286results about "Paints for electrolytic applications" patented technology

The invention discloses a low-temperature curing high-throwing-power cathode electrophoretic coating and a preparation method and application thereof, and belongs to the field of automobile coating materials, the coating is composed of epoxy resin, a fluorosilicone copolymerization type epoxy modifier, a polyamino siloxane-acrylic acid hybrid and other components, and performance improvement is achieved through the synergistic effect of the two brand-new modifiers. Wherein the fluorine-silicon copolymerization type epoxy modifier is prepared by taking bisphenol A epoxy resin as a framework, introducing fluorine-containing alkyl and siloxane groups and carrying out ultraviolet reaction, so that the surface energy is reduced, and low-temperature crosslinking is promoted; the polyamido siloxane-acrylic acid hybrid takes siloxane as a core, and acrylic acid and polyamido are bridged through isocyanate, so that the crosslinking density and the water solubility are enhanced. When the coating is prepared, the two modifiers are mixed with epoxy resin, a solvent and the like, and the coating is prepared through dispersion and dilution. The coating can be cured at low temperature, so that a uniform thick film is obtained in an inner cavity of a complex workpiece, and meanwhile, the coating has excellent corrosion resistance and adhesive force and is suitable for efficient and environment-friendly coating of an automobile body and parts.

The invention relates to the technical field of high polymer materials, in particular to a high-hardness wear-resistant electrophoretic coating and a preparation method thereof, and the high-hardness wear-resistant electrophoretic coating comprises the following components in parts by mass: 40-60 parts of polyether modified epoxy resin, 5-15 parts of Al2O3-coated SiO2 modified composite powder, 2-5 parts of a neutralizer, 0.5-2 parts of a flatting agent, 0.2-1 part of a defoaming agent, 3-8 parts of a curing agent and 15-30 parts of deionized water. By optimizing the components and the process, the electrophoretic paint capable of preparing a stable high-strength and high-wear-resistance coating is prepared.

The invention discloses a preparation process of a rare earth precipitation resistant electrophoretic coating for an automobile body. The preparation process comprises the following steps: S1, preparing a stable solution; s2, preparing a rare earth chelating solution; adding lanthanum lactate into the stable solution for multiple times, and adding ammonium ceric sulfate for multiple times after the lanthanum lactate is completely dissolved; s3, preparing a resin base solution; s4, preparing mixed slurry; s5, adding a solvent and an auxiliary agent; a five-membered ring chelate with thermodynamic stability is formed by carboxyl, hydroxyl and rare earth elements in sodium citrate, rare earth ions can be tightly wrapped through strong coordination bonds, namely, empty orbits of the rare earth ions and lone pair electrons of a chelating agent form coordination bonds, so that the rare earth ions cannot be dissociated in a system, and the rare earth ions are prevented from being dissociated in the system. And a path of generating hydroxide precipitates by free rare earth ions is thoroughly blocked, so that rare earth elements are effectively ensured to be uniformly distributed in the electrophoretic paint, and the surface of a raw material treated by a subsequent electrophoresis process is more uniform.

The invention belongs to the technical field of coating compositions, and discloses an electrophoretic coating with high weather resistance and high salt mist resistance and a preparation method thereof. According to the coating, a composite pigment and filler system formed by compounding a surface-modified sheet-shaped physical shielding filler and a calcium / zinc double-ion exchange type corrosion inhibition filler is adopted, and the surface-modified sheet-shaped physical shielding filler forms a compact labyrinth structure to prolong a corrosion medium permeation path; the corrosion inhibition filler releases Ca < 2 + > / Zn < 2 + > under the stimulation of chloride ions to generate a composite precipitation membrane in situ to block electrochemical corrosion; the two components are co-ground and pre-dispersed and chemically bonded with a resin matrix through a silane coupling agent, so that the compactness, the adhesive force and the self-repairing capability of the coating are improved. The electrophoretic coating does not contain hexavalent chromium and is suitable for high-end protection scenes such as automobiles and ocean engineering.

Disclosed herein is an aqueous cathodically depositable electrodeposition coating material composition including at least one binder dispersion (I) including at least one cathodically depositable polymer (a) and at least one pigment paste (II) including at least one pigment and / or filler, where manufacture of the electrodeposition coating material composition includes mixing the binder dispersion (I) and the pigment paste (II), and where the composition also includes at least one alkoxylated polyethyleneimine (b) and where at least one alkoxylated polyethyleneimine (b) is part of the at least one binder dispersion (I) and / or part of the at least one pigment paste (II).

