Foams

There exist many applications in the aerospace, transportation, and marine industries for materials that have low density, high strength, low thermal expansion coefficient, and high thermal stability.  One of the more promising composite materials that meet this need is syntactic foams which incorporate hollow particles into a matrix phase.  Syntactic foams using KDT polysilazanes have a low density, high thermal stability and a stable, low dielectric constant and tangent loss to 825 °C over a broad frequency range.  These characteristics make it an ideal material for radomes, antennae, thermal protection systems (TPS) and radar transparent structures.

KDT polysilazanes are compatible with a variety of filler particles and microballoons including glass, carbon, and ceramic.  The foams are easily constructed by mixing the micro-balloons with the polysilazane resin and molding under vacuum.  The foam can be molded to shape or machined from a block or slab.

Benefits of Using KDT Polysilazanes as a Foam Matrix:

• High thermal stability
• Low density and moisture absorption
• Low, stable dielectric constant and loss tangent up to 825 °C over a wide frequency

Polysilazane Foam Products:

• KDT Ceraset Polysilazane 20
• KDT Ceraset DI-200