1560results about "Powdery paints" patented technology

There is provided a powder coating material, comprising a copolymer comprising tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 5.0 to 6.2% by mass with respect to the whole of the monomer units, the copolymer has a melt flow rate at 372° C. of 20.0 to 35.0 g / 10 min, and the copolymer has the number of functional groups of 100 or less per 106 main-chain carbon atoms.

The invention relates to an insulating weather-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings, and the powder coating comprises composite modified resin, a dual curing agent, a functional filler, a polyacrylate leveling agent, fumed silica, a benzotriazole ultraviolet light absorber, polytetrafluoroethylene wax powder and the like. A core-shell structure of the composite modified resin is designed, high insulativity is kept through a silane modified epoxy core layer, a weather-proof barrier is provided through an acrylic acid shell layer, and the phase separation problem is solved through interface chemical bonding; a dual-curing mechanism is designed, and isocyanate and acrylic hydroxyl react to form an interpenetrating network while an epoxy core layer is cured by anhydride; a filler synergistic effect is designed, silane coupling agent modified nano boron nitride forms a three-dimensional heat-conducting insulating network, and rutile type titanium dioxide is coated with silicon dioxide, so that ultraviolet aging is resisted. All the components cooperate with one another, so that the coating has excellent insulativity, weather resistance, adhesiveness and the like at the same time.

The invention relates to the technical field of coatings, and discloses a modified hexagonal boron nitride and organic silicon double-component doped high-flame-retardant epoxy resin powder coating as well as a preparation method and application thereof. Comprising the following raw materials in parts by weight: 25-50 parts of modified hexagonal boron nitride, 90-110 parts of organic silicon resin, 120-150 parts of epoxy resin, 5-8 parts of dicyandiamide, 100-120 parts of silica powder, 8-12 parts of other auxiliaries and 80-100 parts of filler. The flame-retardant epoxy resin powder coating is prepared by uniformly mixing the components, melting, extruding a sheet material, grinding and sieving. The flame-retardant and fireproof performance of the epoxy resin powder coating is greatly improved in a modified hexagonal boron nitride and organic silicon double-component doping mode.

The invention discloses a temperature-resistant high-strength powder coating and a preparation method thereof, and belongs to the field of coatings. The invention relates to a temperature-resistant high-strength powder coating which is prepared from the following raw materials in percentage by weight: 40-50% of epoxy resin; 20-30% of polyester resin; 6-10% of a curing agent; 1-3% of a leveling agent; 1-2% of a filler; and the balance of pigment. According to the polyester resin, aliphatic diisocyanate reacts with polyether polyol and hydroxyl silicone oil to obtain a polyurethane prepolymer, and then the polyurethane prepolymer reacts with vinyl benzylamine, an acrylate monomer and an acrylic monomer to obtain the polyester resin. The powder coating has the advantage that the temperature resistance and the strength of the powder coating are improved.

The invention relates to the technical field of insulating materials, in particular to insulating powder and a preparation method thereof. The invention discloses a flame-retardant coating which comprises the following components in parts by weight: 15-25 parts of epoxy resin, 10-20 parts of aluminum hydroxide, 5-12 parts of nano boron nitride, 1-3 parts of a silane coupling agent KH-560, 3-8 parts of polytetrafluoroethylene micro powder, 2-6 parts of fluorine-modified montmorillonite, 4-9 parts of melamine cyanurate, 2-5 parts of nano titanium dioxide, 1-4 parts of a fluorine-modified graphene oxide-polyaniline composite material and 0.5-2 parts of pentaerythritol stearate. The anti-corrosion coating is prepared from the following components in parts by weight: 1 to 3 parts of nano zinc oxide, 5 to 10 parts of glass fiber, 2 to 5 parts of polyhedral oligomeric silsesquioxane-polyimide copolymer, 1 to 4 parts of ferrocenyl epoxy resin and 0.5 to 2 parts of perfluorooctyltriethoxysilane. The insulation powder is high in corrosion resistance, excellent in insulation, heat dissipation and mechanical performance, environmentally friendly in processing, good in adaptability, capable of prolonging the service life of equipment and reducing the cost, suitable for special environments and wide in popularization prospect.

