Permittivity measurement of thermoplastic composites at elevated temperature
Article
Article Title | Permittivity measurement of thermoplastic composites at elevated temperature |
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ERA Journal ID | 4599 |
Article Category | Article |
Authors | Ku, Harry S. (Author), Horsfield, Brendan (Author), Ball, James A. R. (Author) and Siores, Elias (Author) |
Journal Title | Journal of Microwave Power and Electromagnetic Energy |
Journal Citation | 36 (2), pp. 101-111 |
Number of Pages | 11 |
Year | 2001 |
Place of Publication | VA, USA |
ISSN | 0832-7823 |
Web Address (URL) | http://www.impi.org/publications/jmpee/ |
Abstract | [Abstract]: The material properties of greatest importance in microwave processing of a dielectric are the complex relative permittivity Epsilon = Epsilon' - jEpsilon'', and the loss tangent, tan Delta = Epsilon'/Epsilon''. This paper describes two convenient laboratory based methods to obtain Epsilon', Epsilon'' and hence tan Delta of fibre-reinforced thermoplastic (FRTP) composites. One method employs a microwave network analyser in conjunction with a waveguide transmission technique, chosen because it provides the widest possible frequency range with high accuracy. The values of the dielectric constant and dielectric loss of glass fibre reinforced (33%) low density polyethylene, LDPE/GF (33%), polystyrene, PS/GF (33%), and Nylon 66/GF (33%), were obtained. Results are compared with those obtained by another method using a high-temperature dielectric probe. |
Keywords | fibre reinforced thermoplastics, loss tangent, complex relative permitivity, network analyser |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Public Notes | No response from publisher to copyright request. |
Byline Affiliations | Department of Mechanical and Mechatronic Engineering |
Faculty of Engineering and Surveying | |
Department of Electrical, Electronic and Computer Engineering | |
Swinburne University of Technology |
https://research.usq.edu.au/item/9y24v/permittivity-measurement-of-thermoplastic-composites-at-elevated-temperature
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