Superb electromagnetic shielding polymer nanocomposites filled with 3-dimensional p-phenylenediamine/aniline copolymer nanofibers@copper foam hybrid nanofillers was written by Yao, Feichong;Xie, Wenhao;Ma, Chao;Wang, Dedong;El-Bahy, Zeinhom M.;Helal, Mohamed H.;Liu, Hu;Du, Ai;Guo, Zhanhu;Gu, Hongbo. And the article was included in Composites, Part B: Engineering in 2022.Name: Cuprichydroxide This article mentions the following:
The polymer nanocomposites with 3-dimensional nanofillers can form a 3D network and attain a uniform distribution of nanofillers, which benefits the transfer of charge carriers and phonons as well as the dispersion of stress at a very low loading of nanofillers. These polymer nanocomposites with high mech. properties would have great potential for thermal and elec. conduction as well as electromagnetic interference (EMI) shielding. In this paper, the 3D epoxy nanocomposites are manufactured by stuffing epoxy resin into 3D p-phenylenediamine-aniline copolymer nanofibers@Cu foam (P-PANI@f-Cu) hybrid nanofillers that are constructed by electrophoretic deposition of phosphoric acid doped P-PANI copolymer nanofibers onto the surface of sodium hydroxide oxidized Cu foam. Benefiting from 3D continuous network of P-PANI@f-Cu hybrid nanofillers, the elec. conductivity and thermal conductivity of 3D P-PANI@f-Cu/epoxy nanocomposites with the P-PANI loading of 0.262 wt% could achieve 7.71 ± 0.04 S cm-1 and 5.4670 ± 0.0085 W m-1K-1, resp., which are much better than that of pure epoxy (insulator and 0.2310 ± 0.0017 W m-1K-1, resp.) and epoxy composites filled with only Cu foam (4.46 ± 0.03 S cm-1 and 2.7907 ± 0.0057 W m-1K-1, resp.). Meanwhile, with a thickness of 1.8 mm, the average total EMI shielding effectiveness (SET) of 3D P-PANI@f-Cu/epoxy nanocomposites in the X-band range reaches a high value of 66.14 dB, which is capable of effectively shielding the electromagnetic signal between Bluetooth earphone and smartphone in the practical application. Furthermore, the 3D P-PANI@f-Cu hybrid nanofillers can efficiently prevent the crack growth in the epoxy nanocomposites and improve their mech. properties including hardness and elastic modulus. In the experiment, the researchers used many compounds, for example, Cuprichydroxide (cas: 20427-59-2Name: Cuprichydroxide).
Cuprichydroxide (cas: 20427-59-2) belongs to copper catalysts. Copper catalyst has received great attention owing to the low toxicity and low cost. Copper nanoparticles can catalyze the Ullmann coupling reaction in a wide range of applications.Name: Cuprichydroxide
Referemce:
Copper catalysis in organic synthesis – NCBI,
Special Issue “Fundamentals and Applications of Copper-Based Catalysts”