Recycling of Thermoplastic CFRP with Electrodynamic Fragmentation
M. Roux, Fachhochschule Nordwestschweiz, Windisch, Switzerland
N. Eguémann, Cross Composite AG, Steckborn, Switzerland
L. Giger, C. Dransfeld
Fachhochschule Nordwestschweiz, Windisch, Switzerland
By having the ability to re-melt the matrix, thermoplastic carbon fibre reinforced polymers (CFRP) are
interesting candidates for recycling. A novel approach to separate thermoplastic CFRPs into fragments using electrodynamic fragmentation (EDF) is presented. The method was applied to a complex structural part which was made from unidirectional chopped tapes of 20 mm length (PEEK/AS4 55 Vol%) using a non-isothermal compression moulding cycle. The specimens made with chopped tapes were subsequently dissociated in a high voltage fragmentation lab unit. The ultimate load the parts made with recycled thermoplastic composites were comparable to the ones made from virgin chopped tapes with a reduction of only 17% of the maximal strength . It was noted that smaller fragments considerably reduce the coefficient of variation of the ultimate strength
while lowering the mean value to a limited extend only.
ITHEC 2016 Manuscript C1
Publication date: 01/10/2016
Manuscript C1 published in Conference Proceedings ITHEC 2016
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