Method of making a cyanate ester foam
AssigneeSandia Corporation
InventorsMathias C. Celina, Nicholas Henry Giron
Life of this patent
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Abstract
A cyanate ester resin mixture with at least one cyanate ester resin, an isocyanate foaming resin, other co-curatives such as polyol or epoxy compounds, a surfactant, and a catalyst/water can react to form a foaming resin that can be cured at a temperature greater than 50° C. to form a cyanate ester foam. The cyanate ester foam can be heated to a temperature greater than 400° C. in a non-oxidative atmosphere to provide a carbonaceous char foam.
Claims22
A method of making a cyanate ester foam, comprising:
- forming a resin mixture comprising at least one cyanate ester resin and a isocyanate foaming resin, thereby providing a total resin mixture of hundred parts by weight;
- adding a catalyst/water mixture to the resin mixture at a temperature sufficient to keep the resin mixture reacting to form a foaming resin;
- and
- curing the foaming resin to make a solid cyanate ester foam.
A cyanate ester resin mixture, comprising at least one cyanate ester resin of between approximately 50 wt % and 90 wt %, an isocyanate foaming resin of between approximately 1 wt % and 30 wt %, a co-curative of less than approximately 35 wt % the mixture further comprising a catalyst/water mixture of less than approximately 3 parts per hundred of the resin mixture.
Dependencies are inferred from the claim text.