MICROPOROUS THERMAL INSULATION MATERIAL

摘要

27 A microporous thermal insulation material is formed from an intimate mixture of a dry particulate microporous material and reinforcing glass filaments. The glass constituting the glass filaments contains not more than 1 per cent by weight Na20 and preferably has the following composition: SiO2 50 - 100 per cent by weight Al2O3 up to 25 per cent by weight B2O3 up to 8 per cent by weight MgO up to 10 per cent by weight CaO up to 21 per cent by weight Na2O up to 1 per cent by weight K2O up to 2 per cent by weight Fe2O3 up to 1 per cent by weight F2 up to 1 per cent by weight.