Improved thermal stability of methylsilicone resins by compositing with N-doped graphene oxide/Co3O4 nanoparticles

Research Paper

Abstract

Nanoparticles play important roles in enhancing the thermal-resistance of hosting polymer resins. Despite tremendous efforts, developing thermally stable methylsilicone resin at high temperatures is still a challenge. Herein, we report a strategy to increase the activation energy to slow down the decomposition/degradation of methylsilicone resin using synergistic effects between the Co3O4 nanoparticles and the nitrogen doped graphene oxide. The N-doped graphene oxides composited with Co3O4 nanoparticles were prepared by hydrolysis of cobalt nitrate hexahydrate in the presence of graphene oxide and were incorporated into the methylsilicone resin. Two-stage decompositions were observed, i.e., 200–300 and 400–500 °C. The activation energy for the low temperature region was enhanced by 47.117 kJ/mol (vs. 57.76 kJ/mol for pure resin). The enhanced thermal stability was due to the fact that the nanofillers prevented the silicone hydroxyl chain ends ‘‘biting’’ to delay the degradation. The activation energy for high-temperature region was enhanced by 11.585 kJ/mol (vs. 171.95 kJ/mol for pure resin). The nanofillers formed a protective layer to isolate oxygen from the hosting resin. The mechanism for the enhanced thermal stability through prohibited degradation with synergism of these nitrogen-doped graphene oxide nanocomposites was proposed as well.

Graphical Abstract

Keywords

Methylsilicone resin N-doped graphene oxide Co3O4 nanoparticles Activity energy Synergy effect Nanocomposite materials 

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Copyright information

© Springer Science+Business Media Dordrecht 2016

Authors and Affiliations

  • Bo Jiang
    • 1
  • Liwei Zhao
    • 1
  • Jiang Guo
    • 2
  • Xingru Yan
    • 2
  • Daowei Ding
    • 2
  • Changcheng Zhu
    • 1
  • Yudong Huang
    • 1
  • Zhanhu Guo
    • 2
  1. 1.Polymer Materials and Engineering DepartmentHarbin Institute of TechnologyHarbinPeople’s Republic of China
  2. 2.Integrated Composites Laboratory (ICL) Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleUSA

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