602 results about "Electrostatic coating" patented technology

A method for electrostatic coating of medical devices such as stents and balloons is described. The method includes applying a composition to a polymeric component of a medical device which has little or no conductivity. The polymeric component could be a material from which the body or a strut of the stent is made or could be a polymeric coating pre-applied on the stent. The polymeric component could be the balloon wall. A charge can then be applied to the polymeric component or the polymeric component can be grounded. Charged particles of drugs, polymers, biobeneficial agents, or any combination of these can then be electrostatically deposited on the medical device or the coating on the medical device. One example of the composition is iodine, iodine, iodide, iodate, a complex or salt thereof which can also impart imaging capabilities to the medical device.

The present invention concerns bio-compatible medical devices and process for preparation thereof. The process includes electrostatically forming a first layer on a structure. The first layer can include a combination of at least one active substance and at least one polymer and/or binder. A second layer is formed on the structure to cover the first layer. The second layer can be a solvent or a combination of solvents. The evaporation of the second layer causes the first layer to reflow and bind to the structure.

A process is described in which a nonconductive molding is electrostatically coated with a thermoplastic or crosslinkable copolyamide hot-melt adhesive. The hot-melt adhesive may be used as a fine powder with a particle size between 1 and 200 mum and have a melting point up to 160° C.

A system for electrostatically coating particles is provided. The system is particularly well suited for coating charged drug delivery particles (e.g., nanoparticles, microparticles) with a coating of opposite charge. The coating may include a targeting moiety such as a small molecule ligand, peptide, protein, aptamer, etc. The coated particles are biodegradable and/or biocompatible, have a near neutral zeta (ξ) potential, and are stable in serum. The invention also provides pharmaceutical compositions and kits including the inventive coated particles. Methods of preparing and using the inventive particles are also included.

The invention discloses a super-thick copper circuit board solder resisting processing method, comprising the following steps: pasting two layers of dry films with the thickness of 50 mu m when an outer-layer graph is formed; adopting a currently popular electrostatic coating process to replace the traditional plane solder resisting printing processing technique during solder resisting; adopting a manner of four times of spraying, two times of pre-baking, exposing, developing and solidifying during electrostatic spraying; obmitting the processes of pre-baking, exposing, developing and solidifying between the previous two times and the following two times of electrostatic spraying but adopting a cold wind blowing manner, wherein the thickness of the outer copper foil processed by the method is 12oz; and the printing ink thickness of the circuit board corner is 8mu m. The super-thick copper circuit board processed by the process shortens the production flow, lowers the production cost, also avoids the problem of bubbles generation caused by the fact that the air between the line can not exhaused completely in the plane printing; and as for solidifying, a segmented solidifying manner from low temperature to high temperature is adopted, which can avoid the printing ink from cracking because of over-thick printing ink, and improve the reliability of the circuit board.

An abradable dry powder coating (22) composition for coating onto a surface (12) for subsequent curing to form into an abradable coating, including a powder (16) formed of uncured thermoset resin with at least 15 volume percent filler, wherein the filler does not substantially melt below the cure temperature of the resin. Method for making the coating composition includes melt-mixing the thermoset resin with at least 15 volume percent of filler, cooling the resulting mass composite, and then breaking the cooled mass composite into powder particles (16). Method of coating an article with an abradable coating includes applying the dry composite powder with the filler therein onto a substrate and curing the dry powder composition, preferably by electrostatic coating. An article is also disclosed which is coated with the abradable coating.

An electrically conductive resin composition comprising a polyamide, a polyphenylene ether, an impact modifier and an electrically conductive filler, not less than 50 wt. % of all of the filler used being preliminarily compounded with a mixture containing the impact modifier and the polyphenylene ether, wherein electrical conductivity having a level in which electrostatic coating is possible, a low coefficient of linear expansion and high surface appearance have been accomplished at the same time, and wherein generation of fines caused by pelletizing on extruding has been suppressed.

A bar armor system is provided for reducing damage caused by RPGs launched towards a vehicle. The bar armor system includes at least one bar array, comprised of lateral bars and vertical bars, wherein the lateral bars are set in predetermined positions so as to reduce the possibility of shaped charges being directed towards the target vehicle. Tubular shaft retainers are provided to be positioned in annular openings in the vertical bars. The lateral bars can be of a round or hexagonal cross-section, and when hexagonal lateral bars are employed, the flat surfaces of the cross-section are positioned horizontally by the tubular shaft retainers so as to minimize the area presented to an oncoming RPG, particularly when the RPG strikes at a non-normal incidence. Push washers can be employed at the outside surfaces of the vertical bars so as to hold them in position. A mounting system is provided that is capable of positioning the bar armor system at close distances to the vehicle so that the overall size and weight of the vehicle is not unduly increased by the bar armor system. The mounts can include rotary latches to provide easy installation and removal. The system can also be of an electrically-conductive unified composition so that efficient electrostatic coating techniques can be used to cover the system. The system can also be provided in the form of kits for ready installation and for more economical repair.

