With the continuous development of science and technology, a variety of new thermal insulation materials came into being, providing more choices for our life and construction fields. Among them, aerogels, as a material with unique structural characteristics and application advantages, have gradually attracted the attention of the construction industry, especially the prospect and possibility of thermal insulation.

First, the basic characteristics of aerogel
Aerogel is usually prepared by sol-gel method, which replaces the liquid phase in the gel with gas and forms a nanoscale porous solid material. It has many remarkable characteristics, such as high porosity, low thermal conductivity, low density, high light transmittance, sound absorption and so on. These characteristics make aerogels have great advantages in thermal insulation.

Second, the application advantages of aerogel in the field of construction
1, efficient thermal insulation
The nanoporous structure of aerogel can effectively prevent heat conduction, so it has excellent thermal insulation performance. Studies have shown that when the thickness is only 1~5mm, the thermal conductivity of aerogel can be reduced to 0.03W/(m·K), which is much lower than the thermal conductivity of traditional thermal insulation materials. This means that the use of aerogel as a building insulation material can greatly improve the energy efficiency of buildings and reduce energy consumption.
2. Light weight and convenient construction
The density of aerogel is extremely low, so handling and installation are relatively easy, and the skill requirements for construction personnel are not high. At the same time, due to its excellent thermal insulation performance, it can make the building structure more lightweight, which is conducive to the overall design and construction of the building.
3, good light and air permeability
Aerogel has high light and air permeability, which makes it an ideal building thermal insulation material. While ensuring good insulation effect, aerogel can fully allow light into the room, improve the indoor lighting effect, while maintaining air circulation, improve living comfort.

Third, the future development of aerogel
With the advancement of science and technology and the improvement of environmental protection awareness, aerogels, as a new type of building thermal insulation material, have broad development prospects. In the future, the application field of aerogel will be more extensive, not only in the field of construction has a wide range of applications, but also in new energy, environmental protection and other emerging fields to show great potential. At the same time, with the continuous innovation and improvement of preparation technology, the preparation process of aerogel will be more environmentally friendly, efficient and low-cost, and further promote the large-scale application of aerogel.

Iv. Summary
As a kind of material with unique structural characteristics and application advantages, aerogel has great application potential in the field of building thermal insulation. With the continuous development of science and technology, we have reason to believe that aerogel will play an increasingly important role in the future construction field and other fields, bringing more convenience and benefits to people's production and life.