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US 11,377,537 B2Granted
Multilayer composites comprising adhesive and one or more nanofiber sheets
AssigneeLintec of America, Inc.
InventorsMarcio D. Lima, Julia Bykova
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Abstract
Techniques are disclosed for producing multilayered composites of adhesive nanofiber composites. Specifically, one or more sheets of highly aligned nanofibers are partially embedded in an adhesive such that at least a portion of the nanofiber sheet is free from adhesive and is available to conduct current with adjacent electrical features. In some example embodiments, the adhesive nanofiber composites are metallized with a conductive metal and in these and other embodiments, the adhesive nanofiber composites may also be stretchable.
Claims20
An adhesive nanofiber composite comprising:
- a plurality of nanofiber sheets arranged in a stack direction, wherein at least one nanofiber sheet among the plurality of nanofiber sheets comprises a plurality of carbon nanotubes aligned substantially end to end on a plane and in a direction parallel to a drawing direction of the at least one nanofiber sheet, the at least one nanofiber sheet having a first surface and a second surface opposite of the first surface, wherein an outer nanofiber sheet among the plurality of nanofiber sheets is disposed on top of the plurality of nanofiber sheets and has a first surface exposed and a second surface, the second surface being in contact with a first surface of at least one underlying nanofiber sheet among the plurality of nanofiber sheets;
- a metal layer conformally deposited on the outer nanofiber sheet, wherein the metal layer penetrates through the outer nanofiber sheet and at least partially coats the at least one underlying nanofiber sheet and
- an adhesive layer:
- a) in contact with a second surface of the at least one underlying nanofiber sheet;
- b) coating the at least one underlying nanofiber sheet for filling voids between the plurality of carbon nanotubes;
- c) penetrating the at least one underlying nanofiber sheet and
- d) in contact with the second surface of the outer nanofiber sheet while the first surface of the outer nanofiber sheet remains free of adhesive,
- wherein the adhesive layer, the metal layers, and the plurality of nanofiber sheets form an adhesive nanofiber composite with an electrical resistance of less than 10 Ω/cm.
5 more elements
A metalized adhesive nanofiber composite comprising:
- a plurality of nanofiber sheets arranged in a stack direction, wherein at least one nanofiber sheet among the plurality of nanofiber sheets comprises a plurality of carbon nanotubes aligned substantially end to end on a plane and in a direction parallel to a drawing direction of the at least one nanofiber sheet, the at least one nanofiber sheet having a first surface and a second surface opposite of the first surface, wherein an outer nanofiber sheet among the plurality of nanofiber sheets is disposed on top of the plurality of nanofiber sheets and has a first surface exposed and a second surface, the second surface being in contact with a first surface of at least one underlying nanofiber sheet among the plurality of nanofiber sheets;
- a metal layer conformally deposited on the outer nanofiber sheet, wherein the metal layer penetrates through the outer nanofiber sheet and at least partially coats the at least one underlying nanofiber sheet and
- an adhesive layer:
- a) in contact with a second surface of the at least one underlying nanofiber sheet;
- b) coating the at least one underlying nanofiber sheet for filling voids between the plurality of carbon nanotubes;
- c) penetrating the at least one underlying nanofiber sheet and
- d) in contact with the second surface of the outer nanofiber sheet while the first surface of the outer nanofiber sheet remains free of adhesive.
4 more elements
Dependencies are inferred from the claim text.