4.7 Article

Thermal conductivity improvement of composite carbon foams based on tannin-based disordered carbon matrix and graphite fillers

Journal

MATERIALS & DESIGN
Volume 83, Issue -, Pages 635-643

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.06.057

Keywords

Tannin; Graphite filler; Composite carbon foams; Thermal conductivity; Mechanical properties

Funding

  1. European Community [296006]
  2. CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster) through local (Conseil General des Vosges) fund
  3. CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster) through national (DRRT) fund
  4. CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster) through national (FNADT) fund
  5. CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster) through European (FEDER) fund

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Carbonaceous porous matrices were prepared from a tannin-based resin by physical foaming, having improved thermal properties by addition of various kinds and various amounts of graphite fillers. The resultant composite carbon foams presented much higher thermal conductivity, making them suitable for hosting phase-change materials with the aim of using them in seasonal storage applications. These materials were investigated in terms of porous structure, thermal and mechanical properties. It was shown that, unlike what was a priori expected, smaller particles were far more suitable for getting conductive, strong and porous matrices. The smaller were the particles, the better were the results. These findings were explained and justified, making such biomass-based composite carbon foams interesting and cheap candidates for thermal storage applications. (C) 2015 Elsevier Ltd. All rights reserved.

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