758 results about "Resin coating" patented technology

The invention discloses a multi-layer protection cable resistant to an extreme environment, and belongs to the technical field of cables. The cable is of a seven-layer composite structure design and sequentially comprises a conductor, an insulating layer, a shielding layer, a buffer layer, a waterproof layer, a heat insulation layer and a protective outer layer from inside to outside, and the conductor is made of high-purity oxygen-free copper; the insulating layer is made of a polyimide material and has high temperature resistance, low temperature resistance and excellent insulating property; the shielding layer is composed of a tinned copper wire woven mesh and a high-permeability permalloy foil, and electromagnetic interference is effectively shielded; the buffer layer is made of an elastic rubber material to relieve mechanical stress; the waterproof layer adopts a nanoscale fluorosilicone resin coating and has excellent waterproof performance; the heat insulation layer is made of ceramic fibers and aerogel, and efficient heat insulation is provided; and the protective outer layer is made of a high-strength and corrosion-resistant polyether-ether-ketone (PEEK) material. The cable has excellent high temperature resistance, low temperature resistance, corrosion resistance and electromagnetic interference resistance, is suitable for extreme environments, and ensures stable transmission of electric power and signals under extreme conditions.

The invention discloses a shielding protection adhesive tape for semiconductor integrated circuit packaging and a preparation method thereof, and relates to the technical field of semiconductor integrated circuit packaging. The shielding protective adhesive tape for packaging the semiconductor integrated circuit is prepared by taking polyimide as a base material and coating a coating, and the coating comprises the following raw materials in parts by weight: 3-5 parts of modified nano silicon dioxide, 30-40 parts of N, N-dimethylformamide, 1-3 parts of a curing agent and 1-3 parts of a curing agent. The invention discloses a high-temperature-resistant epoxy resin coating which is prepared from the following components in parts by weight: 25-30 parts of N, N-dimethylformamide, 25-30 parts of a modified acrylate copolymer, 17-26 parts of ethyl acetate, 12-15 parts of epoxy resin, 1-2 parts of a silane coupling agent KH-550, 0.5-1 part of an antioxidant 1010, 0.3-0.8 part of an ultraviolet absorbent UV-327, 1-2 parts of carboxyl-terminated nitrile rubber, 2-4 parts of decabromodiphenyl ether, 0.1-0.3 part of an organic siloxane defoaming agent, 0.2-0.5 part of an acrylate flatting agent and 10-11 parts of diaminodiphenyl sulfone. The adhesive tape contains the modified nano silicon dioxide, the modified acrylate copolymer and other components, so that the performance of the adhesive tape is guaranteed; pretreatment is meticulous, preparation steps are standard, and mass production is easy; a finished product can be effectively shielded, and the packaging yield and the product stability can be improved.

The invention relates to the technical field of biomass fibers, in particular to a modified biomass fiber for a resin anticorrosive coating as well as a preparation method and application of the modified biomass fiber, and the modified biomass fiber is a biomass fiber with a rare earth complex anchored on the surface; the rare earth complex is formed by combining rare earth metal ions serving as central ions with organic ligands through coordinate bonds; rare earth ions and organic ligands are grafted to the surfaces of the pretreated biomass fibers through chemical reaction, so that the binding capacity of the biomass fibers in resin can be improved, and the biomass fibers are endowed with fluorescence characteristics; and moreover, the biomass fibers subjected to fluorescence modification are doped into the resin coating, so that the integrity of the coating can be self-detected under ultraviolet light, and the effect of monitoring the resin coating in real time can be achieved.

The invention relates to the field of preparation of lubricating materials, in particular to a preparation method of composite phase change lubricating gel based on temperature-friction force synergistic response. The lubricating gel adopts a sandwich layered structure; the bottom layer is a porous ceramic layer formed by micro-arc oxidation, is filled with a disulfide bond dynamic network polymer and is anchored on a metal substrate; the middle layer comprises a microencapsulated phase change material which is dispersed in a polyurethane network containing dynamic disulfide bonds and is wetted with ionic liquid; the surface layer is an epoxy resin coating rich in boron nitride nanosheets, and a rapid heat conduction channel is constructed. Compared with the prior art, the lubricating state can be automatically adjusted in the friction process without external energy input, and the method has the advantages of being sensitive in multi-field coupling response, capable of achieving automatic antifriction protection, high in extreme working condition adaptability and the like.

