Multilayer composite component

Abstract

A composite component characterized by the following layer construction a layer which consists at least partly of polyethylene, a layer which consists at least partly of a polyurethane and / or an elastomer, at least one layer which consists at least partly of a plastic reinforced by fibers, or which consists at least partly of an adhesive, wherein the layer is disposed directly between the layer and the layer, wherein the layers have been joined in a first operation to form a laminate composite and the layer have been joined in a second operation onto the laminate composite comprising the layers.

Description

BACKGROUNDTechnical Field[0001]The present invention relates to a composite component, to the use of a composite component of the invention, to a wind turbine for a wind power installation, and to a method for producing a composite component.Description of the Related Art[0002]Rotor blades for wind power installations have been known for some considerable time and are described for example in DE 10 2004 007 487 A1 and DE 10 319 246 A1. In their operation they are subject to high loads as a result of wind pressure, erosion, temperature fluctuations, UV radiation and also by precipitation. Particularly at locations with a tropical climate, distinguished by highly changeable weathering effects and a high atmospheric humidity, such as in Brazil or Taiwan, for example, but also in Germany, rotor blades tend to suffer erosion.[0003]At blade tip velocities of up to 300 km / h, grains of sand, salt particles, raindrops, insects or other airborne objects act abrasively. Particularly in the lea...

AI Technical Summary

Benefits of technology

This patent text describes a special component, specifically a rotor blade, that is highly resistant to wear and abrasion. This component requires minimal time and low temperatures to produce. Its technical effects include high durability and low production costs.

Problems solved by technology

In their operation they are subject to high loads as a result of wind pressure, erosion, temperature fluctuations, UV radiation and also by precipitation.

Particularly at locations with a tropical climate, distinguished by highly changeable weathering effects and a high atmospheric humidity, such as in Brazil or Taiwan, for example, but also in Germany, rotor blades tend to suffer erosion.

Particularly in the leading edge region, the surface of rotor blades is heavily loaded as a result, and at these points there is erosion of the rotor surface and therefore a loss of aerodynamics and stability.

In order to reduce the blade tip erosion and the associated cost and labor for maintenance and repair, it is possible to limit the maximum speed of the installation, which results, however, in a reduced power.

A disadvantage in this case is that with a process of that kind it is necessary to wait for a minimum working time until the gelcoat mixture has reacted to an extent such that it can be covered with fiber material.

This wait results in unwanted slowing of the process for producing a rotor blade or rotor blade element.

In the case of the gelcoat process, moreover, it is not possible to interrupt the production of a rotor blade element or rotor blade at any arbitrary point in order to allow bonding between the gelcoat surface layer and the infusion resin.

However, UHMW-PE is very difficult to bond using conventional adhesives and in particular does not adhere to resins, such as epoxy resins, for example.

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