Electrospinning preparation of hollow porous Sn0.84Sm0.08Sb0.08O2 micro/nano fibers and their multispectral compatible stealth properties

Abstract

SnO2 material has good stability, electrical conductivity and high visible light transmittance, showing great potential in the field of stealth materials. However, it is an important research topic that how to improve its multispectral compatible stealth performance, meet the requirements of combat weapons against all-round attack, and conform to the development trend of “thin, light-weight, wide-band and high-performance” stealth materials. Therefore, Sn0.84Sm0.08Sb0.08O2 micro/nano fibers material was prepared by coaxial electrospinning method combined with heat treatment process in this work. The material has a three-dimensional hollow porous fiber structure, and has a larger specific surface area and better compatible stealth performance than solid core fibers. The hollow porous Sn0.84Sm0.08Sb0.08O2 micro/nano fibers material shows good absorbing ability in X-band. When the matching thickness is 2.6 mm, its effective absorbing bandwidth is 3.51 GHz, and when the matching thickness is 2.8 mm, its lowest reflection loss(RL) is −22.51 dB at 10.3 GHz. Secondly, it has a lower infrared emissivity in the infrared detector working bands of 3–5 μm and 8–14 μm, which are 0.558 and 0.672, respectively. Finally, it has reflectivity at the laser operating wavelengths of 1.06 μm and 1.55 μm, which are 7.9% and 2.1%, respectively. The material achieves the organic unity of high absorption in the radar band, low emissivity in the infrared band and low reflectivity at the laser wavelength. At the same time, this work explores the regulation mechanism of the hollow porous structure on electromagnetic wave absorption, infrared emissivity and laser reflectivity, which provides a certain reference for the development of single-type, light-weight, high-performance multispectral compatible stealth materials.