Assessment of induction heated mould technologies for high-temperature thermoplastic composite manufacturing
Résumé
The performances of Cage System® and 3iTech® moulds designed by Roctool for the thermo- compression moulding of high temperature composites have been investigated and compared to a conventional hot press equipped with cartridge heaters. The Cage System® technology demonstrated its capacity to achieve rapid temperature cycles with heating and cooling rates higher than 200°C.min-1, while allowing significant electricity energy saving. However, this heating technology induces critical thermal deformation of the moulding surfaces at high temperature. Advanced design is thus required for obtaining high thermal homogeneity and for satisfying dimensional accuracy of structural composites. As for the 3iTech® technology, the studied mould exhibited higher thermal performances than a conventional press with a heating rate up to 40°C.min-1 and a temperature homogeneity on the moulding surface lower than 10°C. Moreover, the carbon/PEEK laminate fabricated with this mould satisfied the dimensional tolerance for aerospace applications and therefore represent an interesting alternative to conventional heating systems.
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16-09-01 - Article Techno Inductive Composite TP.pdf (3.15 Mo)
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