Fiber-reinforced composites and method for the production thereof
AssigneeSaertex Wagener GmbH & Co. KG
InventorsGert Wagener, Carsten Schoeppinger, Jens Kleffmann, Markus Kleineberg, Arno Pabsch, Christof Sigle
Life of this patent
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Abstract
A thread or other element for bonding fibers in a fibrous reinforcement for use in a fiber composite is such that it is at least degraded in the course of the production of said fiber composite.
Claims30
A fiber-reinforced material, comprising a solid matrix material having dispersed therein a fibrous reinforcement, wherein the fibrous reinforcement comprises a plurality of fibers that were at one time bonded together at spaced points by at least one bonding element, wherein the at least one bonding element is located adjacent to the fibers but does not hold the reinforcing fibers of the fibrous reinforcement together after partially disappearing in the course of making the composite, such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material.
A fibrous reinforcement for use in forming a fiber-reinforced composite material having the fibrous reinforcement encapsulated within a solidified matrix material, wherein the fibrous reinforcement comprises a plurality of fibers that are bonded together at spaced crossover points by at least one bonding element comprising/ a thread that is at least substantially but only partially degraded in the course of making the composite material, at the latest upon the solidification of the matrix material, such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material.
A fiber-reinforced composite material having a fibrous reinforcement encapsulated within a solidified matrix material produced by a method, comprising:
- (a) placing into a mold cavity a fibrous reinforcement comprising a plurality of fibers that are bonded together at spaced points by at least one bonding element;
- (b) injecting into the mold cavity the matrix material or a precursor to the matrix material, in flowable form, to surround the fibrous reinforcement with the matrix material, wherein the matrix material comprises a polymer;
- and
- (c) solidifying the matrix material to form the composite material,
- wherein, after step (a), at least substantially but only partially degrading the bonding element in the course of making the composite material, at the latest upon the solidification of the matrix material, the degrading being carried out, to such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material.
A fiber-reinforced material, comprising a solid matrix material having dispersed therein a fibrous reinforcement, wherein the fibrous reinforcement comprises a plurality of fibers that were at one time bonded together at spaced points by at least one bonding element, wherein the at least one bonding element is located adjacent to the fibers does not hold the reinforcing fibers of the fibrous reinforcement together after partially disappearing in the course of making the composite, such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material, and wherein the thread comprises a liquid soluble component.
A fiber-reinforced material, comprising:
- a solid matrix material having dispersed therein a fibrous reinforcement, wherein the fibrous reinforcement comprises a plurality of fibers that were at one time bonded together at spaced points by at least one bonding element, wherein the bonding element comprises a thread which partially disappears in the course of making the composite, at the latest upon the solidification of the matrix material, so that the bonding element located adjacent to the fibers does not hold the reinforcing fibers of the fibrous reinforcement together after partially disappearing and wherein the thread comprises a liquid soluble component and wherein the liquid soluble component comprises polyvinyl alcohol.
A fibrous reinforcement for use in forming a fiber-reinforced composite material having the fibrous reinforcement encapsulated within a solidified matrix material, wherein the fibrous reinforcement comprises a plurality of fibers that are bonded together at spaced crossover points by at least one bonding element comprising a thread that is at least substantially but only partially degraded in the course of making the composite material, at the latest upon the solidification of the matrix material, such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material, and wherein the thread comprises a liquid soluble polymeric material.
A fibrous reinforcement for use in forming a fiber-reinforced composite material having the fibrous reinforcement encapsulated within a solidified matrix material, wherein the fibrous reinforcement comprises a plurality of fibers that are bonded together at spaced crossover points by at least one bonding element comprising a thread that is at least substantially degraded in the course of making the composite material, at the latest upon the solidification of the matrix material, and wherein the thread comprises a liquid soluble polymeric material wherein the bonding element comprises a polymeric material that is water soluble and wherein the polymeric material comprises polyvinyl alcohol.
A fiber-reinforced composite material having a fibrous reinforcement encapsulated within a solidified matrix material produced by a method, comprising:
- (a) placing into a mold cavity a fibrous reinforcement comprising a plurality of fibers that are bonded together at spaced points by at least one bonding element;
- (b) injecting into the mold cavity the matrix material or a precursor to the matrix material, in flowable form, to surround the fibrous reinforcement with the matrix material, wherein the matrix material comprises a polymer;
- and
- (c) solidifying the matrix material to form the composite material,
- wherein, after step (a), at least substantially but only partially degrading the bonding element in the course of making the composite material, at the latest upon the solidification of the matrix material, the degrading being carried out, such that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material, and wherein the bonding element comprises a liquid soluble polymeric material.
A fiber-reinforced composite material having a fibrous reinforcement encapsulated within a solidified matrix material produced by a method, comprising:
- (a) placing into a mold cavity a fibrous reinforcement comprising a plurality of fibers that are bonded together at spaced points by at least one bonding element;
- (b) injecting into the mold cavity the matrix material or a precursor to the matrix material, in flowable form, to surround the fibrous reinforcement with the matrix material, wherein the matrix material comprises a polymer;
- and
- (c) solidifying the matrix material to form the composite material,
- wherein, after step (a), at least substantially but only partially degrading the bonding element in the course of making the composite material, at the latest upon the solidification of the matrix material, the degrading being carried out to at least an extent that there is substantially no interfacial area between the bonding element and matrix material in the fiber-reinforced composite material and wherein the bonding element comprises a liquid soluble polymeric material;
- and
- wherein the liquid soluble polymeric material comprises polyvinyl alcohol.
Dependencies are inferred from the claim text.