Structures, Thermo-mechanical, and Electromagnetic Shielding Properties of Carbon Materials-Reinforced Thermotropic Liquid Crystalline Polyester Composites
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초록
내용
With the increasing use of intensive and wireless electronic devices, electromagnetic interference (EMI) shielding has become a crucial issue. The EMI shielding of polymer composite is highly related to the properties of electroconductive fillers, as most polymers are inherently insulating. Carbon materials such as carbon fibers (CF) and carbon nanotubes (CNT) are widely employed as functional fillers in composites due to their exceptional mechanical, thermal, and electrical properties. This study investigates the EMI shielding properties of thermotropic liquid crystalline polyester (TLCP)-based composites reinforced with short CFs and CNTs, which were fabricated via facile melt compounding. XRD, SEM, and FT-IR are used to measure the morphology and structural features of the composites. The thermal, rheological, and mechanical properties are measured by DSC, TGA, rheometer, and DMA. Additionally, the electrical properties and EMI shielding performance are characterized by an electrometer and network analyzer, respectively.