Lightweight, Highly Efficient, and Recyclable Absorption-Dominated Electromagnetic Interference Shielding Foams Based on Molecularly Designed Polyamide Elastomer/Carbon Nanotube Nanocomposites
Yi-Huan Lee*, Chia-Hsing Lin, Chia-Wei Lee and Lyu-Ying Wang,
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引用次数: 0
Abstract
In this study, a polyamide elastomer system with excellent foamability was synthesized. Single-walled carbon nanotube (SWCNT) fillers were combined to fabricate a series of nanocomposites. Following supercritical carbon dioxide (sc-CO2) foaming, a high-quality nanocomposite foam system was successfully manufactured. With the incorporation of only 2.5 wt % SWCNT, the foamed product exhibited excellent absorption-dominated electromagnetic interference (EMI) shielding performance with a specific shielding effectiveness (SSE) value of 209.8 dB cm3 g–1, which was resulted from the synergistic effect induced by the three-dimensional conductive network of SWCNT and multiple reflections inside the micropores. Deformation tests were conducted, in which the nanocomposite foam was bent or twisted 1000 times; the foam stably retained its EMI shielding capacity at more than 95% of the original performance. The nanocomposite foam was both recyclable and refoamable, indicating its higher sustainability than traditional foaming products with chemical residues or cross-linking. This study provides insights into the development of high-efficiency EMI shielding foams for lightweight electronic applications.
期刊介绍:
ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.