Basic characterization of the CF-PEKK prepreg and laminates for low temperature applications

Basic characterization of the CF-PEKK prepreg and laminates for low temperature applications


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Abstract. This paper investigates a carbon fibre-reinforced polyetherketoneketone (CF-PEKK) thermoplastic composite used for low-temperature applications like hydrogen tank applications. The degree of crystallinity of the prepreg as received first and then consolidated after hot press has been investigated. The melting temperature and glass transition, as well as the melting enthalpy and degree of crystallinity, were also studied by DSC (differential scanning calorimetry). The fibre volume fraction and void content after consolidation have been measured by acid digestion and an optical microscopy image analysis. Thermomechanical analysis (TMA) was also used in order the coefficients of thermal expansion (CTE) to be determined. Tensile and compressive Dynamic Mechanical Analysis (DMA)test were performed. Storage modulus, loss modulus, and Tan δ relationship have thus been analysed. Multifrequency DMA experiments have been conducted in order to create the master curve thanks to the time-temperature superposition (TTS).

Thermoplastic Composites, Materials Characterization, Thermomechanical Analysis, Dynamic Mechanical Analysis

Published online 4/24/2024, 12 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: POLNIKORN Purith, OLIVIER Philippe, CASTANIÉ Bruno, DOUCHIN Bernard, Basic characterization of the CF-PEKK prepreg and laminates for low temperature applications, Materials Research Proceedings, Vol. 41, pp 399-410, 2024


The article was published as article 45 of the book Material Forming

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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