Patent ID: 9428388
Filing Date: 2016-08-30
CPC Classification: C01B,C04B,C08G,C09K,F16D

Claim Text:
1. 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.