Investigating the Effect of Zn Ferrite Nanoparticles on the Thermomechanical, Dielectric and Magnetic Properties of Polymer Nanocomposites

Abstract

In this study nanocomposites consisting of an epoxy resin and ceramic zinc ferrite nanoparticles have been successfully developed and investigated morphologically and structurally by means of scanning electron microscopy (SEM) images and X-ray diffraction (XRD) spectra. The thermal properties of the nanocomposites were studied via differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The thermomechanical characterization of the fabricated nanocomposites was studied via dynamic mechanical analysis (DMA) and the magneto-dielectric response was assessed by means of a broadband dielectric spectroscopy (BDS) and by employing a superconducting quantum interference device (SQUID) magnetometer. Data analysis demonstrates that the incorporation of nanoinclusions into the matrix improves both the thermomechanical and the dielectric properties of the systems, as indicated by the increase of the storage modulus, the real part of dielectric permittivity and conductivity values with filler content, while at the same time induces magnetic properties into the matrix. Zinc ferrite nanoparticles and their respective nanocomposites exhibit superparamagnetic behavior at room temperature. Three relaxations were recorded in the dielectric spectra of all systems; originating from the filler and the polymer matrix, namely interfacial polarization, glass to rubber transition of the polymer matrix and the reorientation of small polar side groups of the polymer chain.

Investigating The Effect of Magnetite (Fe3O4) Nanoparticles on Mechanical Properties of Epoxy Resin

“…The specimens of tensile test manufactured according to (ASTM D 638-I) at dimension (165 x 25x 5) mm, bending test (ASTM D 790) with dimension (130x12.5x5) mm and Hardness according to (ASTM 2240) with dimension (30x15x5) mm. The resulted sample was put in an oven at 100 ˚C [19]. The above procedure applied for all additive weight percentages of (Fe 3 O 4 ) nanomaterial.…”

Rheological Properties and Fillers Dispersion State in the Elastomer Magnetic Composites

“…Although, their properties depend mainly on the type of elastomeric matrix, their physical‐mechanical, processing and magnetic properties depend also on the type and content of magnetic filler. [ 1,2 ]…”

The Structural, Impedance and Dielectric a Ferrite Core of Iron Manganite and Its Composite

“…Ferrite is a ceramic compound of transition metals with oxygen, which is ferrimagnetic but not conductive. The ferrite used in transformer or electromagnetic cores contains iron oxide combined with manganese [1][2][3][4], zinc, and / or nickel compounds [5][6][7][8]. These materials have high resistivity or low electrical conductivity which prevents eddy currents in the core from causing energy loss.…”

“…Iron manganite (MnFeO3) has its impedance and dielectric constant which decreases with increasing frequency [1,4]. The electrical resistivity of nickel zinc nano ferrites is highly dependent on the size of the crystallinity and with increasing frequency, the dielectric constant decreases [5,6], and the value of tan 𝜕 also decreases [7,8]. The perovskite LaMnO3 compound, with increasing frequency will also experience a decrease in impedance, dielectric and tan 𝜕 constants [9], and also their electrical conductivity [10].…”