32 results about "Double coating" patented technology

The invention belongs to the technical field of conductive material preparation, and relates to a refined asphalt-based porous carbon double-layer orderly coated conductive material and a preparation method and application thereof, and the preparation method comprises the following steps: S1, cutting medium and low temperature coal tar to obtain fraction section asphalt of 350-550 DEG C; s2, refining the fraction section asphalt, and blending with polyacrylonitrile fibers (PAN) to obtain a compound material; pre-oxidizing the compound material at low temperature, mixing with an activating agent, grinding, drying, activating at high temperature, cooling and washing to obtain refined asphalt porous carbon; s3, coating the refined asphalt porous carbon with silicone oil through an impregnation method, and curing to obtain a single-coating coating material; and S4, dissolving the single-coating coating material in tetrahydrofuran, then adding carbolic oil-gel to perform double-layer coating, and performing secondary curing treatment to obtain the conductive material. According to the invention, medium and low temperature coal tar is used as a raw material, and the cycle stability and electrochemical performance of the conductive material are improved and the processing cost is reduced through methods of fraction cutting, mixed carbonization and double-layer coating.

A dosage form has a core with at least one biologically active ingredient, an intermediate coating layer (ICL), and an enteric coating layer (ECL). The ICL has at least one polymer, at least one alkaline agent, and at least one release acceleration agent. The ECL has at least one polymer. A method for obtaining the dosage form coats the ICL on the core via spray coating, followed by the coating of the ECL on the ICL via spray coating. The dosage form provides accelerated drug release at values of pH 3 to pH 6, with at least 80% drug release within 60 min at pH values 3 and 5.

A double coating structure based on a multifunctional water-based low-temperature paint, and a coating system and the use thereof. The double coating structure comprises a first coating and a second coating, wherein the first coating comprises a mixture of a flaky metallic pigment and an inorganic oxide pigment; the second coating comprises a transparent organic color paste; and a first-coating paint composition used for the first coating and a second-coating paint composition used for the second coating are both mixtures containing an acrylic resin emulsion and a polyurethane dispersion. The double coating structure uses the technical solution of a pigment mixture and does not contain any curing agent such as an isocyanate; the obtained double coating structure has high radar wave transmission performance, high infrared reflection performance and high reflective insulation capacity, and is particularly suitable for black or silver paint systems; and since a water-based low-temperature paint is used, the double coating structure has the characteristics of significant low-temperature quick-drying film formation, a thin coating and a low VOC content, and can realize a coating process that has low energy consumption and is healthy and environmentally friendly.

A wheel includes a hub portion configured to rotate about a rotational axis. A plurality of blades extends radially outward from the hub portion. Each blade of the plurality of blades includes a leading edge and a trailing edge. The hub portion and the plurality of blades include a substrate metal that includes aluminum or an alloy thereof. The substrate metal of the plurality of blades has coated directly thereon a first coating layer including electroless nickel-phosphorous. The first coating layer has coated directly thereon a second hard coating layer that overlies the leading edges of the plurality of blades and that is formed of a physical vapor deposition-compatible material.

The application belongs to the technical field of surface protection, and discloses a double-layer coating for a boiler heating surface and a preparation method thereof; wherein the double-layer coating comprises an inner layer coating and an outer layer coating; in the inner layer coating, the mass percentage of rare earth oxide is 0.1% to 0.3%, and the mass percentage of Inconel 625 is 99.7% to 99.9%; the outer layer coating is used for spraying on the surface of the inner layer coating, and in the outer layer coating, the mass percentage of Cr3C2 is 30% to 50%, and the mass percentage of Inconel 625 is 50% to 70%. The double-layer coating provided by the application has extremely excellent high-temperature chlorine corrosion resistance of the inner layer coating, and on the basis of the high-temperature corrosion resistance of the outer layer coating, the outer layer coating has extremely excellent erosion resistance, and can effectively prolong the service life of the boiler heating surface tube bundle steel.