The invention discloses a flame-retardant insulating powder coating for a new energy automobile and a preparation method of the flame-retardant insulating powder coating, and belongs to the technical field of coatings. The flame-retardant insulating powder coating for the new energy automobile is prepared from the following raw material components in parts by mass: 380 to 384 parts of epoxy resin, 56 to 58 parts of a toughening agent, 5 to 10 parts of modified flame-retardant filler, 100 to 101 parts of a composite curing agent, 5 parts of a flatting agent, 1 part of benzoin and 0.7 part of an accelerant, the toughening agent is obtained by carrying out a reaction on an isophorone diisocyanate tripolymer, 4-bromophenol and N-p-coumaroyl tyramine; the modified flame-retardant filler is obtained by firstly wrapping hexagonal boron nitride with polydopamine and then modifying with a silane coupling agent; the silane coupling agent is obtained by combining 4-benzonitrile oxygen butyl trimethoxy silane and a sulfydryl silane coupling agent; and the composite curing agent is obtained by combining 4, 4-diaminodiphenylmethane and amino-sulfydryl functional organic polysiloxane.

The invention discloses a wear-resistant and high-temperature-resistant fluorocarbon powder coating and a preparation method thereof. Comprising the following steps: step 1, adding FEVE resin, a modified filler, a curing agent, a flatting agent and an antioxidant into a high-speed mixer, and mixing for 10-15 minutes until the materials are uniform to obtain a mixed raw material; and 2, transferring the mixed raw material into an extruder, extruding, tabletting, cooling, crushing, and screening with a standard sieve to obtain the fluorocarbon powder coating. The preparation method has the beneficial effects that the modified chitosan and the montmorillonite are compounded, the cerium salt is adopted for further modification, and after the obtained modified filler is added into a coating component, the wear resistance and the high-temperature resistance of a coating are remarkably improved.

The invention provides a preparation method of silicon dioxide serving as a flow promoter in a powder coating. The preparation method comprises the following steps: synthesizing silicon dioxide by using a precipitation method; washing and filter-pressing to obtain a precipitate; re-dispersing and pulping the silicon dioxide by using pure water; performing drying; performing high-temperature crushing; the synthesis of silicon dioxide comprises the following steps: adding bottom water, and heating to 40-100 DEG C; adding water glass and acid into the bottom water in a parallel flow manner under the conditions of constant temperature and pH value of 5.0-10.0; adjusting the pH value to 2.0-4.0 by using an acid; the specific surface area of the silicon dioxide is 100-500m < 2 > / g; the bulk ratio of the silicon dioxide is not higher than 0.30 g / cm < 3 >; the particle size of the silicon dioxide is not higher than 5.0 microns; the methanol value of the silicon dioxide is higher than 30%; the drying weight loss of the silicon dioxide is not higher than 3.0%. The preparation method of the silicon dioxide serving as the flow promoter in the powder coating is simple in process and low in cost.

The invention discloses a high-adhesiveness corrosion-resistant powder coating and a preparation method thereof, and belongs to the technical field of coatings. The powder coating is prepared from the following raw materials: modified epoxy resin, composite modified filler, a curing agent, a flatting agent, a dispersing agent, benzoin, sodium fluoride and the like. The epoxy resin is modified, amino is introduced to enhance the interaction with the grafted phosphate nano-silica, and BYK-163 is introduced, so that the compatibility is improved. In the composite modified filler, nano silicon dioxide A is grafted with a phosphate group, and can form a chemical bond with metal and quickly form a passive film; the nano silicon dioxide B is grafted with a fluorine-containing group, so that the coating is endowed with low surface energy and chemical stability, and long-acting protection is realized. Sodium fluoride destroys metal lattices at high temperature to form anchor points, and adhesive force is improved. The problem that a traditional powder coating is insufficient in adhesive force and corrosion resistance is solved, and the powder coating is suitable for metal protection in various complex environments and has wide application prospects.

Provided herein are powder formulations for a primer coat and a topcoat, and methods of applying the powder formulations to at least a portion of a surface of a substrate. Such methods can include applying a powder formulation to a substrate for a topcoat alone or in combination with a primer coat, and then heating the substrate, thereby forming a cured coating on at least the portion of the surface of the substrate. Such heating can be conducted in a single cure step to provide the cured coating including a cured topcoat alone or in combination with a cured primer coat.

Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.

The invention relates to the technical field of polyester resin, and discloses a preparation method and application of super-weather-resistant HAA curing type extinction polyester resin, neopentyl glycol, a triazine phenyl imide diol monomer, binary acid, an esterification catalyst, an onium salt curing accelerator and the like are subjected to a reaction, and the super-weather-resistant HAA curing type extinction polyester resin is obtained. The triazine phenyl imide diol monomer has a phenyl imide ring and triazine ring structure with heat resistance and structural stability, is beneficial to improving the high temperature resistance and mechanical strength of a polyester resin powder coating paint film, shows higher impact resistance, contains a dialkyl side chain, and can be used for preparing the polyester resin powder coating after being introduced into a polyester molecular chain. The modified polyester resin can generate steric hindrance and shielding effects, inhibit contact between water molecules and ester bonds in polyester molecular chains and reduce hydrolysis reaction of ester groups, so that the hydrolysis resistance of the polyester resin is improved. And the paint film has the advantages of good ultraviolet aging resistance, high weather resistance and high gloss retention rate.

The invention provides a preparation method and application of a fluorine-free sand streak agent. The preparation method of the fluorine-free sand streak agent comprises the following steps: S11, activating the surface of PMMA micro powder by utilizing a low-temperature plasma technology; s12, dispersing the activated PMMA micro powder in an organic solvent to obtain a reaction solution A; dispersing an acrylic monomer in an organic solvent to obtain a reaction solution B; dispersing an initiator in an organic solvent to obtain a reaction solution C; and S13, under the protection of nitrogen, introducing the reaction liquid A, the reaction liquid B and the reaction liquid C into a micro-channel reactor for graft copolymerization, cleaning and drying to obtain the PMMA micro powder with acrylic acid grafted on the surface.

The invention provides a polyester powder coating, a preparation method thereof and a polyester powder coating, and belongs to the technical field of coatings. According to the invention, a polyphenol compound modified graphene oxide composite material loaded with nano-zinc oxide is used as a functional filler, and graphene oxide (GO) is used as a main body of the composite material, so that the corrosion resistance of the coating can be enhanced; the GO is modified by using the polyphenol compound, so that the dispersity of the GO in the coating can be effectively improved, and the barrier effect of the GO is enhanced; moreover, the GO and the polyphenol compound can chemically react with the surface of the coating substrate to form chemical bonds, so that the bonding strength of the coating is enhanced, and the protection effect of the coating on the substrate is synergistically improved; according to the invention, the nano ZnO is loaded on the TGO, so that the small-size effect of the TGO can be exerted, small gaps in the coating can be effectively filled, and a certain physical shielding effect on a corrosive medium is achieved; in addition, the functional filler can enable the composite coatings to be combined more tightly, and the wear resistance of the coatings is improved.

The invention provides high-water-resistance high-toughness light-transmitting acrylic acid powder resin as well as a preparation method and application thereof, and belongs to the technical field of powder resin. The high-water-resistance high-toughness light-transmitting acrylic acid powder resin is prepared from the following preparation raw materials in parts by mass: 100 parts of an organic solvent; 20 to 50 parts of methyl (meth) acrylate; 5 to 20 parts of (methyl) butyl acrylate; 1 to 15 parts of tert-butyl (meth) acrylate; 10 to 50 parts of an epoxy group raw material; 1-20 parts of vinyl versatate; 0 to 30 parts of styrene; 1-10 parts of an acrylate monomer containing two double bonds; 0-5 parts of reactive silicon dioxide powder; 0-5 parts of a single-ended reactive silicon monomer; 0-5 parts of a double-end reactive silicon monomer; 0.1 to 2 parts of a silane coupling agent; 0.1 to 8 parts of an initiator; and 0.1-5 parts of a chain transfer agent. The light-transmitting acrylic powder resin with high water resistance and high toughness has excellent water resistance and toughness and good light transmittance.

