Organic-inorganic composite

摘要

A composite material comprises inorganic particles having first functional groups and a polymer or oligomer having second functional groups, wherein the respective functional groups react together so that the inorganic particles are chemically bound to the polymer or oligomer. The first and second functional groups may comprise -OH, -COOH, -NCO, -NH3, -NH2, -NH, or epoxy. The reactive groups in the inorganic particles may be present naturally or may be added via surface modification. The inorganic particles are advantageously aluminium hydroxide or magnesium hydroxide although nitrides, oxides, carbides, metal salts like calcium carbonate, and inorganic layered materials, such as clay or talc, may be used. The polymer is preferably a polyacrylic acid copolymer, a polyurethane, or an epoxy resin. The composite is typically fire-resistant and is used to form a fire-resistant plate, flake or film, which may withstand flame temperatures of 1000-1200{C for more than 3 minutes.