Abstract
A comparative investigation of microstructure, mechanical properties, complex permittivity and microwave absorbing properties of two types of SiCf/epoxy composites were investigated. The microstructure of SiCf was characterized by scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and Raman spectra techniques. The different microstructure led to different complex permittivity of the composites. The complex permittivity of KD-ISiCf/epoxy composite was larger than their counterparts of SLF-SiCf/epoxy composite while the flexural strength was almost same. The strong interfacial polarization and high electrical conductivity are attributed to the higher complex permittivity of KD-ISiCf/epoxy composite. Though the complex permittivity of KD-ISiCf and SLF-SiCf composites have big difference, the absorbing properties in the X band (8.2–12.4 GHz) were not good due to the impedance degree and attenuation characteristics cannot meet the requirement at the same time.
| Original language | English |
|---|---|
| Pages (from-to) | 10-17 |
| Number of pages | 8 |
| Journal | Composites Part A: Applied Science and Manufacturing |
| Volume | 93 |
| DOIs | |
| State | Published - 1 Feb 2017 |
Keywords
- A. Polymer-matrix composites (PMCs)
- B. Electrical properties
- B. Mechanical properties
- Microwave absorbing properties
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