Published January 1, 2012
| Version v1
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Mechanical Properties and Morphology of Composites Based on the EVA Copolymer Filled with Expanded Graphite
Creators
- 1. Slovak Acad Sci, Inst Polymer, Bratislava 84541, Slovakia
- 2. Univ Paris Est, CERTES, Ctr Etude & Rech Therm Environm & Syst, Creteil, France
- 3. Slovak Acad Sci, Inst Elect Engn, Bratislava 84541, Slovakia
- 4. Slovak Acad Sci, Fac Elect Engn & Informat Technol, KMI, Bratislava 84541, Slovakia
- 5. Hungarian Acad Sci, Res Inst Tech Phys & Mat Sci, Budapest, Hungary
Description
Polymeric composites were prepared using ethylene-vinylacetate (EVA) matrix and expanded graphite (EG). Mechanical properties were investigated and it was found that Young's modulus and the yield stress of EVA-EG composites significantly increased with graphite content. However, for higher EG content the composites became brittle. The dependence of stress at the break of composites reached maximum at 30 vol.% of the filler. The morphology of both EG filler and composites were investigated using transmission electron microscopy and Raman spectroscopy. All these structural characterizations indicated partial exfoliation of EG within EVA matrix, which leads to the increase of the reinforcement effect.
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