Effect of electric field induced alignment and dispersion of functionalized carbon nanotubes on properties of natural rubber
| Autor: | Jiang-Shan Gao, Xiubin Gong, Yan He |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Nanotube
Nanocomposite Materials science General Physics and Astronomy 02 engineering and technology Dielectric Carbon nanotube Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences lcsh:QC1-999 0104 chemical sciences law.invention Thermal conductivity Natural rubber law visual_art Dynamic modulus visual_art.visual_art_medium Composite material 0210 nano-technology lcsh:Physics |
| Zdroj: | Results in Physics, Vol 9, Iss, Pp 493-499 (2018) |
| ISSN: | 2211-3797 |
| Popis: | The original equipment and method for orienting multi-walled carbon nanotubes (MWCNTs) in natural rubber (NR) by alternating current (AC) electric field were reported in the present study. MWCNTs with various volume fractions were dispersed in the mixture latex which composed of natural rubber, additives and methylbenzene. The application of AC electric field during nanocomposites curing process was used to induce the formation of aligned conductive nanotube networks between the electrodes. The aligned MWCNTs in the composites have a better orientation performance and dispersion quality than these of random MWCNTs by analyzing TEM and SEM images. The effects of MWCNTs anisotropy on thermal conductivity, dielectric properties, and dynamic mechanical properties of NR were studied. The mean value of thermal conductivity of composites loading with aligned MWCNTs was 8.67% higher than that of composites with random MWCNTs due to the anisotropy of aligned MWCNTs. The compounds with aligned MWCNTs possessed low dielectric constant, loss tangents and conductivity, namely a good insulativity. The compounds loading with aligned MWCNTs had lower loss modulus and better dynamic mechanical properties than those with random MWCNTs. This method can make full use of the high thermal conductivity of MWCNTs axis, and expand the application areas of natural rubber like conducting heat in a certain direction with a high efficiency. Keywords: Multi-walled carbon nanotubes, Electric-field alignment, Thermal conductivity, Dielectric properties, Loss modulus |
| Databáze: | OpenAIRE |
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