580 results about "Metallic substrate" patented technology

The invention relates to environment-friendly hydrophobic ink and a preparation method thereof, and belongs to the technical field of water-based ink. A copolymerization modifier capable of being combined in a water-based polyacrylate emulsion in an initiation polymerization mode in the stage of preparing the modified water-based polyacrylate emulsion is prepared, and an o-hydroxy aromatic ketone structure in the copolymerization modifier can endow water-based ink with lasting ultraviolet absorption performance; the trifluoromethyl structure can reduce the surface energy of the water-based ink, and the benzimidazole ring structure can form stable coordinate bonds with metal ions, so that the bonding performance of the water-based ink and a metal substrate is enhanced; when the copolymerization modifier is used for modifying the water-based polyacrylate emulsion, the long-term performance, the hydrophobic and oil-resistant performance and the adhesion performance on the surface of a metal base material of the finished water-based ink can be effectively improved.

The invention relates to the technical field of photoresists, in particular to a positive chemical amplification type photoresist as well as a preparation method, a use method and application thereof, and aims to solve the problems that the photoresist is easily subjected to bottom residue on a metal substrate after development, and the etching yield is poor after metal electroplating in a subsequent process. The key points of the technical scheme are as follows: the mixed resin comprises first resin and second resin; an initiator, wherein the initiator comprises a photoacid production compound; the quenching agent is an alkaline agent or an acid-induced alkali production agent; the auxiliary agent comprises a protective agent, and the protective agent is a group modified azole compound; the solvent is used for dissolving the substances to prepare the positive chemical amplification type photoresist, and by optimizing the composition and the process of the positive chemical amplification type photoresist, on the premise of ensuring the adaptability and the stability of the process, the problems of the side wall angle of a product after exposure and development and the residual of the photoresist on the bottom of a metal substrate after development are effectively improved.

The invention belongs to the technical field of vibration isolation, and particularly relates to a quasi-zero stiffness metamaterial sandwich structure, a vibration isolation device and a manufacturing method. The quasi-zero stiffness metamaterial sandwich structure is formed by periodically arranging unit cells in the horizontal direction, and each unit cell comprises an upper panel, a lower panel, a QZS resonator core body and a vertical supporting column; the QZS resonator core comprises a central mass block, QZS resonator units are arranged on the upper portion and the lower portion of the central mass block in a mirroring mode, each QZS resonator unit is composed of two quasi-zero-stiffness unit cells which are arranged in a crossed mode, and each quasi-zero-stiffness unit cell is composed of a negative-stiffness component comprising a horizontal curved beam and a positive-stiffness component comprising an oblique straight beam. According to the sandwich structure, the quasi-zero-stiffness resonator of a novel structure serves as a core body, wider application in the ultra-low frequency vibration reduction field can be achieved, the band gap is adjustable, and the problems that a traditional metal base material structure is high in band gap frequency and limited in application field can be solved.

The present invention relates to a precursor for the production of an alloy used as a catalyst. The precursor comprises a metallic substrate, a layered structure comprising binders, metallic particles, and at least one metal oxide, metal phosphide, and / or metal sulfide, wherein the layered structure is arranged on the metallic substrate.

The invention discloses an FMM preparation method and material processing equipment, and relates to the field of semiconductor processing, and the method comprises the steps: carrying out the pretreatment of a strip-shaped metal substrate, removing the surface impurities of the strip-shaped metal substrate, and improving the flatness of the strip-shaped metal substrate; the two sides of the metal base material are thinned, and the thinning amount of the first surface of the metal base material is smaller than that of the second surface of the metal base material; and forming a plurality of evaporation holes penetrating through the first surface and the second surface on the metal substrate, wherein the evaporation holes are gradually expanded from the first surface to the second surface. According to the preparation method of the FMM, the internal stress in the material can be balanced in the metal base material thinning process, and the FMM is not prone to deformation in the preparation process or the evaporation process.