To provide an environmentally friendly fire retardant thermal insulation paint, excellent in adhesiveness of a coating, difficult to fall off, and having relatively high fire retardancy, thermal insulation and crack resistance and a producing method thereof.SOLUTION: A fire-retardant thermal insulation paint is produced from raw materials composed, by weight percentage, of 8 to 15% styrene-acrylic emulsion, 10 to 18% adhesion promoter, 10 to 20% thermal insulation agent, 20 to 30% fire retardant, 2 to 5% wetting dispersant, 3 to 6% viscosity modifier, 4 to 9% other additives, and the remainder water. The producing method is as follows: In step S1, the viscosity modifier and water are mixed to prepare a mixed solution; in step S2, the adhesion promoter and wetting dispersant are mixed with the mixed solution to prepare a dispersion; in step S3, the fire retardant is mixed with the dispersion to prepare a flame-retardant dispersion; and in step S4, the styrene-acrylic emulsion, thermal insulation agent, and other additives are mixed with the fire-retardant dispersion.SELECTED DRAWING: None

The invention belongs to the technical field of coatings, and discloses a corrosion-resistant high-impact-resistant electrophoretic coating and a preparation method thereof. The coating comprises a cationic water-based resin emulsion, flaky nano clay with epoxy groups grafted on the surface, a curing agent, a cosolvent and a functional additive, the core of the method is that through electric field driving in the electrophoretic deposition process, resin micelles and modified nano clay form a bionic micro-nano laminated structure in which hard inorganic sheet layers and flexible organic layers are alternately arranged on the surface of a cathode in situ, and interface bonding between the sheet layers is enhanced through chemical bonding. The bionic micro-nano laminated structure with clear periodicity and a chemical bonding interface is constructed through an in-situ co-deposition technology driven by an electric field, and the contradictions that hardness and toughness cannot be achieved at the same time and impact resistance and corrosion resistance are difficult to cooperate in the prior art are solved; the method is suitable for the high-end industrial fields such as automobile bodies, high-speed rail bogies, offshore wind power towers and the like with strict requirements on comprehensive protection performance.

The invention discloses a high-corrosion-resistance electrophoretic coating and a preparation method thereof, and belongs to the technical field of electrophoretic coatings. The preparation method of the coating comprises the following steps: S1, mixing epoxy resin, a thioether compound with an active group at the end position, a chain extender, triphenylphosphine, an organic solvent 2, an amino catalyst and a neutralizer, and carrying out heat preservation and chain extension to obtain thioether modified epoxy resin; s2, aminating, neutralizing and re-emulsifying the thioether modified epoxy resin in the step S1, an aminating agent, an organic solvent 1, a curing agent, a neutralizing agent and deionized water to obtain a high-corrosion-resistance emulsion; s3, mixing and grinding the thioether modified epoxy resin in the step S1 with pigment, a dispersing agent and deionized water to obtain high-corrosion-resistance color paste; s4, mixing the high-corrosion-resistance emulsion in S2 and the high-corrosion-resistance color paste in S3 according to the mass ratio of 4: 1 to 8: 1 to obtain the high-corrosion-resistance electrophoretic coating. And by adopting the thioether modified epoxy resin, the obtained coating has excellent corrosion resistance, mechanical property and flame retardant property at the same time.

The invention provides an edge-corrosion-resistant auxiliary agent for a cathode electrophoretic coating and a preparation method of the edge-corrosion-resistant auxiliary agent, and belongs to the technical field of cathode electrophoretic paints.The preparation method comprises the following steps that amino-terminated nitrile rubber and polypropylene glycol diglycidyl ether are subjected to an addition reaction in a solvent, and epoxy resin modified amino-terminated nitrile rubber is obtained; mixing the epoxy resin modified amino-terminated nitrile rubber with a solvent, adding a mixture of the solvent and benzoyl peroxide into the mixture, and carrying out polymerization reaction to obtain repolymerized epoxy resin modified amino-terminated nitrile rubber; and sequentially adding acid water and deionized water, and stirring to obtain the edge corrosion resistant auxiliary agent. According to the cathode electrophoretic paint, the amino-terminated nitrile rubber is modified by the polypropylene glycol diglycidyl ether, so that the mechanical property and the flexibility of the cathode electrophoretic paint are improved; and then benzoyl peroxide is used for initiating repolymerization of the epoxy modified nitrile rubber to reduce the fluidity of the electrophoretic paint in the baking process, so that the edge corrosion resistance of the cathode electrophoretic paint is improved.

