Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide

Yanjun Jean Wan, Li Xiu Gong, Long Cheng Tang, Lian Bin Wu, Jian Xiong Jiang

Research output: Contribution to journalArticle

225 Citations (Scopus)

Abstract

In this work, the effects of as-produced GO and silane functionalized GO (silane-f-GO) loading and silane functionalization on the mechanical properties of epoxy composites are investigated and compared. Such silane functionalization containing epoxy ended-groups is found to effectively improve the compatibility between the silane-f-GO and the epoxy matrix. Increased storage modulus, glass transition temperature, thermal stability, tensile and flexural properties and fracture toughness of epoxy composites filled with the silane-f-GO sheets are observed compared with those of the neat epoxy and GO/epoxy composites. These findings confirm the improved dispersion and interfacial interaction in the composites arising from covalent bonds between the silane-f-GO and the epoxy matrix. Moreover, several possible fracture mechanisms, i.e. crack pinning/deflection, crack bridging, and matrix plastic deformation initiated by the debonding/delamination of GO sheets, were identified and evaluated.

Original languageEnglish (US)
Pages (from-to)79-89
Number of pages11
JournalComposites Part A: Applied Science and Manufacturing
Volume64
DOIs
StatePublished - Jan 1 2014

Fingerprint

Silanes
Graphite
Oxides
Graphene
Mechanical properties
Composite materials
Cracks
Covalent bonds
Debonding
Delamination
Fracture toughness
Plastic deformation
Thermodynamic stability
Elastic moduli

Keywords

  • A. Polymer-matrix composites (PMCs)
  • B. Mechanical properties
  • B. Microstructures
  • E. Surface treatments

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials

Cite this

Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide. / Wan, Yanjun Jean; Gong, Li Xiu; Tang, Long Cheng; Wu, Lian Bin; Jiang, Jian Xiong.

In: Composites Part A: Applied Science and Manufacturing, Vol. 64, 01.01.2014, p. 79-89.

Research output: Contribution to journalArticle

Wan, Yanjun Jean ; Gong, Li Xiu ; Tang, Long Cheng ; Wu, Lian Bin ; Jiang, Jian Xiong. / Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide. In: Composites Part A: Applied Science and Manufacturing. 2014 ; Vol. 64. pp. 79-89.
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