A method for laser treating a substrate of a piston seal ring (PSR) (20) for a gas turbine engine includes: deforming the substrate to place a portion (310) of a first surface (30) of the substrate in tensile stress; and while holding the substrate deformed, laser treating the portion (310). After the laser treating but before release of the deformation, the first surface (30) may remain in tensile stress. Release of the deformation then at least partially cancels the tensile stress.

The invention provides a coating composition, a metal protective coating and a preparation method of the metal protective coating. The coating composition is prepared from the following components in percentage by weight: 15 to 50 weight percent of silica sol, 3 to 25 weight percent of glass powder, 10 to 25 weight percent of silane coupling agent, 0.5 to 2 weight percent of organic acid, 2.5 to 20 weight percent of filler and the balance of water, wherein the melting point of the glass powder is 400-600 DEG C. The glass powder has the specific melting point, can soften and flow in the coating curing process, is fused with the silica sol and fills coating gaps, a more compact network structure is formed, the sealing performance and permeation resistance of a coating are improved, and corrosion of a corrosive medium to metal is blocked. The silane coupling agent is introduced, so that the interface bonding force between the coating and the metal substrate can be enhanced, and the adhesive force of the coating to the metal substrate is improved. The coating composition takes water as a solvent, so that the emission of organic volatile matters and the harm to the health of operators are reduced.

Methods of using high-purity alkynes substantially free of residual alkyl halides, water and / or carboxylic acids and their use (e.g., in formulations) for enhanced passivation of metallic substrates.

The invention relates to an optical element (1) for reflecting radiation (2) in the VUV wavelength range, comprising: a surface (4a, 4a'), and a dielectric multilayer coating (5) applied to the surface (4a, 4a'). The dielectric multilayer coating (5) is designed for the particularly broadband reflection of radiation (2) in the VUV wavelength range. The surface (4a, 4a') is formed from a preferably metallic base material that has a reflectivity of 60% or less, particularly 50% or less, in the VUV wavelength range. Preferably, the base material for reflecting radiation (3) in the UV / VIS wavelength range has a reflectivity of at least one wavelength (λ). VIS) exhibits a reflectivity of more than 50%, preferably more than 70%, particularly preferably more than 80%, and especially more than 90% in the UV / VIS wavelength range. The invention also relates to an optical arrangement for the VUV wavelength range, which comprises at least one such optical element (1).

The invention belongs to the field of polymer coatings, and provides an aliphatic polyurethane finish paint with high adhesion resistance and a preparation method thereof. According to the invention, a polyurethane phase and a polyacrylate network are adopted to construct a semi-interpenetrating network structure, cyclic carbonate and hydrolyzable silane end groups are introduced into double-end functionalized polysiloxane, and a silicon-oxygen network surface layer is self-assembled after coating and curing; the high crosslinking density with the gel fraction being greater than or equal to 85%, the wear-resistant and anti-slip performance with the dry friction coefficient being greater than or equal to 0.50 and the abrasion mass loss being less than or equal to 0.030 g / 500 r, the ultra-low surface energy anti-dirt performance with the water contact angle being greater than or equal to 105 degrees and the surface free energy being less than or equal to 22 mN / m and the environment-friendly characteristic that the volatile organic compound content is less than or equal to 50 g / L are achieved; the three technical contradictions of high gel fraction and ultralow surface energy silica surface layer coupling, high hardness wear resistance and high friction coefficient maintenance, and high solid content and low volatility organic compound processing window and nano gradient silica surface layer construction are solved, and the nano gradient silica coating has wide application value in the field of industrial terraces and metal base material coatings.

