Modifying the carbon fiber-epoxy matrix interphase with silicon dioxide nanoparticles

Wenzhen Qin, Frederic Vautard, Per Askeland, Junrong Yu, Lawrence Drzal

Research output: Contribution to journalArticle

  • 28 Citations

Abstract

Nanoparticle modification of the carbon fiber-epoxy interface was investigated by depositing silicon dioxide (SiO2) nanoparticles on the surface of carbon fibers (CFs) using a conventional sizing process by immersing CFs tows in a SiO2 nanoparticle suspension. The surface density of the nanoparticles and the uniformity of their dispersion were characterized by scanning electron microscopy. CF-epoxy composites were fabricated to study the effect of the SiO2 nanoparticle coating on the CF-epoxy composite interfacial properties. Interfacial adhesion was assessed by measuring the interfacial shear strength (IFSS) with the single fiber fragmentation test. A 44% improvement of the IFSS was obtained with a SiO2 relative concentration of 1.3 wt%, compared with non-coated CFs. This increase was the result of an increase of the shear modulus of the matrix in the interphase region caused by the presence of the SiO2 nanoparticles. Coating CFs with SiO2 nanoparticles has been shown to be a simple, scalable, and cost effective method to increase the interfacial mechanical properties in CF-epoxy composites.

LanguageEnglish (US)
Pages2457-2465
Number of pages9
JournalRSC Advances
Volume5
Issue number4
DOIs
StatePublished - 2015

Profile

Silicon Dioxide
Carbon fibers
Silica
Nanoparticles
Shear strength
Composite materials
Coatings
carbon fiber
Suspensions
Adhesion
Elastic moduli
Mechanical properties
Scanning electron microscopy
Fibers
Costs

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Modifying the carbon fiber-epoxy matrix interphase with silicon dioxide nanoparticles. / Qin, Wenzhen; Vautard, Frederic; Askeland, Per; Yu, Junrong; Drzal, Lawrence.

In: RSC Advances, Vol. 5, No. 4, 2015, p. 2457-2465.

Research output: Contribution to journalArticle

Qin, W, Vautard, F, Askeland, P, Yu, J & Drzal, L 2015, 'Modifying the carbon fiber-epoxy matrix interphase with silicon dioxide nanoparticles' RSC Advances, vol. 5, no. 4, pp. 2457-2465. DOI: 10.1039/c4ra11878b
Qin, Wenzhen ; Vautard, Frederic ; Askeland, Per ; Yu, Junrong ; Drzal, Lawrence. / Modifying the carbon fiber-epoxy matrix interphase with silicon dioxide nanoparticles. In: RSC Advances. 2015 ; Vol. 5, No. 4. pp. 2457-2465
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