To provide a biocompatible article by grafting an organic coated film onto a conductive or semi-conductive surface.SOLUTION: There is provided a biocompatible article containing an organic coated film acceptable for ionic transportation with a conductive or semi-conductive surface or a part of the surface, electrically grafted to the surface or the part thereof, and electrically grafted to the surface or the part thereof by electric reduction of a solution containing at least one kind of diazonium salt, and a chain polymerizable functional group, and at least one kind of macro article which is a precursor material of the organic coated film.SELECTED DRAWING: Figure 1

The present invention provides a cationic electrodeposition coating composition with a rust prevention property enhanced by improving the adhesion and the blocking property of a coating film obtained from a cationic electrodeposition coating composition as compared with conventional ones. The present invention provides a cationic electrodeposition coating composition including an aminated epoxy resin and a blocked polyisocyanate curing agent, wherein the aminated epoxy resin is an aminated epoxy resin obtained by reacting an amine compound with an epoxy resin, the aminated epoxy resin has a molecular weight distribution of 2.7 or less, and a rate of elongation of an electrodeposition coating film formed by applying the cationic electrodeposition coating composition to a steel sheet such that a cured film thickness is 20 μm, followed by baking at 160° C. for 15 minutes, is 0.1 to 4.5%.

The invention relates to the technical field of cathode electrophoretic paint, and discloses an asymmetric double-blocked isocyanate curing agent as well as a preparation method and application thereof. Based on the reaction activity difference of primary carbon and secondary carbon NCO groups in isophorone diisocyanate molecules, a step-by-step asymmetric sealing strategy is adopted: in the first stage, a hydrophilic chain extender containing a tertiary amine structure is utilized to preferentially react with high-activity primary carbon NCO, and an internal catalytic center and a hydrophilic group are anchored in a molecular skeleton; and in the second stage, the active methylene compound and the bio-based long-chain phenol are used for carrying out hybrid dual-sealing on the residual secondary carbon NCO with relatively large steric hindrance. According to the preparation of the curing agent, the curing agent integrates internal catalysis, stepped curing and self-emulsifying functions, the deblocking energy barrier is effectively reduced, and 140-DEG C low-temperature curing or high-temperature high-performance curing can be realized under the tin-free catalysis condition.

The invention relates to the technical field of electrophoresis coatings, in particular to an electrophoresis-non-electrophoresis composite coating and a preparation method thereof. The invention provides an electrophoresis-non-electrophoresis composite coating. The composite coating comprises an electrophoresis coating and a non-electrophoresis coating compounded on the surface of the electrophoresis coating, the component of the electrophoretic coating comprises polyimide; the component of the non-electrophoretic coating comprises macromolecular resin; the absolute value of the difference between solubility parameters of the polymer resin and the polyimide is less than 1.3 (J / cm < 3 >) 1 / 2; according to the prepared electrophoresis-non-electrophoresis composite coating, the excellent adhesiveness between an electrophoresis coating and a non-electrophoresis coating can be guaranteed, and the comprehensive performance, such as insulativity, scratch resistance, cohesiveness, corona resistance and / or PDIV, of the composite coating can be effectively improved.

The present invention provides a method for producing a polymeric composite of a cathodically depositable polymer and a polymerizable polymeric composite of a cathodically depositable polymer, comprising: (I) at least one aqueous binder dispersion comprising at least one cathodically depositable polymer (a) and at least one crosslinker component (b); (II) at least one pigment paste containing at least one pigment and / or filler (c) and at least one polymer as grinding resin; The present invention relates to an aqueous cathodically depositable electrodeposition coating material composition comprising: wherein the composition also comprises at least one composite particle (p) comprising at least one metal-containing catalyst (pc) and at least one (meth)acrylate polymer (mp).

The present invention discloses an insulating coating composition suitable for electrodeposition coating, comprising the following components by weight: 20%-30% of a novolac epoxy or cyclohexanediamine-modified polyphenylene ether multi-branched polymer, 10%-25% of a blocked isocyanate curing agent, 0.1%-0.5% of an acetylenic diol wetting and dispersing agent, 1%-5% of methanesulfonic acid, 0%-50% of a first batch of deionized water, 8%-20% of a second batch of deionized water, and 1%-5% of a polyvinyl alcohol aqueous solution; and a method for preparing the insulating coating composition. The coating of the present invention has excellent insulation, corrosion resistance, and resistance to moisture and heat.

