It is also known as “blue smoke” because it is as light as a mist and has a bluish color. It shows many peculiar properties in the fields of heat, optics, electricity, mechanics, and acoustics. It is known as “the magic material that changes the world”. It was first made by American scientist Kistler in 1931 by hydrolyzing water glass. With the deepening of research and the gradual improvement of supercritical drying technology, the solid particles that make up the airgel tend to be more refined, and the micropore distribution tends to be more uniform, so that the density of the material is lower and the porosity is higher.
Airgel thermal insulation felt is a flexible thermal insulation material that combines airgel materials in flexible substrates through a special process. The traditional thermal insulation materials mainly include aluminum silicate, glass wool, rock wool, rubber and plastic, polyurethane, etc. In the past few decades, traditional thermal insulation materials have played a huge role in their respective fields, providing thermal insulation for industries , to reduce energy consumption for urban buildings. With the development of the times and the advancement of science and technology, traditional thermal insulation materials are increasingly unable to meet people’s requirements for high efficiency and energy saving, such as: poor thermal insulation effect, prone to fire, easy to age, and short service life. So is there any new insulation material to replace these traditional insulation materials? That is nano airgel insulation blanket.
low thermal conductivity
The index to measure the thermal insulation effect of thermal insulation materials is the thermal conductivity. The thermal conductivity of airgel thermal insulation felt is 0.020W (m.K), while the thermal conductivity of traditional thermal insulation materials is 0.028W (m.K)~0.045W (m.K). Due to the thermal conductivity Low, can achieve the same insulation effect with thinner insulation thickness. It can effectively reduce the thickness of the wrapping layer and reduce heat loss.
Class A non-combustible fire rating
Airgel thermal insulation felt is an inorganic material with a completely non-combustible Class A fire resistance, while in traditional thermal insulation materials, rubber, plastic and polyurethane are organic materials that are prone to fire.
Good waterproof effect
Its hydrophobic rate exceeds 99%, and at the same time allows water vapor to pass through, and has unique hydrophobic and breathable properties. Therefore, it can effectively reduce the generation of condensation during use and avoid corrosion under insulation (CUI) to the greatest extent. However, traditional thermal insulation materials are very easy to absorb water during use, resulting in an increase in thermal conductivity, a decrease in thermal insulation effect, and corrosion of the pipe layer.
Wide temperature range
It can be used in a wide range of temperatures, from low temperatures of -200°C to high temperatures of 650°C. In traditional thermal insulation materials, ordinary rubber and plastics can reach -40°C at the lowest, while the high temperature can only reach 120°C; , the highest temperature is only about 100 ℃.
long lasting
The service life of airgel thermal insulation blanket is more than 15 years, which is 3-5 times that of traditional materials, which can effectively reduce the cost of replacement of thermal insulation materials and the cost of construction and operation. Aluminum silicate and rock wool in traditional thermal insulation materials will collapse in structure after 3-5 years of use, resulting in an increase in thermal conductivity, requiring replacement of thermal insulation materials.
