Electrically conductive and insulative composite

• US 10,176,905 B2
• Filed: 12/08/2016
• Issued: 01/08/2019
• Est. Priority Date: 12/08/2016
• Status: Active Grant

• Current Assignee: Wisk Aero LLC
• Original Assignee: Kitty Hawk Corporation
• Inventors: Fernandez, Ian
• Primary Examiner(s): Ngo, Hung V
• Application Number:
  US15/372,920
• Publication Number:
  US 20180166183A1
• Time in Patent Office: 761 Days
• CPC Class Codes: B32B 15/04 comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to a bituminous or tarry layer B32B11/08; next to a water-setting substance layer B32B13/06; next to a glass layer B32B17/061; next to a cellulosic plastic layer B32B23/042
• CPC Class Codes: B32B 15/14 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 15/20 comprising aluminium or copper B32B15/016 and B32B15/017 take precedence
• CPC Class Codes: B32B 2262/101 Glass fibres
• CPC Class Codes: B32B 2307/202 Conductive
• CPC Class Codes: B32B 2307/206 Insulating
• CPC Class Codes: B32B 2307/212 Electromagnetic interference shielding
• CPC Class Codes: B32B 2307/50 having particular mechanical properties
• CPC Class Codes: B32B 2307/546 Flexural strength; Flexion stiffness
• CPC Class Codes: B32B 25/08 of synthetic resin
• CPC Class Codes: B32B 2605/18 Aircraft blades, propellers B32B2603/00
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 3/04 characterised by at least one layer folded at the edge, e.g. over another layer ; characterised by at least one layer enveloping or enclosing a material
• CPC Class Codes: B32B 5/26 another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B32B 7/12 using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: H01B 13/06 Insulating conductors or cables H01B13/32 takes precedence
• CPC Class Codes: H01B 7/02 Disposition of insulation
• CPC Class Codes: H05K 9/0086 comprising a single discontinuous metallic layer on an electrically insulating supporting structure, e.g. metal grid, perforated metal foil, film, aggregated flakes, sintering
• CPC Class Codes: H05K 9/0098 for shielding electrical cables

Abstract

An electrically conductive and insulative composite (ECIC) is disclosed. In various embodiments, an ECIC as disclosed herein may include an electrically conductive structural element and one or more electrically insulative structural elements adhesively bonded to the conductive structural element to form a unitized structure having a design shape and one or more significant mechanical properties. The conductive structural element is substantially encapsulated by said one or more electrically insulative structural elements with the exception of one or more contact areas comprising portions of conductive material not encapsulated by said one or more electrically insulative structural elements.

Claims

1. An electrically conductive and insulative composite structure, comprising:

a first cap section including;

an electrically conductive structural element; and

one or more electrically insulative structural elements comprising an electrically insulative composite material adhesively bonded to the conductive structural element to form a rigid unitized structure having a design shape and one or more significant mechanical properties, including rigidity and strength;

wherein the conductive structural element is substantially encapsulated by said one or more electrically insulative structural elements with the exception of one or more contact areas comprising portions of conductive material not encapsulated by said one or more electrically insulative structural elements;

a web section perpendicular to the first cap section and joined to the first cap section.

2. The composite structure of claim 1, wherein said conductive structural element comprises an electrically conductive metal.

3. The composite structure of claim 1, wherein said electrically insulative composite material includes fiber-reinforced polymer material.

4. The composite structure of claim 3, wherein said electrically insulative composite material comprises one or more of fiberglass or innegra.

5. The composite structure of claim 3, wherein said electrically insulative composite material has one or more mechanical properties that contribute to satisfying a design requirement of a system in which the electrically conductive and insulative composite structure is designed to be integrated.

6. The composite structure of claim 1, further comprising one or more additional structural elements bonded to said one or more electrically insulative structural elements.

7. The composite structure of claim 6, wherein one or more of said additional structural elements comprises a composite layer.

8. The composite structure of claim 6, wherein one or more of said additional structural elements comprises an electromagnetic shielding element.

9. The composite structure of claim 6, wherein said electrically conductive structural element, said one or more electrically insulative structural elements, and said one or more additional structural elements comprise a single unitized structure having a design shape and one or more significant mechanical properties.

10. The composite structure of claim 1, wherein one or more of said electrically conductive structural elements each includes at least two contact areas separated by a distance enabling a flow of electrical current between said contact areas.

11. The composite structure of claim 1, wherein said contact areas comprise portions of conductive material that are exposed by removing or omitting encapsulating material.

12. The composite structure of claim 1, wherein said contact areas comprise portions of conductive material that extend away from a main body portion of said electrically conductive structural element.

13. The composite structure of claim 1, wherein said electrically conductive structural element comprises a first electrically conductive structural element and further comprising a second electrically conductive structural element, electrically isolated from said first electrically conductive structural element, each of the first and second electrically conductive structural elements having a pair of contact areas, one at each of two locations separated by a distance, enabling an electrical circuit to be made of which the first electrically conductive structural element and the second electrically conductive structural element comprise low impedance segments.

14. The composite structure of claim 1, wherein said significant mechanical properties include one or more of a design rigidity, durability, flexibility, maximum load, and strength.

15. The composite structure of claim 1, further comprising a second cap section substantially parallel to the first cap section and joined to the first cap section by the web section.

16. A method to manufacture an electrically conductive and insulative composite structure, comprising:

forming a first cap section including by;

forming an electrically conductive structural element; and

bonding one or more electrically insulative structural elements comprising fiber-reinforced polymer material adhesively to the conductive structural element to form a rigid unitized structure having a design shape and one or more significant mechanical properties, including rigidity and strength;

wherein the conductive structural element is substantially encapsulated by said one or more electrically insulative structural elements with the exception of one or more contact areas comprising portions of conductive material not encapsulated by said one or more electrically insulative structural elements;

forming a web section perpendicular to the first cap section; and

joining the web section to the first cap section.

17. The method of claim 16, further comprising bonding one or more additional structural elements comprising fiber-reinforced polymer material to said one or more electrically insulative structural elements.

18. The method of claim 16, wherein said conductive structural element comprises a conductive bar or bus having an associated mechanical strength and rigidity.

19. The method of claim 16, wherein said insulative structural elements comprise an electrically insulative composite material.

20. The method of claim 16, further comprising forming in each of one or more of said electrically conductive structural elements at least two contact areas separated by a distance enabling a flow of electrical current between said contact areas.