Composite fibre cement article with radiation curable component

摘要

Disclosed is a composite building article having a first zone which comprises predominantly fiber cement comprising 20-60 weight % cement, 0-60 weight % silica, 0.1-15 weight % cellulose fiber; and 0 to 5% weight % of at least one additive wherein the first zone comprises a fiber cement substrate having a porosity of between about 20%-40% by volume, a second zone which comprises predominantly a radiation curable material, and a subsurface interfacial zone integrally formed and interposed in between, the subsurface interfacial zone comprising an interlocking matrix formed of the radiation curable material and the fiber cement, wherein the radiation curable material in the subsurface interfacial zone contains no catalyst and is curable by ultraviolet radiation. Also disclosed is a method of forming a building product, comprising applying ultraviolet radiation to the above composite article.