The invention belongs to the technical field of flame retardance, and particularly discloses a production process of a polyester efficient flame retardant and application of the polyester efficient flame retardant to a thermal insulation material. Comprising the following steps: (1) dispersing montmorillonite in deionized water, adding PEG-400, octadecyl trimethyl ammonium chloride and aluminum metaphosphate, stirring at the temperature of 50-60 DEG C, and drying to obtain pretreated montmorillonite; (2) uniformly mixing composite glass fibers, magnesium hydroxide and silicon dioxide, dispersing the mixture into an ethanol solution, adding the pretreated montmorillonite in the step (1), and performing ultrasonic treatment, filtration and drying to obtain a mixture; and (3) spraying an epoxy resin solution on the surface of the mixture obtained in the step (2), and grinding to obtain the high-efficiency polyester flame retardant. According to the flame-retardant polyester material disclosed by the invention, various components are synergistically matched, a compact carbon layer is formed during combustion, heat is prevented from being transferred to a polyester matrix, a flame-retardant effect is achieved, and the inorganic components, the epoxy resin coating and the like can change the mechanical properties of the polyester material.

The invention relates to the technical field of water-based epoxy ester resin, and particularly discloses organic-inorganic hybrid water-based acrylic acid modified epoxy ester resin and a preparation method thereof in order to solve the problem that hardness and salt spray resistance of an existing epoxy ester resin coating are difficult to consider at the same time. Raw materials of the epoxy resin comprise 25-35 parts of epoxy resin, 22-30 parts of dry vegetable oleic acid or semi-dry vegetable oleic acid, 6-10 parts of a hard monomer, 5-15 parts of an inorganic precursor, 4-6 parts of reflux xylene, 3-5 parts of carboxyl acrylic acid, 0.4-0.6 part of an initiator, 0.05-0.25 part of a catalyst and 20-25 parts of an alcohol ether cosolvent. Specific preparation raw materials and production process conditions are adopted to construct the organic-inorganic hybrid water-based acrylic acid modified epoxy ester resin with a stable and uniform structure and a composite network structure, and the epoxy ester resin not only has remarkable hardness, but also has good water resistance, salt fog resistance and drying speed; the epoxy ester resin coating can be suitable for more application scenes.

The invention discloses an external prestressing CFRP (carbon fiber reinforced plastic) rib steel-concrete combined wind power tower drum and a construction method thereof, the external prestressing CFRP rib steel-concrete combined wind power tower drum comprises a sectional concrete tower drum, a steel tower drum section, an external prestressing system and a sectional tensioning device, the sectional concrete tower drum is formed by connecting a plurality of prefabricated concrete drum sections through reducing sections; the bottom of the steel tower cylinder section is connected with the concrete cylinder section through a flange, the external prestress system comprises CFRP ribs which are evenly distributed in the longitudinal direction of the outer wall of the concrete cylinder section, the CFRP ribs are adopted to replace traditional steel strands, the surfaces of the CFRP ribs are coated with weather-resistant epoxy resin coatings, the anchoring ends are sealed through sealant, corrosion of complex environments such as seaborne and saline-alkali soil can be effectively resisted, and the service life of the steel tower is prolonged. And the CFRP ribs have the characteristics of light weight and high strength, and are combined with a steel-concrete combined structural form, the steel tower drum section is adopted at the upper part, and the concrete drum section is adopted at the lower part, so that the light weight of the wind power tower drum is realized on the premise of ensuring the overall rigidity and the anti-fatigue performance of the structure.

The invention relates to the technical field of chemical fertilizer preparation, and discloses a special synergistic pesticide fertilizer for a ratoon cane seedling stage, a preparation method and application thereof, the pesticide fertilizer adopts a core-shell layered structure, and comprises a core fertilizer layer, a pesticide layer and a resin coating layer from inside to outside in sequence; the medical fertilizer comprises the following components: 20-40% of an organic fertilizer; 20%-40% of inorganic nitrogen fertilizer; 5%-20% of a medium element fertilizer; 0.1%-2.5% of an insecticide; 0.1%-2.5% of a bactericide; 0.5%-5% of a composite slow release agent; 0.4%-2% of a resin coating material; and the balance of filler. By optimizing a formula and a preparation process, synergistic release of fertilizer nutrients and pesticide active ingredients is realized, nutrient requirements and disease and pest control requirements of ratoon sugarcanes in the seedling stage are met, the budding rate is remarkably increased, the withered seedling rate is reduced, and yield and income are finally increased; the stability and effectiveness of each component in the pesticide fertilizer can be effectively ensured; through precise application, multiple effects of the pesticide fertilizer are exerted to the maximum extent, and a standardized technical scheme is provided for seedling management of ratoon sugarcanes.

