Reduction of mechanical anisotropy in liquid crystal polymer based composite by functionalized silica nano-particles
| Autor: | Walide Chenniki, BORD MAJEK Isabelle, Mélanie Louarn, Vincent Gaud, Jean-Luc Diot, Komkrisd Wongtimnoi, Brunel, R., Yves Ousten |
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| Přispěvatelé: | Bord, Isabelle, Laboratoire de l'intégration, du matériau au système (IMS), Université Sciences et Technologies - Bordeaux 1-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS), Polyrise, Matériaux, ingénierie et science [Villeurbanne] (MATEIS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National des Sciences Appliquées de Lyon (INSA Lyon), Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), BPI France |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Fourth International Conference on Multifunctional, Hybrid and Nanomaterials (Hybrid Materials 2015) Fourth International Conference on Multifunctional, Hybrid and Nanomaterials (Hybrid Materials 2015), Mar 2015, Sitges, Spain HAL |
| Popis: | International audience; The development of a new generation of innovative thermoplastics for microelectronic and photonic applications is essential to make cavity packages able to compete with ceramic packages in terms of cost and design flexibility. Among plastic materials, thermoplastic resins such as Liquid Crystal Polymers (LCP) offer attractive properties including low gas permeation, high temperature resistance, thermal stability and low dielectric constant (3.1 at 1 MHz and 2.8 at 10 GHz). However LCP present anisotropic mechanical properties (Young’s modulus, CTE, …) due to the straight rigid molecular chains oriented parallel to the molding direction during processing. The difference of properties between the molding direction (MD) and the transverse direction (TD) of injection could induce a potential fragility of the material and then a lack of reliability of the package.In the present study, silica nanoparticles are introduced into the LCP matrix to reduce the anisotropy factor. The mineral fillers have been functionalized by sol-gel method using various chemical functions. The impact of the functionalization on the anisotropy factor is studied. Results show a significant change in mechanical properties in both directions as well as reduced anisotropy factor. The anisotropy factor (EMD/ETD) decreases significantly of about 25% with the addition of the functionalized particles. |
| Databáze: | OpenAIRE |
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