Patent application number | Description | Published |
20080213498 | Reinforced composite with a tow of fibers and process for the preparation thereof - A graphite coated tow of fibers having exfoliated and pulverized graphite platelets coated on an outer surface of the fibers are provided. A process is provided for surface coating of the graphite platelets onto the fibers. The graphite coated tow of fibers are used to produce a reinforced composite material. Reinforced composite materials incorporating the graphite coated fibers can be electrostatically painted without using a conductive primer on a surface to be painted. | 09-04-2008 |
20080280031 | Conductive coatings produced by monolayer deposition on surfaces - Low resistivity graphite coated fibers having exfoliated and pulverized graphite platelets coated on an outer surface of electrically insulating fibers are provided. Various methods are also provided for surface coating of the graphite platelets onto the insulating fibers which are provided to increase the glass fiber surface conductivity. The graphite coated glass fibers can be used to produce reinforced composite materials. Reinforced composite materials incorporating the graphite coated fibers can be electrostatically painted without using a conductive primer. | 11-13-2008 |
20090311436 | Conductive composite materials with graphite coated particles - Low resistivity graphite coated particles having exfoliated and pulverized graphite platelets coated on an outer surface of high resistivity particles are provided. Various methods are also provided for surface coating of the graphite platelets onto the particles to increase particle conductivity. The graphite coated particles can be used to produce reinforced composite materials. Reinforced composite materials incorporating the graphite coated particles can be electrostatically painted without using a conductive primer on the composite. | 12-17-2009 |
20100052995 | MICROPATTERNING OF CONDUCTIVE GRAPHITE PARTICLES USING MICROCONTACT PRINTING - Methods involve a combination of polyelectrolyte multilayer (PEM) coating or silane self assembly on a substrate; microcontact printing; and conductive graphite particles, especially size controlled highly conductive exfoliated graphite nanoplatelets. The conductive graphite particles are coated with a charged polymer such as sulfonated polystyrene. The graphite particles are patterned using microcontact printing and intact pattern transfer on a substrate that has an oppositely-charged surface. The method allows for conductive organic patterning on both flat and curved surfaces and can be used in microelectronic device fabrication. | 03-04-2010 |
20100092809 | Electrically conductive, optically transparent films of exfoliated graphite nanoparticles and methods of making the same - Fabrication techniques are disclosed for the formation of electrically conductive, optically transparent films of exfoliated graphite nanoparticles (EGN). The techniques allow the controlled deposition of EGN nanoplatelets (graphene sheets) and other nanoparticles (e.g., metals, metal oxides) in compact monolayer or multilayer film structures. The compact films have high electrical conductivities and optical transparencies in the visible spectrum of electromagnetic radiation. A first method relates to the deposition of nanoparticles onto a substrate from a bulk suspension using a convective assembly technique. A second method relates to the suspension deposition of EGN nanoplatelets from a from a liquid-liquid interface onto a substrate. Both methods can be used to form EGN film-coated substrates. The second method also can be used to form multilayer, free-standing, defect-free EGN films. The processes have the potential to produce transparent conductors as a replacement for indium tin oxide (ITO) and fluorine tin oxide (FTO) in optoelectronics applications. | 04-15-2010 |
20100204072 | Nanoparticle graphite-based minimum quantity lubrication method and composition - A lubricant composition is disclosed that includes (a) a machining oil and (b) an exfoliated graphite nanoparticle (EGN) material stably dispersed in the machining oil. The lubricant composition is a stable suspension and is suitable for use as a liquid lubricant in a Minimum Quantity Lubrication (MQL) process. In the MQL process, the lubricant composition is applied/transferred to a worksite in the form of a mist. The presence of the EGN material in the lubricant composition provides high-temperature stability and lubricity under MQL conditions. A very small amount is transferred especially at high cutting speeds where the mist of the machining oil evaporates, but the EGN material remains on the surface to provide lubricity. Any operation involving machining can benefit from this lubricant composition. The method provides important benefits of reducing chipping on cutting tools and providing the additional lubricity especially when the cutting become very hot and thus extending tool life. | 08-12-2010 |
20100222211 | Compositions of nanoparticles on solid surfaces - A method for producing nanoparticles on a substrate using a metal precursor in an ionic liquid and microwave heating is described. The composite compositions are useful as catalysts for chemical reactions, fuel cell, supercapacitor and battery components, and the like. | 09-02-2010 |
20100314248 | RENEWABLE BIOELECTRONIC INTERFACE FOR ELECTROBIOCATALYTIC REACTOR - An inexpensive, easily renewable bioelectronic device useful for bioreactors, biosensors, and biofuel cells includes an electrically conductive carbon electrode and a bioelectronic interface bonded to a surface of the electrically conductive carbon electrode, wherein the bioelectronic interface includes catalytically active material that is electrostatically bound directly or indirectly to the electrically conductive carbon electrode to facilitate easy removal upon a change in pH, thereby allowing easy regeneration of the bioelectronic interface. | 12-16-2010 |
20130009825 | MICROPATTERNING OF CONDUCTIVE GRAPHITE PARTICLES USING MICROCONTACT PRINTING - Methods involve a combination of polyelectrolyte multilayer (PEM) coating or silane self assembly on a substrate; microcontact printing; and conductive graphite particles, especially size controlled highly conductive exfoliated graphite nanoplatelets. The conductive graphite particles are coated with a charged polymer such as sulfonated polystyrene. The graphite particles are patterned using microcontact printing and intact pattern transfer on a substrate that has an oppositely-charged surface. The method allows for conductive organic patterning on both flat and curved surfaces and can be used in microelectronic device fabrication. | 01-10-2013 |
20140001420 | Method of preparing metal nanoparticles | 01-02-2014 |