ECCOSTOCK® PP is a closed cell, cross-linked hydrocarbon foam with low dielectric loss, low dielectric constant, and low density. This foam is light-weight, weather resistant and has negligible water absorption and provides excellent thermal insulation. The dielectric constant does not change with frequency and any change with temperature is negligible.
ECCOSTOCK® PP will return to its normal thickness after being compressed and can be used in a variety of microwave applications. Due to the low dielectric constant, the material is essentially transparent to electromagnetic energy. As such it can be used as radomes , blankets and coverings where radar transparency is required. It has also found uses on ocean buoyancy applications and has been used as a spacer in antenna applications.
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