Ceramic foam

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Ceramic foam is a tough, plastic-like foam made from ceramics. It is similar to Kevlar.The foam is made of aluminum oxide, a common high-temperature ceramic, but gets its extraordinary insulating powers from the many tiny air bubbles within the material. (Air is a very good thermal insulator, but needs to be trapped, as in a blanket, to be effective.) The foam can be used not only for thermal insulation, but for a variety of other applications such as acoustic insulation and adsorption of environmental pollutants.