Servizio Comunitario di Informazione in materia di Ricerca e Sviluppo - CORDIS

Assessment of the manufacturing process of continuous glass fibre reinforced thermoplastics

The impregnation of prepregs has been improved and a new dielectric heating process has been developed successfully for polyethyleneterephthalate (PET) and polyetherimide (PEI) composites. The process has good potential for polyamide-6,6 (PA66) composites, but needs further investigation. From the durability results it appeared that the consolidation phase after the heating step needs more consideration in future work.

A lot of data has been produced on the durability of the various materials under different environmental and mechanical loads. They will be useful in assessing the behaviour of the different materials in practical use.

PA66 and PEI composites appear to be suitable materials for temperatures up to 60 C in humid environments. Only PEI composite can stand higher temperatures and more severe environments such as acidic solutions.

PET composite is not suitable as a construction materials in practical applications where a humid or corrosive environment occurs.

The processing steps and the behaviour of the materials in different environments under different mechanical loadings such as creep and fatigue have been modelled. Software has been developed, which makes it possible to integrate design tools. This leads to predictions of environmental behaviour and durability as a function of the manufacturing route.

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