Liu, Xingmin ; Yu, Zhaoju ; Ishikawa, Ryo ; Chen, Lingqi ; Liu, Xiaofei ; Yin, Xiaowei ; Ikuhara, Yuichi ; Riedel, Ralf (2017)
Single-source-precursor derived RGO/CNTs-SiCN ceramic nanocomposite with ultra-high electromagnetic shielding effectiveness.
In: Acta Materialia, 130
doi: 10.1016/j.actamat.2017.03.031
Article, Bibliographie
Abstract
For the first time, single-source-precursors (SSPs) were synthesized through chemical modification of a commercial poly(methylvinyl)silazane with chemically bonded graphene oxide and carbon nanotube hybrids (GO/CNTs). After pyrolysis of warm-pressed and consolidated SSP-powders at 1000 °C in Ar, monolithic SiCN ceramic nanocomposites modified with in-situ thermally reduced GO/CNTs, namely RGO/CNTs-SiCN, were successfully obtained. The SSP-derived nanocomposite exhibits significantly enhanced dielectric properties if compared with that of a physically-blended-precursor derived reference material. Moreover, the SSP-derived RGO/CNTs-SiCN composite containing 15.0 wt% GO/CNTs in the feed possesses an electromagnetic shielding effectiveness of 67.2 dB with a sample thickness of 2.00 mm, which is the highest value among all the reported graphene-based composites with comparable thickness.
| Item Type: | Article |
|---|---|
| Erschienen: | 2017 |
| Creators: | Liu, Xingmin ; Yu, Zhaoju ; Ishikawa, Ryo ; Chen, Lingqi ; Liu, Xiaofei ; Yin, Xiaowei ; Ikuhara, Yuichi ; Riedel, Ralf |
| Type of entry: | Bibliographie |
| Title: | Single-source-precursor derived RGO/CNTs-SiCN ceramic nanocomposite with ultra-high electromagnetic shielding effectiveness |
| Language: | English |
| Date: | 15 May 2017 |
| Publisher: | Elsevier Science Publishing |
| Journal or Publication Title: | Acta Materialia |
| Volume of the journal: | 130 |
| DOI: | 10.1016/j.actamat.2017.03.031 |
| Abstract: | For the first time, single-source-precursors (SSPs) were synthesized through chemical modification of a commercial poly(methylvinyl)silazane with chemically bonded graphene oxide and carbon nanotube hybrids (GO/CNTs). After pyrolysis of warm-pressed and consolidated SSP-powders at 1000 °C in Ar, monolithic SiCN ceramic nanocomposites modified with in-situ thermally reduced GO/CNTs, namely RGO/CNTs-SiCN, were successfully obtained. The SSP-derived nanocomposite exhibits significantly enhanced dielectric properties if compared with that of a physically-blended-precursor derived reference material. Moreover, the SSP-derived RGO/CNTs-SiCN composite containing 15.0 wt% GO/CNTs in the feed possesses an electromagnetic shielding effectiveness of 67.2 dB with a sample thickness of 2.00 mm, which is the highest value among all the reported graphene-based composites with comparable thickness. |
| Uncontrolled Keywords: | Single-source-precursor, Ceramic nanocomposite, RGO/CNTs hybrids, Dielectric properties, Electromagnetic shielding |
| Divisions: | 11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids 11 Department of Materials and Earth Sciences > Material Science 11 Department of Materials and Earth Sciences |
| Date Deposited: | 11 Jul 2017 11:26 |
| Last Modified: | 11 Jul 2017 11:26 |
| PPN: | |
| Funders: | Z. Y. thanks the Natural Science Foundation of Fujian Province of China (No. 2015J01221) for financial support., X. L. acknowledges the financial support from China Scholarship Council (CSC) (201406290019)., R. I. and Y. I. acknowledge support from the Joint Research Project between Japan and Germany through JSPS Bilateral Program and the Exploratory Research program of MEXT, Core-to-Core Program of JSPS. |
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