Why Can Glass Wool Keep Warm And Insulation

Why can glass wool keep warm and insulation?

Due to the extremely fine and numerous glass fibers inside glass wool products, their total surface area is very large. For example, when 12 kilograms of glass fibers with an average diameter of 5um are filled in a space of 1m ³, their total surface area can reach 5000m ². However, the volume of glass fibers only accounts for 0.6%, and the rest is air, which has a great resistance to air flow. Air can hardly flow in it, so it loses the ability of convective heat transfer. Static air has extremely strong thermal insulation performance, making glass wool products have excellent thermal insulation performance.