In the pursuit of efficient thermal insulation materials, aerogel thermal insulation sheets stand out with their excellent performance and become an ideal choice in many fields.
       Aerogel thermal insulation sheets mainly use aerogel as the core material. Aerogel has a unique nanoporous structure with extremely high porosity. This structure gives it extremely low thermal conductivity, which is the basis of the excellent thermal insulation performance of aerogel thermal insulation sheets. Usually, in order to enhance its mechanical properties and facilitate use, aerogel is compounded with other materials, such as fiber-reinforced materials, to make thermal insulation sheets with a certain shape and strength.
       Its thermal insulation principle is based on the multiple obstacles to heat transfer caused by the nanoporous structure of aerogel. Heat transfer mainly includes three ways: heat conduction, heat convection and heat radiation. The nanopores inside the aerogel greatly limit the movement of gas molecules and reduce heat convection; the low thermal conductivity of the solid skeleton effectively reduces heat conduction; at the same time, it has a strong scattering and absorption ability for infrared radiation, which inhibits thermal radiation. Through the synergistic effect of these three methods, aerogel thermal insulation sheets can effectively prevent heat transfer.
       The performance advantages of aerogel thermal insulation sheets are significant. First of all, the thermal insulation performance is far superior to traditional thermal insulation materials. Under the same thermal insulation requirements, it can be made thinner, thus saving space. Secondly, it is light in weight and will not bring too much burden to the equipment used, especially in weight-sensitive application scenarios. Furthermore, aerogel thermal insulation sheets have good chemical stability and temperature resistance, can work stably in a variety of harsh environments, and have a long service life.
       In practical applications, aerogel thermal insulation sheets are widely used. In the field of electronic equipment, such as mobile phones and computers, it can effectively reduce the temperature of heat-generating components such as chips, and improve the operating stability and service life of equipment. In new energy vehicles, it is used for thermal insulation of battery packs to prevent battery overheating and ensure battery safety and performance. In the field of aerospace, its light weight and high-efficiency thermal insulation properties make it a key material for spacecraft thermal protection systems, resisting the impact of extreme temperature environments on spacecraft. With the continuous advancement of technology, aerogel thermal insulation sheets will play an important role in more fields, bringing more convenience and innovation to people's lives and the development of various industries.