low loss tangent (less than 0.01). Materials were extruded and injection molded so as to povide low‐cost processing. Mechanical and electromagnetic test results showed the effect of processing conditions on the final quality of the composite. The shear rate during processing and the number of mixing cycles were found to affect the final material characteristics significantly. An electromagnetic crystal woven from extruded rods showed good reflectivity in the 10–15 GHz region.