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In the realm of military applications, the effective management of ice accumulation on strategic equipment without compromising the integrity of the electromagnetic signal transmission is a perennial challenge. To confront this issue, a revolutionary trilayered material composite known as MPE (metal-polyimide-electric heating layer) has been developed, demonstrating a sophisticated balance between deicing functionality and electromagnetic transparency. The MPE composite is ingeniously architected in a trilayer configuration, comprising a frequency-selective wave-transmissive stratum, an interjacent insulating dielectric interlayer, and an electric heating layer. The former is the result of a pioneering surface grafting modality of keratin, subsequently metallized with a nickel (Ni) coat via a chemical plating technique, which concurrently imparts the composite with a temperature-sensitivity range between −10 and 80 °C. The latter is formulated from a cyanate ester (CE) resin with organic conductive fillers, endowing the material with a high thermal threshold of up to 220 °C. Experimental evaluations of the MPE material have yielded a remarkable 88% transmissivity at the designated resonant frequency, a significant improvement over traditional graphene heating layer. This high level of performance, combined with the material's inherent deicing properties and the capacity for remote control via integrated sensing technology, positions the MPE as a substantial breakthrough for military operations. [ABSTRACT FROM AUTHOR]

Particulate‐filled materials with superior mechanical properties and wave permeability have received extensive research attention in the military industry. To elucidate the role of reinforcement in polymers, γ‐Aminopropyltriethoxysilane (APTES) is used to modify hexagonal boron nitride (h‐BN) nanoparticles, which are then filled into polyphenylene oxide@bisphenol A dicyanate ester composite, exhibiting a 1.46‐fold increase in flexural strength and a dielectric constant of 2.66 at 12 GHz. Finite element analysis is employed to design composite material models, successfully predicting the dielectric properties of composites at different frequencies and reinforcement filling levels. The change in the interface energy induced by the silane coupling agent is quantitatively calculated by molecular dynamics simulation, demonstrating that the modified nanoparticles are conducive to improving the flexural strength. Overall, the predicted dielectric and mechanical properties of composites can be utilized to screen for composites that possess excellent dielectric and mechanical properties, thereby greatly improving efficiency. Highlights: A hexagonal boron nitride/polyphenylene oxide@cyanate ester is prepared.Finite element analysis is employed to predict the dielectric properties.The interface energy is calculated by molecular dynamics simulation.The resin has superior mechanical and dielectric properties. [ABSTRACT FROM AUTHOR]