The invention discloses a high-corrosion-resistance powder coating and a preparation method thereof, and belongs to the technical field of powder coatings. Through modification of the resin system, the ultraviolet absorbent modified epoxy resin and the weather-resistant polyester resin are compounded, so that the ultraviolet resistance and the weather resistance of the resin system are remarkably improved, and the corrosion resistance reduction caused by light aging is avoided; the flake graphene forms an excellent physical barrier to block corrosion medium permeation, then chemical passivation of zinc phosphate is combined to inhibit electrochemical corrosion, the synergistic effect is achieved, the corrosion resistance is synergistically enhanced from the physical and chemical angles, the path of the corrosion medium is further prolonged in combination with the laminated structure of the glass flakes, and the corrosion resistance is improved. And meanwhile, the filler A and the filler B can also play a role in enhancing the mechanical strength of the coating, so that the powder coating with high corrosion resistance can be obtained on the whole.

The application discloses a kind of ship super-long anticorrosion special nano powder coating, preparation method and application, belong to ship heavy anticorrosion material technical field.The preparation method of the ship super-long anticorrosion special nano powder coating is as follows: epoxy resin, graphene modified epoxy resin, core-shell structure ZnO@SiO2, modified 2,5-dimercapto-1,3,4-thiadiazole, borosilicate glass powder, flaky boron nitride, silane coupling agent modified silica, phenolic amine curing agent, 2-ethyl-4-methylimidazole, fumed silica, defoaming agent, ultraviolet absorber, high-temperature pigment are put into stirrer and stirred for 20-30min, then melt extrusion is carried out through double screw extruder, the extrusion temperature is 90-110 DEG C, grinds and sieves, and the ship super-long anticorrosion special nano powder coating is obtained.The coating prepared by the application has good anticorrosion performance and can be applied in the field of ship metal surface corrosion protection.

The invention relates to the technical field of polyester resin, and discloses outdoor hydrolysis-resistant polyester resin and a preparation method and application thereof.The outdoor hydrolysis-resistant polyester resin is prepared from, by weight, 30-38 parts of polyhydric alcohol, 48-50 parts of binary acid, 20.5-28.5 parts of acidolysis agent and 0.1-0.12 part of onium salt curing accelerator; according to the invention, 2-butyl-2-ethyl-1, 3-propylene glycol is used as polyol, and an alkyl side chain is introduced into polyester molecules to generate steric hindrance and shielding effects, so that water molecules are difficult to attack adjacent lipid bonds, and the hydrolysis resistance of the polyester resin is improved. 2, 2 '-[(2-hydroxy-3-phenoxy propyl) azadiyl] diethanol contains a benzene ring structure with thermal stability, and is crosslinked into a polyester molecular chain, so that the glass transition temperature of the polyester resin can be increased, the heat resistance can be improved, and the boiling water resistance of a resin coating can be improved.

The present invention discloses a fireproof insulating powder coating and a preparation method and application thereof, and belongs to the technical field of coatings. The fireproof insulating powder coating provided by the present invention comprises the following raw materials in parts by mass: 50 to 250 parts of silicone modified epoxy resin, 50 to 250 epoxy resin, 1 to 60 parts of curing agent, 1 to 20 parts of accelerator, 100 to 300 parts of filler, and 50 to 350 parts of auxiliary agent; the curing agent comprises a modified dicyandiamide curing agent; the modified dicyandiamide curing agent contains at least one of an aromatic group, an amino group or an epoxy group. The modified dicyandiamide curing agent of the present invention has excellent flame retardant and heat resistant properties, and has good curing reaction activity with epoxy resin, which is beneficial to improving the fireproof and heat resistant properties of the coating; at the same time, by compounding it with silicone modified epoxy resin and epoxy resin, it can work together to obtain a powder coating with excellent fireproof and insulating properties, which has a wide range of applications in battery protection.

The invention belongs to the technical field of thermal protection coatings, and particularly relates to an ultra-high-temperature thermal protection powder coating, an ultra-high-temperature thermal protection coating and a preparation method and application of the ultra-high-temperature thermal protection powder coating. The invention provides an ultrahigh-temperature thermal protection powder coating. The ultrahigh-temperature thermal protection powder coating is prepared from transition metal boride, silicon carbide and metal carbide. The mass ratio of the transition metal boride to the silicon carbide is 9: (1-3); the metal carbide accounts for 5-35% of the total mass of the transition metal boride, the silicon carbide and the metal carbide. According to the ultrahigh-temperature thermal protection powder coating provided by the invention, the metal carbide is added into the transition metal boride-silicon carbide composite coating, the carbide has ablation resistance, and an oxidation product formed after oxidation of the metal boride and / or the metal carbide has a synergistic anti-oxidation effect, so that a high-melting-point compound can be obtained; therefore, the anti-ablation effect is improved.