The invention relates to the technical field of coatings, in particular to a high-gloss water-based two-component finish paint. The high-gloss water-based two-component finish paint comprises a component A and a component B, wherein the component A is prepared from the following raw materials in parts by weight: 70-90 parts of a polyurethane modified water-based acrylate dispersion, 5-10 parts of a water-based high-hydroxyl acrylic acid dispersion, 0.1-1 part of a flatting agent, 0.1-1 part of a wetting agent, 0.1-1 part of a defoaming agent, 1-10 parts of water-based color paste and 5-15 parts of water; and the component B is 5-15 parts by weight of a water-based isocyanate curing agent. The water-based two-component finishing paint provided by the invention can be used for thick coating, miliaria and dark bubbles are not easy to occur, a paint film is good in leveling property, good in fullness and high in glossiness, and the water-based two-component finishing paint is particularly suitable for coating of a metal substrate.

The invention discloses a preparation process of a high-temperature-resistant metal protective coating, and relates to the technical field of protective coatings. According to the coating, an inorganic material which is stable at high temperature is compounded with an organic polymer to form a matrix with excellent high-temperature resistance, and an anti-corrosion filler is added to improve the corrosion resistance and the wear resistance. Through a specific preparation process, the coating and the metal substrate are tightly combined to form a compact protective barrier. The coating provided by the invention has excellent high-temperature resistance, corrosion resistance and adhesive force, and is suitable for metal structure protection in a high-temperature environment.

The utility model discloses metal base material surface coating binding force detection equipment which comprises a detection table, a detection assembly and an auxiliary assembly are arranged at the upper end of the detection table, a controller is arranged on one side of the detection table, and through cooperation of the detection assembly and the auxiliary assembly, multi-angle and multi-mode detection of the metal base material surface coating binding force can be achieved. The defects that in the prior art, a detection method is single, and the binding force cannot be comprehensively and accurately evaluated are overcome, specifically, a first electric push rod, a first motor, an adjusting gear, an adjusting rack, a micro motor and other parts in the detection assembly can accurately adjust the detection force and the detection position, and the detection accuracy is improved. Therefore, the pressing detection block can detect the coating with proper force and angle, so that the bonding strength between the coating and the metal base material can be measured more accurately.

Provided is a precoated metal plate (1), in which a second exposed part (30B) is disposed directly behind a first exposed part (30A), and a first length (L1) of the first exposed part (30A) from an end surface (15) of a metal substrate (10) to an edge part (21A) of a first coating film part (20A) is equal to or greater than a second length (L2) of a second exposed part (30B) from the end surface (15) of the metal substrate (10) to an edge part (21B) of a second coating film part (20B) disposed directly behind the first exposed part (30A).

The invention relates to the technical field of coatings, and discloses an acid and alkali resistant UV curing coating and a preparation method thereof. The prepared UV curing coating is prepared from the following raw materials in parts by weight: 40 to 60 parts of acrylic resin, 3 to 8 parts of pentaerythritol tetraacrylate, 3 to 7 parts of silicon dioxide, 3 to 5 parts of a photoinitiator, 6 to 12 parts of a composite reinforcing agent, 0.2 to 0.6 part of a flatting agent, 1 to 2 parts of a dispersing agent, 0.5 to 1.5 parts of a de-foaming agent and 15 to 25 parts of water. A coating film obtained after the coating is subjected to ultraviolet curing has excellent acid and alkali resistance, salt spray resistance and adhesive force and can be widely applied to the surface of a metal base material, and the metal base material is protected against corrosion of corrosive media such as acid, alkali and salt.

The invention discloses an electroplating method of a low-porosity nanoscale bright tin layer, which comprises the following steps: placing a clean metal substrate in an activating solution containing a surface modifier, and applying high pulse current for short-time impact to form a transition layer to obtain a target substrate; a target base material is placed in the nano-composite tin plating solution, electroplating is carried out under the cooperation of a continuous ultrasonic field and target waveform pulse current, and a low-porosity nano-scale bright tin layer is formed; the nanometer composite tin plating solution comprises stannous methanesulfonate, methanesulfonic acid, nanometer silicon carbide, nanometer silicon dioxide, a grain refiner, a dispersing agent, cinnamyl aldehyde, a vinyl pyrrolidone copolymer, ascorbic acid, a wetting agent and the balance deionized water. The binding force of a plating layer without a base coat is improved, the plating layer is strengthened, compact and bright, and the process is environmentally friendly.

