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<p>This study demonstrates that EP/Si impregnation is a novel and effective strategy for the customizable optimization of microwave absorption in SLS-manufactured NFG–MZFO composites, without compromising their enhanced mechanical integrity. By simply varying the silicon content in a single post-impregnation step, the electromagnetic performance can be selectively tailored. A clear performance trade-off is observed: a high Si content (1.5 wt %, Q-3) optimizes mechanical strength and peak absorption intensity (flexural strength of 7.26 MPa, RL of − 48.25 dB) but yields a narrower effective bandwidth. Conversely, a moderate Si content (0.5 wt %, Q-1) maximizes the absorption bandwidth (EAB of 2.95 GHz) at the expense of peak intensity. This approach decouples the traditional compromise between achieving strong peak absorption and a broad effective bandwidth, providing a versatile and customizable pathway for designing lightweight, high-strength microwave absorbers for specific application requirements.</p>

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Dual-functional tailoring of mechanical and microwave-absorbing properties in SLS-printed NFG/MZFO composites via epoxy/silicon impregnation

  • 期刊论文

  • 发表日期：

    2026年2月2日

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  • Quashigah Johnray Ziadzi,
  • Haihua Wu,
  • Esther Dzigbogi,
  • Michael Gyan,
  • Shixiong Deng,
  • Jiyuan Wang,
  • Richard Adei-Boakye,
  • Yanbei Hou

摘要

This study demonstrates that EP/Si impregnation is a novel and effective strategy for the customizable optimization of microwave absorption in SLS-manufactured NFG–MZFO composites, without compromising their enhanced mechanical integrity. By simply varying the silicon content in a single post-impregnation step, the electromagnetic performance can be selectively tailored. A clear performance trade-off is observed: a high Si content (1.5 wt %, Q-3) optimizes mechanical strength and peak absorption intensity (flexural strength of 7.26 MPa, RL of − 48.25 dB) but yields a narrower effective bandwidth. Conversely, a moderate Si content (0.5 wt %, Q-1) maximizes the absorption bandwidth (EAB of 2.95 GHz) at the expense of peak intensity. This approach decouples the traditional compromise between achieving strong peak absorption and a broad effective bandwidth, providing a versatile and customizable pathway for designing lightweight, high-strength microwave absorbers for specific application requirements.