Synergistic effect of graphene nanoplatelets and carbon black in multifunctional EPDM nanocomposites
| Autor: | Alice Berardo, Raquel Verdejo, Luca Valentini, A. Bolognini, A. Alvino, S. Borsini, Miguel A. López-Manchado, S. Bittolo Bon, Nicola M. Pugno, L. Pappalardo |
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| Přispěvatelé: | European Commission, Ministerio de Ciencia e Innovación (España) |
| Jazyk: | angličtina |
| Předmět: |
Thermal properties
Materials science Scanning electron microscope Composite number Mechanical properties 02 engineering and technology 010402 general chemistry Elastomer 01 natural sciences law.invention Impact behaviour Nano composites Natural rubber law Copolymer Composite material Nanocomposite General Engineering Vulcanization Carbon black 021001 nanoscience & nanotechnology 0104 chemical sciences visual_art Ceramics and Composites visual_art.visual_art_medium 0210 nano-technology |
| Zdroj: | Composites Science and Technology Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0266-3538 |
| DOI: | 10.1016/j.compscitech.2016.03.024 |
| Popis: | Ethylene-propylene-diene terpolymer rubber (EPDM)-based nanocomposites containing carbon black (CB), graphene nanoplatelets (GNPs), and mixtures of the two fillers were prepared. The influence of the relative amounts of the two fillers on the dynamic and static friction coefficients was examined. The static analysis of the coefficient of friction suggests that the partial substitution GNPs into the EPDM/CB blend did not produce a significant variation of the surface grip. The sample comprising EPDM/CB composite and an effective amount of GNPs dispersed in the matrix provides an increase of the thermal conductivity, damping (i. e. shock absorbing properties) and mechanical properties of the nanocomposites. The field-emission scanning electron microscopy and micro tomography analyses showed that the replacement of CB with GNPs reduces the CB aggregation and, hence, improving the percolation of the hybrid fillers and the interface resistance of the composite. The development of thermally conducting elastomeric nanocomposites could envisage their utilization in the processing of rubber blends satisfying the increasing demand to reduce both the duration of the vulcanization process and thus the cost of the vulcanized rubbers. NMP is supported by the European Research Council (ERC StG Ideas 2011 BIHSNAM n. 279985 on “Bio-Inspired hierarchical supernanomaterials”, ERC PoC 2013 KNOTOUGH n. 632277 on “Supertough knotted fibers”, ERC PoC 2015 SILKENE nr. 693670 on “Bionic silk with graphene or other nanomaterials spun by silkworms”), by the European Commission under the Graphene Flagship (WP10 “Nanocomposites”, n. 604391) and by the Provincia Autonoma di Trento (“Graphene Nanocomposites”, n. S116/2012- 242637 and delib. reg. n. 2266). The authors thank MINECO for the partial financial support of this work (project MAT2013-48107-C3). Dr. Manoj Tripathi (Center for Materials and Microsystems, Fondazione Bruno Kessler, Trento e Italy) is gratefully acknowledged for Raman measurements. |
| Databáze: | OpenAIRE |
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