研究目的
To develop ultra-thin, hydrophobic, and flexible electromagnetic wave absorber sheets based on nano-carbon/carbonyl iron in a polypyrrole/silicone rubber matrix with improved EM absorption characteristics and remarkable mechanical properties.
研究成果
The developed nanocomposite sheets, especially the S4 sample with 3% nano-carbon and 47% CI in PP-SR matrix, demonstrated effective EM wave absorption with a minimum reflection loss of ?13 dB at 10.27 GHz and flexibility over 500%. The sheets also exhibited hydrophobic surfaces and improved thermal stability.
研究不足
The study focuses on the X-band region and the specific composition of PP-SR matrix with nano-carbon and CI fillers. The mechanical properties, while improved, still show a decrease in elongation with the addition of fillers.
1：Experimental Design and Method Selection:
The study investigates the EM wave absorbing properties of PP-SR filled with nano-carbon and CI nanocomposites in the X-band. The PP-SR matrix was prepared by incorporating polypyrrole and liquid silicone rubber in a 10:90 ratio.
2：Sample Selection and Data Sources:
Samples with varying wt% of nano-carbon and CI were prepared and characterized.
3：List of Experimental Equipment and Materials:
Materials included liquid PTV-2 silicone rubber, polypyrrole, carbonyl iron powder, and carbon nanoparticles. Equipment included an internal mixer, ultrasonic bath, and hot press.
4：Experimental Procedures and Operational Workflow:
The PP-SR matrix was prepared by dissolving PP in DMF and mixing with SR. Nano-carbon and CI were dispersed in ethanol, dried, and mixed into the PP-SR matrix. The mixture was pressed into sheets.
5：Data Analysis Methods:
The samples were characterized using FTIR, SEM, contact angle measurement, TGA, and mechanical testing.
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