Properties of toughened RTM composites by structural toughening layer

Peng Zhang, Gang Liu, Xiaolan Hu, Jianwen Bao, Xiaosu Yi

Research output: Journal PublicationArticlepeer-review

21 Citations (Scopus)

Abstract

Based on ex-situ toughening concept, the polyamide nonwoven fabric(PNF) with high porosity was chosen as structural toughening layer, and the U3160 carbon fiber reinforced epoxy 3266 composites toughened by interlaminar PNF(U3160-PNF/3266) was fabricated via RTM process. The properties of U3160-PNF/3266 composite were investigated as well as toughening mechanism. The results indicate that the PNF still keep original structure in composites interlaminar, and formed a unreactional co-continuous structure with based resin which show remarkable toughening effect. Mode I fracture toughness (G IC) and mode II fracture toughness (G IIC) of the U3160-PNF/3266 composites are 1.1 times and 1.4 times higher respectively than that of the control system, and the compression after impact (CAI) increase from 212 MPa to 281 MPa.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalFuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
Volume29
Issue number4
Publication statusPublished - Aug 2012
Externally publishedYes

Keywords

  • Composites
  • Interlaminar properties
  • Interlaminar toughen
  • Nonwoven fabric
  • RTM

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry (all)
  • Condensed Matter Physics
  • Mechanics of Materials

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