PRECURSORS FOR CARBON-CARBON COMPOSITES
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United States of America Patent
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Sep 6, 2018
app pub date -
Sep 27, 2016
filing date -
Sep 27, 2016
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Abstract
The present invention provides a precursor curable composition including (a) at least one first epoxy resin; (b) at least one latent catalyst, (c) optionally, at least one curing agent, (d) optionally, at least one organic solvent, and (e) optionally, at least one second epoxy resin; wherein the thermal stability of the precursor curable composition when aged at 50 C for 16 days as measured by an increased 25 C viscosity from 0 percent to about 20 percent; and wherein, when the precursor curable composition is cured, the carbon yield of the cured precursor curable composition as measured by thermogravimetric analysis ranges from at least about 50 percent, based on the total weight of the cured composition without the optional organic solvent; a cured precursor composite material made from the above precursor curable composition; and a carbon-carbon composite product made from the above cured precursor composite material.
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