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<p>In this study, flexible elastomers are developed as microwave absorbers for industrial and defence applications by incorporating strontium ferrite (SrFe<sub>12</sub>O<sub>19</sub>) and titanium carbide (TiC) into a thermoset polyurethane (PU) matrix. These samples are characterized for their morphological, structural, and thermal properties employing FE-SEM, FTIR, XRD, and TGA analysis, respectively. The hardness, tensile test, and tear resistance of elastomers are used to determine the mechanical properties. These elastomers are characterized for their microwave absorption properties in X-band frequency region. It exhibits a minimum reflection loss (RL) of − 28.14&#xa0;dB in the X-band with a bandwidth of 3.5&#xa0;GHz. The synergistic interaction between magnetic-dielectric phases improves the impedance matching within the thermoset polyurethane elastomer. SrFe<sub>12</sub>O<sub>19</sub>-TiC/PU elastomer exhibits excellent thermal, mechanical, and electromagnetic absorption properties, making them ideal for use in microwave absorption applications, including industrial such as anechoic chambers and defence purposes.</p>

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Fabrication of microwave absorber based on strontium ferrite-titanium carbide composite in thermoset polyurethane matrix

  • 期刊论文

  • 发表日期：

    2025年1月17日

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  • Aarushi Ahlawat,
  • G. D. Tyagi,
  • Sachin Tyagi

摘要

In this study, flexible elastomers are developed as microwave absorbers for industrial and defence applications by incorporating strontium ferrite (SrFe12O19) and titanium carbide (TiC) into a thermoset polyurethane (PU) matrix. These samples are characterized for their morphological, structural, and thermal properties employing FE-SEM, FTIR, XRD, and TGA analysis, respectively. The hardness, tensile test, and tear resistance of elastomers are used to determine the mechanical properties. These elastomers are characterized for their microwave absorption properties in X-band frequency region. It exhibits a minimum reflection loss (RL) of − 28.14 dB in the X-band with a bandwidth of 3.5 GHz. The synergistic interaction between magnetic-dielectric phases improves the impedance matching within the thermoset polyurethane elastomer. SrFe12O19-TiC/PU elastomer exhibits excellent thermal, mechanical, and electromagnetic absorption properties, making them ideal for use in microwave absorption applications, including industrial such as anechoic chambers and defence purposes.