7367 results about "Powder coating" patented technology

A semiconductor processing apparatus is disclosed, comprising a process chamber configured to contain a heated, gaseous atmosphere, the apparatus further comprising a number of mechanical parts, at least one of which parts is provided at least partly with a heat reflective, amorphous SiO₂ powder coating. Also disclosed is a method for treating a component of a semiconductor processing apparatus, comprising at least partly providing a surface of the component with an amorphous SiO₂ powder coating, and optionally sealing a surface of the applied coating.

The present invention, a powder composition for making powder coatings comprising one or more than one curable polymer or resin and an agglomerate of a core-shell polymer, wherein the agglomerate of a core-shell polymer has an average particle size of from 5 to 190 microns, preferably from 10 to 127 microns. The powders in accordance with the present invention provide a cured powder coating that is flexible, smooth, and which may be applied in a thickness of only from 0.3 to 8 mils. In a preferred embodiment of making a powder in accordance with the present invention, the agglomerate is cryoground to form a reduced agglomerate prior to adding it into a powder as a post-blend or a powder-forming mixture as a preblend. The preferred core-shell polymer for use in accordance with the present invention comprises an acrylic impact modifier having a poly(methyl methacrylate) shell and a poly(butyl acrylate) core. Further, the preferred curable polymer or resin powder is an epoxy resin, wherein the powder composition is a low temperature curing one component powder composition which cures at from 107 to 149 degrees C.

The invention discloses an environmental-protection anti-corrosive heat-dissipation powder paint, and a preparation method and application thereof. The environmental-protection anti-corrosive heat-dissipation powder paint comprises the following raw materials in parts by weight: 40-90 parts of matrix resin, 2-40 parts of curing agent, 0.5-10 parts of carbon nanotube, 0.5-2 parts of additive, 0-4.5 parts of hexagonal boron nitride, 0-15 parts of aluminum nitride, 0-10 parts of magnesium nitride, 0-10 parts of silicon carbide and 5-30 parts of pigment and filler. The composition and proportioning of the raw materials of the powder paint disclosed by the invention are scientific and reasonable. The experimental result indicates that the powder paint has the advantages of favorable heat-dissipation effect, high efficacy enhancement rate (higher than 60%) and favorable cooling effect (more than 20 DEG C), and can effectively solve the problem of poor heat-dissipation effect in the high-power electronic product, thereby prolonging the service life of the electronic product. The powder paint disclosed by the invention is free of organic solvent, and is environment-friendly and safe; the powder paint disclosed by the invention also has favorable comprehensive properties, such as flexibility, hardness, adhesive force and the like, and stable chemical properties; and the coating formed by the powder paint has the advantages of high corrosion resistance and shock resistance, favorable insulation property and wide application range.

Coating compositions for producing hydrophobic or super-hydrophobic surfaces and olephobic or super-olephobic surfaces, and to processes for producing such surfaces. In particular, the present invention relates to hydrophobic or olephobic powder coatings and their use for transforming surfaces of articles into hard-to-wet and self-cleaning surfaces.

A magnetic field is applied to planarize magnetic pigment flakes relative to a surface. Pigment flakes, such as optically variable pigment flakes, are used in a variety of paints, inks, extrusions, powder coatings, and other forms for decorative and security applications. In many applications pigment flakes tend to align parallel to each other and to the surface to which they are applied. If the pigment flakes include a suitable magnetic structure, a magnetic field can be applied to subsequently align the flakes or enhance the alignment of the flakes in the plane of the substrate if the carrier that the flakes are dispersed in is still fluid. In some printing operations, pigment flakes that are applied parallel to the substrate are pulled out of plane when the print screen or printing die is lifted off the substrate. Application of a magnetic field can re-align pigment flakes to the plane of the substrate, enhancing the visual quality of the printed image, especially with optically variable pigments.

A coating system comprises a basecoat of an thermosetting asphalt extended, chemically cross linked-urethane/epoxy hybrid basecoat resting on a substrate, preferably a porous substrate such as concrete or wood that off-gas when coated with a thermoplastic material; and a thermoplastic powder coating topcoat overlying at least the base coat. The thermosetting basecoat composition consisting essentially of, in weight percent based on final formulation, and between 10 and 90% of a petroleum asphalt; between 10 and 90%, of a hydroxy-terminated homopolymer; and between 0.1 and 30% of a functional epoxy reactive diluent for reducing the viscosity of the composition; and further up to 5% of a surfactant for improving surface imperfections, up to 5% of an anti-oxidant; and up to 25% of a thickening agent.

Cycloolefin resin pellets of the present invention comprises a cycloolefin resin pellet and a powdery coating material and/or a liquid coating material, the melting point or the glass transition point of the coating material being 200° C. or lower, and the coating material being adhered onto the surface of the cycloolefin resin pellets, so that the molded product thereof is excellent in transparency.

The invention discloses a packaging material for a photovoltaic module. The packaging material comprises the following raw materials in parts by weight: 30-50 parts of fiber cloth produced from fiber material through weaving; and 50-70 parts of acrylic powder coating including acrylic resins and a curing agent. The acrylic powder coating is evenly spread on the fiber cloth. The packaging material is low in manufacturing cost. While meeting the prerequisites of resistance to ultraviolet, aging, impact and fire which are standard requirements of the photovoltaic industry, the packaging material solves the problem of lightweight photovoltaic module packaging material, makes installation more convenient, reduces the installation cost, and thus is very suitable for large-scale promotion and application in the photovoltaic field. The invention also discloses a preparation method of the packaging material for a photovoltaic module. The method meets installation requirement for changing the packaging size of a photovoltaic module at will to adapt to different buildings and thus further facilitates installation and application of photovoltaic modules.