A flake pigment according to the present invention includes a flake particle, a single-layer or multiple-layer coat covering a surface of the flake particle, and a fine particle. An outermost layer of the coat includes a copolymer including one or more type of first bond unit originating from a fluoric polymerizable monomer having fluorine and one or more type of second bond unit originating from a polymerizable monomer having phosphate group. The fine particle is fixed with the outermost layer being interposed and has a characteristic to provide triboelectrification characteristics to the flake pigment.

The invention discloses an electrostatic conductive coating, and belongs to the field of coatings. The electrostatic conductive coating comprises the following components by weight: 25-85% of high-molecular resin, 0.1-60% of an electrostatic conductive filling material, 1-60% of a solvent, and 10-50% of a curing agent; the electrostatic conductive filling material comprises at least one kind of material, which is selected from metal fibers including copper, aluminium, zinc, iron, silver, lead, titanium and magnesium. The metal fiber forms a conductive network, which is used for improving electrostatic conduction performance of the electrostatic conductive coating, and the conductive network can be used as reinforcement for enhancing strength of the electrostatic conductive coating, so that strength, toughness, compactness and wear resistance of the electrostatic conductive coating are improved. Cooperative complex formulation between components for preparing the electrostatic conductive coating is effected, so that an electrostatic conductive anticorrosion coating with high strength and high toughness is formed by the electrostatic conductive coating which is provided by the embodiment.

An implantable medical lead for transmitting electrical signals between an implantable medical device and selected body tissue comprises a lead body having a distal end portion, a proximal end and an electrically insulating, elongated housing connecting the distal end portion and the proximal end. The proximal end of the lead body carries an electrical connector assembly adapted to be electrically connected to the implantable medical device and the distal end portion of the lead body carries at least one electrode electrically coupled to a terminal contact on the connector assembly. The lead comprises at least one surface susceptible during use of the lead to the accumulation of electrostatic charges, the at least one surface having a coating comprising carbon nanotubes.

The invention relates to a method for directly preparing a metal oxide/silver nanowire composite conductive network, belongs to the technical field of transparent conductive thin films and anti-static coating layers, and aims to solve the technical problem that the technology for preparing a silver nanowire/inorganic metal oxide composite conductive thin film by two steps in the prior art is complicated. The method comprises the following steps: preparing a soluble metal oxide precursor solution; mixing the prepared metal oxide precursor solution with dispersion liquid of a silver nanowire to obtain soluble metal oxide/silver nanowire mixing dispersion liquid, and forming a film on the upper surface of a substrate by a wet processing technology; finally performing high-temperature annealing, ultraviolet ozone irradiation or oxygen plasma treatment to obtain the metal oxide/silver nanowire composite conductive network. According to the method, the metal oxide/silver nanowire composite conductive network is prepared in one step, so that the preparation technology is greatly simplified, and the production cost is reduced; the prepared composite conductive network is high in mechanical strength, higher in visible light transmittance and lower in square resistivity.

A method for manufacturing an image displaying medium is provided in that a display element in the form of powder can be filled between facing substrates. After patterning spacer particles on a first flat substrate supplied from a first film roller set on a first roller shaft by a first electrostatic coating device, they are fixed by a first fixing device to form a spacer on the first flat substrate, and then black particles are coated, on the entire surface by a second electrostatic coating device. After coating white particles thereon by a third electrostatic coating device, the black particles and the white particles on the upper part of the spacer are removed by a blade, and a second flat substrate supplied from a second film roller set on a second roller shaft is superimposed, followed by fixing the upper part of the spacer and the second flat substrate by a second fixing device.

A method for edge sealing a fiber-reinforced component formed from a carbon fiber-reinforced thermoplastic or duroplastic plastic material includes electrostatic coating of at least one section of an edge of the component with a thermoplastic powder so as to form a powder coating; and fusing and cross-linking the powder coating in a furnace so as to create a smooth edge seal.

