COMPOSITIONS OF VERMICULITE LAMELLAE AND SOLID PARTICULATE MATERIALS

摘要

A composition is provided comprising vermiculite lamellae(delaminated vermiculite) and one or more solid particulate additive materials which have a basic reaction in water, especially magnesium oxide. These particulate additives improve the physical properties of vermiculite articles such as, for example, cast sheets or rigid foams especially compressive strength and stability to water. While prior art cast vermiculite articles possess a degree of structural integrity, articles made with the vermiculate lamellae of the present invention demonstrate superior physical properties and physical strength.