The invention discloses an anti-ultraviolet epoxy resin coating and a preparation method thereof, and belongs to the technical field of epoxy resin coatings. Comprising a component A and a component B, wherein the component A comprises the following raw materials in parts by weight: 80-90 parts of bisphenol A epoxy resin, 5-8 parts of a reactive diluent, 10-15 parts of modified titanium dioxide, 2-6 parts of an anti-ultraviolet agent, 0.2-0.5 part of a defoaming agent and 0.2-0.5 part of a flatting agent. And the component B is a curing agent. The modified titanium dioxide and the self-made anti-ultraviolet agent are introduced, and the modified titanium dioxide and the self-made anti-ultraviolet agent can achieve a synergistic effect, so that the anti-ultraviolet performance of the coating is remarkably improved; wherein the modified titanium dioxide has better compatibility with an epoxy resin matrix, the dispersion is more uniform, and the problem that traditional inorganic nanoparticles are easy to agglomerate is avoided; in conclusion, the prepared coating has stable and efficient anti-ultraviolet performance and has important application value in the field of epoxy resin coatings.

The invention belongs to the technical field of epoxy resin wear-resistant coatings, and discloses a modified wear-resistant anticorrosive resin coating and a preparation method thereof. And adding a modifier into the homogeneous mother liquor, and uniformly mixing for reaction to obtain the liquid modified wear-resistant anticorrosive coating. Then standing to eliminate bubbles generated in the reaction process; and finally, curing to obtain the solid modified wear-resistant anticorrosive resin coating. According to the invention, polyphenyl-terminated hydroxyl group siloxane is used as a filler, hydroxyl is used for reacting with an epoxy group in a matrix, and homogeneous toughening is carried out to crosslink the polyphenyl-terminated hydroxyl group siloxane into a curing network of epoxy resin, so that the risk of cracking of the coating is reduced; through the synergistic effect of a rigid ring benzene ring and a flexible bond Si-O, the hardness of a paint film can be improved, the brittleness of the paint film is reduced, and the possibility that the paint film is cracked due to impact is reduced.

The present application relates to the technical field of resin coating, and particularly relates to a preparation method of modified acrylic resin and application thereof, which comprises the following steps: firstly, hydrolysis and condensation of multiple organosilicon alkoxyl monomers, then grafting with epoxy resin to obtain organosilicon-epoxy resin containing vinyl; subsequently, under the protection of nitrogen, a premixed solution of styrene, multiple acrylate monomers, initiator and solvent is added dropwise into a reaction kettle containing the resin, and after polymerization by staged heat preservation, parameters are adjusted to obtain the modified acrylic resin. The resin has a ternary hybrid structure of acrylic acid, epoxy and organosilicon through grafting, condensation and copolymerization, and has good film forming property, high adhesion, excellent high temperature resistance and flexibility. The coating prepared by using the resin can realize normal temperature self-drying, and the coating layer is dense and smooth, has strong adhesion, good corrosion resistance and impact resistance, and can withstand high temperature and cold cycle, and is suitable for protection of parts which need long-term high temperature and corrosion resistance.

The invention provides a carbon fiber induction heating closed-loop intelligent control system and method, and relates to the technical field of carbon fiber processing equipment, and the system comprises an unwinding device, a dipping device, a heating curing device, a winding device and a rack; the unwinding device, the dipping device, the heating and curing device and the winding device are all arranged on the rack; the unwinding device comprises an unwinding servo motor, an unwinding roller and a first guide roller; the dipping device comprises a dipping tank, a second traction roller and a first traction roller; liquid resin is contained in the dipping tank, and the dipping tank is used for carrying out resin coating and preliminary infiltration on carbon fibers; the heating and curing device comprises a shell, an iron core, a conductive roller, an insulating roller, a magnet exciting coil and a sensor group; the iron core, the conductive roller, the insulating roller, the magnet exciting coil and the sensor group are all arranged in the shell; the excitation coil is sleeved on the iron core; the insulating roller and the conductive roller are used for clamping carbon fibers; the winding device comprises a winding servo motor, a winding roller and a second guide roller.

