Synthesis of Ni0.5Zn0.5Fe2O4-reinforced E-glass/epoxy nanocomposites for radar-absorbing structures. (25th November 2020)

• Record Type: Journal Article
• Authors: Siva Nagasree, P.; Ramji, K.; Subramanyam, Ch.; Krushnamurthy, K.; Haritha, T.
• Is Part Of: Plastics, rubber, and composites. Volume 49:Number 10(2020)
• Page Start: 434
• Page End: 442
• Publication Date: 2020-11-25
• Subjects: Polymer composite -- E-glass/epoxy -- autocombustion -- nanocrystalline Ni0.5Zn0.5Fe2O4 -- electromagnetic property -- reflection loss -- radar-absorbing material -- X-band; Plastics -- Periodicals; Rubber -- Periodicals; Polymeric composites -- Periodicals; Polymer engineering -- Periodicals; 668.9
• DOI: 10.1080/14658011.2020.1793080
• Languages: English
• ISSNs: 1465-8011

Abstract

ABSTRACT: The development of new radar-absorbing structures (RASs) with strong microwave absorption, fine thickness and adequate structural performance is imperative. Herein, nanocrystalline Ni0.5 Zn0.5 Fe2 O4 was synthesised by a facile and effective sol–gel autocombustion technique. The structural and magnetic properties of ferrite were determined by various characterisation techniques, and E-glass/epoxy-based nanocomposites with different weight percentages of ferrite were fabricated by in-situ polymerisation. Further, electromagnetic properties were investigated to elucidate the possible absorption mechanism of the fabricated structures. The 4-mm-thick double-layered E-glass/epoxy/nickel–zinc ferrite composites exhibited reflection loss (RL) of <−10 dB for a bandwidth of 2.4 GHz and a maximum RL of −33 dB at 9.6 GHz. This performance was attributed to the larger magnetic loss and sufficient matching of electromagnetic parameters. This study provides a unique insight into the utilisation of Ni0.5 Zn0.5 Fe2 O4 for producing lightweight and relatively thin RASs in the X-band at a low cost.