Thermal Expansion of Graphene Composites Academic Article uri icon

abstract

  • Isolated graphene sheets were achieved by graphite intercalation and charge-induced exfoliation. The resultant graphene oxide sheets were incorporated into polymer composites and thermalexpansion was investigated by a thermo-mechanical analyzer. The test results indicated that inclusion of graphene into composites resulted in low coefficients of thermal expansion (CTEs), and increasing graphene fraction reduced CTEs more significantly. The 5 wt % graphene oxide-based composite shows 31.7% reduction below the glass transition temperature. Preliminary measurement of thermal conductivity also indicated that graphene composites significantly improved the thermal conductivity of polymer matrix. Thermal conductivity of 5% graphene composites showed about 4-fold increment in comparison to the polymer matrix. This finding will provide a solid foundation for graphene-enabled thermal management in microelectronics. © 2009 American Chemical Society.

altmetric score

  • 3

author list (cited authors)

  • Wang, S., Tambraparni, M., Qiu, J., Tipton, J., & Dean, D.

citation count

  • 293

publication date

  • July 2009