Resin Transfer molding of High-Fluidity Polyamide-6 with modified Glass-Fabric preforms

Colin Gomez, Damiano Salvatori, Baris Caglar, Robin Trigueira, Gilles Orange, Véronique Michaud*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

15 Citations (Scopus)
94 Downloads (Pure)

Abstract

In Resin Transfer Molding (RTM), resin precursors of thermoset or, more recently, thermoplastic polymers are generally employed, raising issues related to the chemical reaction taking place during and after part processing. In this study, already polymerized polyamide-6 with low melt-viscosity (~30 Pa·s at 280 °C), is injected at low pressure (<30 bar) in a custom-made mold, so as to impregnate glass fabric preforms via in-plane impregnation. Composite plates were produced using interply spacers acting as flow-enhancers. A three-step impregnation strategy, involving fast in-plane resin injection, a successive saturation step through transverse flow, followed by further micro-saturation caused by the collapse of the spacers, ensured industrially relevant impregnation kinetics. The influence of the spacer, the saturation time, pressure and temperature on the process kinetics and part quality were evaluated with three-point bending tests as well as microstructural analyses. Optimum processing parameters were identified and scaled up for a given part geometry.

Original languageEnglish
Article number106448
Number of pages13
JournalComposites Part A: Applied Science and Manufacturing
Volume147
DOIs
Publication statusPublished - 2021

Keywords

  • A. Thermoplastic resin
  • B. Polymer-matrix composites (PMCs)
  • E. Preforming
  • E. Resin transfer molding (RTM)

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