Crosslinking of polyaryletherketones

A method for production of a crosslinked molded body containing polyaryletherketone (PAEK), the method comprising the steps of

• (a) providing a mixture comprising a PAEK and a crosslinker,
• (b) preparing a molded body from the mixture, and
• (c) thermally treating the molded body at a temperature at which PAEK crosslinks, thereby obtaining the crosslinked molded body, and
• wherein the crosslinker is a di(aminophenyl) compound comprising two aminophenyl rings, wherein the two aminophenyl rings are joined together via an aliphatic group having a carbocyclic group, wherein the crosslinker is a compound of general formula (I):
• wherein R1 and R2 are independently selected from H, substituted or unsubstituted alkyl having 1 to 20 C atoms, substituted or unsubstituted aryl having 5 to 12 C atoms, F, and Cl;
• and wherein Z is the aliphatic group having the carbocylclic group.