Shape Anisotropic Chain‐Like CoNi/Polydimethylsiloxane Composite Films with Excellent Low‐Frequency Microwave Absorption and High Thermal Conductivity
Northwestern Polytechnical University · South China University of Technology
Abstract
Abstract The demand for low‐frequency microwave absorption materials is becoming more and more urgent. Novel shape anisotropy chain‐like CoNi is fabricated using polyvinylpyrrolidone as a shape‐directing agent via solvothermal method, which is then mixed with polydimethylsiloxane (PDMS) to prepare corresponding multifunctional chain‐like CoNi/PDMS composite films. Shape anisotropy and strong magnetic coupling effect of chain‐like CoNi enhance natural resonance and magnetic loss capability. The minimum reflection loss (RL min ) is −50.5 dB and low‐frequency effective absorption bandwidth (EAB) is 1.04 GHz (2.64–3.68 GHz) at 3.9 mm for chain‐like CoNi. The corresponding 18 vol% chain‐like CoNi/PDMS composite…
Citation impact
- FWCI
- 37.55
- Percentile
- 100%
- References
- 51
Authors
8Topics & keywords
- Materials science
- Polydimethylsiloxane
- Reflection loss
- Composite number
- Microwave
- Anisotropy
- Absorption (acoustics)
- Thermal conductivity
- Affordable and clean energy