Cuming Microwave C-STOCK 265 Lightweight Artificial Dielectric Material

The C-STOCK 265 is a rigid, lightweight, filled plastic material that functions as an artificial dielectric material. It exhibits controlled dielectric constant and low dissipation factor at microwave frequencies. C-STOCK 265 is normally supplied in cast plates, bars, and rods. The material is useful in making microwave lenses, radomes and a variety of antenna parts, particularly for aircraft applications. Its principle advantage is that it is much lower in density than conventional materials of equal dielectric constant.

The standard form of C-STOCK 265 is based on epoxy plastic resin and glass microspheres combined to form syntactic foam, loaded with capacitive filler to achieve the desired dielectric behavior. The material is strong enough to serve as the core of load-bearing composite sandwich panels. Special formulations can be provided to meet unusual requirements. Typical properties of standard C-STOCK 265 are given below.

AVAILABILITY

When ordering C-STOCK 265, specify the desired dielectric constant and any other special features. The most common forms supplied are flat plates 12 x 12in., in thicknesses ranging from 0.25” to 1.00”, although many other sizes and shapes can be made. C-STOCK 265 easily machined to complex geometries and can be bonded to itself or to a substrate using an epoxy adhesive such as C-BOND 245.