Foam materials have properties that can vary greatly among themselves. We test each material in its own field, compare test results and functional properties, thus creating a comprehensive product range with a tailored solution for every performance requirement.
The foaming behavior of the material differs mainly in foaming height and expansion pressure. The foaming height can be between 2 and 70 times the original material thickness. As some materials re-foam at higher temperatures, it has a serious impact on the structural component of the materials.
A stable, robust foam body is often in demand, which is seen by many as a benchmark of quality. In structures with very limited space, a porous, loose foam body may be a better choice, which also provides an optimal seal and does not protrude through the structure opening.
The foaming pressure acting during the reaction is a property that develops physically depending on the temperature. Depending on the application, it may make sense to choose materials with low foaming properties.
Materials differ in their chemical composition. Graphite-based materials consist of natural crystal layers. When flakes of graphite with sulfur or nitrogen compounds are exposed to heat, the graphite then splits abruptly and the particles expand to several hundred times their original volume. Phosphate-based materials form a solid phosphorus surface layer when exposed to high temperatures. Silicate-based materials form a hard, ceramic protective layer when exposed and released to high temperatures.
The three factors of substrate, adhesive technology and material must be optimally coordinated. The installation of properly made reactive materials is important for both its function and durability in case of fire. If you have questions about adhesive selection or surface treatment, we will be happy to answer them. You can call us right away or get information via the online contact forms on our website.