Fabrication and investigation on the PANI/MWCNT/thermally annealed graphene aerogel/epoxy electromagnetic interference shielding nanocomposites

By Yiming Huangfu, Kunpeng Ruan, Huaili Qiu, Yuanjin Lu, Chaobo Liang, Jie Kong, Junwei Gu. Composites. Part A, Applied science and manufacturing, 2019

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Abstract After ultrasonic dispersion of graphene oxide (GO) prepared by modified Hummers method and surface carboxylated multi-walled carbon nanotubes ( f- MWCNT), L-ascorbic acid was added and the MWCNT/thermally annealed graphene aerogel (MWCNT/TAGA) was obtained by thermal annealing. Polyaniline/MWCNT/TAGA (PANI/MWCNT/TAGA) was prepared by slow adding ammonium persulfate into aniline/hydrochloric acid solution containing MWCNT/TAGA. The corresponding PANI/MWCNT/TAGA/epoxy electromagnetic interference shielding nanocomposites were successfully fabricated via template-casting method. Results revealed that when the mass ratio of GO to f- MWCNT was 3:1 and the total loading of PANI/MWCNT/TAGA was 4.61 wt% (2.58 wt% PANI + 0.83 wt% MWCNT + 1.20 wt% TAGA), the obtained PANI/MWCNT/TAGA/epoxy electromagnetic interference shielding nanocomposites presented the highest electromagnetic interference shielding effectiveness (EMI SE, 42 dB). Meanwhile, the corresponding PANI/MWCNT/TAGA/epoxy electromagnetic interference shielding nanocomposites showed electrical conductivity of 52.1 S/cm heat resistance index ( T HRI ) of 171.3 °C, and reduced modulus of 5.35 GPa & hardness of 0.39 GPa.

Subfields: Biomedical Engineering, Electronic, Optical and Magnetic Materials, Mechanics of Materials

View Paper: https://www.semanticscholar.org/paper/6dedff8aa937d7285988b207c1c05206a9a5fba7

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In Biomedical Engineering

  1. Han Zhang
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In Electronic, Optical and Magnetic Materials

  1. Han Zhang
  2. D. Papageorgiou
  3. E. Bilotti

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