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Cure monitoring of CFRP composites by dynamic mechanical analyser |
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| Affiliation: | 1. Methods for Structural Applications and Processes, Cenaero, Rue des Frères Wright 29, B-6041 Gosselies, Belgium;2. e-Xstream Engineering, MSC Software, Rue Emile Francqui 9, B-1435 Mont-Saint-Guibert, Belgium;3. Any-Shape, Rue de la Digue 37, B-4400 Flémalle, Belgium;4. Institute of Mechanics, Materials and Civil Engineering, Université catholique de Louvain, Place Sainte Barbe 2, B-1348 Louvain-la-Neuve, Belgium;5. Institute of Condensed Matter and Nanosciences, Université catholique de Louvain, Croix du Sud 1, B-1348 Louvain-la-Neuve, Belgium;1. Department of Civil Engineering, University of Moratuwa, Moratuwa, Sri Lanka;2. School of Urban Development, Queensland University of Technology, Brisbane, Queensland 4000, Australia |
| Abstract: | The cure characteristics of carbon/MTM44-1 epoxy composite prepreg and neat MTM44-1 epoxy resin are monitored using a dynamic mechanical analyser (DMA). This study also assesses whether the simple containment device recommended by the DMA manufacturer for powder and gel is suitable for prepregs. The device is a disposable 0.1-mm thick stainless steel pocket. The cure behaviour of the packaged materials is compared with that of the unpackaged prepreg. All the samples are cured following the manufacturer's 180°C-isothermal schedule with heating rates of 2 °C/min and 5 °C/min. The tests highlight that: (i) the cure of composite prepregs and resin can be monitored using a DMA; (ii) the stainless steel pocket does not influence the cure of the prepreg and resin; and (iii) the softening and melting of the uncured resin, the resin low viscosity state and the subsequent gelation-vitrification-solidification of the resin are detected with this method. |
| Keywords: | Composite Curing DMA Gelation Vitrification Dynamic mechanical analysis |
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