Carbon—carbon composites
AssigneeBlue Cube IP LLC
InventorsHamed Lakrout, Maurice J. Marks, Ludovic Valette
Life of this patent
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Abstract
A process for preparing a carbon-carbon composite including the steps of: (a) providing a curable low viscosity aromatic epoxy resin liquid formulation, wherein the formulation has a neat viscosity of less than 10,000 mPa-s at 25° C. prior to adding optional components, prior to curing, and prior to carbonizing; and wherein the formulation being cured has a carbon yield of at least 35 wt % disregarding the weight of the carbon matrix and any optional components present in the composition; (b) contacting a carbon matrix with the formulation of step (a); (c) curing the contacted carbon matrix of step (b); and (d) carbonizing the cured carbon matrix of step (c) to form a carbon-carbon composite; and a carbon-carbon composite made by the process.
Claims16
A process for preparing a carbon-carbon composite comprising the steps of:
- (I) providing a liquid carbon precursor formulation comprising (a) at least one aromatic epoxy resin comprising a divinylarene dioxide;
- and (b)(i) at least one aromatic co-reactive curing agent, (b)(ii) at least one catalytic curing agent, or (b)(iii) a mixture thereof;
- wherein the liquid precursor composition has a neat viscosity of less than 10,000 mPa-s at 25° C. prior to adding optional components, prior to curing, and prior to carbonizing;
- and wherein the liquid precursor composition being cured has a carbon yield of at least 35 weight percent disregarding the weight of the carbon matrix and any optional components present in the composition;
- (II) contacting a carbon matrix with the liquid formulation of step (I) to form a contacted carbon matrix;
- (III) curing the formulation of step (I) contacted to the carbon matrix of step (II) to form a cured contacted carbon matrix (also referred to as a “green carbon-carbon composite”);
- wherein the cured formulation contacted to the carbon matrix has a carbon yield of at least 35 wt % disregarding the weight of the carbon matrix and any optional components present in the composition;
- and
- (IV) carbonizing the cured contacted carbon matrix of step (III) to form a carbon-carbon composite.
Dependencies are inferred from the claim text.