Influence of different carbon-based fillers on electrical and mechanical properties of a PC/ABS blend
| Autor: | Alessandra Lorenzetti, Elisabetta Cagnin, Carlo Boaretti, Michele Modesti, Eleonora Dal Lago, Martina Roso |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Polymers and Plastics Carbon nanotubes chemistry.chemical_element Young's modulus 02 engineering and technology Carbon nanotube engineering.material 010402 general chemistry 01 natural sciences Article law.invention lcsh:QD241-441 symbols.namesake lcsh:Organic chemistry Carbon black Conductive fillers Graphene Polymer blend law Filler (materials) Ultimate tensile strength Composite material General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences chemistry symbols engineering 0210 nano-technology Carbon |
| Zdroj: | Polymers Polymers, Vol 12, Iss 1, p 29 (2019) Volume 12 Issue 1 |
| Popis: | The present work examines the influence of different carbon-based fillers on the performance of electrically conductive polymer blend composites. More specifically, we examined and compared the effects of graphene (GR), carbon nanotubes (CNTs) and carbon black (CB) on a PC/ABS matrix by morphological investigation, electrical and physic-mechanical characterization. Electrical analyses showed volume resistivity decreased when the CNTs and CB content were increased, although the use of melt-mixed GR did not really influence this property. For the latter, solution blending was found to be more suitable to obtain better GR dispersion, and it obtained electrical percolation with a graphene content ranging from 0.5% to 1% by weight, depending on the solvent removal method that was applied. There was a gradual improvement in all of the composites&rsquo dielectric properties, in terms of loss factor, with temperature and the concentration of the filler. As expected, the use of rigid fillers increased the composite stiffness, which is reflected in a continuous increment in the composites&rsquo modulus of elasticity. The improvements in tensile strength and modulus were coupled with a reduction in impact strength, indicating a decrease in polymer toughness and flexibility. TEM micrographs allowed us to confirm previous results from studies on filler dispersion. According to this study and the comparison of the three carbon-based fillers, CNTs are the best filler choice in terms of electrical and mechanical performance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|