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- Title
Effect of the Cell Count on Geometrical, Mechanical, and Thermal Properties of Hierarchical‐Porous Reticulated Copper Foams from a Combination of Sponge Replication and Freeze‐Drying Techniques.
- Authors
Sutygina, Alina; Betke, Ulf; Scheffler, Michael
- Abstract
Copper foams are manufactured from polyurethane template foams with a cell size of 10 and 30 ppi using two techniques: Sponge replication and a combination of sponge replication with additional freezing steps to obtain lamellar strut pores. The total porosity of foams is ≈93% with and ≈87% without additional freezing, respectively. The foams possess randomly oriented lamellar pores with a thickness of 40–56 μm. The thickness of the material lamellae is 72–80 μm. The specific surface area is increased by the additional lamellar pores; this value ranges from 24 to 42 cm2 g−1 for the 10 ppi templated foams. The influence of the cell size of the template foams and the lamellar pores within the struts on the (strut) porosity, the mechanical properties and the thermal conductivity is investigated.
- Subjects
FOAM; THERMAL properties; FREEZE-drying; URETHANE foam; COPPER; THERMAL conductivity
- Publication
Advanced Engineering Materials, 2022, Vol 24, Issue 10, p1
- ISSN
1438-1656
- Publication type
Article
- DOI
10.1002/adem.202200230