Melt state behaviour of PEEK and processing window interpretation for fast compression moulding process
- Universite de Toulouse, INSA, UPS, Mines Albi, ISAE, ICA (Institut Clement Ader), Campus Jarlard, F-81013 Albi cedex 09 (France)
Fast mould heating is nowadays possible by using induction technology for example with the Cage System registered developed by RocTool. It allows heating and cooling kinetics of about 100 deg. 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 deg. C during the fast cooling. It would favour a high degree of crystallinity of PEEK without extending the cycle time.
- OSTI ID:
- 21513166
- Journal Information:
- AIP Conference Proceedings, Vol. 1315, Issue 1; Conference: AMPT2010: International conference on advances in materials and processing technologies, Paris (France), 24-27 Oct 2010; Other Information: DOI: 10.1063/1.3552434; (c) 2010 American Institute of Physics; ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CALORIMETRY
COMPOSITE MATERIALS
COMPRESSION
COOLING
HEATING
HEATING RATE
ISOTHERMS
MELTING
MOLDING
QUENCHING
THERMAL DEGRADATION
THERMOPLASTICS
FABRICATION
MATERIALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
PLASTICS
POLYMERS
SYNTHETIC MATERIALS