The utility model discloses a milling cutter for a nano-diamond coating surface. The cutter comprises a first cutter body, a cutter body coating assembly arranged at one end of the first cutter body and an installation fixing assembly arranged at the other end of the first cutter body, the cutter body coating assembly comprises a second cutter body connected to one side of the surface of the first cutter body in a matched mode, one end of the surface of the second cutter body is connected with a cutter head in a matched mode, and the surface of the cutter head is coated with a first coating. The surface of the tool bit is coated with a second coating, one end of the second tool body is connected with the tool bit, the tool bit is coated with the first coating and the second coating which are made of nano-diamond, the overall service time is prolonged through the use of the double coatings, and the falling-off condition is reduced; and the multiple cutting edges connected to the surface of the second cutter body in a matched mode are also coated with the double coatings, the overall practicability is improved, then when the nano-diamond coating face milling cutter is used, the thickness of the coatings of the overall milling cutter is large, and therefore the situation that the coatings fall off is not likely to happen.

The application discloses a kind of anticorrosion weather-resistant double-coat powder coating for new energy storage cabinet and preparation method thereof, belong to powder coating processing technical field, for solving the technical problem that powder coating for new energy storage cabinet corrosion resistance in prior art is further improved in outdoor weather resistance and strong medium corrosion resistance.A kind of anticorrosion weather-resistant double-coat powder coating for new energy storage cabinet, including primer and surface coating, the primer includes the following composition by weight parts: epoxy polyester 70-80 parts, anticorrosive filler 28-32 parts, curing agent 3-5 parts and auxiliary additive 2-3 parts.The application is designed by resin molecular structure and inorganic filler surface chemical modification synergistic construction high density, high weather-resistant double-coat system, so that coating still maintains excellent adhesion, impact resistance and long-term corrosion resistance under ultraviolet, impact and strong acid and alkali environment.

The invention discloses a false eyelash hidden type line stem preparation method, and relates to the technical field of false eyelashes, and the false eyelash hidden type line stem preparation method comprises the steps of base material selection, laser cutting, hair combination, line stem coating, double gluing, glue layer detection, folding and pressing, eyelash detection, reel pipe shaping, pulling and clamping, stem cleaning, packaging and the like. And after the false eyelash is folded and pressed, the thread stem is wrapped in the false eyelash, so that the problem that the thread stem of the traditional false eyelash is exposed to cause stiffness and falseness is solved. The stitches do not directly contact with eyelids, the prying feeling during blinking is reduced, even if a sensitive skin user wears the false eyelashes for a long time, redness, swelling and foreign body feeling do not exist, the wearing comfort degree is greatly improved, meanwhile, due to hiding of the stitches, air and sweat can be isolated, the glue aging speed is slowed down, and the service life of the false eyelashes is remarkably prolonged.

The title of the application is a two-layer coating system for composite protection. The present application shows a two-layer coating system for an epoxy composite component. The two-layer coating system includes a first layer configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength and a second layer in contact with the first layer and configured to reflect an infrared component of sunlight. The first layer comprises polyurethane and carbon black. And the second layer comprises polyurethane and titanium dioxide. The first layer is between the second layer and the epoxy composite component.

The application provides an edible active coating for preventing dry consumption under an ultralow temperature condition and a preparation method, and belongs to the technical field of active packaging. The application combines double-layer coatings, inhibits free radical oxidation generated by freezing through an inner antioxidant, and effectively locks water and blocks external oxygen permeation through the synergistic effect of an outer high-barrier structure, thereby significantly improving the freezing preservation effect of food, and the raw materials are natural and safe, the preparation method is reasonable, and the application has good practical application value. The application solves the problems of poor effects of edible freezing protection coatings suitable for extremely cold environments in the prior art.

The present invention relates to the field of bolt technology, specifically a corrosion-resistant bolt and a method for preparing the same. The corrosion-resistant bolt comprises the following elements in weight percentage: C: 0.25-0.35%, Si: 0.16-0.38%, Mn: 0.4-0.7%, Cr: 0.1-0.2%, Ni: 0.2-0.4%, Mo: 0.15-0.30%, Ti: 0.12-0.16%, Ru: 0.05-0.15%, Rh: 0.16-0.32%, Ir: 0.10-0.15%, with the remainder being iron and unavoidable impurities. The present invention manufactures the bolt through processes such as converter smelting, continuous rolling, and cold heading, and, combined with a double coating design, can provide excellent corrosion resistance and extend the service life of the bolt.