To provide improved surgical instruments. [Solution] Surface preparation of sliding surfaces can improve the wear performance of surgical instruments such as surgical staplers, which include a reusable mechanism that is used multiple times with a single-use reloadable cartridge. A combination of surface hardening, surface finishing, and surface coating can be applied to the metal components of surgical instruments to reduce the possibility of abrasive wear in metal-to-metal sliding engagements. Surface hardening technology can enable further manufacturing operations such as welding without compromising the strength of the underlying metal substrate. With stainless steel metal substrates, surface hardening or surface hardening technology may reduce corrosion resistance, so a surface coating can be added to suppress surface oxidation and to provide a barrier against metal-to-metal contact. Further lubricating coating layers, such as a brazing coating layer, can enhance abrasion resistance.

The invention belongs to the technical field of chemistry, chemical engineering, materials and the like, and particularly relates to a composite material and a preparation method and application thereof.The composite material comprises a metal base material, a bottom coating and a surface coating, the surface of the metal base material is coated with the bottom coating, and the bottom coating comprises nanoparticles and a resin material; the surface coating is located on the upper surface of the bottom coating, and the surface coating comprises a fluorine-containing silane solution; wherein the upper surface of the bottom coating is provided with a surface microstructure, and the surface microstructure is formed by the nanometer particles in a protruding mode based on plasma etching. Wherein the bottom coating can form a surface microstructure to ensure the hydrophobic property, and can fix nanoparticles, so that the frost prevention durability is ensured, and the powder falling of the composite material in the use process is also avoided; the surface coating can further improve the hydrophobicity of the bottom coating under the condition that the surface microstructure is not influenced.

Disclosed in the present invention is a ceramization composite process applied to a metal substrate, comprising the following steps: 1) performing micro-arc oxidation treatment on a metal substrate; and 2) performing post-treatment on the metal substrate obtained in step 1). In the present invention, micro-arc oxidation treatment is performed on the metal substrate, which may result in micro-arc oxidation ceramic films of different colors on the surface of the metal substrate, the colors are uniform, and the appearance is beautiful; and then post-treatment is performed on the metal substrate to form protection for the micro-arc oxidation ceramic films and fill micro-pores of the micro-arc oxidation ceramic films, such that micro-film pores on the surface of the metal substrate undergone the micro-arc oxidation treatment are sealed, thereby greatly improving the stain resistance, weatherability, and surface hardness of the metal substrate, preventing film layer pulverization or cracking after the metal substrate is impacted, and solving the problems of poor stain resistance caused by the presence of micro-pores on surfaces, poor weatherability and insufficient surface hardness caused by open and unsealed film pores, and high hardness and brittleness of micro-arc oxidation films of existing micro-arc oxidation processes.

The invention discloses an anti-scraping thin coating type powder coating plate and a preparation method thereof, and relates to the technical field of coating materials and metal surface treatment. According to the scheme, the method comprises the following steps: forming a film on the surface of a degreased, alkali-washed and passivated metal substrate by adopting an interface modification liquid containing a silane coupling agent KH-590; and performing melt extrusion on a powder coating prepared from a hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, a triglycidyl isocyanurate / caprolactam composite curing agent and a titanate modified nano composite filler, and then performing electrostatic spraying and curing to obtain a coated plate with a dry film thickness of 20-40 [mu] m, wherein the powder coating is prepared from the hydroxyl-terminated polyether-ether-ketone / bisphenol A type epoxy silane grafted composite resin matrix, the triglycidyl isocyanurate / caprolactam composite curing agent and the titanate modified nano composite filler. The invention has the following beneficial effects: the interface modification layer and the silicon-containing grafted resin cooperate to improve the interface bonding force, boiling resistance and salt spray resistance; the multi-scale hard filler constructs a reinforced skeleton in the film, so that the scratch resistance is improved while the mechanical property is maintained, and thin coating and powder saving are realized under the condition of ensuring the decoration and durability.

