Adequate dispersion and orientation randomness of engineering fiber as well as consistent properties have been issues for the typical batch solution processing of ceramic formulations. It was thought that the gentle and efficient mixing of the RingExtruder would allow these formulations to be compounded continuously as solids and not as a weak solution requiring large amounts of water to be removed.

Solids formulations containing high concentrations of very hard ceramic particles and fiber as well as small amounts of organic and inorganic binders were fed directly to the RingExtruder. Some of the material was allowed to transfer directly to the inner ring to balance the inner and outer flows for more efficient gentle mixing. The larger surface area of the RingExtruder allowed good control of material temperature to avoid overheating and gelling the formulation. The result was a smooth and pliable extrudate ready for direct fabrication into ceramic products before drying and firing. The fiber bundles were dispersed to individual, randomly oriented fibers as shown in the scanning electron microscope photograph on the right.

Partner with Century

Incorporating a RingExtruder into your operation can result in a quick return on your investment. Our research and engineering staff is ready to explore with you how your products and operations could benefit and to complete trials to quantify your benefits and savings. Contact us to schedule an engineering review of your requirements.