This invention belongs to the technical field of water-based cathodic electrophoretic coatings, specifically relating to a low-temperature curing cathodic electrophoretic coating with high edge coverage and its preparation method. The preparation method includes: firstly, synthesizing a cationic epoxy resin with allyl double bonds in the side chain as the main resin; then pre-incorporating a phenolic resin oligomer and a quaternary phosphine salt latent base into the resin, followed by neutralization and emulsification to obtain a mother liquor; simultaneously, preparing thermally triggered microcapsules with melamine-formaldehyde as the shell, encapsulating a multifunctional thiol compound and a thermal initiator; finally, incorporating the microcapsules into the resin mother liquor to obtain the final product. This invention successfully solves the technical challenge of simultaneously achieving low-temperature curing and high edge coverage in cathodic electrophoretic coatings. The coating can be completely cured at a low temperature of 148-152℃, with an edge film thickness ratio exceeding 82%, and also exhibits excellent salt spray corrosion resistance exceeding 790 hours, significantly improving the edge protection performance and coating efficiency of the workpiece.

The invention discloses a bio-based electrophoretic paint cross-linking agent composition S1. The bio-based electrophoretic paint cross-linking agent composition S1 comprises the following components: a bio-based polyol component; an isocyanate component; the catalyst comprises an organic bismuth or zinc catalyst; the solvent comprises propylene glycol methyl ether acetate or bio-based propylene carbonate. The electrophoretic paint cross-linking agent composition S2 comprises the following components: a cyclic carbonate monomer; a polyene polyamine; a thiol-ene click chemical reagent; an end-capping reagent and an organic tin catalyst component. An electrophoretic paint composition is prepared from the bio-based electrophoretic paint cross-linking agent composition. The invention provides a polyisocyanate cross-linking agent taking castor oil and bio-based polycarbonate diol as raw materials and a carbamate cross-linking agent prepared from cyclic carbonate and polyene polyamine, and the polyisocyanate cross-linking agent and the carbamate cross-linking agent have the following advantages that the bio-based content is greater than or equal to 60%, and the consumption of petroleum resources is reduced; the curing temperature is not more than 140 DEG C; vOC emission is reduced by more than 30%; and the adhesion, salt fog resistance and other properties of the coating reach or exceed those of a traditional system.

The present invention provides an epoxy resin that has excellent curability, when a lowactivity catalyst is used or when used at low temperatures, that has excellent storage stability, and that yields a coating material having excellent coating film finish properties and corrosion resistance. The present invention further addresses an object of providing an amine-modified epoxy resin produced by reacting the epoxy resin with an amine compound, as well as providing a cationic electrodeposition coating material containing the amine-modified epoxy resin. The solution provided is a modified epoxy resin produced by reaction of at least the following (i) and (ii) and having an average polyfunctionalization degree (X1) per molecule of the modified epoxy resin of 0.10 or greater: (i) a compound (α) having one or more epoxy groups, (ii) a compound (β) having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 3 or greater, and / or a compound (γ)having a functional group that is reactive with an epoxy group and that has a total functionality of the functional group of 1 or 2, and the average polyfunctionalization degree (X1) per molecule of the modified epoxy resin being represented by Equation (1) below: Equation (1): Average Polyfunctionalization Degree (X1) = Number of Terminals Per Molecule of Modified Epoxy Resin - 2

The invention relates to the technical field of electrophoretic paint, and particularly discloses electrophoretic paint based on a phase change material, a composite coating, a preparation method and application. The electrophoretic paint based on the phase-change material is prepared from the following raw materials in parts by weight: 10-15 parts of phase-change material microcapsules MicroPCM, 35-70 parts of epoxy resin, 15-25 parts of TPU resin, 1-3 parts of an anti-settling agent and 0.5-2 parts of other auxiliaries, the phase change material microcapsule MicroPCM is subjected to surface spraying treatment by using a functional additive before application, and the functional additive comprises the following components in parts by weight: 2-5 parts of graphene oxide, 0.8-1.2 parts of lauryl sodium sulfate, 5-10 parts of propylene glycol monomethyl ether and 80-90 parts of a polyvinyl alcohol solution. According to the application, the dispersity and compatibility of the phase-change material microcapsule MicroPCM in the electrophoretic paint can be improved through the application of the functional additive, so that the formed electrophoretic paint layer structure can show excellent temperature control stability, and further the stable exertion of the corrosion resistance of the outer composite layer structure of the battery shell is ensured.

