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US 5,399,377 AGranted
Borazine oligomers and composite materials including boron nitride and methods of making the same
AssigneeThe Board of Trustees of the University of Illinois
InventorsJames Economy, Dong-pyo Kim
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Abstract
Borazine oligomers in liquid form are produced and used to create composites of fibers bonded to boron nitride as a matrix and also to coat or increase the density of various fiber composites.
Claims8
A method of making a composite material comprising:
- a. heating a quantity of borazine in a nitrogen atmosphere to a temperature of approximately 70.degree. C.,
- b. be maintaining said temperature until said quantity attains a viscosity of between 100 centipoise and 10,000 centipoise, having become borazine oligomer,
- c. immersing a plurality of fibers in said borazine oligomer, and
- d. applying heat and pressure to said fibers and said borazine oligomer to form a solid composite material of said fibers in a boron nitride matrix.
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A method of making a composite material including boron nitride comprising:
- a. heating a quantity of borazine in a nitrogen atmosphere to a temperature of approximately 70.degree. C.,
- b. be maintaining said temperature until said quantity attains a viscosity of between 100 centipoise and 10,000 centipoise, having become borazine oligomer,
- c. immersing a carbon fiber carbon matrix composite material in said borazine oligomer, and
- d. applying heat to said composite material and said borazine oligomer to form a composite material including a boron nitride matrix.
1 more element
Dependencies are inferred from the claim text.