The invention provides a food source-based active coating for preventing dry consumption under an ultralow temperature condition and a preparation method thereof, and belongs to the technical field of food active packaging. According to the invention, through the combination of the two coatings, the inner antioxidant inhibits free radical oxidation generated by freezing, and the outer high-barrier structure effectively locks water and blocks the synergistic effect of external oxygen permeation, the freezing and fresh-keeping effect of food is significantly improved, the used raw materials are natural and safe, the preparation method is reasonable, and good practical application value is achieved. The problem that in the prior art, an edible freezing protection coating suitable for an extremely cold environment is poor in effect is solved.

Exemplary coating methods may include providing one or more coating precursors to a processing region of a semiconductor processing chamber. The processing region may be at least partially defined by a lid and one or more walls. The coating methods may include forming plasma effluents of the one or more coating precursors. The coating methods may include depositing a first portion of a coating on the lid and one or more walls at a first pressure. The coating methods may include, subsequent to a first period of time, increasing a pressure within the processing region to a second pressure over a second period of time while depositing a second portion of the coating on the first portion of the coating. The coating methods may include depositing a third portion of the coating on the second portion of the coating over a third period of time at the second pressure.

This invention discloses an integrated fluidized bed drying and sieving device for powder coatings using a dual-coating process. It includes a vibrating chamber and an upper chamber. The vibrating chamber houses an inclined conveyor frame, which contains a conveying and sieving mechanism composed of a sieve plate and a guide plate. A gap exists between the conveyor frame and the conveying and sieving mechanism, and a circulating dispersion frame is located within this gap. A discrete frame is movably mounted on top of the conveyor frame. The circulating dispersion frame includes a set of fixed shafts, with several transmission levers movably mounted between these fixed shafts. Compared to existing technologies, this invention has the advantage of pre-dispersing the material using the discrete frame and separating rollers, combined with the continuous agitation of the bottom powder by the circulating dispersion frame, significantly improving drying uniformity and sieving efficiency. Furthermore, by setting up a monitoring module to dynamically adjust process parameters, it ensures the stability of equipment operation and high efficiency of maintenance, effectively improving the overall quality and automation level of powder coating production.

The utility model relates to the technical field of coating equipment, and discloses an adhesive coating device which comprises a conveying line, and a double coating mechanism is arranged at the top of the conveying line; and the double-coating mechanism comprises a mounting frame, a first liquid storage tank, a spray head, a fixed frame, a second liquid storage tank, a movable part and a brush head. According to the coating device, the double coating mechanisms are arranged, when a conveying line conveys a plate body needing to be subjected to coating processing, the plate body can pass through the double coating mechanisms, when the processed plate body passes through the mounting frame, the spray head can coat a first coating on the surface of the processed plate body, and then when the processed plate body passes through the fixing frame, the spray head can spray a second coating on the surface of the processed plate body. The movable part is in contact with the surface of the processing plate body and is jacked up, so that a solution in the circulating groove can flow to the surface of the processing plate body through the groove, the surface of the processing plate body is coated with a second coating, the surface of the first coating can be coated with a second coating, a double coating effect is formed, and the comprehensive performance of the coated coating after curing is better.

The application discloses a light coating heat-shielding umbrella cloth and a preparation method thereof, and belongs to the technical field of sunshade fabrics. The umbrella cloth comprises a reinforced base cloth with a surface density less than 35 g / m2 and a breaking strength greater than or equal to 200 N, a color-keeping reflective bottom layer and a modified aluminum silver paste reflective surface layer are sequentially coated on the base cloth, the overall surface density of the umbrella cloth is less than 65 g / m2, the heat-shielding rate is greater than 65%, and the light color fastness is greater than or equal to grade 4. The application reflects heat through the cooperation of the double-layer coating, realizes light weight while ensuring high heat-shielding rate, has good color-keeping property of the coating, has no light glare phenomenon, and simultaneously has excellent ultraviolet-proof and waterproof performances. The application further provides a preparation method of the umbrella cloth and a preparation method of the modified aluminum paste. The application overcomes the technical problem that light weight and high heat-shielding performance are difficult to be simultaneously achieved in the prior art, and is suitable for a light sunshade umbrella.

