The use of new thermal insulation materials to reduce building energy consumption and reduce environmental pollution occupies an important position in economic and social development. Compared with existing thermal insulation materials, aerogel felt has lower thermal conductivity and better thermal insulation performance. Aerogel sheet felt is thinner and can cover more area with the same weight of material. In addition, aerogel felt also in sound insulation, fire, moisture and other aspects of excellent performance, in the building materials industry green, low-carbon development of the background, aerogel felt insulation material to protect thousands of households.

1. What is aerogel felt?
Aerogel is a new type of material with a nanoporous structure, with a porosity of up to 80%-99.8% and an extremely low thermal conductivity, which is the lightest solid material known in the world today, and also the material with the best thermal insulation performance so far. Aerogel thermal insulation materials with its unique characteristics of high performance, low cost, non-combustible, etc., in the field of building (such as external wall insulation, doors and Windows and roof insulation, etc.) insulation has a very large application prospects, for the construction of green buildings, is a good building material.

2 the advantages of aerogel felt in building insulation
The thermal insulation performance of aerogel felt is the most striking, and the technology is the most mature, and it also has broad application prospects in the field of building energy conservation, and is an alternative product for traditional thermal insulation materials.
Traditional wall and roof insulation materials are divided into inorganic materials and organic materials, accounting for 80% of the thermal insulation materials market, organic thermal insulation materials are not good fire retardant, inorganic thermal insulation materials such as rock wool, glass wool, etc. Most of the density and insulation effect is not good. The thermal conductivity of aerogel felt is almost one-third of that of traditional thermal insulation materials.

Aerogel felt has the characteristic of low thermal conductivity, low density, high flame retardant and so on, which makes it have the efficient thermal insulation performance, and is the ideal thermal insulation material for buildings. The combustion performance of aerogel felt is class A, which effectively solves the contradiction between building insulation and building fire prevention, and can also play the function of sound absorption and noise reduction, effectively improving the living environment. The density of aerogel felt is less than 200kg/m, which is easy to construct and also reduces the weight of the entire building.

3, the role of aerogel felt in building insulation
Aerogel felt can not only be used as A class A fire insulation material, but also can solve the problem of phase separation of phase change mortar, not only has strong thermal insulation performance, but also can be fire retardant, and play a good role in energy saving in housing construction. Nano aerogel felt, which integrates heat preservation, fire prevention and water repellent, is more suitable for building thermal insulation engineering, and the construction process is simple, stable and reliable.
4. Summary
With the development of building energy-saving technology in China, the application of various thermal insulation materials in building thermal insulation engineering has also increased rapidly. # Aerogel felt # is a single material with thermal insulation, non-combustible and hydrophobic in three parts, which is made of nano silica aerogel as the main material by special process. It has efficient thermal insulation performance and can greatly reduce the thickness of insulation layer. In many projects, it can be proved that aerogel felt insulation project is a good measure to realize building insulation and energy saving.