The present invention is directed to a process for producing micropulp. The process includes contacting organic fibers with a medium comprising a liquid component and a solid component, agitating the medium and the organic fibers to transform the organic fibers into the micropulp dispersed in the medium. If desired, the slurry of the micropulp in the liquid component can be used or the micropulp can be separated from the medium. The micropulp can be readily incorporated into coating compositions such as those used in automotive OEM or refinish applications. The micropulp can also be incorporated into powder coating applications or as a thixotrope or reinforcement in polymer formulations.

The present invention relates to an air filtration system and a method for making a photocatalytic oxidation substrate by powder coating a photocatalyst onto a metal substrate.

The invention discloses a packaging material for a photovoltaic module. The packaging material is prepared from the following raw materials in parts by weight: 30-50 parts of fiber cloth woven by adopting a fiber material, and 50-70 parts of extra-weather-resistance polyester powder coating which is prepared from extra-weather-resistance polyester resin and a curing agent, wherein the fiber cloth is uniformly coated with the extra-weather-resistance polyester powder coating. The packaging material has low manufacture cost, can be used for effectively realizing light weight of the packaging material of a photovoltaic module, improving the assembly convenience and reducing assembly cost, and is suitable for large-scale popularization and application in the photovoltaic field. The invention further discloses a method for preparing the packaging material for the photovoltaic module, which realizes arbitrary size change of the photovoltaic module to adapt to the assembly requirement of different constructions, and the assembly application of the photovoltaic module can be further facilitated.

A process for producing a proppant particulate substrate having a coating layer thereon including the step of blending a proppant particulate substrate with a powder coating composition at a temperature sufficient to cause the powder coating composition to coat the proppant particulate substrate with a powder coating; and a proppant particulate substrate coated by such a process.

A powder coating composition comprising at least about 0.1% by weight of a reaction product of an aminoplast and a compound having one carbamate group has improved smoothness.

The present invention relates to methods for conditioning a surface before application of powder coating, methods for improving powder coating transfer to a surface, methods for reducing defects on powder painted surfaces, methods for providing homogenous surface charge on a surface, methods for increasing adhesion of powder paint to a surface, and surface conditioners for use in such methods.

It is an object of the present invention to provide a powder coating composition, which can exhibit a sufficient hiding power, a corrosion resistance and an excellent appearance and can reduce a coating process and is particularly suitable for coating of an aluminum wheel because of its high low temperature curability and has excellent storage stability, and a coating method of an aluminum wheel using the same. A powder coating composition consisting of a powder coating composition particle, wherein said powder coating composition particle comprises at least a thermosetting resin powder formed by binding a metallic pigment with a binder and

said thermosetting resin powder comprises a β-hydroxyalkylamide curing agent expressed by the following general formula (1):

wherein R¹ represents a hydrogen atom, a methyl group or an ethyl group, R² represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms or HOCH(R¹)CH₂—, and A represents a bivalent hydrocarbon group.

Methods are described that have the capability of producing submicron/nanoscale particles, in some embodiments dispersible, at high production rates. In some embodiments, the methods result in the production of particles with an average diameter less than about 75 nanometers that are produced at a rate of at least about 35 grams per hour. In other embodiments, the particles are highly uniform. These methods can be used to form particle collections and/or powder coatings. Powder coatings and corresponding methods are described based on the deposition of highly uniform submicron/nanoscale particles.

Powder coating compositions comprising at least one thermosetting resin and at least one poly(phenylene ether) are disclosed.

The invention relates to use of a tetrafluoroethylene/perfluoroolefin copolymer applied as a primer powder in conjunction with a powder overcoat of tetrafluoroethylene/perfluoro (vinyl alkyl ether) copolymer, also known as perfluoroalkoxy polymer (PFA), which when baked onto a substrate gives superior and more durable adhesion of the coating system to the substrate. The quality of the adhesion is measured by a boiling water peel test.

A material supply for a material application system such as a powder coating application system includes a feed hopper in the form of a duct. The duct is connectable to negative pressure during a color change process and is disconnected from the negative pressure during a spray application process. The negative pressure can be provided from a powder overspray recovery system such as an after filter blower. Dampers are provided to control air flow through the hopper duct and to allow the duct to be at ambient pressure during a supply mode of operation. The hopper duct also includes a suction interface for pumps, in the form of a siphon ring, as well as a fluidizing function. A removable sieve is provided with an optional vibration feature. Powder may be added to the duct via an access door or transfer pumps for new powder and/or reclaimed powder overspray.

The present invention relates to a method and an apparatus by which powder is evenly dispersed and is coated on a substrate uniformly and continuously so that a uniform layer may be formed. More specifically the present invention provides a method and an apparatus for forming a coating layer that powder is coated on an entire surface of a substrate uniformly and continuously, regardless of the material or the size of the substrate, as a uniform amount of powder entrained on the carrier air which is generated by carrier air and powder transported to a carrier pipe at a certain rate is consistently fed in to a nozzle, regardless of the size, morphology, and specific weight of the powder particles.