Dielectric Characterization of Polymer Dispersed Liquid Crystal in Microwave Range – Material Integration in Specific Electronic Devices

Krasinski, Freddy; Splingart, B.; Dubois, Frédéric; Maschke, Ulrich; Legrand, Christian

doi:10.1080/15421406.2011.570602

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…[15,[24][25][26][27][28][29] With these properties, LCP is an ideal material for electronic components such as micro-connectors, integrated circuit (IC) devices, and conformal antennas used in high-frequency applications. [30][31][32] In particular, in the flexible board process, LCP is expected to replace polyimide (PI) as the next-generation dominant product for high-frequency applications (above 5 GHz). [25,33] However, owing to its high anisotropic feature, LCP is prone to deformation and warpage.…”

Section: Introductionmentioning

confidence: 99%

Aging Mechanism and Lifetime Prediction of Glass Fiber Reinforced Liquid Crystal Polymer Composite under Thermal and Oxidative Conditions

Liu,

Li,

et al. 2023

Macro Materials & Eng

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Development of fifth‐generation technology leads to a growing demand for materials with exceptional thermal property, mechanical strength, and low dielectric loss. However, ensuring the broad application of such materials by comprehensively investigating their aging mechanisms and service lifetimes remains a challenge. In this work, we have developed a glass fiber (GF) reinforced liquid crystal polymer composite (GF/LCP) and conducted a thorough exploration of its aging mechanism, behavior, and service lifetime under thermal and oxidative conditions. On the basis of the general Arrhenius model, the composite maintains a high level of functionality for a remarkable 18 years at 150 °C and 1.5 years at 200 °C. Despite the extremely high thermal resistance of GF/LCP composite, the LCP matrix exhibits localized brittle fracture, and the main chains still undergo gradual degradation to generate phenolic groups, which ultimately leads to severe pulverization and mass loss. However, a high degree of connection maintenance between GF and LCP components is still reserved. This work provides a valuable reference for the reliable application of 5G materials under thermal and oxidative conditions.

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Section: Introductionmentioning

confidence: 99%

Aging Mechanism and Lifetime Prediction of Glass Fiber Reinforced Liquid Crystal Polymer Composite under Thermal and Oxidative Conditions

Liu,

Li,

et al. 2023

Macro Materials & Eng

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“…Additionally, it shows excellent physical properties such as high mechanical strength, low molding shrinkage, high impact strength from low to high temperature, and excellent heat resistance [ 10 , 11 , 12 ]. Owing to these characteristics, it is mainly used for electronic parts such as micro-connectors and integrated circuit (IC) devices [ 13 , 14 , 15 ]. However, since it has a high anisotropic feature, it is likely to have high deformation and warpage.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Analysis of Sepiolite/Glass Microcapsules/Liquid Crystal Polymer Composites

2021

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Liquid crystal polymer (LCP) composites filled with sepiolite and glass microcapsules were prepared by melt compounding. The composites were extruded using a twin-screw extruder and injection-molded. The objective of this study is to check a possibility of producing a polymeric composite with a low dielectric constant. Physical characteristics of the composites, such as morphological, rheological, mechanical, and electrical properties were analyzed. In particular, the glass microcapsule-reinforced LCP composites showed a significant improvement in lowering the dielectric constant due to its high air content. Additionally, sepiolite could act as an effective filler to improve the mechanical properties of the composites.

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Microwave, Millimeter Wave and Terahertz Applications of Liquid Crystal

Qing,

Zhao,

Zhang

2024

Modern Antenna

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Dielectric Characterization of Polymer Dispersed Liquid Crystal in Microwave Range – Material Integration in Specific Electronic Devices

Cited by 5 publications

References 2 publications

Aging Mechanism and Lifetime Prediction of Glass Fiber Reinforced Liquid Crystal Polymer Composite under Thermal and Oxidative Conditions

Aging Mechanism and Lifetime Prediction of Glass Fiber Reinforced Liquid Crystal Polymer Composite under Thermal and Oxidative Conditions

Fabrication and Analysis of Sepiolite/Glass Microcapsules/Liquid Crystal Polymer Composites

Microwave, Millimeter Wave and Terahertz Applications of Liquid Crystal

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