Journal
MATERIALS & DESIGN
Volume 188, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2019.108427
Keywords
Hollow spheres; Lattice structure; Composites; Microwave absorption
Categories
Funding
- The 7th Generation Ultra DeepWater Drilling unit Innovation Project
- Fundamental Research Funds for the Harbin Engineering University [HEUCFG201816, GK2100260265]
- Aeronautics Power Foundation [6141B090571]
- Technology Innovation Centre Project [HDLCXZX2018ZH038]
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Lightweight absorption materials with superior mechanical properties have received significant attention owing to their potential for use in military stealth and electromagnetic protection applications. Herein, a novel electromagnetic (EM) wave absorbing lattice structured composite material containing a hollow short carbon fiber (SCF)/Fe3O4/epoxy sphere filler, and an epoxy resin matrix, is described. The morphology, density, and isostatic compression strength of the hollow SCF/Fe3O4/epoxy spheres were measured, and the mechanical and electromagnetic wave absorption properties of the epoxy resin composite embedded with the hollow SCF/Fe3O4/epoxy spheres were studied. The results indicate that the composite possessed a high compression strength of similar to 573 MPa with a density of only similar to 0.92 g/cm(3). Furthermore, the effective absorption bandwidth within the range of 2-18 GHz of the composite was 1.8 GHz, with an ultra-thin equivalent thickness of only similar to 0.48 mm. The maao-sized hollow structure spheres were effective EM wave absorption enhancements, and the lattice composite embedded with these hollow spheres presented a unique structure and excellent absorption performance. (C) 2020 The Authors. Published by Elsevier Ltd.
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