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US 4,127,624 AGranted
Process for producing novel polymeric fibers and fiber masses
AssigneeHughes Aircraft Company
InventorsLeon B. Keller, Robert K. Jenkins
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AssigneeHughes Aircraft Company
InventorsLeon B. Keller, Robert K. Jenkins
Estimating the term…
We have prepared a new class of polymeric fibers and masses which are produced by precipitation from solutions of the polymer. The fibers and fiber masses have novel and useful characteristics. A fiber mass of this invention is a coherent, three-dimensional network of interconnected crystalline polymeric fibers and fiber bundles randomly arrayed in all directions. The fibers are smaller in diameter than can be consistently produced by conventional fiber drawing and spinning techniques. The novel fiber masses are produced from solutions of fiber-forming linear organic polymers having regularly repeated chain structures. The polymers are precipitated from these solutions by simultaneously cooling and agitating the polymer solution at vibrations in the sonic frequency range. The fiber masses may then be removed from the solvent or, in the case of a polymerizable solvent, a composite may be formed.
A process for the production of a three-dimensional polymeric fiber mass formed of crystalline, branched polymeric fibers and fiber bundles randomly arranged in all directions to define a coherent mass having isotropic properties comprising dissolving a fiber-forming polymeric material in a solvent, and cooling resultant solution while subjecting said solution to the application of sonic vibrations.
A method for the production of a composite material comprising:
A method for the production of a composite material comprising:
Dependencies are inferred from the claim text.