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REPUBLIC OF SERBIA MINISTRY OF DEFENCE
MINISTRY OF DEFENCE Material Resources Sector Defensive Technologies Department
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MILICA MARJANOVIĆ Military Technical Institute, Belgrade, milicagoran@gmail.com DANICA SIMIĆ Military Technical Institute, Belgrade, simic_danica@yahoo.com SRDJA PERKOVIĆ Military Technical Institute, Belgrade, srdja.perkovic@vti.vs.rs JELA GALOVIĆ Military Technical Institute, Belgrade, vti@vti.vs.rs ZIJAH BURZIĆ Military Technical Institute, Belgrade, zijah.burzic@vti.vs.rs ANA TASIĆ Military Technical Institute, Belgrade, vti@vti.vs.rs SLADJAN GRGA Military Technical Institute, Belgrade, vti@vti.vs.rs
Abstract: In design of aircraft it is important to use light-weight, but mechanically strong materials and for this purpose, many new composite structures have been developed, mostly based on strong fibers and a binding resin. In this research a possibility is considered to reinforce composite based on carbon fibers and epoxy resin, adding a small amount of poly (vinyl butyral), PVB and nanostructures of tungsten disulfide. Two kinds of nanoparticles were used in experiments, both known by their good mechanical resistance: fullerene-like nanoparticles and multi-wall nanotubes, IF-WS2 and INT-WS2. Composite samples were prepared to consist of multi-layers of carbon fibers impregnated with epoxy resin and PVB solution containing dispersed nanostructures of WS2 in defined concentrations. Nanoparticles have been observed with scanning electron microscope, SEM. Mechanical properties of the multi-layer composite samples have been tested with two configurations of fiber directions. Analysis has been made to compare results and give conclusions that encourage the future application of these nanostructures to enhance the performance of composites for military aircrafts. Keywords: composites, tungsten disulfide, nanoparticles, nanotubes, carbon, epoxy.
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