The title of the application is a two-layer coating system for composite protection. The invention discloses a double-layer coating system for a composite part. The two-layer coating system includes a first layer configured to prevent transmission of at least one of ultraviolet light or visible light within a desired wavelength and a second layer in contact with the first layer and configured to reflect an infrared component of sunlight. And the second layer comprises polyurethane and titanium dioxide. The first layer is between the second layer and the composite component.

The application discloses an online secondary coating machine for roller printing products, which comprises a rack, two coating pad rollers positioned and installed on the rack, a coating plate roller positioned and installed on the rack and adjacent to the coating pad rollers in one-to-one mode, a transition roller and a paper conveying roller positioned and installed on the rack and sequentially transmissionally connected between the two coating pad rollers, the front and back sides of the transition roller being the coating pad rollers or the paper conveying roller, the transition roller and the coating pad rollers or the paper conveying roller being transmissionally connected through bevel gears, the transition roller being internally provided with a blowing device so that the coating surface of the coated material is inward and the coating content is not in contact with the transition roller when the coated material is pulled forward, and the upper side of the paper conveying roller being provided with a hot air device for blowing hot air to the coating surface of the coated material to heat and dry the coated material. The transition roller does not contact and transfer the coated material, the online double coating is completed without leaving the machine table, the accurate gear transmission between the rollers can guarantee that the overprint position of the double coating is more accurate, the overprint position deviation caused by repeated feeding is avoided, and the efficiency is improved.

The utility model discloses a liquid crystal polymer reflecting film double-layer coating device, which relates to the technical field of liquid crystal polymer reflecting film processing and comprises a coating unit and device frames, the device frames are symmetrically arranged on two sides of the coating unit, and a first conveying mechanism is erected on the top of one end, close to the device frames, of an auxiliary frame. A second conveying mechanism is erected at the bottom of the section, away from the device frame, of the auxiliary frame. According to the double-layer coating device for the liquid crystal polymer reflecting film, through combined use of the coating units and the device frame, on one hand, the distance between the coating units which are symmetrically erected up and down can be adjusted so as to guarantee normal operation of the structure, and on the other hand, the auxiliary frames which are in butt joint up and down are utilized; according to the reflective film material conveying device, coating processing is not affected, meanwhile, scattering of coating can be avoided, through combined use of the first conveying mechanism and the second conveying mechanism, the reflective film material can be effectively conveyed, and meanwhile tensioning adjustment can be provided through the structure of the reflective film material conveying device.

This application discloses a method, apparatus, system, and storage medium for determining the formulation of a double-layer coating. The method includes: obtaining the target tortuosity and performance constraints of each individual layer in the double-layer coating; determining target formulation parameters for each individual layer in one or more execution rounds; one execution round includes: determining the current tortuosity and current performance parameters of the individual layer based on its current formulation parameters and under the constraints of the target performance parameters; determining whether the current tortuosity is within the target range defined by the target tortuosity, and whether the current performance parameters satisfy the performance constraints; if not, updating the current formulation parameters using at least a quantitative relationship model indicating the correspondence between tortuosity and formulation parameters, and executing the next round; if yes, determining the current formulation parameters as the target formulation parameters for the individual layer. This application achieves rapid formulation determination through a quantitative relationship model.

The utility model discloses a non-woven fabric filter material with formaldehyde adsorption and cleaning functions, which relates to the technical field of formaldehyde purification and comprises an upper coating layer and a lower coating layer, an inner coating layer and an activated carbon layer are arranged inside the upper coating layer and the lower coating layer, and air holes are arranged on the upper coating layer, the lower coating layer and the inner coating layer. Positioning protruding points are formed on the inner walls of the upper wrapping layer and the lower wrapping layer, and positioning grooves are formed in the outer wall of the inner wrapping layer. According to the non-woven fabric filter material with the formaldehyde adsorption and cleaning functions, through double coating of the upper coating layer, the lower coating layer and the inner coating layer, the activated carbon layer can be sealed and stored properly; the air permeability of the whole filter material is ensured through the arrangement of the air holes in the upper coating layer, the lower coating layer and the inner coating layer and the corresponding positioning clamping connection of the positioning convex points and the positioning grooves, so that the internal activated carbon layer can be in full contact with formaldehyde in air and is used for adsorbing and cleaning, the adsorption and purification efficiency of the formaldehyde is improved, and the service life of the filter material is prolonged. The utilization rate of the activated carbon particles is also improved.

