Direct Synthesis of Carbon Nanofibers on Cement Particles
| Autor: | Ying Tian, Karin Habermehl-Cwirzen, Andrzej Cwirzen, Esko I. Kauppinen, Sergey D. Shandakov, Oleg V. Tolochko, Ekaterina S. Vasilieva, Albert G. Nasibulin, Maarit Karppinen, Vesa Penttala, Prasantha R. Mudimela, Tatiana S. Koltsova, Jari Malm, Ilya V. Anoshkin, Larisa I. Nasibulina |
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| Rok vydání: | 2010 |
| Předmět: | |
| Zdroj: | Nasibulina, L I, Anoshkin, I V, Shandakov, S V, Nasibulin, A G, Cwirzen, A, Mudimela, P R, Habermehl-Cwirzen, K, Malm, J E M, Koltsova, T S, Tian, Y, Vasilieva, E S, Penttala, V, Tolochko, O V, Karppinen, M J & Kauppinen, E I 2010, ' Direct synthesis of carbon nanofibers on cement particles ', Transportation Research Record, vol. 2142, no. 1, pp. 96-101 . https://doi.org/10.3141/2142-14 |
| ISSN: | 2169-4052 0361-1981 |
| DOI: | 10.3141/2142-14 |
| Popis: | Carbon nanotubes (CNTs) and nanofibers (CNFs) are promising candidates for the next generation of high-performance structural and multifunctional composite materials. One of the largest obstacles to creating strong, electrically or thermally conductive CNT–CNF composites is the difficulty of getting a good dispersion of the carbon nanomaterials in a matrix. Typically, time-consuming steps are required in purifying and functionalizing the carbon nanomaterial. A new approach under which CNTs–CNFs are grown directly on the surface of matrix and matrix precursor particles is proposed. Cement was selected as the precursor matrix, since it is the most important construction material. A novel cement hybrid material (CHM) was synthesized in which CNTs and CNFs are attached to the cement particles by two different methods: screw feeder and fluidized bed reactors. CHM has been proved to increase the compressive strength by two times and the electrical conductivity of the hardened paste by 40 times. |
| Databáze: | OpenAIRE |
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