Temperature-adaptive radiation temperature control film and preparation method thereof
By employing a high-loss antenna structure and doping elements to regulate the vanadium dioxide phase transition temperature in a temperature-adaptive radiation-controlled thin film, the problems of high production cost and low thermal emissivity modulation depth are solved, achieving more efficient thermal infrared emissivity modulation and energy-saving effects, making it suitable for large-scale production and application.
Patent Information
- Application Number
- CN202410674603.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-27
- Publication Date
- 2025-11-28
AI Technical Summary
Existing temperature-adaptive radiation-controlled films have high production costs, low thermal emissivity modulation depth, and limited solar absorptivity control range, making mass production impossible. This results in overcooling in low-temperature environments and increased energy consumption in heating systems.
The structure employs micro-units arranged in an array within the functional layer, with through-holes running vertically through each micro-unit to form a high-loss antenna structure. The phase transition temperature of vanadium dioxide is controlled by doping elements, a protective layer is added to adjust the solar absorption rate, and a hollow structure is formed to reduce the amount of vanadium dioxide used.
It achieves a deeper modulation of thermal infrared emissivity over a wider wavelength range, reduces costs, is suitable for large-scale production, and increases thermal infrared emissivity by more than 30% at high temperatures and reduces it by more than 30% at low temperatures, saving annual energy consumption of heating and cooling temperature control systems.