The present invention belongs to the technical field of coatings. More specifically, it relates to a high temperature resistant powder coating and a preparation method thereof. The product of the present invention comprises a polyester resin, a curing agent and a filler; the filler comprises modified graphene oxide; the modified graphene oxide comprises a graphene oxide matrix, and monodisperse hollow nanoparticles embedded in the interlayer of the graphene oxide matrix; the monodisperse hollow nanoparticles are selected from any one of monodisperse hollow nanoalumina, monodisperse hollow nanosilicon dioxide, monodisperse hollow nanomagnesia, monodisperse hollow nanozinc oxide, and monodisperse hollow nanotitanium dioxide; the D50 of the monodisperse hollow nanoparticles is 3-5nm; the particle size distribution range of the monodisperse hollow nanoparticles is 1-10nm; the sphericity of the monodisperse hollow nanoparticles is 9.0-9.2; the D50 of the graphene oxide matrix is ​​10-20μm.

A method for increasing friction on a traction surface of a deck plate or a lip plate of a dock leveler comprises pre-treating the traction surface of the deck plate or the lip plate of the dock leveler, the traction surface having a first lower coefficient of friction. The method further comprises applying a coating to the traction surface of the deck plate or the lip plate of the dock leveler. The coating is a thermosetting super durable polyester powder coating comprising friction-increasing particles, the friction-increasing particles being applied as a part of the powder coating to the dock leveler. The method further comprises curing the coating on the traction surface of the deck plate or the lip plate of the dock leveler to increase friction on the traction surface of the deck plate or the lip plate to a second higher coefficient of friction.

The invention provides a self-lubricating coating, a preparation method thereof and a method for forming a self-lubricating coating. The self-lubricating coating comprises the following components: 0.5-10% of microcapsules, 5-30% of modified regulation filler, 5-30% of conductive particles, 0.1-5% of a curing agent, 0.1-5% of an accelerant, 0.1-5% of benzoin, 0.1-5% of a flatting agent, 10-40% of titanium dioxide, 5-20% of fibers and the balance of matrix resin. A coating layer formed by electrostatic spraying of the self-lubricating paint has good antifriction wear resistance and fatigue resistance.

The invention discloses a special uniform curing powder coating for suction coating of the inner wall of a pipe fitting and a coating method of the special uniform curing powder coating, relates to the technical field of pipeline anti-corrosion coatings, and aims to solve the problem that the whole anti-corrosion performance of the pipe fitting does not reach the standard due to non-uniform coating and incomplete curing in the coating of the inner wall of the existing pipe fitting. The paint is composed of 400 g of one-step epoxy resin, 200 g of two-step epoxy resin, 80 g of a curing agent, 10 g of an auxiliary agent, 28 g of pigment, 3 g of an accelerant and 279 g of filler. The epoxy value of the one-step method epoxy resin is 0.4 to 0.5 eq / 100g; the epoxy value of the two-step method epoxy resin is 0.1 to 0.2 eq / 100g; the curing agent is an amine curing agent, and a microcapsule type latent accelerator accounting for 5-10% of the mass of the curing agent is dispersed in the curing agent. The powder coating has the advantages that the flowability and the leveling property of the powder coating are effectively adjusted, the sagging phenomenon is reduced, the curing time is shortened, and uniform curing is ensured.

The invention discloses a preparation method and application of a powder coating for a super-weather-resistant high-flexibility coiled material, and relates to the technical field of powder coatings. The invention discloses a preparation method of a powder coating for a super-weather-resistant high-flexibility coiled material, which comprises the following steps: mixing filler modified polyester resin, a curing agent, a defoaming agent, a flatting agent, an adhesion promoter and polytetrafluoroethylene wax according to the weight percentage of the raw materials to obtain the powder coating; the filler modified polyester resin disclosed by the invention is obtained by reacting aminated hydroxyl-terminated polyester, phosphorous acid and epoxy modified graphene oxide and then carboxylating by butanedioic anhydride; the filler modified polyester resin prepared by the invention is added into a coating as a base material of a powder coating, so that the coating is endowed with the characteristics of high weather resistance and high flexibility.