The invention discloses a conducting primer for electrostatic coating of a plastic base material and a preparation method thereof. The conducting primer comprises the following components in parts by weight: 5-10 parts of thermoplastic acrylic resin, 5-10 parts of polyester resin, 0.5-2 parts of epoxy resin, 40-60 parts of mixed solvent, 0-2 parts of pigment dispersing agent, 3-10 parts of rutile titanium dioxide pigment, 0.5-3 parts of conductive carbon black pigment, 0.5-2 parts of gas-phase silicon dioxide, 10-20 parts of polyolefin resin, 0-0.5 part of leveling agent, 0-0.5 part of defoaming agent and 5-15 parts of high-boiling-point aromatic hydrocarbon solvent. The invention also comprises the preparation method of the conducting primer for electrostatic coating of the plastic base material. The conducting primer disclosed by the invention has the advantages of good single-component stability, good adhesive force with multiple plastic base materials, good water resistance and humidity-heat resistance, excellent heat-shock resistance and lower cost.

The invention relates to an indoor decorative metal powder coating, pertaining to the powder coating technique field of electrostatic coating. The coating is made from raw materials according to the following weight proportion: 20 to 30 percent of epoxy resin (E-12), 20 to 30 percent of indoor polyester resin, 0.8 to 5 percent of flow agent, 1 to 2 percent of metal pigment PCR214, 0.1 to 0.3 percent of metal pigment PC100, 0 to 2 percent of metal pigment PCR212, 0 to 50 percent of filler, 0.1 to 5 percent of conventional pigment, 0.2 to 0.4 percent of benzoin and 0.1 to 0.2 percent of fumed silica, wherein, the resins, the conventional pigment, the filler and various addition agents are all common types and specifications in powder coating. The invention has the beneficial effects of simple production and application, innocuity, no pollution, and rich raw material resources with low cost.

The invention relates to cold-spraying-zinc anticorrosive paint with graphene and a method for preparing the cold-spraying-zinc anticorrosive paint. The cold-spraying-zinc anticorrosive paint comprises, by weight, 75-85 parts of zinc powder, 2-3 parts of organic resin, 15-25 parts of solvents, 0.1-2 parts of the graphene, 0.1-1 part of dispersing agents and 0.1-1 part of anti-settling agents. The method for preparing the cold-spraying-zinc anticorrosive paint includes weighing raw materials according to the weight, mixing the graphene, the dispersing agents and a part of the solvents with one another and ultrasonically uniformly dispersing the graphene, the dispersing agents and the solvents; mixing the organic resin with the residual solvents for dissolving; adding dispersed graphene liquid into dissolved resin liquid, and uniformly dispersing at a high speed to obtain mixed liquid; adding the zinc powder and the anti-settling agents into the mixed liquid, and uniformly dispersing at a high speed to obtain the cold-spraying-zinc anticorrosive paint with the graphene. The cold-spraying-zinc anticorrosive paint and the method have the advantages that coatings are good in adhesion and impact resistance and excellent in anticorrosive performance; the cold-spraying-zinc anticorrosive paint comprises single components and is convenient to construct; the cold-spraying-zinc anticorrosive paint is excellent in antistatic property and applicable to the antistatic coatings.

The invention relates to a color antistatic PVC (Polyvinyl Chloride) conveyor belt for the electronic industry and a manufacture method. The color antistatic PVC conveyor belt for electronic industry comprises a PVC surface layer and base materials, and is sequentially formed by an antistatic layer, a surface layer, a composite layer and a bottom layer from top to bottom, wherein the surface layer comprises base materials containing a PVC coating layer; and the bottom layer comprises base materials containing a PVC coating layer, and the base materials of the bottom layer are fabric mixed with at least 5 to 10% of conductive fibers. The manufacture method comprises the steps of: coating PVC paste on the upper bottom of the base materials; and coating the antistatic coat layer on at least one PVC surface layer. The base materials are the fabric mixed with 5 to 10% of conductive fibers, the surface resistance is 107 omega, the antistatic coat layer comprises 100 parts by weight of PVC paste resin, 50 to 70 parts by weight of plasticizing agents, 2 to 3 parts by weight of stabilizing agents, 10 to 15 parts by weight of antistatic agents and a proper amount of color paste, and the antistatic agents are semitransparent nonionic type antistatic agents containing glycerol single fatty aliphatic esters. Compared with foreign products, the color antistatic PVC conveyor belt has the advantages of low cost, adjustable finished product color and excellent antistatic performance.