Insulating heat-dissipating and live visualizing three-dimensional hybrid material and preparation method thereof

By constructing a three-dimensional covalent hybrid network of h-BN-CNC-ZnS:Cu, the problem of poor interfacial compatibility between high thermal conductivity inorganic fillers and organic polymer matrices is solved, achieving efficient heat conduction and radiative heat dissipation, improving the insulation strength and weather resistance of power equipment, and making it suitable for long-term outdoor operation of power equipment.

CN121895860BActive Publication Date: 2026-06-26XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2026-03-23
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

In the prior art, the poor interfacial compatibility between high thermal conductivity inorganic fillers and organic polymer matrices leads to a decrease in interfacial polarization effect and dielectric breakdown strength. Furthermore, electroluminescent materials are prone to hydrolysis in humid environments, making it difficult to meet the insulation and heat dissipation requirements of power equipment for long-term outdoor operation.

Method used

A three-dimensional covalent hybrid network, h-BN-CNC-ZnS:Cu, was constructed. An alumina insulating layer was coated onto the phosphor surface via a fluidized bed gas-phase reaction. The interface was then modified with a silane coupling agent to form a dense three-dimensional covalent network. This network was dispersed in a polymer matrix to achieve efficient heat conduction and radiative heat dissipation.

Benefits of technology

It significantly improves the insulation strength and weather resistance of the material, reduces the interfacial thermal resistance, enhances the electric field induction sensitivity and luminescence uniformity, and ensures the safety and long-term stability of the external insulation of high-voltage power equipment.

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Abstract

The application discloses an insulating heat-dissipating and electrified visualized three-dimensional hybrid material and a preparation method thereof, and belongs to the technical field of functional composite materials. The method comprises the following steps: preparing hexagonal boron nitride with carboxyl on the edge and nanofiber crystals with amino on the surface; growing an alumina insulating layer on the surface of sulfide fluorescent powder by using a gas phase reaction process, and performing surface modification by using a silane coupling agent containing an acid anhydride group; then, a three-dimensional covalent hybrid network with hexagonal boron nitride as a node, nanofiber crystals as a framework and modified fluorescent particles dispersed in the framework is constructed through a chemical grafting reaction. The structure is beneficial to reducing the interfacial thermal resistance between the filler and the matrix, and improving the agglomeration phenomenon of the functional filler; the dense insulating layer on the surface is helpful to improving the dielectric strength and weather resistance of the material. The prepared material has both passive radiation heat dissipation and electric field induced light emitting functions in the polymer matrix, and is suitable for power equipment state monitoring.
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Citation Information

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