Silica-alumina Spherical Shape

Product Description

The spherical shape means that it takes less resin, binder, water etc to wet out the surface of cenospheres than any other shaped filler. This results in low resin or binder demand which in turn allows high solids formulations, lower shrinkage and often lower cost.
Spherical fillers exhibit excellent flow and are easy to spray, pump, trowel etc. Spherical fillers also reduce shrinkage not only because they allow lower binder contents but directly as a result of their shape. At high concentrations, the spheres are packed together but find it difficult to get closer together in the way that irregular shaped fillers can during shrinkage of the binder, evaporation of solvent or water. Spheres therefore help maintain the volume of the original product and as such are excellent fillers for crack and joint compounds, sealants etc.