The present disclosure relates to a cover plate, including a cover plate body including a bending area and non-bending areas located at two sides of the bending area, where each of the non-bending areas includes a glass substrate and the bending area includes a first optical resin coating layer formed by a coating process using an optical resin material. The present disclosure also relates to a display module and a display device. The cover plate body includes at least two structures of the first optical resin coating layer and the glass substrate, where the first optical resin coating layer with a strong bending performance is provided in the bending area and the glass substrate with a strong impact strength is provided in the non-bending areas so as to solve a problem that impact strength and bending performance of the cover plate only made of the glass substrate cannot be balanced.

The invention belongs to the technical field of anti-corrosion pipelines, and particularly relates to an outer 3PE inner epoxy resin anti-corrosion pipeline and a production process thereof. Medium-frequency preheating; performing internal and external shot blasting to remove rust; carrying out silanization nanoparticle suspension liquid treatment; internal corrosion prevention; epoxy powder coating is sprayed on the outer surface of the steel pipe through an electrostatic spraying technology to form an anti-corrosion bottom layer, and the outer surface of the steel pipe is coated with adhesive and polyethylene to form an adhesive layer and a polyethylene layer. According to the invention, bisphenol A epoxy resin with low molecular weight is selected, and the molten epoxy powder coating has relatively low viscosity and can be fully infiltrated into the bottom of an anchor pattern on the surface of the steel pipe, so that the leveling effect is improved, the leveling time is shortened, and the epoxy resin coating is more uniform; meanwhile, under the promotion of an imidazole group, acid anhydride and bisphenol A epoxy resin are quickly crosslinked and cured to form gel, so that the viscosity of the epoxy powder coating is quickly increased, and sagging is prevented.

The invention relates to the technical field of composite resin coatings, in particular to a water-based composite resin coating and a preparation method thereof. According to the technical scheme, the waterborne polyurethane adhesive comprises the following components in parts by weight: 25-40 parts of waterborne polyurethane dispersion, wherein the waterborne polyurethane dispersion is prepared by reacting isophorone diisocyanate, poly (butylene adipate) glycol, dimethylolpropionic acid, ethylenediamine, polyethylene glycol monomethyl ether, triethylamine and nano cellulose. Through the triple synergistic effect of the nano-cellulose reinforced polyurethane phase, the montmorillonite crosslinked acrylic acid phase, the titanium dioxide and the graphene composite material, the balance of high hardness and high flexibility of the water-based paint is realized, the self-cleaning, antibacterial and corrosion-resistant functions are synchronously achieved, the water-based paint is long-acting and stable, the weather resistance is also remarkably improved to prolong the life cycle of the coating, and the water-based paint has a good application prospect. Excellent performance and environment-friendly value are realized.

The invention relates to a manufacturing method of a high-heat-dissipation circuit board. The manufacturing method comprises the following steps of manufacturing a first multi-layer board and a second multi-layer board; anti-etching photosensitive dry films are attached to the single faces of the first multilayer board and the second multilayer board; etching the exposed copper foil layers of the first multilayer board and the second multilayer board; semi-grooves are machined in the exposed film layers of the first multilayer board and the second multilayer board; the capillary copper pipe is subjected to blocking and browning treatment, and semi-cured resin coating is carried out; the first multi-layer plate and the second multi-layer plate are stacked, and the capillary copper pipe is horizontally arranged in the containing groove; riveting the first multi-layer plate and the second multi-layer plate which are pre-embedded with the capillary copper pipes by using a rivet through electromagnetic hot melting; laminating the riveted first and second multi-layer boards, the outer layer prepreg and the outer copper foil layer by using a vacuum laminating machine to form a semi-finished board; performing ultrasonic nondestructive testing on the semi-finished plate; and post-processing the semi-finished board to obtain the circuit board. According to the manufacturing method, the circuit board with the horizontally-embedded capillary copper pipe is obtained through the processes of film drying, single-face etching, groove milling and the like, and the heat dissipating capacity is increased.

