Bidirectional Oriented Magnetite-Coated Graphite Nanosheets/Epoxy Nanocomposite with Electromagnetic Interference Shielding Anisotropy

Epoxy composites with nanomagnetite-coated graphite nanosheets (GNs) aligned parallel to each other within the matrix were fabricated via magnetic field inducement. The ordered structure of the composite was characterized by atomic force microscopy (AFM) and X-ray diffraction (XRD). The GNs alignment of resulted in anisotropy of electromagnetic interference (EMI) shielding in composite in directions normal and parallel to main plains of the aligned GNs.

References

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[8] 5 3. 30 3. 53 3. 40 3. 98.

[9] 0 3. 29 3. 56 3. 35 3. 82.

[9] 5 3. 01 3. 06 2. 89 3. 26.

[10] 0 3. 10 3. 22 3. 10 3. 45.

[10] 5 2. 89 3. 13 2. 83 3. 19.

[11] 0 2. 71 2. 92 2. 77 3. 17.

[11] 5 2. 98 3. 25 3. 13 3. 64.

[12] 0 2. 86 2. 92 2. 97 3. 10 Frequency (GHz) Return loss[-dB] Filler content 3. 0 wt% Filler content 5. 0 wt % Parallel to the aligned GNs Perpendicular to the aligned GNs Parallel to the aligned GNs Perpendicular to the aligned GNs.

[8] 5 3. 59 3. 12 3. 29 2. 78.

[9] 0 3. 63 3. 31 3. 47 3. 03.

[9] 5 3. 71 3. 40 3. 55 3. 06.

[10] 0 3. 82 3. 32 3. 60 3. 16.

[10] 5 3. 78 3. 40 3. 63 3. 28.

[11] 0 3. 62 3. 37 3. 46 3. 10.

[11] 5 3. 39 2. 94 3. 05 2. 66.

[12] 0 4. 76 3. 99 4. 01 3. 85.