Functionalised SiO2 modified icephobic nanocomposite electrospun membranes for outdoor electromagnetic shielding applications

Outdoor electronic equipment such as signal stations, radar units, and cellular base stations would benefit from electromagnetic interference (EMI) shielding systems, but ice accretion on the surface of these facilities often causes critical challenges, especially in cold regions winter season. In this study, icephobic nanocomposite electrospun membranes were developed via a two-step process recycled polyethylene terephthalate (r-PET), which exhibited high efficiency with superhydrophobic performance. The superhydrophobicity icephobicity membrane achieved after modification using fluorinated silane functionalised SiO2 nanoparticles (FSFS). Superhydrophobicity less than 5° contact angle hysteresis was observed membranes, adhesion strength approximately 50 kPa FSFS modification, ?6 times lower aluminium reference. Furthermore, addition 20 wt% magnetite nanopowders, r-PET demonstrated magnetic response, around 4.22 emu/g, range ?10 + 10 kOe, between 11 22 dB frequency 400 MHz to 6 GHz. incorporated are promising candidate materials for outdoor EMI applications.