Manipulating conductive network formation via 3D T-ZnO: A facile approach for a CNT-reinforced nanocomposite
| Autor: | Yichao Li, Lijian Zeng, Renfu Li, Xianrong Huang, Zhaojun Xi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Technology
Materials science Physical and theoretical chemistry QD450-801 Energy Engineering and Power Technology Medicine (miscellaneous) Nanotechnology 02 engineering and technology Carbon nanotube TP1-1185 010402 general chemistry 01 natural sciences law.invention Nanomaterials Biomaterials law Electrical conductor Mechanical property Materials processing Nanocomposite carbon nanotubes Process Chemistry and Technology Chemical technology Industrial chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Network formation mechanical property electrical property tetrapod zno whiskers 0210 nano-technology Biotechnology |
| Zdroj: | Nanotechnology Reviews, Vol 9, Iss 1, Pp 534-542 (2020) |
| ISSN: | 2191-9097 |
| Popis: | To achieve an efficient conductive network while preserving the properties of carbon nanofillers is a challenging and essential issue for the fabrication of highly conductive polymeric nanocomposites. The present paper reports a facile approach to manipulate the network formation in the polymer matrix via introducing the tetrapod ZnO whisker (T-ZnO) in the carbon nanotube (CNT)-reinforced epoxy composite. The influence of T-ZnO on the CNT dispersion was evaluated by UV-Vis spectroscopy, rheological measurement, scanning electron microscopy (SEM), and electrical and mechanical properties of the bulk composite. The results showed that the CNTs tend to disperse more uniformly with an increase in T-ZnO loading. An optimized ratio of 1:2 between CNTs and T-ZnO was found to significantly enhance the electrical conductivity by 8 orders of magnitude. A low percolation threshold of 0.25 wt% CNTs was achieved in this hybrid CNTs/T-ZnO composite, which is only 40% of the threshold value in the pure CNTs/epoxy. The flexural strength and modulus of the hybrid composite were also improved noticeably in comparison to the CNTs/epoxy. The mechanism for increasing the performance of the nanocomposite was analyzed. These results indicated that the T-ZnO can assist to efficiently improve the dispersion and the formation of the conductive network, which is beneficial to the enhancement of the mechanical and electrical performance of the nanocomposite. |
| Databáze: | OpenAIRE |
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