6304results about "Electrically-conductive paints" patented technology

This invention relates to flexible, transparent and conductive coatings and films formed using single wall carbon nanotubes and polymer binders. Preferably, coatings and films are formed from carbon nanotubes (CNT) applied to transparent substrates forming one or multiple conductive layers at nanometer level of thickness. Polymer binders are applied to the CNT network coating having an open structure to provide protection through infiltration. This provides for the enhancement of properties such as moisture resistance, thermal resistance, abrasion resistance and interfacial adhesion. Polymers may be thermoplastics or thermosets, or any combination of both. Polymers may also be insulative or inherently electrical conductive, or any combination of both. Polymers may comprise single or multiple layers as a basecoat underneath a CNT coating, or a topcoat above a CNT coating, or combination of the basecoat and the topcoat forming a sandwich structure. Binder coating thickness can be adjusted by changing binder concentration, coating speed and/or other process conditions. Resulting films and articles can be used as transparent conductors for flat panel display, touch screen and other electronic devices.

The object of the present invention is to provide a carbon nanotube composition that does not impair the characteristics of the carbon nanotubes itself, allows the carbon nanotubes to be dispersed or solubilized in a solvent, does not cause separation or aggregation of the carbon nanotubes even during long-term storage, has superior electrical conductivity, film formability and moldability, can be easily coated or covered onto a base material, and the resulting coated film has superior moisture resistance, weather resistance and hardness; a composite having a coated film composed thereof; and, their production methods. In order to achieve this object, the present invention provides a carbon nanotube composition that contains a conducting polymer (a) or heterocyclic compound trimer (i), a solvent (b) and carbon nanotubes (c), and may additionally contain a high molecular weight compound (d), a basic compound (e), a surfactant (f), a silane coupling agent (g) and colloidal silica (h) as necessary; a composite having a coated film composed of the composition; and, their production methods.

Described herein are precursors and methods for forming silicon-containing films. In one aspect, the precursor comprises a compound represented by one of following Formulae A through E below:

In one particular embodiment, the organoaminosilane precursors are effective for a low temperature (e.g., 350° C. or less), atomic layer deposition (ALD) or plasma enhanced atomic layer deposition (PEALD) of a silicon-containing film. In addition, described herein is a composition comprising an organoaminosilane described herein wherein the organoaminosilane is substantially free of at least one selected from the amines, halides (e.g., Cl, F, I, Br), higher molecular weight species, and trace metals.

Non-hydroxyalkylated cyclodextrins are disclosed wherein at least one primary alcohol function (CH2OH) is substituted, the -OH portion being replaced by a substituent with formula -O-CO-R or -NR1R2, where:R, R1 and R2 independently represent a linear or cyclic, saturated or unsaturated, hydroxylated or non-hydroxylated alkyl group containing 1 to 30 carbon atoms, preferably 1 to 22 carbon atoms, more preferably a fatty chain containing 2 to 22 carbon atoms. These cyclodextrins are used as vectors for at least one active ingredient, in particular to encourage tissue penetration, in a cosmetic application, or for the production of pharmaceutical compositions, in particular dermopharmaceuticals.

Surface films, paints, or primers can be used in preparing aircraft structural composites that may be exposed to lightning strikes. Methods for making and using these films, paints or primers are also disclosed. The surface film can include a thermoset resin or polymer, e.g., an epoxy resin and/or a thermoplastic polymer, which can be cured, bonded, or painted on the composite structure. Low-density electrically conductive materials are disclosed, such as carbon nanofiber, copper powder, metal coated microspheres, metal-coated carbon nanotubes, single wall carbon nanotubes, graphite nanoplatelets and the like, that can be uniformly dispersed throughout or on the film. Low density conductive materials can include metal screens, optionally in combination with carbon nanofibers.

A conductive composite material is provided, including: a base layer; a conductive fiber thin-film made of conductive fiber and formed on the base layer; and a mixture layer in which part of the conductive fiber is inserted into part of the base layer.

A functionalised graphene oxide and a method of making a functionalised graphene oxide comprising: (i) oxidizing graphite to form graphite oxide wherein the graphene sheets which make up the graphite independently of each other have a basal plane fraction of carbon atoms in the sp²-hybridised state between 0.1 and 0.9, wherein the remainder fraction comprises sp³-hybridised carbon atoms which are bonded to oxygen groups selected from hydroxyl and/or epoxy and/or carboxylic acid; and (ii) exfoliating and in-situ functionalizing the graphite oxide surface with one or more functional groups such that functionalisation of the surface is effected at a concentration greater than one functional group per 100 carbon atoms and less than one functional group per six carbon atoms. The functionalised graphene oxide is dispersible at high concentrations in appropriate solvents without aggregating or precipitating over extended periods at room temperature.

There is provided a conductive sintered layer forming composition and a conductive sintered layer forming method that can lower heating temperature and shorten heating time for a process of accelerating sintering or bonding by sintering of metal nano-particles coated with an organic substance. The conductive sintered layer forming composition may be obtained by utilizing a phenomenon that particles may be sintered at low temperature by mixing silver oxide with metal particles coated with the organic substance and having a grain size of 1 nm to 5 μm as compared to sintering each simple substance. The conductive sintered layer forming composition of the invention is characterized in that it contains the metal particles whose surface is coated with the organic substance and whose grain size is 1 nm to 5 μm and the silver oxide particles.

