Characterization And Performance Of Nano Composites And Ti₃C₂T_x

This main content of this paper are the preparation and absorbing properties of Ti₃C₂Tx/Fe₃O₄,TiO₂/C multilayer materials and SiO₂ microbeads/Fe₃O₄/Ti₃C₂Tx.Intercalated a multi-layered Ti₃C₂T_x material which is shaped like an accordion by using intercalator,increased the spacing between layers,and then layered the expanded product by different mechanical treatments.The results shows that the emulsification shear effect is great.The Ti₃C₂T_x/Fe₃O₄ composite material with a diameter of about 20 nanometer was prepared using a single layer Ti₃C₂T_x material with the method of ascorbic acid hydrothermal.Observed the experiment product under SEM and measured the electromagnetic parameters of Ti₃C₂T_x/Fe₃O₄,which showed that the reflectance of the product at 10GHz reached-16.5dB.Ti₃C₂T_x was directly oxidized to get TiO₂/C multilayer materials by microwave heating with SUPER P Li.The electromagnetic parameters of TiO₂/C were measured,and the absorbing value of it was below-15dB.Fe₃O₄ nanoparticles with a diameter of less than 10 nanometer were deposited on the surface of Ti₃C₂T_x by the means of hydrothermal,and Fe₃O₄ particles were promoted by functional groups on the surface of Ti₃C₂T_x.The SiO₂ microbeads were surface graft modified by APS,and SiO₂ microbeads was coated with Fe₃O₄/Ti₃C₂T_x under static electricity to obtain a good shell-core morphology.The absorbing effect of the composite material is below-15.5dB when its frequency band is between 8.2GHz to 12.4GHz,below-16dB in 12.4GHz to18GHz,and below-17dB when 1.6GHz,which accounting for approximately 28.6%of the entire frequency band.The peak appeared at about 13.5GHz,reaching above-19.5dB,which shows a great absorbing performance,and was significantly improved before coating by SiO₂microbeads.