Improving the Compression Strength after Impact of RTM Composites by Interlaminar Thermoplastic Nonwoven Fabric

Abstract:

Based on the “ex-situ” toughening concept, thermoplastic nylon (PA) nonwoven fabric with high porosity was chosen as the toughening layer, and the interlaminar toughened composites were fabricated via RTM process. Compression strength after impact (CAI) properties were investigated as well as the toughening mechanism. The results indicated that there is no bicontinuous phase structures formed by reaction-induced phase decomposition and inversion. The PA nonwoven fabrics still kept the original structure in composites interlaminar, and formed a macroscopical bicontinuous structure with the matrix resin, which also showed remarkable toughening effect. The CAI value increased from 212MPa to 281MPa.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 12-16
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.12
• Online since: June 2012
• Authors: Peng Zhang, Gang Liu, Xiao Lan Hu, Wen Ming Zhao, Xiao Su Yi
• Keywords: Composite, Interlaminar Properties, Interlaminar Toughen, Nonwoven Fabrics, RTM

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