The application discloses a surface treatment process of an aluminum alloy profile and belongs to the technical field of aluminum alloy processing. The aluminum alloy profile is immersed into an oil removal cleaning solution, and the pretreatment of the aluminum alloy profile is completed under the assistance of ultrasonic waves. The pretreated aluminum alloy profile is used as an anode, and anodic oxidation treatment is carried out under the assistance of ultrasonic waves and constant voltage. The anodic oxidation treatment is stopped when particles are generated in an electrolyte through a liquid particle counting system. The aluminum alloy profile after the anodic oxidation treatment and cleaning is used as a cathode to carry out electrophoretic treatment. Then, the cathode is taken out and washed with clean water for 3-5 times. After being dried at room temperature, the aluminum alloy profile is dried at 140 DEG C for 30 min, and the electrophoretic coating is completed. Fluorine atoms are introduced into the electrophoretic paint during preparation, which is helpful to increase the corrosion resistance and wear resistance of the paint film. The liquid particle counting system is used for monitoring during the anodic oxidation treatment, so that the anodic oxidation is prevented from being excessive, and the paint film with better adhesion and smoothness is formed.

This application relates to a highly water-mark-resistant cathodic electrophoretic emulsion and its preparation method, belonging to the field of electrophoretic coating technology. The preparation method of the highly water-mark-resistant cathodic electrophoretic emulsion includes the following steps: S1. Blocking some isocyanate groups of toluene diisocyanate with a mixture of n-butanol and PEG400, and then reacting and bonding the unblocked isocyanate groups with oleamide resin and polyamine to obtain a polyamine-modified isocyanate curing agent; S2. Performing a ring-opening amination reaction between epoxy resin and a first amine compound, and then adding a second amine compound to continue the reaction to obtain an amine-modified epoxy resin; S3. Grafting the polyamine-modified isocyanate curing agent onto the amine-modified epoxy resin to obtain a cationic epoxy resin; S4. Neutralizing the cationic epoxy resin with an organic acid, adding deionized water for emulsification and dispersion to obtain the highly water-mark-resistant cathodic electrophoretic emulsion. After electrophoretic film formation, the emulsion exhibits good hydrophilicity on the wet film surface, thereby significantly reducing the formation of watermarks during rapid baking.

The invention provides a full-matte black cathode electrophoretic coating and a preparation method thereof, and belongs to the field of cathode electrophoretic paints.The preparation method comprises the steps that epoxy resin, bisphenol A, polyester resin and a carboxyl compound are mixed, a benzylamine catalyst, an ether solvent auxiliary and a plasticizer are added, then an amine compound is added for an amination reaction, and the full-matte black cathode electrophoretic coating is obtained. Carrying out first emulsification treatment to obtain epoxy emulsion; carrying out copolymerization reaction on an acrylic monomer and styrene under the action of an initiator to obtain acrylic resin, and carrying out second emulsification treatment to obtain an acrylic resin emulsion; uniformly mixing and dispersing the grinding resin with deionized water, a solvent, a dispersing agent, an auxiliary agent, pigment carbon black, filler, aluminum triphosphate and organic acid, and grinding to obtain black slurry; and uniformly mixing the epoxy emulsion, the acrylic resin emulsion, the black slurry and water, and curing to obtain the full-matte black cathode electrophoretic coating. The electrophoretic coating disclosed by the invention can realize a stable matte effect without adding matting powder, and is excellent in corrosion resistance and aging resistance.

