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Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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RGO-Coated Polyurethane Foam/Segmented Polyurethane Composites as Solid-Solid Phase Change Thermal Interface

Cong Zhang1, Zhe Shi1, An Li1

  • 1Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China.

Polymers
|December 19, 2020
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Summary
This summary is machine-generated.

Researchers developed a novel thermal interface material (TIM) using reduced graphene oxide-coated polyurethane foam. This advanced material significantly enhances heat transfer for effective thermal management.

Keywords:
compositesinterfacial wettabilityreduced graphene oxidesegmented polyurethanesolid–solid phase changethermal conductivitythermal interface material

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Thermal interface materials (TIMs) are essential for efficient heat dissipation from electronic components.
  • Improving thermal conductivity and interfacial contact is critical for advanced thermal management solutions.
  • Phase change materials offer unique thermal transport properties but require careful formulation.

Purpose of the Study:

  • To develop a high-performance TIM with solid-solid phase change properties.
  • To enhance both thermal conductivity and interfacial wettability of the TIM.
  • To investigate the effect of reduced graphene oxide (rGO) on the properties of segmented polyurethane (SPU) composites.

Main Methods:

  • Fabrication of rGO-coated foam (rGOF) via self-assembly.
  • Synthesis of segmented polyurethane (SPU) through in situ polymerization.
  • Preparation of rGOF/SPU composites for TIM applications.

Main Results:

  • The synthesized pure SPU and rGOF/SPU composites demonstrated solid-solid phase change properties.
  • Materials exhibited suitable phase change temperatures, high latent heat, and excellent wettability without leakage.
  • rGOF/SPU composite showed a 63% increase in thermal conductivity compared to pure SPU at 0.8 wt.% rGO.

Conclusions:

  • The developed rGOF/SPU composite functions effectively as a TIM with superior thermal performance.
  • The material shows significant potential for advanced thermal management applications.
  • Incorporating rGO into SPU foam is a promising strategy for enhancing TIM properties.