Abstract: Anovel controllable cross-linking PEEK was synthesized by introducing thioether moietieSInto PEEK rigid chain, which was combined with merits of thermoplastic material and thermosetting material because it can be processed as a thermoplastic material before cross-linking and be applied as a thermosetting material after being crosslinked by electron beaMAnd heat cross-linking reaction.In this paper, we mainly discussed the rheological behavior of controllable cross-linking PEEK at a dynamic time and 653K.The variation of modulus and complex viscosity and rheological regularity of the materials with different molecular weights were investigated by tracking and monitoring process of cross-linking reaction using retary rheometer.The relationship between structures and properties of controllable cross-linking PEEK was explored.

Key words: Poly(ether ether ketone), Controllable cross-linking, Rheological behavior