Amazing silica aerogel material
Thermal insulation, thermal insulation, lightweight, silica aerogel materials meet the requirements of building energy conservation, in line with the development trend of building lightweight.

Silica aerogels have the characteristics of large specific surface area, high porosity, and small particle size. Due to the special physical structure of aerogel, it has strong fireproof and thermal insulation properties, which can be widely used in the field of construction and has a good development prospect in the field of building energy conservation.

The density of aerogel materials is between 0.16 and 4.0kg/m³, which is much lower than that of other materials, which is in line with the development trend of lightweight construction. In addition, silica aerogel materials also have the advantages of fire prevention, sound insulation, and corrosion resistance.

Application of silica aerogel in the field of building energy saving
Silica aerogel powder can be used in interior wall coatings, as a supplement to structural thermal insulation measures, not only for the thermal insulation of the interior walls of buildings, but also for the thermal insulation of external walls and roofs.

Inner wall insulation is an important part of building insulation projects, but it is often overlooked. The internal heat diffuses through the inner wall and is transferred to the outside. The thermal insulation of the inner wall needs to meet the most basic thermal insulation requirements, and also has the function of fire prevention. Non-polluting materials should be selected. The use of aerogel insulation board can improve the thermal insulation and sound insulation effect, and can also meet the fire resistance requirements of more than 400 ℃. Silica aerogel powder can be used in interior wall coatings, as a supplement to structural thermal insulation measures, not only for the thermal insulation of the interior walls of buildings, but also for the thermal insulation of external walls and roofs.

Adding aerogels with low thermal conductivity to traditional mortar and concrete can effectively improve material properties.

Silica aerogel thermal insulation mortar is made of Portland cement as a gelling agent, adding aerogel, SiO₂ and glass beads. The size of glass beads is much larger than that of aerogel particles and can be filled into the mortar matrix. Smaller aerogel particles will further fill the gaps to reduce the porosity as much as possible, and the thermal conductivity of the thermal insulation mortar will also decrease. The expected building insulation effect can be obtained. It can be seen that the aerogel thermal insulation mortar can block heat and improve the overall thermal insulation and energy saving effect of the building structure. Adding aerogel to concrete significantly reduces the weight and thermal conductivity of concrete, but also damages the mechanical strength of concrete, so aerogel concrete should be avoided in load-bearing walls.

The use of aerogel glass can improve the thermal insulation effect, reduce the influence of solar radiation, and meet the needs of people.

Silica aerogel glass usually reduces the heat transfer coefficient of glass in the form of hollow, vacuum and interlayer, and can improve the noise reduction ability. The energy-saving effect of aerogel glass is obvious. In areas with hot summer and cold winter, aerogel glass can weaken solar radiation in summer and reduce heat loss by about 20%. In winter, aerogel glass can block about 40% of indoor hot air, which has good energy saving value. At this stage, there are mainly two types of aerogel glass, one is laminated glass and the other is coated glass. Laminated glass consumes more aerogel, and the corresponding cost is higher. In contrast, the price of using coated glass is much lower than that of laminated glass, and the thermal insulation performance is good, up to 88% light transmittance, which will not affect indoor lighting.

Applying silica aerogel materials to the water storage tanks, collectors, pipes and other parts of water heaters can reduce heat loss by less than 30% compared with the past.

Silica aerogel materials have been used in rooftop solar collectors for a long time and are mainly used in thermal insulation devices of solar water heaters. Compared with ordinary solar water heaters, the application of aerogel materials in the water storage tanks, collectors, pipes and other parts of the water heater can increase the heat collection efficiency by at least 1 times, and the heat loss can be reduced by less than 30% compared with the past.

Silica aerogel felt has obvious characteristics of hydrophobicity and thermal insulation, which can improve the thermal insulation effect of pipelines and is an ideal thermal insulation material. The pipeline can be wrapped with aerogel felt as the main thermal insulation layer of the thermal insulation structure, and the metal protective layer can be used as the second thermal insulation measure to protect the aerogel thermal insulation layer. When wrapping the multi-layer aerogel felt, the staggered overlap method can be used to enhance the thermal insulation performance.

Silica aerogel thermal insulation material is a class A non-combustible material, which can be used in building fireproof structures.

Silica aerogel concrete composite wall is a lightweight thermal insulation wall material made of aerogel filled and modified lightweight aggregates. Filling expanded perlite with aerogel filling can prepare aerogel expanded perlite and use it as a lightweight aggregate to form a new type of thermal insulation material. The aerogel structure is mainly a porous network, and the slica aerogel thermal insulation composite material can be covered on the surface of the steel structure to prolong the burning time without producing toxic substances. At the same time, the silica aerogel material can hinder the spread of fire and is a class A non-combustible material, which can be used in building fireproof structures.