Polypropylene fiber for fiber cement-reinforced composites

Abstract

A polypropylene fiber including: a polypropylene matrix, at least a surface modifier, and at least an additive selected from surfactants, lubricating agents or mixtures thereof. A method of producing polypropylene fibers by (i) mixing a polypropylene with a surface modifier in extrusion, (ii) melt spinning the composition obtained in step (i) to produce the fibers, where a surfactant is added to step (i) and/or a lubricant is applied to the fibers during step (ii). A fiber cement-reinforced composite including a cementitious matrix, a cellulosic component, optionally, a limestone component and a polypropylene fiber comprising: a polypropylene matrix, at least a surface modifier, at least one additive selected from surfactants, lubricating agents and mixtures thereof. An article comprising the fiber cement-reinforced composite and a roof tile comprising the fiber cement-reinforced composite.

Dependencies are inferred from the claim text.