期刊
MATERIALS & DESIGN
卷 63, 期 -, 页码 208-212出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2014.05.072
关键词
Quebracho tannin; Organic foam; Characterisation; Physical properties; Thermal conductivity
资金
- SilvaChimica
- CPER Structuration du Pole de Competitivite Fibres Grand'Est'' (Competitiveness Fibre Cluster), through local (Conseil General des Vosges) fund
- CPER Structuration du Pole de Competitivite Fibres Grand'Est'' (Competitiveness Fibre Cluster), through regional (Region Lorraine) fund
- CPER Structuration du Pole de Competitivite Fibres Grand'Est'' (Competitiveness Fibre Cluster), through national (DRRT and FNADT) fund
- CPER Structuration du Pole de Competitivite Fibres Grand'Est'' (Competitiveness Fibre Cluster), through European (FEDER) fund
The first highly porous organic rigid foams based on condensed tannin extracted from quebracho tree (Schinopsis sp.) are reported. Samples having different densities have been prepared and characterised. Their porous structure and physical properties have been compared with those of foams prepared in similar conditions but based on mimosa or pine tannins. We show that the properties of quebracho foams are comparable, and in some cases better, than those made from other tannins. Quebracho and mimosa present very similar behaviours, attributed to the fact that the corresponding flavonoid units have identical reactive A-rings. In contrast, pine foams behave differently, due to their different A-ring. The results indicate that quebracho is thus an excellent alternative to mimosa for producing thermally insulating tannin foams presenting good mechanical performances. (C) 2014 Elsevier Ltd. All rights reserved.
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