| Titre : |
Dielectric behavior of OPEFB reinforced polycaprolactone composites at X-band frequence |
| Type de document : |
texte imprimé |
| Auteurs : |
Ahmad Fahad, Auteur ; Z. Abbas, Auteur ; S. J. Obaiys, Auteur ; N. Ibrahim, Auteur ; A. Yakubu, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 18-25 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Caractérisation
Charges (matériaux)
Composites à fibres courtes
Diélectriques
Etat fondu (matériaux)
Huile de palme et constituants
Micro-ondes
Morphologie (matériaux)
Poly-e-caprolactone
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Short fibres are often used as reinforcing materials with thermoplastic polymers to improve the dielectric properties of the composites. In this work, the effects of oil palm empty fruit bunch (OPEFB)-fibre loading on polycaprolactone (PCL) polymer were extensively studied. The synthesis of OPEFB-PCL composites were prepared via melt blend method. Theoretical and experimental analysis of electromagnetic (EMI) propagation, absorption and shielding effectiveness (SE) properties of the composite were also studied. The magnitudes of S-parameters for OPEFB fiber-reinforced PCL composites with different percentages of filler were measured by a rectangular waveguide connected with a microwave vector network analyzer (VNA) at (8 – 12) GHz frequency. Whilst the dielectric properties were studied using an open ended coaxial probe. The morphological characterization of the OPEFB-PCL composite was carried out using X-ray diffraction and scanning electron microscopy (SEM). This work showed that XRD profile patterns slightly changed duo to the filler loading increment which result a reduction in both dielectric constant and loss factor. However, the relative permittivity of pure oil palm fibre and PCL was measured as (1.8-j*0.08) and (2.929-j*0.3242) respectively. In addition, the composition of 12.5 wt% filler gave the highest dielectric constant and loss factor values. However, the reflection loss increases to filler content increments at the maximum frequency of 12 GHz. The excellent behavior of these polymer composites makes them superior nominees for microwave low absorption materials. |
| Note de contenu : |
- THEORY : Transmission line method - Theory of network analyzers
- EXPERIMENTAL DETAILS : Preparation of OPEFB fibre - Preparation of OPEFB-PCL composites - Preparation of test sample - Measurements and characterization - S-parameter measurement
- RESULTS AND DISCUSSION : Morphology - Microwave results |
| DOI : |
10.3139/217.3069 |
| En ligne : |
https://drive.google.com/file/d/1ZV4HwwyeHXgQBYiB6UnynFGgG4EQc2bo/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25762 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 1 (03/2016) . - p. 18-25
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