Cyanate Ester Graphene Composites

Abstract

Graphene oxide produced by chemical oxidation formed stable dispersions in LECy cyanate ester matrix and edge functionalized graphite does not. High shear mixing followed by sonication was the best method for graphene oxide dispersion in LECy. Addition of 1 wt% edge-functionalized graphite of LECy did not increase storage modulus but addition of 1 and 2 wt% GO increased storage modulus below the Tg. Diffusion of water in LECy 1 wt% GO was slower than pure LECy polycyanurate but equilibrium uptake was greater. SEM micrographs of composite fractured surfaces suggest that LECy cyanate resin matrix is ot covalently bonded to graphene oxide sheets. LECy 1 wt% GO composite samples showed relatively good dispersion and low void content. Poor dispersion and large voids were present in LECy 5 wt% composites.

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Document Details

Document Type
Technical Report
Publication Date
Mar 29, 2012
Accession Number
ADA571736

Entities

People

  • Andrew J. Guenthner
  • Joseph M Mabry
  • Josiah T. Reams
  • Kevin R. Lamison

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Chemical Vapor Deposition
  • Composite Materials
  • Dispersions
  • Glass Transition Temperature
  • Graphene
  • Graphitic Materials
  • Materials
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Mechanical Properties
  • Military Research
  • Oxidation
  • Oxides
  • Physical Properties

Fields of Study

  • Materials science

Readers

  • Nanocomposite Materials Science
  • Polymer Science and Engineering.
  • Thin Film Deposition Science.

Technology Areas

  • Microelectronics