RGO and Three-Dimensional Graphene Networks Co-modified TIMs with High Performances

Area of Science:

• Materials Science
• Nanotechnology
• Thermal Engineering

Background:

• Microelectronic device miniaturization is limited by insufficient heat dissipation.
• Graphene-based epoxy resins show potential for improved thermal performance.
• Limitations exist in using reduced graphene oxide (RGO) and 3D graphene networks (3DGNs) as standalone modifiers.

Purpose of the Study:

• To enhance the thermal conductivity of epoxy resin (ER) using co-modified graphene structures.
• To investigate the synergistic effects of RGO nanosheets and 3DGNs as thermal interface materials (TIMs).
• To assess the stability and mechanical properties of the developed TIMs for practical applications.

Main Methods:

• Co-modification of epoxy resin with reduced graphene oxide (RGO) nanosheets and three-dimensional graphene networks (3DGNs).
• Optimization of RGO reduction degree and the proportion of RGO/3DGNs.
• Evaluation of thermal conductivity, thermal stability, and mechanical properties of the resulting TIMs.

Main Results:

• The synergistic combination of RGO nanosheets and 3DGNs significantly improved thermal conductivity.
• 3DGNs facilitated phonon transport, while RGO enhanced interfacial heat transfer.
• Optimized RGO reduction and RGO/3DGNs proportion yielded superior thermal performance.

Conclusions:

• The developed graphene-co-modified epoxy resin demonstrates excellent thermal conductivity and stability.
• The synergistic approach offers a promising strategy for advanced thermal interface materials.
• These findings indicate strong potential for practical applications in microelectronic thermal management.