Method for electrospinning of an ultra-high temperature composite structure
AssigneeRaytheon Technologies Corporation
InventorBart A. van Hassel
Life of this patent
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Abstract
A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a polymeric precursor with a spinneret biased at a first DC voltage; forming a plurality of nanofibers from the polymeric precursor; receiving the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage; and changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field.
Claims9
A method for forming an ultra-high temperature (UHT) composite structure, the method comprising:
- dispensing a polymeric precursor with a spinneret biased at a first DC voltage;
- forming a plurality of nanofibers from the polymeric precursor;
- receiving a first layer of the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage;
- changing a direction of movement of the plurality of nanofibers between the spinneret and the collector with a plurality of magnets having a magnetic field by adjusting the magnetic field;
- pyrolyzing the first layer of the plurality of nanofibers disposed on the collector;
- carbothermally or borothermally reducing the first layer of the plurality of nanofibers disposed on the collector;
- and
- receiving a second layer of the plurality of nanofibers with the collector, such that the second layer of the plurality of nanofibers is in contact with the first layer of the plurality of nanofibers, subsequent to pyrolyzing and carbothermally or borothermally reducing the first layer of the plurality of nanofibers.
A method for forming an ultra-high temperature (UHT) composite structure, the method comprising:
- dispensing a polymeric precursor with a spinneret biased at a first DC voltage;
- forming a plurality of nanofibers from the polymeric precursor;
- receiving a first layer of the plurality of nanofibers with a collector biased at a second DC voltage different than the first DC voltage;
- pyrolyzing the first layer of the plurality of nanofibers deposited on the collector with a rapid thermal processing assembly by applying a thermal energy to the first layer of the plurality of nanofibers;
- and
- carbothermally or borothermally reducing the first layer of the plurality of nanofibers deposited on the collector subsequent to pyrolyzing the first layer of the plurality of nanofibers.
Dependencies are inferred from the claim text.