Intelligent temperature adjusting material based on radiation cooling and preparation method thereof

Abstract

The invention discloses an intelligent temperature adjusting material based on radiation cooling and a preparation method thereof. The intelligent temperature adjusting material comprises an upper layer and a lower layer, the upper layer is an emitting material layer, the lower layer is a reflecting material layer, the reflecting material layer reflects sunlight and prevents solar radiant heat from entering the intelligent temperature adjusting material, meanwhile, the emitting material layer can make real-time response according to changes of the environment temperature, the emissivity of theemitting material layer is adjusted through reversible phase change, then the emitting power is adjusted, and the temperature control effect is achieved. The temperature of the target object can be kept constant, the problem in the absence of active temperature control equipment is solved, energy conservation can be realized in the presence of temperature control equipment, and the method is an important means for energy conservation, emission reduction and temperature control in the future; and compared with the previous intelligent temperature adjusting material, the product is a compositefilm composed of vanadium dioxide particles and an organic system dispersion matrix, and can maintain good optical properties while the preparation process is simple.

Description

technical field [0001] The invention belongs to the technical field of material science, and in particular relates to an intelligent temperature-regulating material based on radiation cooling and a preparation method thereof. Background technique [0002] The atmosphere is composed of nitrogen, oxygen and water vapor, which acts as a translucent medium for radiative cooling. Thermal radiation from the ground to space is attenuated in most wavelength bands due to the low transmittance of the atmosphere. However, in the 8-13 μm wavelength range, the atmosphere is highly transparent to thermal radiation. Therefore, in theory, any ground object with a high emissivity in the atmospheric window can radiate heat to outer space. A research team used the phase change characteristics of vanadium dioxide materials to design and realize an intelligent solar reflector. Using metal aluminum as a reflector, 1200nm silicon dioxide was grown on metal aluminum by chemical vapor deposition, ...

AI Technical Summary

Problems solved by technology

However, the existing technologies all involve the field of smart windows, and what is adjusted is the sunlight band, that is, the low-temperature state, which allows visible light to pass through and near-infrared rays to heat up the room; the high-temperature state, while maintaining visible light to pass through, Prevent near-infrared rays from penetrating, preventing excess heat from being acquired indoors, and increasing cooling load, but the application field is relatively single

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