Fiber for concrete reinforcement
AssigneeAdfil N.V.
InventorsIves Swennen, Özlem Aslan, Jeroen Smet, Lien Van Der Schueren, Luc Ruys
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Abstract
A fiber for concrete reinforcement is provided including 85 wt. % to 98 wt. % of a polypropylene, 2 wt. % to 10 wt. % of a polycarbonate, and up to 5 wt. % of a compatibilizer, wherein the fiber has a tensile strength of at least 600 MPa and a modulus of at least 6 GPa.
Claims16
A fiber for concrete reinforcement wherein the fiber comprises 85 wt. % to 98 wt. % of a polypropylene and 2 wt. % to 10 wt. % of a polycarbonate, and 1 wt. to 5 wt. % of a compatibilizer wherein the fiber has a tensile strength of at least 600 MPa and a modulus of at least 6 GPa as determined according to EN 14889-2, and wherein the compatibilizer is a maleic acid grafted polymer.
A process for manufacturing a fiber for concrete reinforcement having a tensile strength of at least 600 MPa and a modulus of at least 6 GPa as determined according to EN 14889-2, the process comprising the steps of supplying a blend comprising 85 wt. % to 98 wt. % of a polypropylene, 2 wt. % to 10 wt. % of a polycarbonate, and 1 wt. to 5 wt. % of a compatibilizer, wherein the compatibilizer is a maleic acid grafted polymer, into an extruder, extruding the blend through a spinneret comprising one or more capillaries to form one or more extruded fibers, cooling the extruded fibers, drawing the extruded fiber at a draw ratio of at least 10, and cutting the fibers to a specified length.
Dependencies are inferred from the claim text.