The invention discloses a double-layer anti-oxidation coating for a thin-wall C / C composite material and a preparation method of the double-layer anti-oxidation coating. The coating comprises a SiC coating and an ultrahigh-temperature ceramic boride (HfB2, ZrB2, TaB2, TiB2 and the like) modified SiC coating from inside to outside. The preparation method of the coating comprises the steps that slurry brushing is combined with densification siliconizing, the thickness of the coating is reasonably controlled through the slurry brushing technology, coating holes formed after slurry brushing are filled in the densification siliconizing process, the densification siliconizing process, the coating and a surface layer base body C are subjected to an in-situ reaction to generate an anti-oxidation SiC phase, and the bonding strength between the base body and the coating and the bonding strength between the two layers of coatings are improved; compared with a conventional preparation process, the interface bonding strength is remarkably improved, the surface quality of the coating is comprehensively improved, the porosity is remarkably reduced, the surface densification uniformity is excellent, and no local loosening defect exists.

The invention discloses an Al2O3-NiAl double-layer coating and a preparation method thereof, and belongs to the technical field of metal material plating. In order to solve the problem that in the prior art, the service performance of the aluminum alloy surface is limited, the Al2O3-NiAl double-layer coating on the aluminum alloy surface and the preparation method are provided, the Al2O3-NiAl double-layer coating is formed by spraying a NiAl coating on an aluminum alloy matrix, the NiAl coating is obtained by mixing nickel powder and aluminum powder and then conducting spraying reaction, and the coating containing NiAl and Ni3Al compounds is obtained. And then the NiAl coating is subjected to oxidation treatment, so that a compact Al2O3 ceramic layer is formed on the surface. The Al2O3-NiAl double-layer coating is of a compact structure, corrosion medium permeation and crack propagation can be effectively hindered, and good corrosion resistance and wear resistance are shown.

The present application relates to the technical field of coatings and provides a double-layer coating and preparation method therefor, and application thereof. The double-layer coating comprises a priming coating and a top coating, the priming coating comprises a ceramic precursor and a resin, the ceramic precursor is composed of a polysilane-like compound and a metal precursor, the polysilane-like compound is selected from one or more of polycarbosilane, polyborosilazane, and polysilicon-boron-carbon-nitrogen, and the metal precursor is selected from one or more of a zirconium precursor, an aluminum precursor, and a titanium precursor. The priming coating of the present application uses a copolymerization product obtained by reacting the ceramic precursor with the resin as the main resin, and the ceramic precursor is composed of the specific polysilane-like compound and the metal precursor, achieving low adhesion performance on the material surface, thereby effectively preventing the formation of limescale, while also improving anti-corrosion performance and reducing energy consumption.

The invention relates to an anti-scraping glass cover plate double-coating film plating device, and belongs to the technical field of glass film plating, and the anti-scraping glass cover plate double-coating film plating device comprises a conveying belt, two portal frames are fixedly arranged on the outer side of the conveying belt, first motors are fixedly arranged on the outer sides of the two portal frames, and second motors are fixedly arranged on the outer sides of the two portal frames; a first lead screw rotationally connected to the inner side of the portal frame is fixedly connected to the output end of the first motor, a first guide rod is fixedly connected to the inner side of the portal frame, a feeding assembly is arranged on the portion, located on one side of the input end of the conveying belt, of the portal frame, and a lifting assembly is arranged on the portion, located in the middle of the conveying belt, of the portal frame. According to the double-coating spraying device, the sliding mounting block is driven by the motor V to move along the mounting shaft, double-coating uniform spraying of glass cover plates of different specifications by the spraying head is achieved, the height and the distance of the spraying head can be flexibly adjusted, the double-coating spraying device is suitable for workpieces of various specifications, the spraying range is wide, the uniformity is high, and the machining quality and efficiency are improved.

