Silica aerogel mat is a kind of high performance insulation material, which combines the low density, high porosity, low thermal conductivity and other performance characteristics of silica aerogel with the good mechanical strength, temperature resistance and chemical stability of the fiber, becoming the ideal choice for aerospace, building insulation, industrial insulation and other fields.

The bulk density of silica aerogel felt is a key index, which directly affects the insulation effect, installation convenience and structural design of the material. Lightweight materials help to reduce the weight burden of the overall structure, especially in the aerospace and transportation sectors.

Currently, the bulk weight (density) of silica aerogel felt on the market is usually between 50 and 200 kg/m³. Within this range, the material retains its lightweight characteristics while also ensuring sufficient strength to withstand the mechanical pressures that may be encountered during the application.

The specific volume weight is affected by the preparation process, treatment temperature and other factors. For example, by changing the size and distribution of silica particles, the aperture and density of aerogel felt can be adjusted, which affects its thermal insulation performance and mechanical strength. In addition, the treatment temperature will also affect the bulk density of aerogel felt. High temperature treatment may change part of the structure of aerogel felt, resulting in changes in bulk density.

In the field of building insulation, the use of low volume weight silica aerogel felt can effectively reduce the burden on the wall, while providing excellent insulation effect. In the aerospace sector, lightweight aerogel felt not only reduces the takeoff weight of the vehicle, but also protects the internal structure at extreme temperatures. In industrial insulation, this material can reduce the insulation layer thickness of pipes and equipment and improve space utilization.

Silica aerogels have shown great application potential in many fields because of their light bulk density and excellent thermal insulation properties. In the selection of such materials, the performance indicators and practical application needs must be considered comprehensively to achieve the best application effect.