AEROGEL BLANKET

Aerogel is the lightest solid material. It exhibits unique properties in mechanics, acoustics, thermics, optics, etc., and is used in many fields such as aerospace, military, medicine, building materials, electronics, metallurgy.

Aerogel is the best thermal insulation material with extremely low density, "endless" hollow walls can minimize thermal radiation. Aerogel can achieve a thermal insulation effect that other materials cannot match. The thermal conductivity coefficient of aerogel is lower than that of air (at normal atmospheric pressure): below 0.018 w/mk. For comparison: kt air = 0.025 w/mk.

Composition

when ethyl silicate is used as a source of silicon obtained by the sol-gel method, small particles of silicic acid sol are formed into a polymer spatial network structure, which turns into a nanoporous structure as a result of aging and can be completely hydrophobic (waterproof) after chemical modification. Then supercritical drying with carbon dioxide is used to replace the liquid in the spatial structure with gas. This air-containing porous structure is an inorganic silica aerogel. The thermal conductivity of aerogel insulation materials at room temperature is below 0.018 w/(mk), and they have excellent insulating characteristics at high temperatures.

R– SI- OH -> R- SI – CH3

Aerogel

• substance with the lowest thermal conductivity in a solid;

• air flow is difficult, convective heat flow is difficult;

• addition of an opalescent agent to limit heat radiation

Disadvantages of traditional materials:

• short service life due to low moisture resistance;

• high maintenance costs;

• formation of condensation between the pipe and the insulating layer;

• severe corrosion under the insulating layer;

• the larger the pipe diameter, the more material layer is needed;

• loose structure.

3 years 3-6 years 6-10 years

Advantages of using aerogel in thermal insulation

• completely hydrophobic material;

• low thermal conductivity;

• high refractoriness;

• high degree of elasticity;

• very low material density;

• long service life;

• inorganic, fire-resistant material is safer and better than traditional ones;

• ability to reuse;

• thinner thermal insulation layer;

• less labor costs;

• increases the available area for use and reduces the space during transportation;

• excellent resistance to ultra-low temperatures;

• convenient in assembly and disassembly;

• ecologicaly clean;

• combines fire resistance and hydrophobicity at the same time.