Carbon nanofibers-based nanocomposites with silicon oxy-carbide matrix
| Autor: | Stanislaw Blazewicz, Piotr Palka, Krystian Sokolowski, Aneta Fraczek Szczypta |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Nanocomposite Materials science Carbon nanofiber Scanning electron microscope Process Chemistry and Technology 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Carbide Chemical engineering visual_art Nanofiber 0103 physical sciences Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Thermal stability Ceramic 0210 nano-technology |
| Zdroj: | Ceramics International. 46:1040-1051 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.09.069 |
| Popis: | The subject of the study were nanocomposites made by infiltration of carbon nanofibers in the form of mat (CNF) with a poly(methylphenylsiloxane) resin (PMPS) solution followed by heat-treatment up to 1000 °C. The nanocomposites were studied using scanning electron microscopy (SEM-EDS), X-ray diffraction (XRD), Raman spectroscopy and by means of surface measurement tests. The morphology, microstructure, structure and selected properties of the nanocomposites were analysed. The influence of the CNF oxidative surface treatment on interface properties in CNF/resin and CNF/resin-derived ceramics nanocomposites was investigated. The high surface tension occurring at the nanofiber/resin interface required preliminary chemical treatment of carbon nanofiber surface. The surface chemical state of CNF had a significant influence on their interaction with the resin and formation of SiOC protective layer on nanofibers surface. The SiOC phase formed on the CNF surface at 1000 °C improved thermal stability of the nanocomposites in air. Due to the formation of the free carbon phase during resin heat-treatment the resulting ceramic nanocomposite matrix showed a lower electrical resistance compared to pure carbon mats. |
| Databáze: | OpenAIRE |
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