• 专利标题:   Electrically conductive composition useful e.g. in article which is electromagnetic shield, conductive gasket, wire covering, cable covering, static dissipative covering or conductor, comprises polymer, graphene sheets and carbon black.
  • 专利号:   US2016035456-A1
  • 发明人:   SAURO R J, SCHEFFER D F
  • 专利权人:   VORBECK MATERIALS CORP
  • 国际专利分类:   H01B001/24
  • 专利详细信息:   US2016035456-A1 04 Feb 2016 H01B-001/24 201614 Pages: 11 English
  • 申请详细信息:   US2016035456-A1 US812582 29 Jul 2015
  • 优先权号:   US031143P, US812582

▎ 摘  要

NOVELTY - Electrically conductive composition comprises a polymer, graphene sheets and carbon black, where the ratio by weight of the graphene sheets to carbon black is 1:2-1:20. USE - The electrically conductive composition is useful: in an article which is an electromagnetic shield, a conductive gasket, a wire covering, a cable covering, a static dissipative covering, or a conductor (all claimed); for the passivation of surfaces, such as metal (e.g. steel and aluminum) surfaces, including exterior structures such as bridges and buildings; in UV radiation resistant coatings, abrasion resistant coatings, coatings having permeation resistance to liquids (such as hydrocarbon, alcohols and water) and/or gases, electrically conductive coatings, static dissipative coatings, and blast and impact resistant coatings; to make fabrics having electrical conductivity; in solar cell applications, solar energy capture applications, signage, flat panel displays, flexible displays, including LED, organic LED, and polymer LED displays, backplanes and frontplanes for displays and lighting including electroluminescent and organic LED lighting, where the displays is used as components of portable electronic devices, such as computers, cellular telephones, games, global positioning system receivers, personal digital assistants, music players, games, calculators, artificial paper and reading devices; in packaging and/or to make labels; in inventory control and anti-counterfeiting applications (such as for pharmaceuticals) including package labels; to make smart packaging and labels (such as for marketing and advertisement, information gathering, inventory control, and information display); to form a Faraday cage in packaging, such as for electronic components; on electrical and electronic devices and components, such as housings, to provide electromagnetic interference shielding properties; in micro-devices (such as microelectromechanical systems devices) including to provide antistatic coatings; in the manufacture of housings, antennas and other components of portable electronic devices, such as computers, cellular telephones, games, navigation systems, personal digital assistants, music players, games, calculators, radios, artificial paper and reading devices; to form thermally conductive channels on substrates or to form membranes having desired flow properties and porosities; to form three-dimensional printed prototypes; and to make printed electronic devices. ADVANTAGE - The electrically conductive composition: has a surface resistance of not greater than 40 Omega /square; has a surface resistance of less than 50 Omega /square; is stiffer compared to an unfilled electrically conductive composition that lacks the graphene sheets (claimed); and provides the article with improved anisotropic thermal and/or electrical conductivities. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an article comprising the electrically conductive composition.