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Thermal expansion of graphene composites.

Tipo de material: TextoTextoSeries ; Macromolecules, 42(14), p.5251-5255, 2009Trabajos contenidos:
  • Wang, S
  • Tambraparni, M
  • Qiu, J
  • Tipton, J
  • Dean, D
Tema(s): Recursos en línea: Resumen: Isolated graphene sheets were achieved by graphite intercalation and charge-induced exfoliation. The resultant graphene oxide sheets were incorporated into polymer composites and thermal expansion 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 percent graphene oxide-based composite shows 31.7 percent 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 percent 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.
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Documentos solicitados Documentos solicitados CICY Documento préstamo interbibliotecario Ref1 B-18409 (Browse shelf(Opens below)) Available

Isolated graphene sheets were achieved by graphite intercalation and charge-induced exfoliation. The resultant graphene oxide sheets were incorporated into polymer composites and thermal expansion 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 percent graphene oxide-based composite shows 31.7 percent 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 percent 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.

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