Incorporation of silicon dioxide nanoparticles at the carbon fiber-epoxy matrix interphase and its effect on composite mechanical properties

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

Research output: Contribution to journalArticle

Abstract

Functionalized silicon dioxide nanoparticles (nano-fSiO2) were uniformly deposited on the surface of carbon fibers (CFs) using a coating process which consisted of immersing the fibers directly in a suspension of nano-fSiO2 particles and epoxy monomers in 1-methyl-2-pyrrolidinone (NMP). The 0° flexural properties, 90° flexural properties, and Interlaminar shear strength (ILSS) mechanical properties of unidirectional epoxy composites made with nano-fSiO2+epoxy sized carbon fibers, with control fibers, and with epoxy-only sized fibers were measured and compared. An obvious increase of the fiber/matrix adherence strength was obtained with the nano-fSiO2+epoxy coating. The nano-fSiO2+epoxy sized CF/epoxy composites showed a relative increase of 15%, 50%, and 22% in comparison to control fibers, for the Interlaminar shear strength, the 90° flexural strength and the 90° flexural modulus, respectively but little e difference was measured between the different systems for the 0° flexural properties. The observation of the fracture surfaces by scanning electron microscopy of composite fracture confirmed the improvement of the interfacially dependent mechanical properties.

Original languageEnglish (US)
JournalPolymer Composites
DOIs
StateAccepted/In press - 2015

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ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Ceramics and Composites
  • Chemistry(all)

Cite this

Incorporation of silicon dioxide nanoparticles at the carbon fiber-epoxy matrix interphase and its effect on composite mechanical properties. / Qin, Wenzhen; Vautard, Frederic; Askeland, Per; Yu, Junrong; Drzal, Lawrence T.

In: Polymer Composites, 2015.

Research output: Contribution to journalArticle

Qin, Wenzhen; Vautard, Frederic; Askeland, Per; Yu, Junrong; Drzal, Lawrence T. / Incorporation of silicon dioxide nanoparticles at the carbon fiber-epoxy matrix interphase and its effect on composite mechanical properties.

In: Polymer Composites, 2015.

Research output: Contribution to journalArticle

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