Abstract
In the last years many studies were led to characterise and optimise the tannin-furanic foams. In the present work the up-scaling of the production from laboratory to industrial scale is discussed. The tannin foams produced in an industrial pilot plant have shown comparable properties with the laboratory-produced foams. In particular the panels manufactured in the continuous press presented slightly higher bulk densities of around 176kg/m3 (+20%) which led to higher mechanical properties and thermal conductivities. The up-scaled tannin foams of around 150kg/m3 presented 20–25% enhanced compression resistances (28MPa) and thermal conductivities (55mW/m×K). Lightweight sandwich panels with various side layers were produced directly in the press, without the need of external adhesives. From the marketing viewing angle, the up-scaled tannin foams show higher densities than the other commercial synthetic insulation materials but the mechanical and insulating performances observed are promising and suggests interesting industrial developments for this innovative bio-based product.
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