Flexible- Elastic Copolymerized Polyurethane- Tannin Foams - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Applied Polymer Science Année : 2014

Flexible- Elastic Copolymerized Polyurethane- Tannin Foams

Résumé

Open cell foams obtained by the simultaneous coreaction of condensed flavonoid tannins with an alkoxylated fatty amine and polymeric diphenylmethane isocyanate yielded highly flexible/elastic polyurethane foams. Copolymerized amine/isocyanate/tannin oligomers were identified by C-13 NMR and MALDI-TOF spectroscopy. In general, between 30% and 50% of natural tannins is added to the components used to obtain polymerisation of the polyurethane. The characteristic of these new, partially biosourced polyurethanes is that the tannin present slows down burning, some of them can be made flame self-extinguishing and if burning they neither flow nor asperge flaming material around, contrary to what occurs with normal polyurethanes. This limits the possibility of transmitting fire to other materials in the same environment. Cyclic compression tests were carried out showing that after 50 cycles foam recovery was in excess of 80%.

Dates et versions

hal-01295582 , version 1 (31-03-2016)

Identifiants

Citer

Maria Cecilia Basso, Samuele Giovando, Antonio Pizzi, Harald Pasch, Nadine Pretorius, et al.. Flexible- Elastic Copolymerized Polyurethane- Tannin Foams. Journal of Applied Polymer Science, 2014, 131 (13), ⟨10.1002/app.40499⟩. ⟨hal-01295582⟩
100 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More