Polyethylene Foams
Rigid foams, as lightweight materials for cellular engineering, are divided into those with open and closed cells.
Closed-cell foams provide greater stability, lower moisture absorption, and higher strength compared to open-cell foams. All types of foam are often used as a core in sandwich composites. Depending on the application, the foam may have a lower density for lightweight products or higher for heavy ones. Combinations of thermosetting foams are also possible.
- Open and closed cells
- Greater stability and strength, lower moisture absorption
- Core in sandwich composites
- Lower or higher density — for light or heavy products
- Combinations of thermosetting foams
Material cross-section
Material structure
Closed-cell foams provide greater stability, lower moisture absorption and higher strength.
- Cells
- Open and closed
- Density
- Lower or higher
- Use
- Core of sandwich composites