The present invention relates to compositions for functional films, and more particularly to compositions for functional films such as a heat ray screening film compatible with hydrolic or alcoholic and anti-hydrolic resin binder, a near infrared screening film, a chrominance correcting film, a conductive film, a magnetic film, a ferromagnetic film, a dielectric film, a ferroelectric film, an electrochromic film, an electroluminescence film, an insulating film, a reflecting film, a reflection preventing film, a catalyst film, a photocatalyst film, a light selectively absorbing film, a hard film, and a heat resisting film, films formed therefrom, and a method of forming the compositions and the films.

The present invention relates to a variety of conductive ink compositions comprising a metal complex compound having a special structure and an additive and a method for preparing the same, more particularly to conductive ink compositions comprising a metal complex compound obtained by reacting a metal or metal compound with an ammonium carbamate- or ammonium carbonate-based compound and an additive and a method for preparing the same.

Compositions comprising at least one polymer binder, graphene sheets, and graphite, wherein the ratio by weight of graphite to graphene sheets is from about 40:60 to about 98:2.

Disclosed is a carbon nanotube-containing composition which contains a carbon nanotube and a urethane compound obtained by a reaction between a hydroxyl group-containing (meth)acrylate and a isocyanate compound. Also disclosed is a composite having a coating film or a cured film composed of the carbon nanotube-containing composition on at least one surface of a base material. The carbon nanotube-containing composition and the composite are excellent in electrical conductivity, film-formability, moldability, and transparency without deteriorating the characteristic properties of the carbon nanotube itself.

An electrically conductive coating is disclosed. According to one embodiment of the present invention, the coating includes a plurality of single-wall or multi-walled Carbon nanotubes having a diameter less than 20 nanometers. The disclosed coating demonstrates excellent conductivity and smooth surface morphology. Methods of preparing the coating as well as methods of its use are also disclosed herein.

The invention relates to a conductive heat-conductive graphene slurry and a coating. The conductive heat-conductive graphene slurry comprises the following raw materials: 0.1-90wt% of conductive heat-conductive graphene slurry ( consisting of 3-20wt% of less graphene, 0-80wt% of base solvent, 0-80wt% of base resin), 0-60wt% of filler, 0-10% of dispersing agent, 10-60wt% of resin, 10-60wt% of curing agent, and 30-70wt% of solvent, wherein not only can the graphene slurry be antistatic, conductive and heat-conducting despite of less addition amount, but also the surface of a coated article is smoother and finer, firmer and more durable; compared with the addition amount of the existing conductive material, the conductive heat-conductive graphene slurry is lower in addition amount and can also reach lower resistivity.

The invention belongs to the corrosion protective coating technique field and provides an oil resistance (solvent) and temperature resistance electrostatic conducting corrosion protective coating and a preparation method thereof. The coating is mainly made by raw components by weight percentage of 20-35 percent of resinI which is used as basic material, 0-15 percent of modified resin II, 15-30 percent of conductive fillers, 1-3 percent of coupling agent, 8-20 percent of fillers, 10-15 percent of solvent, 2-10 percent of plasticizer, 0.5-1 percent of defoamer, 0.5-1 percent of flatting agent and 6-15 percent of curing agent. The coating is prepared according to the following steps: the resin I, the modified resin II, the coupling agent, the plasticizer, the flatting agent and the defoamer are put in a distributing tank. And part of mixed solvent is added to be stirred and distributed uniformly. The fillers are added proportionally and are put in a sand mill for sand milling after being dispersed and stirred uniformly at high speed, so as to obtain upper grinding pigment paste. The conductive fillers and the rest mixed solvent are added at low stirring speed. The conductive fillers are totally blended into the upper grinding pigment paste and stirring is carried out at middle speed, the viscosity is adjusted to be qualified and the fillers are filtered to obtain a qualified component A product. The curing agent is carried out subpackage according to proportion.

Provided are a method of isolating and purifying metal nanowires from a crude and complex reaction mixture that includes relatively high aspect ratio nanostructures as well as nanostructures of low aspect ratio shapes, and conductive films made of the purified nanostructures.

We report a method of preparation of highly elastic graphene oxide films, and their transformation into graphene oxide fibers and electrically conductive graphene fibers by spinning. Methods typically include: 1) oxidation of graphite to graphene oxide, 2) preparation of graphene oxide slurry with high solid contents and residues of sulfuric acid impurities. 3) preparation of large area films by bar-coating or dropcasting the graphene oxide dispersion and drying at low temperature. 4) spinning the graphene oxide film into a fiber, and 5) thermal or chemical reduction of the graphene oxide fiber into an electrically conductive graphene fiber. The resulting films and fiber have excellent mechanical properties, improved morphology as compared with current graphene oxide fibers, high electrical conductivity upon thermal reduction, and improved field emission properties.

The present invention relates to a variety of conductive ink compositions comprising a metal complex compound having a special structure and an additive and a method for preparing the same, more particularly to conductive ink compositions comprising a metal complex compound obtained by reacting a metal or metal compound with an ammonium carbamate- or ammonium carbonate-based compound and an additive and a method for preparing the same.

The invention surprisingly finds that when a suitable binder including a suitable filler is used during the high temperature treatment of a curing process, the coating materials of the invention change in such a manner that electrically conducting reactive layers are formed that allow welding and especially spot welding together with the metal substrate even after treatment at temperatures of more than 800 DEG C.