Method for preparing a pultruded polyurethane composite

An equipment for preparing a pultruded polyurethane composite, the equipment comprising an injection device and an infiltration box, wherein the injection device comprises at least one injection channel and at least two injection ports, wherein the at least two injection ports are located on two opposite sides of the infiltration box, and wherein the at least one injection channel communicates with and is fed through the at least two injection ports, and wherein the infiltration box comprises an inlet and an outlet, wherein preparing the pultruded polyurethane composite comprises:

• placing at least a peel ply and at least a fibrous reinforcing material in the infiltration box, wherein the fibrous reinforcing material is partially covered by the peel ply, wherein the peel ply and the fibrous reinforcing material are drawn through the infiltration box at a certain speed by a continuous pultrusion process;
• infiltrating the fibrous reinforcing material with a polyurethane composition via the part of the fibrous reinforcing material not covered by the peel ply;
• drawing the infiltrated fibrous reinforcing material and the peel ply through a mold;
• and
• curing to obtain the pultruded polyurethane composite.