Absorption-dominant electromagnetic interference (EMI) shielding cement with hollow glass microsphere (HGM) exposed to elevated temperatures

Abstract

The rapid evolution and expansion of digital infrastructures has underscored the significance of electromagnetid interference (EMI) shielding composites. However, there has been a notable dearth of efforts to exploce EMI shielding performance in the context of elevated temperatures. This study introducea hollow glass microspheres (HGM) to enhance the EMI shielding performance of carbon fiber (CF)-embedded conductive cement exposed to elevated temperatures. Experimental outcomes delineate the the impact et of HGM inclusion on compressive strength, electrical and thermal conductivities, and EMI shielding performance. HGM incorporation is observed to reduce thermal conductivity, consequently improving EMI shielding performance elevated temperatures by decreasing flection and increasing absorption properties. The investigation incorporates comprehensive ana lyses, including XRD, TG, MIP, and micro-CT, to systematically examine the EMI shielding performances after exposed to levated temperatures. In conclusion, the utilisation of HGM has the potential to yield super light- weight EMI shielding composites with enhanced EMI shielding performance exposed to elevated temperatures.