Effect of fibre surface treatment on the mechanical response of ceramic fibre mat-reinforced interpenetrating vinylester/epoxy resins

J. S. Szabó, J. Karger-Kocsis, O. Gryshchuk, T. Czigány

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A vinylester/epoxy (VE/EP ratio=1/1) hybrid resin of interpenetrating network (IPN) structure was reinforced by a needle punched ceramic fibre mat (30 wt%) composed of long discontinuous fibres (length ≤50 mm). The surface chemistry of the ceramic fibres was varied by coating them with various organosilanes resulting in vinyl (VS) and epoxy (ES) functionalities. In addition, mats containing ceramic fibres without (initial sizing removed by burning, B) and with sizing by producer (as received, AR) were involved in this study. The mechanical response of the composites, produced by resin transfer moulding (RTM), was determined in tensile and flexural loading. The mechanical behaviour of the mat-reinforced composites strongly changed as a function of fibre surface treatment. Regarding to stiffness and strength the following ranking was deduced: VS ≥ ES > B > AR. The failure mode of the composites was studied both in situ (using the acoustic emission technique) and post-mortem (fractographic inspection), and discussed.

Original languageEnglish
Pages (from-to)1717-1723
Number of pages7
JournalComposites Science and Technology
Volume64
Issue number10-11
DOIs
Publication statusPublished - Aug 1 2004

Keywords

  • Ceramic fibre
  • Failure
  • Interface
  • Mechanical properties
  • Resin transfer moulding

ASJC Scopus subject areas

  • Ceramics and Composites
  • Engineering(all)

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