Electromagnetic Shielding Effectiveness and Impact Test Performance of Carbon Fiber Reinforced Polymer Composites with Hematite and Goethite

Carbon fibers (CFs) are versatile materials widely employed in carbon fiber-reinforced polymer (CFRP) composites, known for their superior mechanical properties and electromagnetic interference (EMI) shielding capabilities. This study focuses on the successful production of 2-layer CFRP composites reinforced with hematite (Fe2O3) particles, in two different sizes (approximate to 44 mu m (325 mesh) and 50 nm), and goethite (FeO(OH)), utilizing the hand lay-up method. The investigation encompasses EMI shielding effectiveness (SE) within a frequency range of 700 to 6000 MHz, and the drop-impact strength resistance properties (under a 6 J load). Results indicate that the highest EMI SE value, 60.19 dB at 5900 MHz, is achieved with 5 wt.% goethite reinforcements, while with a reduction in drop-impact strength. For hematite-reinforced composites, the highest EMI SE, measuring 57.85 dB at 5800 MHz, is observed for samples containing 15 wt.% hematite particles with a size of 50 nm, which exhibited an overall improvement in impact strength compared to non-reinforced samples. This research highlights the potential of these CFRP composites for EMI shielding applications, with considerations for their impact on mechanical properties, providing valuable insights for applications demanding both EMI protection and structural integrity. Discover the potential of 2-layer Carbon Fiber Reinforced Polymer (CFRP) composites, incorporating hematite and goethite nanoparticles for enhanced electromagnetic interference (EMI) shielding. This study reveals significant EMI shielding effectiveness (SE) improvements and explores their impact on mechanical properties. Explore the promising applications of these versatile materials, bridging the gap between protection and structural integrity.image

Automated summary

This study successfully produced 2-layer CFRP composites reinforced with hematite and goethite nanoparticles and investigated their performance in EMI shielding effectiveness and impact strength. The results showed that the samples with hematite particles of 50 nm exhibited the highest EMI shielding effectiveness, and the hematite nanoparticles also improved the impact strength of the composites.