To provide a cationic electrodeposition coating composition which is excellent in both weld part corrosion resistance and edge part corrosion resistance.SOLUTION: A cationic electrodeposition coating composition contains an aminated resin (A) and a block isocyanate curing agent (B), wherein the cationic electrodeposition coating composition further contains a group III element compound (C), an epoxy viscous agent (D), a lactic acid (E) and a high-boiling point solvent (F) having a boiling point of 235°C or higher, the epoxy viscous agent (D) is an epoxy viscous agent obtained by reacting a liquid epoxy resin, a polycyclic phenol resin and an amine compound, the cationic electrodeposition coating composition has electric conductivity of 1,500-2,300 μS / cm2, and the cationic electrodeposition coating composition has melt viscosity of 6,000-15,000 mPa s.SELECTED DRAWING: None

In one embodiment, an article is described comprising: a substrate; a hardcoat layer disposed on the substrate wherein the hardcoat layer comprises the hydrolyzed and condensed reaction product of a composition comprising: i) first silane monomer(s) having the formula R1Si(OR)3 wherein R and R1 is methyl or ethyl; ii) at least one organic polymer comprises one or more functional groups that react with hydrolyzed OR groups of the first silane monomer(s); iii) at least 10 wt.% of silica nanoparticles; and C) a surface layer comprising a hydrophilic silane disposed on the hardcoat layer. Also described is a hardcoat composition and methods of use. One method comprise writing on the hardcoat layer or surface layer; and removing the writing.

To provide a cationic electrodeposition coating composition that achieves excellent insulation and edge covering performance suitable for electronic components, and an electronic component having a coating film coated with the cationic electrodeposition coating composition.SOLUTION: The foregoing problem is solved by a cationic electrodeposition coating composition comprising a cationic epoxy resin (A), an organic acid zinc compound (B), and a phenolic compound (C).SELECTED DRAWING: None

An adhesion promoter for non-conductive surfaces is disclosed that combines a polyolefin with co-resins in a colloidal suspension in water. The colloidal suspension in water is prepared from mixing a solid-powder composition that includes the polyolefin and the co¬ resins with water. The colloidal suspension in water is applied to a low surface energy, non- conductive substrate, such as thermoplastic olefins, in order to make the substrates conductive for electrostatic painting.

The present invention is directed towards an electrodepositable coating composition comprising a cationic electrodepositable binder; a phyllosilicate pigment; and a dispersing agent. Also disclosed are methods of making the electrodepositable coating composition, coatings derived therefrom, and substrates coated with the coatings derived from the electrodepositable coating composition.

The application discloses an electrophoretic coating liquid, an electrophoretic display panel and a display device. Compared with the prior art, the application adds an enal compound into the electrophoretic coating liquid, the aldehyde group and the double bond of the enal compound react with gelatin and resin monomers or unsaturated resin in the microcapsule wall respectively to form an aldehyde amine condensation and addition reaction, so that a firm molecular structure is formed, the microcapsules are uniformly dispersed in the electrophoretic coating layer, the dispersibility of the microcapsules in the electrophoretic coating layer is improved, appearance defects such as empty points, scratches, convex points and bad points of the electrophoretic coating layer are avoided, and the yield of the electrophoretic display panel is improved. In addition, the enal compound is bonded with the microcapsule wall and the bonding strength between the microcapsules and the glue material is enhanced, so that the cracking of the coating layer caused by bending, folding and the like can be avoided.

The present invention relates to aqueous coating composition (A) for at least partially coating an electrically conductive substrate with an electrocoat comprising (A1) at least one cathodically depositable resin as a binder, (A2) at least one crosslinker, (A3) at least 100 ppm of bismuth based on the total weight of the coating composition (A), and (A4) lithium in a form dissolved in (A), wherein this lithium does not exceed a proportion of 300 ppm based on the total weight of the coating composition (A). The present invention also relates to a process for producing (A), to a coating process and to an at least partially coated substrate obtainable by this process.

This invention belongs to the field of electrophoretic coating technology, specifically relating to a method for preparing color pastes for electrophoretic coatings. The modified waterborne dispersion resin of this invention forms a strong chemical anchoring effect between functional monomers and the pigment surface. Combined with the inertness of the blocked crosslinking agent during storage, this endows the color paste with exceptional dispersion and storage stability, fundamentally ensuring product quality consistency and the reliability of electrophoretic application. Secondly, based on a highly crosslinked dense network structure, the reinforcing effect of nano-barium sulfate, and the synergistic effect of a highly efficient composite catalyst, the final cured paint film exhibits excellent comprehensive performance, possessing superior water resistance, impact resistance, and neutral salt spray resistance. Furthermore, this technology is based on a water-based system and uses an environmentally friendly composite catalyst to replace the toxic organotin catalyst, improving product performance while meeting increasingly stringent environmental regulations, demonstrating significant technological advancement and market application value.