1. Aerogel Coating A Nanoporous Thermal Barrier
Aerogel insulation finish is an innovation material born from the strange physics of aerogels– ultralight solids made of 90% air trapped in a nanoscale porous network. Imagine “icy smoke”: the small pores are so small (nanometers wide) that they quit heat-carrying air molecules from moving easily, eliminating convection (warm transfer via air flow) and leaving only marginal conduction. This gives aerogel finishes a thermal conductivity of ~ 0.013 W/m · K, far lower than still air (~ 0.026 W/m · K )and miles much better than standard paint (~ 0.1– 0.5 W/m · K).
(Aerogel Coating)
Making aerogel finishes starts with a sol-gel process: mix silica or polymer nanoparticles right into a liquid to form a sticky colloidal suspension. Next off, supercritical drying removes the fluid without falling down the vulnerable pore structure– this is key to protecting the “air-trapping” network. The resulting aerogel powder is combined with binders (to adhere to surface areas) and ingredients (for sturdiness), then applied like paint through splashing or brushing. The final film is thin (typically
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Tags: Aerogel Coatings, Silica Aerogel Thermal Insulation Coating, thermal insulation coating
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