The invention discloses a matt black shading film and a preparation method thereof, and relates to the technical field of shading parts, and the matt black shading film is prepared by matching a double-layer coating structure with a surface modification carbon black technology. The shading film comprises a base material layer, a bottom coating and a matte black coating, and modified carbon black is prepared from an epoxy-containing monomer, a sulfydryl-containing monomer, carbon black and an anhydride-containing monomer according to a mass ratio through two-step reaction: firstly, an epoxy compound and a sulfydryl compound are subjected to addition grafting on the surface of the carbon black and then are subjected to esterification crosslinking with an anhydride compound, so that the surface energy of the carbon black is remarkably reduced, and the matte black coating is obtained. The dispersity and the binding force with a resin matrix are improved. The shading film has the advantages of good shading performance and good thermal deformation capability.

The invention discloses a high-strength wear-resistant straightening roll and a production and manufacturing process, and relates to the technical field of straightening roll manufacturing. Comprising a roller sleeve and a roller shaft, the roller sleeve is provided with rhombus-shaped lines and covered with double coatings, and the roller sleeve comprises a lower coating and an upper coating; the lower-layer coating is prepared from the following components in parts by weight: 45 to 55 parts of Co, 25 to 30 parts of Cr, 8 to 12 parts of W, 3 to 5 parts of Mo, 0.8 to 1.2 parts of C, 1.0 to 2.0 parts of Si, 0.5 to 1.0 part of B, 0.5 to 1.5 parts of Y2O3, not more than 3.0 parts of Fe, not more than 2.0 parts of Ni and the balance of impurities; wherein (Cr + W + Mo) / Co is greater than or equal to 0.70 and less than or equal to 0.85; 0.025 < = (C + B) / (Co + Cr) < = 0.035; the upper coating is prepared from the following components in parts by weight: 5.5 to 8.5 parts of Al, 24.0 to 28.0 parts of Co, 21.0 to 25.0 parts of Cr, 17.0 to 21.0 parts of Fe, 18.0 to 22.0 parts of Ni, 3.0 to 6.0 parts of Ti, 0.1 to 0.3 part of C, 0.05 to 0.15 part of B and the balance of impurities; 1.0 < = (Co + Ni) / (Cr + Fe) < = 1.3; and Al / (Co + Cr + Fe + Ni) is greater than or equal to 0.15 and less than or equal to 0.20, so that the technical problems that a laser cladding alloy structure layer is easy to fall off and the curved surface is not changed during processing are solved.

The utility model relates to steel pipe manufacturing technical field discloses a kind of double-layer coating steel pipe synchronous curing heating device, including shell, the inner wall of shell is fixedly connected with connecting mechanism, the top of shell is fixedly connected with fixed mechanism, the bottom of shell is fixedly connected with support, the inner wall rotationally connected with conveyor belt in the top of support, the outside fixed connection of fixed mechanism has pipeline;The connecting mechanism includes two chutes, the far side of two the chute is fixedly connected in the front and rear inner wall of shell, the inner wall of two the chute is slidably connected with multiple moving plate.In the utility model, effectively handle the double-layer coating steel pipe synchronous curing heating device in use exists the problem that heating plate is inconvenient to replace, reduce equipment downtime maintenance time, guarantee the continuity of production, improve the use reliability and practicality of device.

The invention provides a production process of a self-tapping screw, relates to the technical field of production of self-tapping screws, and aims to solve the problems that a traditional self-tapping screw is easy to slip in assembly, insufficient in corrosion resistance, low in tapping precision and the like, an SWRCH22A cold heading steel wire is adopted, a hexagonal head, a washer surface and a screw rod are formed through a five-station cold header, a cross square groove is pressed, and an ST3.9 self-tapping thread is formed through thread rolling. The head is not damaged when a machine tooth section is rolled to the top, the pitch error of a self-tapping section is smaller than or equal to + / -0.03 mm, carburizing and quenching at 880 + / -10 DEG C and tempering at 180 + / -10 DEG C are conducted, the surface hardness is made to be 460-550 HV, the core hardness is made to be 290-370 HV, a Dacromet coating and flange face paint scratching technology is adopted for surface treatment, finally, a 2.5-tooth tail cutting structure is machined through a high-speed tail cutting machine, and the assembling compatibility is improved through the composite design of a cross square groove and a hexagon head. Gradient heat treatment realizes balance of surface wear resistance and core toughness, double coatings give consideration to corrosion prevention and conductive connection, and accurate tail cutting reduces the tapping resistance and improves the guide precision.