Abstract
Electromagnetic wave (EMW) absorbing coatings with deicing ability are highly attractive in extremely low temperature service circumstances. Here, a flexible, hydrophobic, and photothermal deicing EMW absorbing coating (PNP) were fabricated, by dispersing the pre-reduction porous carbon/Ni (PPC/Ni) fillers into polyurethane (PU) matrix. The re-reduction process enhanced the graphitization degree of carbon and crystallite sizes of Ni (111) facet, which boosted the electrical and magnetic loss property. Compared to PC/Ni, PPC/Ni can achieve its superior EMW absorption performance at lower carbonation temperature, and less filling ratio. Furthermore, relying on its promising EMW absorption property, an EM-driven strain sensor was designed by the resonance coupling of the patterned PNP. Consequently, these original results provide insight into the mechanism underlying pre-reduction’s influence on EMW absorption performance. This work offers a facile and low-cost way for designing next-generation electromagnetic (EM) absorbers that satisfy the requirements for EM packing, ice removal, and health monitoring.
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