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Material Characterization and Microwave Substrate Applications of Alumina‐Filled Butyl Rubber Composites
Author(s) -
Chameswary Janardhanan,
Namitha Lathikumari Krishnankutty,
Brahmakumar Methalayil,
Sebastian Mailadil Thomas
Publication year - 2013
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.12067
Subject(s) - materials science , composite material , dissipation factor , composite number , volume fraction , natural rubber , dielectric , ceramic , permittivity , microwave , relative permittivity , physics , optoelectronics , quantum mechanics
Composites of butyl rubber with micron alumina ( BRAL ) and nanoalumina ( BR n AL ) have been prepared by sigma mixing. The stress‐strain curves of both BRAL and BR n AL composites show the mechanical flexibility of the composites. The dielectric and thermal properties of both composites were studied as a function of ceramic loading. For 0.1 volume fraction of micron alumina loading, the composites have attained a relative permittivity ( ε r ) of 2.82 and loss tangent (tanδ) of 0.0023 at 5 GH z, and for the same volume fraction of nanoalumina content, the composite showed ε r of 3.15 and tanδ of 0.014 at 5 GH z.