The object of the present invention is to provide an active energy ray curable coating composition for metal substrates that exhibits good hardness, processability, and weather resistance of the cured coating film, as well as laminates and molded processed members using the same. Another object of the present invention is to provide an active energy ray curable coating composition for metal substrates that exhibits good coating film properties even when an ultraviolet absorber is used, and that does not cause precipitation of the ultraviolet absorber during storage, thus exhibiting good storage stability. [Solution] An active energy ray curable coating composition for a metal substrate comprising a binder component (A) and an ultraviolet absorber (B), wherein the binder component (A) comprises a urethane (meth)acrylate (A-1), a radical polymerizable monofunctional monomer (A-2) having an alicyclic structure, and a radical polymerizable monofunctional monomer (A-3) having a heterocyclic structure and a homopolymer glass transition temperature (Tg) of 20°C or higher, and a coated laminate using the same.

Exemplary methods and techniques anodize a metallic substrate. Exemplary metallic substrates may include aluminum or aluminum alloys. The formation of a metal oxide layer on the metallic substrate may occur in an electrolytic system. Exemplary electrolytic systems may comprise at least one electrode connected to a voltage-generating device and an aqueous acid solution. Exemplary aqueous acid solutions may comprise phosphoric acid, boric acid, and water.

The invention belongs to the technical field of functional coatings, and particularly relates to a static conductive coating for nonmetal and a preparation method of the static conductive coating. The coating is composed of modified Si-C fluorosilicone resin, conductive nickel powder, ethandiamide and multiple auxiliaries, the modified Si-C fluorosilicone resin is prepared through a double-grafting reaction of mercaptoethanol and vinyl trifluoroacrylate,-S-and-CF groups are introduced into molecules at the same time, and the polarity of the resin and the dispersity of the conductive nickel powder are remarkably improved. The oxadiamide as a polar small molecule synergist can promote the formation of a conductive network and enhance the interface bonding force. The surface resistivity of the obtained coating is about 2.8 * 10 omega / square, the static decay time is 0.38 s, the adhesive force reaches 5B, and the conductivity retention rate after wear resistance exceeds 97%. The coating has excellent static conductivity, adhesive force and environmental stability, is suitable for the surfaces of non-metal base materials such as ABS, PVC and polycarbonate, and can be widely applied to the fields of electronic equipment shells, rail transit interior trim parts, anti-explosion and anti-static terraces and the like.

Disclosed herein are systems for treating a substrate. The system may include a cleaner composition, a deoxidizing composition comprising a Group IVA metal and / or a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0, and / or a seal composition. The system may also include a coating composition. The cleaner composition, deoxidizing composition, and / or seal composition may comprise a homopolymer or a copolymer comprising a phosphorous-containing monomeric subunit m1. Also disclosed is a deoxidizing composition comprising a Group IVA metal and a Group IVB metal and free fluoride and having a pH of 1.0 to 3.0. Also disclosed are methods of treating a substrate. Also disclosed are treated substrates.

The application discloses a graphene super-hydrophobic corrosion-resistant composite coating and a preparation method and application thereof, and comprises the following steps: S1, graphene material and hydrochloric acid dopamine are dissolved in water, and ultrasonic treatment is carried out in a weak alkali environment; S2, fluorosilane is dissolved in ethanol and then added to the solution after ultrasonic treatment in S1, continuous stirring is carried out at a first temperature, then the temperature is increased to a second temperature, continuous stirring is carried out, then cooling, filtering and drying are carried out to obtain a composite filler; S3, the composite filler obtained in S2 is ultrasonically dispersed in a solvent, PDMS and a curing agent are added and stirred, and a coating is obtained after ultrasonic treatment; and S4, the coating prepared in S3 is coated on the surface of a metal substrate, curing is carried out, and a graphene super-hydrophobic corrosion-resistant composite coating is obtained. The composite coating prepared by the application can inhibit the "corrosion promotion activity" of graphene, has excellent corrosion inhibition performance, and can achieve super-hydrophobicity by cross-linking with PDMS having low surface energy, and simultaneously has excellent self-cleaning performance.