The invention relates to the technical field of coatings, and provides a corrosion-resistant flame-retardant powder coating and a preparation method thereof. The corrosion-resistant flame-retardant powder coating is prepared from the following raw materials in parts by weight: 45 to 55 parts of epoxy resin, 15 to 25 parts of polyimide resin, 10 to 12 parts of modified nano aluminum oxide, 6 to 8 parts of nano calcium silicate, 2 to 3 parts of graphene nanosheets, 8 to 10 parts of expanded graphite, 18 to 22 parts of polyamide curing agent, 2 to 4 parts of silane coupling agent, 1 to 1.4 parts of flatting agent and 0.5 to 1.5 parts of dispersing agent. 0.5 to 0.7 part of an antioxidant; and 0.5 to 1.5 parts of an imidazole accelerant. The core of the invention lies in that the corrosion resistance and flame retardancy of the coating are remarkably improved through accurate proportioning and a preparation process; meanwhile, the preparation method is simple in process, low in cost and environment-friendly, and large-scale production is easy to realize.

The invention discloses a polyester-polyurethane composite coating as well as a preparation method and application thereof, and relates to the technical field of coatings. The polyester-polyurethane composite coating comprises polyester resin, hydroxy acrylic resin, a polyester resin curing agent, an acrylic resin curing agent, a texturing agent and an auxiliary agent, and the mass of the hydroxy acrylic resin is 5-20% of the mass of the polyester resin. The polyester-polyurethane composite coating provided by the invention is used as base powder of a vacuum plating process, a formed coating has an obvious grain effect, can be matched with metal powder to present an excellent silver flashing effect after vacuum plating, also has good flexibility, corrosion resistance, hardness and other properties, is suitable for the vacuum plating process, and has a good application prospect. The coating can be further matched with a vacuum electroplating process provided by the invention to achieve a better effect, and is suitable for vacuum electroplating surface coating of the hub.

Methods and systems for coating metal substrates are provided. The methods and systems include sequential application of low flow and high flow powder coatings followed by a single heating step to provide a cured coating. The methods and systems include a marker that allows coating uniformity to be monitored and assessed during application. The described methods provide coatings with optimal surface smoothness and edge coverage.

The invention discloses an epoxy powder coating and a preparation method thereof, and belongs to the technical field of powder coating production, firstly, the epoxy powder coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 15-20 parts of modified phenolic resin, 12-15 parts of carboxyl-terminated polyester resin, 4-8 parts of nano cerium oxide coated mica, 1.5-2.0 parts of a flatting agent and 0.5-1.0 part of benzoin; the modified phenolic resin is prepared by carrying out addition on bisphenol A phenolic resin and DOPO, neutralizing and carrying out reduced pressure distillation; the carboxyl-terminated polyester resin is prepared by carrying out esterification polycondensation on terephthalic acid, isophthalic acid, neopentyl glycol and trimethylolpropane, and then modifying by trimellitic anhydride; the nano cerium oxide coated mica is prepared by coating white mica powder with cerium oxide precipitate, and then carrying out surface treatment and crushing.

The invention relates to the field of powder coatings, and particularly discloses a slow-release coated heat-curable powder coating catalyst composition, a powder coating and a preparation method of the powder coating. The slow-release coated heat-curable powder coating catalyst composition comprises: i) a component A, which is an inner core coated object and comprises at least one basic catalyst capable of promoting the ring-opening reaction of epoxy resin, and i) a component B, which is an outer core coated object and comprises at least one basic catalyst capable of promoting the ring-opening reaction of epoxy resin; ii) a component B, which is a coated shell comprising at least one crystalline solid unsaturated polyester resin or a semi-crystalline solid unsaturated polyester resin; the component C is a coating medium and comprises at least one alkane wax.The low-temperature powder coating can be cured at the ultralow temperature, the curing temperature is as low as 90-120 DEG C, the storage time of the low-temperature powder coating is effectively prolonged, and the requirement of a normal powder coating process is met.