The invention discloses a flame-retardant epoxy resin coating and a preparation process thereof, and relates to the technical field of flame-retardant epoxy coatings. 20-50 parts of a curing agent; 5-30 parts of a modified flame retardant; 10-30 parts of an organic solvent; 0.1 to 5 parts of an auxiliary agent; the modified flame retardant is an organic-inorganic hybrid polymer containing phosphorus, nitrogen and silicon. By introducing a hyperbranched structure containing phosphorus, nitrogen and silicon, synergistic flame retardance of a gas phase and a condensed phase is achieved, a compact carbon layer is formed when the coating is heated, the adhesive force of a coating and a base material is enhanced through the chemical bonding effect, dispersity and toughness are improved through a unique molecular structure, brittle cracking is avoided, and the coating has good flame retardance. The problems that a traditional coating is prone to migration, poor in adhesive force and insufficient in water resistance are solved, and the paint has excellent comprehensive performance.

The invention belongs to the technical field of metal protection, and particularly discloses a gradient temperature-resistant coating system and an application method thereof.The method comprises the steps that a treated coating substrate is immersed in chemical conversion liquid for a reaction, and a compact chemical conversion film is formed on the surface of the substrate; uniformly dispersing metal powder in epoxy-organic silicon resin, spraying the epoxy-organic silicon resin on a substrate with a chemical conversion film, and drying to obtain a bottom layer; spraying a modified organic silicon resin coating on the bottom layer, and drying to obtain a middle layer; ultrasonically dispersing aerogel in ethanol to obtain aerogel suspension, and spraying the aerogel suspension on the middle layer to obtain the outer layer. According to the gradient temperature-resistant coating system disclosed by the invention, through the gradient structure design of strong combination of the bottom layer, temperature stabilization of the middle layer and strong reflection of the surface layer and the component synergistic effect, the technical barrier of dual-temperature-range protection and interlayer coordination is broken through, and the core problems of dual-temperature-range protection splitting, interlayer failure and poor structural durability are solved; and a systematic solution is provided for coating protection in an extreme high-temperature environment.

The present invention relates to the technical field of the electrolysis of water, and specifically relates to a low-hydrogen-permeability proton exchange membrane, and a preparation method therefor and the use thereof. The proton exchange membrane comprises a Pt-containing additive layer and a matrix membrane, wherein the Pt-containing additive layer is composed of a Pt additive and a fluorine-containing proton exchange resin, the Pt-containing additive layer comprises an array layer and a flattening layer, the thickness ratio and the active-component ratio of the array layer to the flattening layer are respectively within the ranges of 1:(0.5-30) and 1:(1-50), and the array layer is composed of arrays arranged in order and an array layer resin coating the arrays. In the low-hydrogen-permeability proton exchange membrane provided by the present invention, by providing the Pt-containing additive layer consisting of the array layer and the flattening layer, the specific surface area of the Pt-containing additive layer is effectively increased by means of the arrays in the array layer, thereby achieving the efficient utilization of an additive; moreover, the hydrogen permeability improvement effect is further improved by controlling the thickness ratio and the active-component ratio of the array layer to the flattening layer and the parameters of the arrays.

The application belongs to the field of super-hydrophobic materials, and discloses a diamond-UIO-66-(OH)2-epoxy resin composite super-hydrophobic coating as well as a preparation method and application thereof, which comprises the following steps: (1) adding epoxy resin and polyamide curing agent into an organic solvent for ultrasonic dispersion until the solution is clear and transparent to obtain an epoxy resin solution; the epoxy resin solution is pre-cured by spraying on a substrate surface to obtain an epoxy resin coating; (2) adding diamond and UIO-66-(OH)2 into an organic solvent for ultrasonic dispersion to obtain a diamond-UIO-66-(OH)2 suspension; (3) spraying the suspension on the epoxy resin coating and drying to obtain the super-hydrophobic coating. The coating has excellent super-hydrophobic performance and self-cleaning performance, the contact angle of water on the surface is as high as 154°, and the rolling angle is as low as 6.5°, so that the coating can be used in the fields of self-cleaning, oil-water separation, drag reduction, corrosion prevention and anti-icing, and has wide applicability.

The invention relates to a slow-release fertilizer with water-retaining and drought-resisting functions, which comprises the following components in percentage by weight: 0-18% of a water-retaining agent compound, 35-45% of a slow-release carrier and 35-60% of a functional additive. The water-retaining agent compound is prepared by mixing 8 parts of polyacrylamide and 4 parts of weathered coal; the slow-release carrier comprises an inner sulfur coating layer with the thickness of 50 microns and an outer polyurethane resin coating layer with the thickness of 80 microns, and the functional additive is formed by mixing 3 parts of zinc sulfate, 2 parts of a mixed microbial agent, 20 parts of soybean meal, 5 parts of humic acid and 20 parts of light calcium carbonate. The water and fertilizer coupling efficiency is improved, the stress resistance of crops is enhanced, the ecological systematicness of soil is improved, the environmental and economic benefits are improved, and the problems that an existing chemical fertilizer is single in function and limited in soil improvement effect are solved.

