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Electromagnetic shielding effectiveness and serviceability of the multilayer structured cuprammonium fabric/polypyrrole/copper (CF/PPy/Cu) composite.
- Source :
-
Chemical Engineering Journal . Aug2016, Vol. 297, p170-179. 10p. - Publication Year :
- 2016
-
Abstract
- In this paper, we developed a simple and robust synthesis route to fabricate multilayer structured cuprammonium fabric/polypyrrole/copper (CF/PPy/Cu) composite, which could be potentially used as electromagnetic interference (EMI) shield due to its characteristics of both EM wave-absorption and EM wave-reflection. PPy layer was directly deposited onto the bare CF substrate via an in-situ polymerization approach, and the interaction mechanism between PPy and CF substrate was investigated by FT-IR and FT-Raman measurements. The results indicated that the interaction between PPy ( N H) and CF (>C OH) substrate was by hydrogen bonding. Afterwards, Cu film was constructed on the as-made PPy coated CF (CF/PPy) by an electroless copper plating method. The elemental analysis of the samples in each step was conducted by using XPS measurement. XRD analysis showed that the top Cu film had a characteristic face-centered cubic (FCC) crystalline structure. SEM images illustrated that the thickness of the PPy film was about 1.52 μm with 11.4% deviation, which was enough to generate the inter-fiber connection. Moreover, the probable growth mechanism of top-Cu films was proposed according to their surface morphologies. The shielding effectiveness (SE) values of copper plated CF (CF/Cu) and CF/PPy/Cu were recorded and compared by using a Spectrum analyzer (30–1000 MHz). The resultant CF/PPy/Cu composite had a higher EMI SE (30.3–50.4 dB) with sheet resistance of 85.8 mΩ/sq. The results of ultrasonic washing, TGA and tensile measurements revealed that the proposed conductive fabric exhibited an excellent serviceability, which was adequately reliable for practical application. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 13858947
- Volume :
- 297
- Database :
- Academic Search Index
- Journal :
- Chemical Engineering Journal
- Publication Type :
- Academic Journal
- Accession number :
- 115022816
- Full Text :
- https://doi.org/10.1016/j.cej.2016.04.004