Fiber composite material and method for production thereof

Abstract

A fiber composite material includes fibers and a resin connecting the fibers. The composite material has a high strength while reducing resin consumption and has great flexibility with respect to subsequent deformation. To achieve this, threads are used that include a plurality of individual filaments and a resin which can be crosslinked under an impact of at least one physical variable and / or one chemical substance. The resin is provided in non-crosslinked condition, but is essentially solvent-free, and holds the individual filaments in the threads together, wherein the individual filaments are arranged unidirectional to each other, and the threads form a composite by bonding together at contact surfaces of their respective external enveloping surfaces through resin bridges. The invention further relates to a fiber composite material including resin in a crosslinked state as well as a method for producing the fiber composite material.

Description

RELATED APPLICATIONS[0001]This application is a continuation of International application PCT / EP2010 / 056040 filed on May 4, 2010 claiming priority from German application DE 10 2009 019 500.9 filed on May 4, 2009 and German application DE 10 2009 061 031.6 filed on July 29, 2009. All the above applications are incorporated in their entirety by this reference.FIELD OF THE INVENTION[0002]The invention relates to a fiber composite material including fibers and a resin connecting the fibers. Additionally, the invention relates to a method for producing a fiber composite material including fibers and a resin connecting the fibers.BACKGROUND OF THE INVENTION[0003]Fiber composite materials are multi-phase or mix materials which include a bedding matrix made from resin and reinforcing fibers. Through interaction of the two components a fiber composite material has better properties than the fibers or the resin respectively by themselves. In particular when using extremely thin fibers with a...

AI Technical Summary

Benefits of technology

"The invention is a fiber composite material and a method for producing it that is characterized by high strength and minimal resin use. The material includes monofilament threads made up of individual filaments and resin that is crosslinked through the effect of physical or chemical materials. The resin is only present in a non-crosslinked state, which allows for easy handling and flexibility. The threads are cohesive, meaning they adhere to each other, and the resin only needs to be present at the contact points between the threads. The material has good deformability and flexibility, and the contact surfaces of the threads are large, resulting in a strong finished product. The method for producing the material is simple and clean, and the material can be easily shaped and formed into its final form."

Problems solved by technology

A material void in a fiber this way cannot cause a failure of the entire component produced from the fiber but initially only a fracture of an individual fiber in the composite.

A frequent disadvantage of fiber composite material is the incomplete embedding of fibers into the resin matrix.

The intermediary cavities between the individual filaments can hardly be completely reached or filled considering the viscosity of the resin so that the strength of the materials obtained remains significantly below the theoretically possible amount.

Furthermore, the portion of the resin relative to the mass or the volume of the entire fiber composite material from a cost point of view and from energy and environmental points of view is too high.

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