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Published on: August 20, 2013
Multi-interfaced Ni/C@RGO/PTFE composites for electromagnetic protection applications with high environmental
Xiang Yuan1, Liang Li1, Yongzhu Yan1
1Center for Advanced Studies in Precision Instruments, School of Material Science and Engineering, Hainan University, Haikou, Hainan 570228, China; State Key Laboratory of Marine Resource Utilization in South China Sea, School of Material Science and Engineering, Hainan University, Haikou, Hainan 570228, China; Center for New Pharmaceutical Development and Testing of Haikou, Center for Advanced Studies in Precision Instruments, Haikou, Hainan 570228, China.
New Ni/C@RGO/PTFE composites offer superior electromagnetic wave absorption and interference shielding. These durable materials provide excellent protection against electromagnetic pollution in harsh environments.
Area of Science:
- Materials Science
- Nanotechnology
- Electromagnetics
Background:
- Growing electromagnetic pollution necessitates advanced materials for absorption and shielding.
- Environmental stability and durability are critical for practical applications of electromagnetic materials.
Purpose of the Study:
- To develop magnetic/dielectric multi-interfaced composites with enhanced electromagnetic protection and environmental stability.
- To investigate Ni/C@RGO/PTFE composites for electromagnetic wave absorption (EWA) and electromagnetic interference (EMI) shielding.
Main Methods:
- Fabrication of Ni/C@RGO/PTFE composites utilizing magnetic/dielectric interfaces.
- Characterization of composite properties for EWA and EMI shielding performance.
- Evaluation of material stability and durability in corrosive media.
Main Results:
- Optimal reflection loss of -61.48 dB and effective absorption bandwidth of 7.20 GHz at 5 wt% filler loading.
- Optimal absorption effectiveness of 9.50 dB and absorption coefficient of 0.49.
- Maintained over 90% EMI shielding effectiveness in corrosive media due to protective carbon coating and PTFE matrix.
Conclusions:
- Ni/C@RGO/PTFE composites demonstrate high-performance EWA and EMI shielding capabilities.
- The composite structure provides excellent environmental stability and durability.
- Presents a viable strategy for developing advanced electromagnetic protection materials with wide future applications.
