PEKK - the interesting PEEK alternative
Our PEKK (polyether ketone ketone) coating processes offer some considerable advantages as compared to the PEEK coating processes. In the coating process, the thermal load of the parts is reduced by 70°C as compared to PEEK. This spares the substrate. Thus, substrates which do not withstand the process temperature of PEEK can also be coated with polyaryletherketone.
The shrinkage stress of PEKK is considerably lower than that of PEEK which allows for the coating of demanding part geometries without problems. The mechanical properties and the high resistance to chemicals are virtually identical with those of PEEK. In contrast, the former properties are to some extent even considerably better.
The new PEKK used by Buser Oberflächentechnik AG is only approved of for direct contact with food according to FDA and EU.