Melt state behaviour of PEEK and processing window interpretation for fast compression moulding process

Abstract : Fast mould heating is nowadays possible by using induction technology for example with the Cage System (R) developed by RocTool. It allows heating and cooling kinetics of about 100 degrees C per minute and new perspectives are thus possible to optimize the compression moulding process of long fibre reinforced thermoplastic composites. Indeed, a high forming temperature may favour polymer creep and so on composite consolidation. Nevertheless, the processing time of PEEK composite above melt temperature must be reduced to a few minutes due to the fast thermal degradation of the matrix. On the other hand, high cooling rates may have negative effect on matrix crystallinity. The proposed procedure consist in performing a few minutes isotherm around 300 degrees C during the fast cooling. It would favour a high degree of crystallinity of PEEK without extending the cycle time.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-01717321
Contributor : Imt Mines Albi Ecole Nationale Supérieure Des Mines d'Albi-Carmaux <>
Submitted on : Monday, February 26, 2018 - 11:20:46 AM
Last modification on : Tuesday, October 22, 2019 - 5:20:43 PM

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  • HAL Id : hal-01717321, version 1

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Emeline Bessard, Olivier de Almeida, Gérard Bernhart. Melt state behaviour of PEEK and processing window interpretation for fast compression moulding process. AMPT 2010 - International conference on Advances in Materials and Processing Technologies, Oct 2010, Paris, France. pp.167-172. ⟨hal-01717321⟩

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