A corrosion-resistance testing method for a coated metal member formed of a metallic substrate provided with a surface treatment coating includes an electrification step for applying a voltage and / or a current between a surface of the surface treatment coating and the metallic substrate while a corrosion factor is in contact with the surface of the surface treatment coating so as to measure a temporal change in a current and / or a voltage occurring between the surface of the surface treatment coating and the metallic substrate, and an evaluation step for evaluating a coating quality of the surface treatment coating based on at least one of a gradient of the temporal change when a value of the current and / or the voltage exceeds a predetermined value, an integrated value of the value of the current and / or the voltage within a predetermined time range, and a time average value of the integrated value.

An edge-lit waveguide illumination system with a thin, flexible layer of optically transmissive material designed for guiding light through optical transmission and total internal reflection. The system features a randomized two-dimensional pattern of discrete cavities formed on its back surface, and an array of linear cylindrical lenses on its front surface. Light is emitted by a plurality of LEDs positioned along a light input edge. A sheet of reflective material is positioned coextensively on the back surface. At least one cavity features a curved wall with a specific angle. Additional components may include a photoresponsive layer, a heat-dissipating metallic substrate with side-emitting LEDs, and optical adhesives or encapsulants. The system may also incorporate luminescent centers and / or a light-diffusing layer for altering light characteristics.

A method for coating a metallic substrate includes applying an MCrAlY coating. Machining removes the MCrAlY coating from one or more regions of the substrate. A simultaneous aluminizing and chromizing: aluminizes an interior surface region of the substrate lacking the MCrAlY and at least a portion of a region where the MCrAlY remains; and chromizes an exterior surface region of the substrate lacking the MCrAlY and at least a different portion of the region where the first MCrAlY remains.

The present application relates to the technical field of coating compositions, and discloses a Janus structure marine antifouling and anticorrosion polyurethane coating and a preparation method thereof, the preparation method of the Janus structure marine antifouling and anticorrosion polyurethane coating comprises the following steps: preparing an amphoteric ionic functional monomer; taking a functional glycol, a diisocyanate, an organic bismuth catalyst, the amphoteric ionic functional monomer and a pyridine functional monomer as raw materials, reacting to obtain a functional polyurethane slurry; coating the functional polyurethane slurry on the surface of a metal substrate, curing, and immersing in artificial simulated seawater to obtain the Janus structure marine antifouling and anticorrosion polyurethane coating; the coating has the characteristics of simple preparation, stable properties and multifunctional integration, and can be adapted to various metal substrates.

The invention relates to the technical field of coating material preparation, in particular to a microbead modified corrosion-resistant dry plating metal powder coating material and a preparation method thereof, and the material comprises carboxyl polyester resin, epoxy resin, a curing accelerator, a flatting agent, a degassing agent, a pigment filler, brush polymer modified microbeads, a metal pigment, a dry plating binder and a charge adjusting aid. According to the powder coating material, the corrosion resistance and durability are remarkably improved while the metal appearance and the construction stability are maintained, the coating film interface bonding is high, pore channels are few, and foaming, pitting corrosion and corrosion medium permeation along the interface in the salt mist environment can be effectively inhibited; after scratches or micro-cracks are formed, the coating film has micro-crack sealing / self-passivation capability, the corrosion rate extending along the scratches can be reduced, and the service life can be prolonged; and meanwhile, the powder is electrified uniformly, the powdering rate is high, the film thickness distribution is more uniform, the metal dry plating effect is stable, the color difference fluctuation in recycling is small, and the powder coating is suitable for metal base material protective coating with the requirements for appearance and corrosion resistance at the same time.