Thermomechanical enhancement of fiber composites with carbon nanoparticles

Isaac M Daniel, Jeong Min Cho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The objective of this study was to enhance the matrix-dominated thermomechanical properties of carbon/epoxy composites by incorporating carbon nanoparticles in the matrix. The materials used were DGEBA epoxy as the basic resin, carbon nanoplatelets, and multi-wall carbon nanotubes. With the latter, a block copolymer dispersant was used to optimize dispersion of the nanotubes. Preforms used were unidirectional carbon fibers (AS4) and five-harness satin weave carbon fabric (AGP370-5H, Hexcel Corp.). Matrix-dominated thermomechanical properties measured were glass transition temperature, compressive modulus and strength, interlaminar shear strength and in-plane shear properties. Several batches of composite materials were processed and evaluated. They included reference carbon/epoxy composites without nanoparticles, unidirectional carbon/epoxy with carbon nanoplatelets, and carbon fabric/epoxy composites with carbon nanotube loadings of 0.5 and 1 wt%, with and without a copolymer dispersant. Special processing methods were developed, employing solvent-based high shear mixing and sonication. Significant increases in matrix dominated properties were measured. Micromechanical models were proposed to explain the measured enhancements.

Original languageEnglish (US)
Title of host publicationSociety for Experimental Mechanics - 11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
Pages637-647
Number of pages11
Volume2
StatePublished - Dec 22 2008
Event11th International Congress and Exhibition on Experimental and Applied Mechanics 2008 - Orlando, FL, United States
Duration: Jun 2 2008Jun 5 2008

Other

Other11th International Congress and Exhibition on Experimental and Applied Mechanics 2008
CountryUnited States
CityOrlando, FL
Period6/2/086/5/08

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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