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Single-Source-Precursor Synthesis and Electromagnetic Properties of SiCN-Based Ceramic Nanocomposites Modified with Carbon Nanofillers from 1D CNTs to 3D RGO/CNTs

Liu, Xingmin (2018):
Single-Source-Precursor Synthesis and Electromagnetic Properties of SiCN-Based Ceramic Nanocomposites Modified with Carbon Nanofillers from 1D CNTs to 3D RGO/CNTs.
Darmstadt, Technische Universität, [Online-Edition: https://tuprints.ulb.tu-darmstadt.de/8098],
[Ph.D. Thesis]

Abstract

Carbon nanotubes (CNTs), reduced graphene oxide (RGO) and CNTs/RGO hybrids are highly promising electromagnetic (EM) absorbents due to their intrinsic advantages including excellent electric conductivity, high specific surface area and good mechanical strength. However, the homogeneous dispersion of them has been a challenge. In this thesis, single-source-precursor route as a promising approach to achieve homogeneous dispersion, is employed to prepare nano-carbon fillers (CNTs, RGO, RGO/CNTs) modified ceramic nanocomposites as novel and prospective EM materials for EM absorption and shielding application. The microstructure of the nanocomposites is analyzed in detail and correlated with the permittivity and EM shielding performance of the resultant materials.

Item Type: Ph.D. Thesis
Erschienen: 2018
Creators: Liu, Xingmin
Title: Single-Source-Precursor Synthesis and Electromagnetic Properties of SiCN-Based Ceramic Nanocomposites Modified with Carbon Nanofillers from 1D CNTs to 3D RGO/CNTs
Language: English
Abstract:

Carbon nanotubes (CNTs), reduced graphene oxide (RGO) and CNTs/RGO hybrids are highly promising electromagnetic (EM) absorbents due to their intrinsic advantages including excellent electric conductivity, high specific surface area and good mechanical strength. However, the homogeneous dispersion of them has been a challenge. In this thesis, single-source-precursor route as a promising approach to achieve homogeneous dispersion, is employed to prepare nano-carbon fillers (CNTs, RGO, RGO/CNTs) modified ceramic nanocomposites as novel and prospective EM materials for EM absorption and shielding application. The microstructure of the nanocomposites is analyzed in detail and correlated with the permittivity and EM shielding performance of the resultant materials.

Place of Publication: Darmstadt
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Dispersive Solids
Date Deposited: 21 Oct 2018 19:55
Official URL: https://tuprints.ulb.tu-darmstadt.de/8098
URN: urn:nbn:de:tuda-tuprints-80982
Referees: Riedel, Prof. Dr. Ralf and Travitzky, Prof. Dr. Nahum
Refereed / Verteidigung / mdl. Prüfung: 6 April 2018
Alternative Abstract:
Alternative abstract Language
Kohlenstoffnanoröhren (CNTs), reduziertes Grapheneoxid (RGO) und CNTs/RGO Hybridmaterialien weisen eine starke Absoptionsfähigkeit gegenüber elektromagnetischer Strahlung auf, was sie zu vielversprechenden abschirmenden Materialien macht. Dies beruht auf ihren spezifischen Eigenschaften, wie hohe elektrische Leitfähigkeit, hohe spezifische Oberfläche und hohe Festigkeit. Allerdings ist die Herstellung homogener Dispersionen aus den genannten Materialien immer noch eine Herausforderung. Diese These stellt die erfolgreiche Anwendbarkeit der Einkomponenten-Precursor Synthese (Single-source precursor) zur Herstellung von homogenen Dispersionen vor. Es wurden homogene, keramische Materialien mit nanoskaligen Kohlenstoffadditiven (CNTs, RGO, RGO/CNTs) hergestellt und deren Eigenschaften hinsichtlich der Absorption von elektromagnetischer Strahlung untersucht. Außerdem wurden die Mikrostrukturen der synthetisierten Nanokomposite analysiert und mit deren elektromagnetischer Abschirmleistung korreliert.German
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