Broadband Electromagnetic Radiation Absorber Based on Bifunctional Polymer-Magnetite Composite |
| O. Aksimentyevaa, S. Malynychb, c, R. Filipsonovb, R. Gamernykd
aDepartment of Chemistry, Ivan Franko National University of Lviv, 8 Kyryla and Methodiya St., 79005 Lviv, Ukraine bHetman Petro Sahaydachnyi Army Academy, 32 Heroes of Maidan St., 79026 Lviv, Ukraine cLviv Polytechnic National University, 12 S. Bandery St., 79013 Lviv, Ukraine dDepartment of Physics, Ivan Franko National University of Lviv, 8 Kyryla and Methodiya St., 79005 Lviv, Ukraine |
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| We report on fabrication and studies of hybrid polymer-magnetite composite based on the thermoreactive epoxy resin filled with magnetite Fe3O4 particles and conductive conjugated polymer. The composite is capable of absorbing electromagnetic radiation in the broad spectral range, including microwaves and near-infrared. Dispersed magnetite Fe3O4 in the form of spherical particles with the diameter 1...2 μm provides effective scattering of infrared radiation, substantially reducing reflected infrared signal. It was also found that composite containing magnetic microparticles and particles of polyaniline doped with p-toluene sulfonic acid in a 1:1 ratio exhibits high hardness and provides exceptional anticorrosive properties when used as a coating on the surface of steel. Our findings may have wide potential applications, including effective electromagnetic radiation shielding and antiradar coatings. |
DOI:10.12693/APhysPolA.141.356 topics: electromagnetic shielding, antiradar coating, magnetite, polyaniline |