Patterning on surface with high thermal conductivity materials

• US 8,277,613 B2
• Filed: 01/20/2010
• Issued: 10/02/2012
• Est. Priority Date: 04/15/2005
• Status: Expired due to Fees

• Current Assignee: Siemens Energy Incorporated (Siemens AG)
• Original Assignee: Siemens Energy Incorporated (Siemens AG)
• Inventors: Smith, James D. B., Stevens, Gary, Wood, John W.
• Primary Examiner(s): Hug, Eric
• Assistant Examiner(s): MINSKEY, JACOB T
• Application Number:
  US12/690,144
• Publication Number:
  US 20100108278A1
• Time in Patent Office: 986 Days
• Field of Search: 162/106, 162/183, 162/184, 162/186
• US Class Current: 162/183
• CPC Class Codes: B32B 2255/12 on paper layer
• CPC Class Codes: B32B 2255/24 Organic non-macromolecular coating
• CPC Class Codes: B32B 2260/021 Fibrous or filamentary layer
• CPC Class Codes: B32B 2260/028 Paper layer
• CPC Class Codes: B32B 2260/046 Synthetic resin
• CPC Class Codes: B32B 2264/104 Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
• CPC Class Codes: B32B 2264/108 Carbon, e.g. graphite particles
• CPC Class Codes: B32B 2307/206 Insulating
• CPC Class Codes: B32B 2307/302 Conductive
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes
• CPC Class Codes: B32B 2457/00 Electrical equipment
• CPC Class Codes: B32B 2554/00 Paper of special types, e.g. banknotes
• CPC Class Codes: B32B 2581/00 Seals; Sealing equipment; Gaskets
• CPC Class Codes: B32B 29/02 next to a fibrous or filamentary layer
• CPC Class Codes: B32B 29/06 specially treated, e.g. surfaced, parchmentised
• CPC Class Codes: D21H 13/44 Flakes, e.g. mica, vermiculite
• CPC Class Codes: D21H 17/67 Water-insoluble compounds, e.g. fillers, pigments
• CPC Class Codes: D21H 17/69 modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
• CPC Class Codes: D21H 19/64 Inorganic compounds
• CPC Class Codes: D21H 21/54 : being spherical, e.g. microcapsules, beads
• CPC Class Codes: Y10T 428/24793 : Comprising discontinuous or differential impregnation or bond
• CPC Class Codes: Y10T 428/24851 : Intermediate layer is discontinuous or differential
• CPC Class Codes: Y10T 428/24893 : including particulate material
• CPC Class Codes: Y10T 442/2418 : Coating or impregnation increases electrical conductivity or anti-static quality
• CPC Class Codes: Y10T 442/2426 : Elemental carbon containing
• CPC Class Codes: Y10T 442/2475 : Coating or impregnation is electrical insulation-providing, -improving, or -increasing, or conductivity-reducing
• CPC Class Codes: Y10T 442/2992 : Coated or impregnated glass fiber fabric

Abstract

The present invention provides for high thermal conductivity paper that comprises a host matrix (10), and high thermal conductivity materials (12) added to a surface of the host matrix in a specific pattern (12). The high thermal conductivity materials are comprised of one or more of nanofillers, diamond like coatings directly on the host matrix, and diamond like coatings on the nanofillers. In particular embodiments the specific pattern comprises one or more of a grid, edging, banding centering and combinations thereof and the high thermal conductivity materials cover 15-55% of the surface of the host matrix. Multiple surfaces, including sub layers my have patterning.

Claims

1. A method of making high thermal conductivity paper comprising:

adding high thermal conductivity materials and a solvent for the high thermal conductivity materials onto or within a substrate consisting essentially of mica;

evaporating the solvent such that the high thermal conductivity materials form a specific pattern on or within the substrate; and

producing a mica paper product from the substrate;

wherein the produced mica paper product comprises portions having the specific pattern of high thermal conductivity materials and portions comprising mica without the specific pattern; and

wherein the plurality of high thermal conductivity materials comprises at least one of nanofillers, diamond like coatings on the paper product, or diamond like coatings on nanofillers.

2. The method of claim 1, wherein the high thermal conductivity materials comprise 5-80% of a surface area of a surface of the paper product after the producing.

3. The method of claim 1, wherein multiple specific patterns are added to the mica paper layer.

4. The method of claim 1, wherein the specific pattern comprises at least one of a grid, edging, banding, centering, or combinations thereof.

5. The method of claim 1, wherein the high thermal conductivity materials have an aspect ratio in a range of from 3 to 100.

6. A method of making high thermal conductivity paper comprising:

adding high thermal conductivity materials onto at least one of a mica substrate consisting essentially of mica or a mica paper product consisting essentially of mica in a specific pattern; and

prior to or after the adding the high thermal conductivity fillers, producing a paper product from the mica substrate;

wherein the produced mica paper product comprises portions having the specific pattern of high thermal conductivity materials and portions comprising mica without the specific pattern.

7. The method of claim 6, wherein the high thermal conductivity materials are added onto a surface of the mica paper after producing the mica paper.

8. The method of claim 6, wherein the mica substrate comprises dry mica flakelets, wherein the high thermal conductivity materials are added to the dry mica flakelets in the specific pattern during the adding, and wherein the paper product is formed after the adding.

9. The method of claim 6, wherein the mica substrate comprises a mica slurry, wherein the high thermal conductivity materials are added to the mica slurry in the specific pattern during the adding, and wherein the paper product is formed after the adding.

10. The method of claim 6, wherein the specific pattern comprises at least one of a grid, edging, banding, centering, or combinations thereof.

11. The method of claim 6, wherein the high thermal conductivity materials comprise at least one of nanofillers, diamond-like coatings on the mica paper product, and nanofillers having diamond like coatings.

12. The method of claim 11, wherein the high thermal conductivity materials have an aspect ratio in a range of from 3 to 100.

13. The method of claim 6, wherein said adding is done at least twice to provide a staggering of the specific pattern during the producing when viewed in cross-section.

14. The method of claim 6, wherein the high thermal conductivity materials comprise dendrimers.