Preparation method of microfluidic phase change cooling liquid

By using microfluidic technology to precisely construct phase change microcapsules at the microscale, the problems of easy leakage of phase change materials and uncontrollable microcapsule structure are solved, realizing efficient and continuous preparation of phase change coolant, improving product stability and consistency, and making it suitable for different thermal management needs.

CN122012033AInactive Publication Date: 2026-05-12盛忆镐科技(江苏)有限公司
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Patent Information

Application Number
CN202610157566.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-04
Publication Date
2026-05-12
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

Existing phase change coolant preparation technologies suffer from problems such as easy leakage of phase change materials, uncontrollable microcapsule size and structure, and complex and discontinuous preparation processes.

Method used

Using microfluidic technology, phase change materials, encapsulation precursors, and thermally conductive components are formulated into functional fluids using a microfluidic chip. By precisely manipulating the multiphase fluid, an encapsulation shell is formed at the microscale, enabling the precise construction of phase change microcapsule structures. In-situ curing technology is then used to ensure the density and integrity of the shell.

Benefits of technology

It achieves effective isolation between phase change materials and external base fluids, improves leakage and compatibility issues during long-term use, simplifies the preparation process, improves production efficiency and product consistency, and has good flexibility and adaptability, making it suitable for coolant products with different temperature ranges and thermophysical properties.

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Abstract

The invention discloses a preparation method of a microfluidic phase change cooling liquid, and belongs to the technical field of advanced thermal management material preparation. According to the method, a specific microfluidic flow and functional fluid are designed, and a molten phase-change material fluid, a shell fluid containing curable resin and a heat-conducting filler and a cooling base fluid insoluble in a shell are pumped into a microfluidic chip respectively. In a chip flow channel, under the action of hydrodynamic force and interfacial tension, shell layer fluid wraps phase change material fluid in situ, and monodisperse core-shell liquid drops are formed and dispersed in base fluid. And then guiding the liquid drops to pass through a curing area, so that the shell layer is cured in the flowing process, and a suspension system with the phase change microcapsules dispersed in the base solution is directly obtained. According to the invention, accurate control of the size of the phase change microcapsule and the thickness of the shell layer is realized, and the preparation method of the phase change cooling liquid which is continuous, efficient and controllable in structure is provided.
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