SURFACE-COATING COMPOSITIONS AND COMPOSITE MATERIALS

摘要

The surface-coating composition is water-free and comprises at least 37.5 % by weight (based on the total weight of the composition) of a cement as active filler, a film-former or binder, and a non-aqueous solvent or diluent, the particle size of the cement being not greater than 200 microns and the proportion by weight of cement being greater than the total proportion by weight of any other inorganic solids in the composition. The composition is applied to a substrate (such as metal, wood, plastics, or a building material) without addition of water, and provides a coating having enhanced resistance to corrosion and to ultra-violet degradation. The composite material also has enhanced resistance to corrosion and to ultra-violet degradation and comprises a fibre-reinforced plastics material and at least 37.5 % by weight (disregarding the fibre reinforcement) of a cement as active filler, the particle size of the cement being not greater than 200 microns.