Foam Coatings

Foams are artificially produced materials with cellular structure and low density.

Classifications

  • Closed-cell foam: the walls between the individual cells are completely closed
  • Open-cell foam: the cell walls are not closed; these foams can therefore absorb liquids
  • Mixed-cell foams contain both types of cells
  • Integral foams: they have a closed, thick outer skin and a cellular core; the density decreases
    towards the core

Properties

Foams are characterized by a very low density (weight per volume) and thermal conductivity with only low strength. Due to the interior structure, components made of foam are virtually free of residual stress.

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