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2000
Volume 19, Issue 1
  • ISSN: 2212-7976
  • E-ISSN: 1874-477X

Abstract

Introduction

In phase change thermal management systems, the development of magnetic phase change materials offers the possibility of effectively integrating passive and active heat control technologies. The low dispersibility of traditional heat transfer additives, the high interfacial thermal resistance with phase change matrices, and the restricted magnetic response characteristics are some of the current problems that must be resolved.

Methods

To overcome these challenges, this study employed a co-precipitation method to composite magnetic nanoparticles FeO with graphene oxide (GO). The active sites on GO were functionalized with alkyl groups to prepare FeO-modified graphene oxide (FeO-MGO)/paraffin magnetic composite phase change materials. The morphology, structure, chemical composition, and thermal properties of the resulting magnetic composite phase change materials were tested and characterized.

Results

The results indicated that FeO-MGO exhibits good dispersibility in paraffin, which can enhance the thermal conductivity of the phase change material. The thermal conductivity of the composite phase change material with a FeO-MGO mass fraction of 2.0% was measured to be 0.461 W/m·K, representing a 47.3% increase compared to pure paraffin. Additionally, FeO-MGO demonstrated a certain phase change capability, with a phase change enthalpy reaching 70.35 kJ/kg.

Conclusion

The findings of this study are expected to provide technical support for innovative applications of magnetic-controlled phase change thermal management. The emergence of magnetic phase change materials holds the promise of achieving efficient integration of passive and active heat control technologies within phase change thermal management systems. However, several issues still need to be addressed in patents and related research.

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2025-12-21

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Preparation and Characterization of Fe3O4-Modified Graphene Oxide as Heat Transfer Additive for Paraffin Wax Applications
Recent Patents on Mechanical Engineering 19, 90 (2026); https://doi.org/10.2174/0122127976324000241029061830
/content/journals/meng/10.2174/0122127976324000241029061830
/content/journals/meng/10.2174/0122127976324000241029061830
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  • Article Type:     Research Article
Keyword(s): alkyl groups; functionalized graphene oxide; graphene oxide; paraffin; Phase change material; thermal properties

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