Gm Global Technolgoy Operations, Inc.

Choongyong Kwag

Chen-Shih Wang

Stanley A Iobst

Richard P Atkins

Gary G Tibbetts

D Gerald Glasgow

The present disclosure relates to a fibrous veil and methods of making the same. The fibrous veil includes a base having a plurality of fibers, each of the plurality of fibers having an average diameter ranging from about 7,000 nm to about 9,000 nm. Graphite nano-platelets are attached to at least some of the plurality of fibers without a polymeric binder.

Laminated composites and methods of making the same

One embodiment of the invention provides a method for compression molding cosmetic panels with visible carbon fiber weaves using clear or lightly filled resins. The method uses a modified, two-step compression molding process to reflow the surface of a partially cured preform of carbon fiber weave and epoxy resin.

Method for molding cosmetic composite panels with visible carbon fiber weaves

One embodiment of the invention provides a method including molding composite panels that are UV resistant, substantially free of fiber readout, and have visible fibers from epoxy compositions comprising resins having aromatic rings.

Molding cosmetic composite panels with visible fibers from ultraviolent light  resistant epoxy compositions

The instant disclosure relates to a laminated composite and methods of making the same. The laminated composite includes a plurality of stacked prepregs having an interface formed between each pair of adjacent prepregs. Each prepreg includes a matrix material and reinforcing fibers dispersed therein. At least one fibrous veil is laminated to at least a portion of at least one of the interfaces, the at least one fibrous veil having graphite nano-platelets attached to at least one surface thereof.

A method of making a composite article of a graphite-filled polymer mixture that is robust during high shear mixing and compounding, and that exhibits relatively low electrical resistivity after molding. The mixture is formed by shear mixing a liquid polymeric material, graphitized carbon fibers having diameters of less than one micrometer, and glass fibers longer than the carbon fibers. The carbon and glass fibers constitute up to about 25 volume percent and up to about 50 weight percent, respectively, of the mixture, though the addition of as little as about 1 weight percent of the glass fibers has been shown to dramatically reduce resistivity. The mixture is then introduced into a mold so that the glass fibers are substantially oriented parallel to the direction of flow. Due at least in part to the glass fibers being larger than the carbon fibers, the carbon fibers are substantially aligned with the glass fibers and preferentially segregate to regions of the polymeric matrix near interfaces between the polymeric matrix and the glass fibers.

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Royal Oak, MI, United States of America

Choongyong Kwag