Aerogel fabric is a new material with good thermal insulation performance, which has a very low thermal conductivity and can effectively block the conduction of heat, so it can continue to keep warm when used in a low temperature environment. However, whether it can continue to keep warm at sub-zero temperatures still needs to consider a number of factors.
First of all, the thermal insulation performance of aerogel fabric is related to its material characteristics. Aerogel is a highly porous material with low thermal conductivity because it contains a large number of tiny pore structures, which can effectively isolate air flow and reduce heat conduction. This special structure allows the aerogel fabric to resist the invasion of cold air from the outside world to a certain extent, reduce the loss of heat, and thus keep the body warm. Therefore, at sub-zero temperatures, aerogel fabrics can provide a certain degree of warmth.
Secondly, the thermal performance of the aerogel fabric is also related to its thickness and density. In general, the greater the thickness of the aerogel fabric, the higher the density, the better the thermal performance. Thicker aerogel fabrics can provide better insulation and reduce heat escape, thus better keeping the body warm. Similarly, higher density aerogel fabrics can also provide better heat conduction blocking effect, and can resist the intrusion of cold air to a certain extent. Therefore, choosing a thicker and denser aerogel fabric can get a better thermal effect.
In addition, the thermal effect of the aerogel fabric is also affected by its use with other materials. In practical applications, aerogel fabrics are often used in combination with other fabrics or fillers to increase overall thermal performance. For example, adding aerogel fabric to the filling layer of winter down jackets can further improve the thermal performance. This is because the aerogel fabric can effectively prevent the air leakage phenomenon of down and reduce the heat loss in the filler. Therefore, the use of clothing or supplies with aerogel fabrics at sub-zero temperatures can provide better warmth.
However, although aerogel fabrics have good thermal properties, in extremely cold environments, relying solely on aerogel fabrics may not be able to fully meet the body's thermal needs. At this time, it is also necessary to combine other thermal measures, such as wearing multiple layers of warm clothing, using warm items, etc., to enhance the overall thermal effect. Because in extremely cold weather, even if there is a good warm material, the body's heat will still be rapidly lost, and other measures are needed to supplement the heat and keep the body warm.
In summary, the aerogel fabric can continue to keep warm at sub-zero temperatures, but its specific thermal effect is affected by a number of factors, including material characteristics, thickness and density, use with other materials, and environmental extremes. When using clothing or supplies of aerogel fabric, it is necessary to choose the appropriate thickness and density according to the actual situation, and combine other thermal measures to ensure a good thermal effect in a cold environment.
