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Practical Science Popularization | Changes in the Insulation Effect of Aerogel at Different Temperatures: Must-see Scenarios

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With the widespread use of aerogel materials, more and more enterprises and individuals are paying attention to their practical application effects. Among them, "whether the insulation effect of aerogel changes under different temperature environments" has become one of the most concerned issues. Here, we bring you practical science popularization, clearly interpreting the changes in the insulation effect of aerogel under different temperatures, and helping you make precise choices of aerogel products suitable for different scenarios. 
The core advantages of aerogel are "lightness, thinness and high efficiency in heat insulation". Its heat insulation property stems from the internal structure of over 90% nano-sized pores. These pores can effectively trap air and block heat transfer. Temperature changes will affect the movement state of air molecules within the pores and the microscopic structure of the material, thereby causing slight fluctuations in the insulation effect. However, these fluctuations vary significantly in different scenarios. Mastering these patterns can maximize the application effect of aerogel. 
Cold chain logistics / low-temperature equipment scenario (-60℃ to 0℃): The insulation effect is stable and can withstand the test of low temperatures. In scenarios such as cold chain logistics, low-temperature storage tanks, and liquid nitrogen equipment, the temperature is always below 0℃ throughout the year. At this time, traditional insulation materials tend to shrink and age, resulting in a significant reduction in insulation effect. However, the nano-porous structure of aerogel does not break down under low temperatures, effectively locking in the stationary air and blocking the transmission of low temperatures. Utzen's special aerogel for low temperatures has a thermal conductivity of only 0.016W/(m·K) at -60℃, and the insulation effect is almost the same as at normal temperatures. It can effectively reduce the energy consumption of cold chain transportation and extend the preservation time at low temperatures. 
Building/Appliance General Scenarios (0℃ to 50℃): The best thermal insulation effect, balancing energy conservation and convenience. This is the most common application scenario for aerogel. Whether it is for insulation of interior or exterior walls in buildings, or for thermal insulation of appliances such as refrigerators, air conditioners, and water heaters, the thermal insulation effect of aerogel reaches its best performance in normal temperature environments. Its thermal conductivity is as low as 0.013-0.018W/(m·K), and its thickness is only 1/5 of that of traditional rock wool. It can achieve efficient insulation, save space, and at the same time, its lightweight feature also reduces the difficulty of construction and installation, making it the preferred material for building energy conservation and appliance upgrades. 
Industrial high-temperature/space environment (50°C to 2000°C): Slight attenuation. Specialized products can be adapted to extreme high temperatures. In industrial kilns, high-temperature pipelines, aerospace engines and other scenarios, the temperature can reach several hundred or even thousands of degrees Celsius. At this time, ordinary aerogels will experience slight attenuation in their thermal insulation effect. However, high-quality heat-resistant aerogels can effectively inhibit the aging of the microstructure through special modification processes, maintaining stable thermal insulation performance. Utzson's heat-resistant aerogel adopts an "ene-tile" composite structure, with half being ceramics and half being graphene. It can maintain 99% elastic strain at an extreme temperature of 2000°C and the thermal conductivity attenuation is controlled within 5%. It perfectly meets the thermal insulation requirements of extreme high-temperature scenarios. 
It should be noted that the temperature adaptability of the insulating effect of aerogel mainly depends on the formulation and production process of the product. Inferior aerogel is prone to structural damage and insulation failure in scenarios with significant temperature variations. In the field of aerogel for many years, through advanced production processes and strict quality control, various aerogel products developed can be adapted to a wide temperature range of -196℃ to 2000℃, meeting the insulation requirements of different industries and ensuring efficient insulation in every application scenario.

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