Composite fiber reinforced member and method
First Claim
1. A method for forming a molded composite fiber reinforced member comprising the steps of providing a mold cavity of a desired configuration, placing a first sheet of a flowable heat curable resin containing glass fibers in the mold cavity, positioning at least one second sheet of a compatible flowable heat curable resin containing graphite fibers in overlying contacting relationship over a selected area of said first sheet less in area then said first sheet forming thereby a composite moldable assembly and applying pressure and heat to said moldable assembly to effect a compaction of said first and said second sheets and a contouring thereof to the configuration of the mold cavity and a curing of the resins therein to integrally bond said first and said second sheets together into an integral composite assembly.
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Accused Products
Abstract
A composite fiber reinforced plastic member and its method of manufacture to provide a high-strength light-weight part particularly suitable for use as a structural component. The composite member comprises a body or web comprised of a glass fiber reinforced thermosetting resin matrix having a carbonized fiber reinforced compatible resin stratum integrally bonded by the resin matrix over selected areas thereof corresponding to areas of anticipated high stress. The component is produced by molding under pressure and heat a moldable assembly comprising a first sheet of a flowable heat curable resin containing glass fibers having one or a plurality of second sheets comprised of a compatible flowable heat curable resin containing carbonized fibers disposed over selected areas of the first sheet. During the compression molding operation, the resins in the first and second sheets flow to conform with and fill the mold cavity and the resins cure forming a smooth surfaced composite integral assembly of high strength.
87 Citations
13 Claims
- 1. A method for forming a molded composite fiber reinforced member comprising the steps of providing a mold cavity of a desired configuration, placing a first sheet of a flowable heat curable resin containing glass fibers in the mold cavity, positioning at least one second sheet of a compatible flowable heat curable resin containing graphite fibers in overlying contacting relationship over a selected area of said first sheet less in area then said first sheet forming thereby a composite moldable assembly and applying pressure and heat to said moldable assembly to effect a compaction of said first and said second sheets and a contouring thereof to the configuration of the mold cavity and a curing of the resins therein to integrally bond said first and said second sheets together into an integral composite assembly.
Specification