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Coatings comprising carbon nanotubes and methods for forming same

a technology of carbon nanotubes and coatings, applied in the direction of conductive layers on insulating supports, non-metal conductors, conductors, etc., can solve the problems of poor productivity, complicated apparatus having vacuum systems, difficult to apply to continuous or big substrates such as photographic films or show windows, etc., to reduce manufacturing costs and increase product effectiveness

Inactive Publication Date: 2006-03-23
GLATKOWSKI PAUL J
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0018] In another preferred embodiment, the invention provides dispersions of nanotubes suitable for forming films and other compositions. Such compositions may contain additional conductive, partially conductive or non-conductive materials. The presence of nanotubes reduces the manufacturing costs of conventional materials that do not contain nanotubes while increasing product effectiveness, preferably product conductivity. Compositions may be in any form such as a solid or liquid, and is preferably a powder, a film, a coating, an emulsion, or mixed dispersion.

Problems solved by technology

However, it requires a complicated apparatus having a vacuum system and has poor productivity.
Another problem of the dry process is that it is difficult to apply to a continuous or big substrate such as photographic films or show windows.

Method used

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  • Coatings comprising carbon nanotubes and methods for forming same
  • Coatings comprising carbon nanotubes and methods for forming same
  • Coatings comprising carbon nanotubes and methods for forming same

Examples

Experimental program
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examples

[0064] Comparison of Electrical Properties for MWNT (Hyperion and Carbolex) and SWNT (CNI (Laser Ablated and HiPCO))

[0065] The nanotubes in Table 1 were sonicated for eight minutes into Titanium SI-DETA (ceramer hybrid resin, this work has been repeated for other resin systems like epoxy and urethane) and then cast onto a glass or polycarbonate slide. A set of Hyperion MWNT was sonicated in toluene then rinsed in IPA and added to the Titanium SI-DETA were it was sonicated for another 4 minutes. The thickness of the cast films is 0.5 mils thick.

TABLE 1HyperionWt. %MWnT% TBuckyNanotubesHyperionTolueneTolueneUSACNIDry Wt.MWnT% TExtractedExtractedMWnT*% TSWnT% T0.042.2E+984.50.063.5E+773.50.083.5E+776.20.10>1.0E+1192>1.0E+1185.5>1.0E+1194.44.5E+780.20.20>1.0E+1188.1>1.0E+1177.4>1.0E+1194.21.0E+770.00.30>1.0E+1188.7>1.0E+1174.1>1.0E+1193.17.5E+659.410.40>1.0E+1185.7>1.0E+1192.51.7E+654.80.50>1.0E+1182.2>1.0E+1163.4>1.0E+11921.00>1.0E+1168.53.5E+937.5>1.0E+1184.72.00>1.0E+1146.96.0E+61...

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Abstract

An electrically conductive film is disclosed. According to one embodiment of the present invention, the film includes a plurality of single-walled nanotubes having a particular diameter. The disclosed film demonstrates excellent conductivity and transparency. Methods of preparing the film as well as methods of its use are also disclosed herein.

Description

REFERENCE TO RELATED APPLICATIONS [0001] This application claims priority to U.S. Provisional Application No. 60 / 278,419 entitled “Electrodissipative Transparent Coatings Comprising Single-Wall Nanotubes and Methods for Forming Same” filed Mar. 26, 2001, U.S. Provisional Application No. 60 / 311,810 entitled “EMI IR Materials” filed Aug. 14, 2001, U.S. Provisional Application No. 60 / 311,811 entitled “Biodegradable Film” filed Aug. 14, 2001, and U.S. Provisional Application No. 60 / 311,815 entitled “EMI Optical Materials” filed Aug. 14, 2001, each of which is entirely and specifically incorporated by reference.BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] The present invention relates electrically conductive coatings. [0004] More particularly, the invention relates to transparent electrically conductive coatings comprising carbon nanotubes. [0005] 2. Description of the Related Art [0006] Electrically conductive transparent films are known in the art. In general, su...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H01B1/12B82B1/00B32B7/02B32B9/00B32B27/18C01B31/02C08J5/18C08J7/04C08K3/04C08K7/06C08K7/24C08L101/00C09D5/24C09D7/12C09D201/00H01B1/24H01B5/14
CPCB82Y10/00B82Y30/00H01B1/24C08K2201/013C09D5/24C08K7/24C09D179/08C09D185/02C08K3/041C08J5/18C08J2379/08Y10T428/249942Y10T428/24994Y10T428/249945H01B1/04
Inventor GLATKOWSKI, PAUL J.
Owner GLATKOWSKI PAUL J
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