The invention relates to the technical field of environment-friendly epoxy resin coatings, in particular to an environment-friendly high-temperature-resistant and wear-resistant epoxy resin anticorrosive coating and a preparation method of the environment-friendly high-temperature-resistant and wear-resistant epoxy resin anticorrosive coating. The component A is prepared from the following raw materials in parts by weight: 30 to 50 parts of waterborne epoxy resin emulsion, 0.4 to 0.8 part of dispersing agent, 0.3 to 0.5 part of flatting agent, 0.3 to 0.5 part of defoaming agent, 0.4 to 0.8 part of wetting agent, 0.4 to 0.6 part of thickening agent, 5 to 10 parts of anti-rust pigment, 0.3 to 0.5 part of anti-flash-rust agent, 3 to 5 parts of precipitated barium sulphate, 8 to 10 parts of modified filler and 10 to 30 parts of deionized water; the component B comprises the following raw materials in parts by weight: 3-5 parts of an epoxy curing agent and 4-6 parts of deionized water; the molar ratio of epoxy groups in the water-borne epoxy resin emulsion to amino groups in the epoxy curing agent is 1: (1.1-1.3). The epoxy resin coating prepared by the invention has excellent high temperature resistance, wear resistance and corrosion resistance.

The invention relates to a method for applying a floor protection system, comprising the steps of (i) applying a liquid epoxy resin coating to a floor surface, (ii) scattering the freshly applied, still liquid epoxy resin coating with a bio-based granular material G1, (iii) hardening the scattered coating under ambient conditions, (iv) optionally followed by mechanically removing bio-based granular material G1 not incorporated into the coating, wherein the bio-based granular material G1 has a particle size distribution of 0.2 to 2 mm and a volume-based d50 value of 0.3 to 1.3. Scattering with the bio-based granular material G1 makes possible a surprisingly uniformly structured surface which can be over-coated very well with commercially available epoxy resin seals. The sealed floor protection system has a robust, anti-slip surface with surprisingly high abrasion resistance at the level of a corresponding floor protection system scattered with quartz sand.

An incineration system rotary kiln water jacket anti-corrosion device relates to the technical field of chemical equipment and comprises a water jacket body, an epoxy resin coating is arranged outside the water jacket body, a vinyl resin coating is arranged outside the epoxy resin coating, an anti-corrosion reinforcing layer is arranged outside the vinyl resin coating, and a protective steel shell is sleeved outside the anti-corrosion reinforcing layer. The anti-corrosion reinforcing layer comprises an inner steel pipe, an outer turning cover, longitudinal steel bars, arc-shaped steel bars and supporting bars. The corrosion resistance of the water jacket body is improved through the epoxy resin coating and the vinyl resin coating adopted by the incineration system rotary kiln water jacket corrosion prevention equipment; and by adopting the anti-corrosion reinforcing layer, the anti-corrosion property of the water jacket is improved, the mechanical strength of the water jacket is improved, the service life of the water jacket is prolonged, and the cost of production equipment is reduced.

The invention discloses a gradient composite reinforced anti-corrosion treatment method for a metal alloy guardrail, and belongs to the technical field of metal material surface treatment. The method comprises the following steps: carrying out ultrasonic cavitation micro-etching and electrochemical gradient activation pretreatment on the surface of a substrate; a metal ceramic composite layer containing a non-oxide ceramic reinforced phase is generated on the surface in situ through a micro-arc oxidation-chemical vapor deposition coupling process, and a component transition layer is formed with the assistance of vacuum gradient diffusion alloying treatment; and finally, coating an intelligent resin coating containing a corrosion inhibitor capsule and a corrosion indicator, and constructing a super-hydrophobic surface. By constructing a multi-layer composite protection system of the gradient diffusion layer / the metal ceramic layer / the intelligent coating / the super-hydrophobic layer, the anti-corrosion performance is remarkably improved, and the obtained guardrail has excellent bonding strength, wear resistance and long-acting anti-corrosion service life, has the intelligent functions of damage self-repairing and corrosion state visualization and is suitable for popularization and application. The method is especially suitable for harsh service environments.

