A successful product development requires careful planning and innovation. It’s the best way to make the right decisions for your business. The Low dielectric foam of the present invention is a thermoplastic foam. The composition contains at least one oligomer and at least one polymer with a dielectric constant of less than three. This material is highly reflective and has a high mechanical strength.
The polymer is amorphous and has a low density. It is easy to process and handle. It is characterized by low density and good electrical properties. The Low dielectric foam can be customized to meet the needs of microwave applications. Its HF performance makes it suitable for antennas. It is also a structural core for radomes. It can be CNC machined and thermoformed. The process of making a structural foam product is low-pressure injection molding, and it involves the introduction of an inert gas into the melted polymer.
This lowers the density of the finished product,Low dielectric foam thereby reducing its weight. Structural-foam molded products have a cellular core and integral skins, and the process begins with the addition of a foaming agent to the polymer melt stream. The resulting homogeneous material is then filled into a mold through short-shot injection. The process of molding a structural foam part requires more considerations than that for conventional plastic injection molding.
For instance, parts made from structural-foam must be thicker than a quarter-inch, to prevent chemical reactions. This increase in part thickness also increases the cost of the part, but this offsets the lower weight of the material. This process requires larger draft angles and cavity pressures than standard plastic injection molding. However, these disadvantages are not insurmountable: the technology is available to create any kind of foam part.
Tags: Low dielectric foam
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