CONDUCTIVE SOLID FILM MATERIAL

• US 20100270513A1
• Filed: 04/02/2010
• Published: 10/28/2010
• Est. Priority Date: 04/03/2009
• Status: Abandoned Application

• Current Assignee: Alcoa Incorporated (Howmet Aerospace, Inc.)
• Original Assignee: Alcoa Incorporated (Howmet Aerospace, Inc.)
• Inventors: Haylock, Luke, Zeng, Liang
• Application Number:
  US12/753,347
• Publication Number:
  US 20100270513A1
• Time in Patent Office: Days
• US Class Current: 252/511
• CPC Class Codes: B82Y 10/00 Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
• CPC Class Codes: C08K 3/041 Carbon nanotubes
• CPC Class Codes: C09D 161/04 Condensation polymers of aldehydes or ketones with phenols only
• CPC Class Codes: C09D 5/24 Electrically-conducting paints conductive materials H01B1/00
• CPC Class Codes: C09D 7/61 inorganic
• CPC Class Codes: C09D 7/67 Particle size smaller than 100 nm
• CPC Class Codes: C09D 7/68 Particle size between 100-1000 nm
• CPC Class Codes: C09D 7/70 characterised by shape, e.g. fibres, flakes or microspheres

Abstract

A coating composition including a base composition, comprising at least one organic material and a plurality of carbon nano-tubes, wherein a concentration of the carbon nano-tubes is between 0.05 to 30 percent of a total weight of the coating composition, wherein the base composition comprises: i) methyl ethyl keton, ii) phenolic resin, and iii) ethyl alcohol, wherein each of the plurality of carbon nano-tubes has a length up to about 1.0 mm, wherein a diameter of each of the plurality of carbon nano-tubes is in a range from about 3 nm to about 200 nm, wherein the coating composition has a volume resistivity in a range from about 1×10⁻⁸ to about 10³ ohm-m, and wherein the coating composition has a friction coefficient that is lower than about 0.2μ.

Claims

1. A coating composition, comprising:

a base composition, comprising at least one organic material;

a plurality of carbon nano-tubes; and

wherein a concentration of the carbon nano-tubes is between 0.05 to 30 percent of a total weight of the coating composition.

2. The coating composition of the claim 1, wherein the base composition comprises:

i) methyl ethyl keton,

ii) phenolic resin, and

iii) ethyl alcohol.

3. The coating composition of the claim 1, wherein each of the plurality of carbon nano-tubes has a length up to about 1.0 mm.

4. The coating composition of the claim 1, wherein a diameter of each of the plurality of carbon nano-tubes is in a range from about 3 nm to about 200 nm.

5. The coating composition of the claim 1, wherein the coating composition has a volume resistivity in a range from about 1×

10<sup>−

8</sup> to about 10³ ohm-m.

6. The coating composition of the claim 1, wherein the coating composition is applied to a fastener.

7. The coating of the claim 1, wherein the coating composition has a friction coefficient that is lower than about 0.2μ

.