ADHESIVE FOR FILLING JOINTS AND GAPS IN ROTOR BLADES FOR WIND POWER PLANTS

摘要

The invention relates to two component polyurethane compositions which have a long open time and even after extended exposure to a high moisture climate (for example 70% relative humidity) even after 40 minutes and in particular even after 60 minutes can still be glued and cured to form polymers having high mechanical strength. The composition comprises castor oil at least one polyol having 5 to 8 hydroxyl groups a mixture of two different polyether and/or polyester polyols on the basis of castor oil or soybean oil and at least one polyisocyanate. The two component polyurethane compositions are suitable in particular for non positively filling joints or gaps in molded bodies that are joined by large surface area structural gluing in particular of vane half shells of rotor blades for wind power plants.