TECAPOWDER P84 polyimide is a non-meltable polymer that improves the performance of grinding wheels in demanding applications. It is based on P84® by Evonik. The binding materials require high strength at elevated temperatures. These requirements are met by polyimides due to their chemical structure.
Polyimide bindings, in general, offer highest thermal stability in comparison with other polymers such as polyamides, epoxies and polyetherketones. This together with its extremely high strength make TECAPOWDER P84 polyimide a natural choice for the binding resin in high quality diamond grinding wheels and which eliminate practically all other potential polymers except polyimides.
P84 resin bonded wheels are capable of very high grinding speeds and, in many cases, outlast standard epoxy or phenolic wheels by a factor of 2.