Effect of poly(ether ether ketone) degradation on commingled fabrics consolidation - Archive ouverte HAL Access content directly
Journal Articles Composites Part A: Applied Science and Manufacturing Year : 2021

Effect of poly(ether ether ketone) degradation on commingled fabrics consolidation

(1) , (1) , (2) , (1)
1
2
Feuillerat Lisa
Olivier de Almeida
Fabrice Schmidt

Abstract

The effects of poly(ether ether ketone) (PEEK) degradation on consolidation of commingled preforms have been investigated. Contrary to what could be expected, under the same processing conditions, consolidation of the preforms systematically results in a high porosity content, above 10%. Fourier Transform Infrared spectrophotometry (FTIR) and Gel Permeation Chromatography (GPC) have shown small molecular structure modifications of PEEK yarns compared to the raw material. These modifications have been attributed to sizing of PEEK filament. Calorimetric (DSC) and rheological analyses have demonstrated that the presence of sizing in the preforms have huge consequences on the degradation kinetics. The crystallization temperature decreases and the viscosity increases significantly. This acceleration of the degradation kinetics is the reason of the poor consolidation behavior during composite manufacturing. The conditions of melt-spinning under which the neat PEEK is transformed into filament are therefore a key factor of PEEK degradation.
Fichier principal
Vignette du fichier
Effect-of-poly-degradation (1).pdf (2.57 Mo) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-03247552 , version 1 (23-06-2021)

Identifiers

Cite

Feuillerat Lisa, Olivier de Almeida, Fontanier Jean-Charles, Fabrice Schmidt. Effect of poly(ether ether ketone) degradation on commingled fabrics consolidation. Composites Part A: Applied Science and Manufacturing, 2021, 149, pp.1-9/106482. ⟨10.1016/j.compositesa.2021.106482⟩. ⟨hal-03247552⟩
87 View
47 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More