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Content archived on 2024-04-15

DEVELOPMENT OF CONTINUOUS CARBON FIBRE REINFORCED THERMOPLASTICS AND THEIR PROCESSING FOR COMPOSITE COMPONENTS

Objective


The processing of fibres for use in fibre impregnated thermoplastic (FIP) has been improved (ie weaving technology and consolidation). Fibre diameters have been reduced and sheath/powder ratios have been optimised.

Impregnation of fibres with resins has been improved through improving the wetting. This results in better mechanical properties in the final laminate products.

FIT and solvent technologies have been mastered. Tests satisfied reinforcing conditions and produced fully tested laminates of specific lay-up conditions.

The laminates were tested as to their ability to be hot formed and bonded by various techniques in representative component geometrics. High frequency (HF) bonding proved to be the most promising of the bonding techniques.

Both materials were also tested dynamically and in terms of their fracture toughness and interlaminar shear.

Laminates of both types of materials in superplastic forming mode were tested and their mechanical and ageing characteristics assessed.
FIBRE COMPOSITES WITH A REACTING MATRIX SYSTEM ("THERMOSETS") ARE USED IN A WIDE RANGE OF TECHNICAL APPLICATIONS. VERY FREQUENTLY EPOXY RESINS ARE USED AS A MATRIX WHICH HAVE SEVERE DISADVANTAGES SUCH AS LOW RUPTURE ELONGATION.
A NEW GENERATION OF FIBRE COMPOSITE THERMOPLASTIC MATERIALS HAS NEVERTHELESS BEEN PRODUCED WHICH CAN BE FULLY EXPLOITED SINCE HIGH RUPTURE ELONGATION OF THE THERMOSPLASTIC MATRIX OCCURS, UNLIKE EPOXY RESINS.

THE OBJECTIVES OF THE PROJECT ARE THE DEVELOPMENT OF A CONTINUOUS SHEET MATERIAL MADE FROM CARBON FIBRES INCORPORATED IN A THERMOPLASTIC MATRIX, AND THE DEVELOPMENT OF A SUITABLE PROCESS TECHNOLOGY FOR MANUFACTURING COMPOSITE COMPONENTS.

THERE IS A BROAD DEMAND FOR SUCH COMPONENTS ESPECIALLY IN THE AIRCRAFT INDUSTRY, BUT ALSO IN MECHANICAL AND ELECTRICAL ENGINEERING.

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Topic(s)

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Call for proposal

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Funding Scheme

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CSC - Cost-sharing contracts

Coordinator

GERMAN AEROSPACE CENTRE
EU contribution
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Total cost

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Participants (3)

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