An oil-well metal pipe according to the present disclosure includes a resin coating on or above at least one of a pin contact surface and a box contact surface. The resin coating contains: a resin: 50.0 to 99.5 mass %, a wax: 0 to 10.0 mass %, a fluorine-based additive: 0 to 30.0 mass %, graphite: 0 to 10.0 mass %, a rust preventive pigment: 0 to 30.0 mass %, a coloring pigment: 0 to 10.0 mass %, a coupling agent: 0 to 10.0 mass %, and one type or two types selected from a group consisting of a magnesium silicate hydroxide powder: 1.5 to 50.0 mass % and TiO2: 0.5 to 30.0 mass %; and satisfies Formula (1).(W+F+G) / (M+T)≤5.00  (1)

The invention discloses a fuel assembly assembling method and belongs to the field of nuclear power. The method comprises the following steps: immersing the zirconium alloy pipe fitting into a shellac resin coating agent dissolved by ethanol, then taking out and drying to form a protective paint film on the surface of the zirconium alloy pipe fitting; and after the fuel assembly is assembled by pulling the rod, the fuel assembly is immersed in a release agent to remove the protective paint film. The method can effectively reduce the risk of damage to the surface coating of the zirconium alloy pipe fitting in the assembling process, and improves the service life and reliability of the fuel assembly.

The invention belongs to the technical field of anticorrosive and antibacterial coatings, and particularly relates to a self-repairing antibacterial anticorrosive coating and a preparation method thereof. The core-shell structure nanofiber membrane with a high polymer material as a shell and a metal corrosion inhibitor as core liquid is prepared by adopting a coaxial electrostatic spinning technology. An epoxy resin coating is sprayed on an iron sheet in advance, the sprayed epoxy resin is subjected to low-temperature pretreatment to be in a semi-solidified state, and a core-shell structure nanofiber membrane is attached to the pretreated epoxy resin coating; and finally, spraying the epoxy resin containing the antibacterial agent and the antibacterial agent ethanol solution on the surface of the fiber membrane again to prepare the composite coating with a sandwich structure. The prepared composite coating has good antibacterial ability, after the iron sheet coating is damaged, the anti-corrosion coating can rapidly release an anti-corrosion healing agent to rapidly repair the damaged part of the coating, and the composite coating has efficient self-repairing anti-corrosion ability and has good application prospects in the anti-corrosion field.

The invention provides an organic resin coating film as well as a preparation method and application thereof. The organic resin coating film comprises a polyester base film and an organic resin coating layer arranged on one side or two sides of the polyester base film, the organic resin coating comprises organic resin, a curing agent, an inorganic filler and a surfactant; the average surface roughness Ra of the organic resin coating ranges from 200 nm to 400 nm. The organic resin coating is loaded on one side or two sides of the polyester base film, so that the thermal stability, corrosion resistance and surface adhesion of the polyester base film are improved, and when the polyester base film is used for the composite current collector, the phenomena of wrinkle shrinkage of the base film, stripping of a metal layer, corrosion of electrolyte to the composite current collector, cyclic diving and the like can be effectively prevented.

The utility model discloses a floor board with a good stain-resistant effect, which comprises a board body, a wear-resistant layer is arranged on the outer surface of the board body, the wear-resistant layer comprises a polyurethane coating and a fluorocarbon rubber coating, a stain-resistant layer is arranged on the outer surface of the wear-resistant layer, the stain-resistant layer comprises a polypropylene coating and an epoxy resin coating, the board body comprises a substrate layer, and the substrate layer comprises a polyurethane coating and a fluorocarbon rubber coating. A clamping groove part is arranged on the left side of the base layer, a protruding part is arranged on the right side of the base layer, the polyurethane coating is arranged on the outer surface of the plate body in a coating mode, the fluorocarbon rubber coating is arranged on the outer surface of the polyurethane coating in a coating mode, the polypropylene coating is arranged on the outer surface of the fluorocarbon rubber coating in a coating mode, and the epoxy resin coating is arranged on the outer surface of the polypropylene coating in a coating mode. According to the utility model, the stain-resistant layer is arranged, the epoxy resin coating contained in the stain-resistant layer can carry out first-layer stain-resistant protection treatment on the plate body, and the polypropylene coating can carry out second-layer stain-resistant protection treatment on the plate body after the epoxy resin coating is damaged, so that the stain resistance of the whole plate body is effectively improved.