Aerogel felt is a kind of high performance thermal insulation material, which is composed of nano silica or metal aerogel as the main material, and is made of fiber felt by special process. Because of its excellent thermal insulation performance, lightweight and environmental protection characteristics, thermal insulation aerogel felt has been widely used in construction, transportation, environmental protection and other fields.

At present, the common types of aerogel insulation felt are silicon-based aerogel felt, silicone aerogel felt, nano aerogel felt, composite aerogel felt, etc. Their performance characteristics are as follows:
1, silicon-based aerogel felt: made of silicates based materials, has excellent thermal insulation and high temperature resistance, suitable for high temperature environment insulation needs.
2, silicone aerogel felt: silicone polymer as the main component, with good flexibility and durability, suitable for the need to bend and complex shape of the air pipe insulation.
3, nano aerogel felt: made of nano aerogel particles, with very low thermal conductivity and excellent thermal insulation performance, suitable for occasions with high insulation requirements.
4, composite aerogel felt: aerogel and other thermal insulation materials (such as glass fiber, rock wool, etc.) composite made to obtain better thermal insulation effect and physical performance balance.
The properties of aerogel insulation felt mainly include insulation effect, strength, permeability and so on. These properties are affected by many factors, such as the type of material, the preparation process, the choice of fiber felt and so on. Among them, the type of material and preparation process have the most significant influence on the insulation effect and strength. In addition, the choice of fiber felt will also have an impact on air permeability. Therefore, the selection of aerogel insulation felt should be made according to the specific needs of the project.