445results about "Powdery paints" patented technology

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 application discloses a kind of high-performance coiled material powder coating and preparation method thereof, belong to powder coating technical field, the application is by the compounding of organosilicon modified epoxy resin and carboxyl-terminated polyester resin, after organosilicon modification, the segment of introduction-Si-O-Si in system has high flexibility, and synergistic effect with nano calcium carbonate, it is helpful to balance the adhesion and flexibility of coating, grafting modification graphene oxide, active chromium oxide is added again, can obviously improve the mechanical strength of coating;After then, phosphite group is grafted onto graphene oxide, and is applied in the present powder coating system, can form three-dimensional network structure in system, chemical bond effect, not only can improve its crosslinking stability in system, and the sheet structure of graphene oxide, also can play certain barrier property, can also give coating longer weather resistance, and active chromium oxide synergistic effect is further improved, and the weather resistance and corrosion resistance of coating.

The invention provides a bio-based low-temperature curing powder coating and a preparation method thereof, and belongs to the technical field of powder coatings, and the bio-based low-temperature curing powder coating specifically comprises the following components in parts by weight: 65-75 parts of bio-based resin, 5-6 parts of triglycidyl isocyanurate, 0.05-0.15 part of tetrabutylammonium bromide, 8-12 parts of air glass beads, 4-6 parts of mica and 0.4-0.6 part of ethylene bis stearamide. 0.7 to 1.3 parts of flatting agent, 0.2 to 0.5 part of benzoin, 0.3 to 0.7 part of amide wax and 6 to 8 parts of pigment. The curing temperature of the bio-based low-temperature curing powder coating is 100-120 DEG C, and the bio-based low-temperature curing powder coating has the advantage of low curing temperature, can be suitable for surface coating of plastic devices, has the advantages of salt mist resistance, impact resistance and the like, and can effectively solve the problems of existing powder coatings.

The invention provides epoxy resin for halogen-free flame-retardant self-leveling powder coating and a preparation method of the epoxy resin, and belongs to the technical field of powder coating. The flame retardant is mainly prepared from anhydrous piperazine, bisphenol A diglycidyl ether, trihydroxymethyl phosphorus oxide, triethyl phosphite, epoxy chloropropane, sodium hydroxide, N-methyl iminodiacetic acid, ethylene glycol diglycidyl ether and other main raw materials through polymerization. The prepared epoxy resin and 2-phenylimidazoline are subjected to low-temperature curing (135 DEG C / 20 min) on the premise that an additional flatting agent does not need to be used, the flexibility of a coating film is good, the impact resistance grade is high, the impact performance reaches the condition that no cracking phenomenon exists in the front and back 60cm, the leveling grade reaches the grade 7 or above, the gloss is high and reaches 95% or above, the oxygen index reaches 34% or above, and the halogen-free flame retardant performance is excellent.

The invention discloses a flame-retardant corrosion-resistant coating and a preparation method thereof, and relates to the technical field of fluorocarbon resin powder coatings. The flame-retardant corrosion-resistant coating comprises the following raw materials in parts by weight: 15-25 parts of fluorocarbon resin, 40-50 parts of epoxy resin, 3-5 parts of a curing agent, 5-7 parts of a reinforcing agent, 4-6 parts of a corrosion inhibitor, 6-8 parts of filler, 1-2 parts of a flatting agent and 0.5-1 part of benzoin. The preparation method comprises the following steps: reacting phosphonitrilic chloride trimer with p-hydroxybenzaldehyde to generate an intermediate 1, reacting the intermediate 1 with p-aminobenzoic acid to generate an intermediate 2, and reacting the intermediate 2 with 2-heptyl ethylene oxide to generate the reinforcing agent. The flame-retardant corrosion-resistant coating prepared by the invention has excellent mechanical properties, corrosion resistance, aging resistance and flame retardance.

The invention discloses a boiling-resistant highlight black powder coating, and relates to the field of powder coatings. The boiling-resistant highlight black powder coating comprises the following raw materials in parts by weight: 30-45 parts of amide modified polyester resin; 25 to 35 parts of epoxy resin; 0.8 to 1.5 parts of a leveling agent; 0.3 to 0.6 part of a degassing agent; 0.8 to 1.2 parts of a brightening agent; 0.4 to 0.9 part of micro powder polyethylene wax; 1-2 parts of carbon black; 1-3 parts of a curing agent; 10-16 parts of stearic acid modified mica powder; and 10-16 parts of hollow glass beads. The boiling resistance and weather resistance of the thermosetting powder coating are improved, and the highlight black powder coating with good boiling resistance is prepared.

The invention relates to the technical field of coating preparation, and provides a super-hydrophobic oleophobic epoxy anticorrosive wear-resistant powder coating and a preparation method thereof. According to the coating, phenolic epoxy resin and bisphenol A epoxy resin are used as matrix resin, phenolic hydroxyl resin is used as a curing agent, super-hydrophobic / oleophobic carbon nanotubes are used as a modifier, ethylene-tetrafluoroethylene copolymer and polyamide resin are used as flexibilizers, super-hydrophobic / oleophobic nano silicon dioxide powder and super-hydrophobic hollow glass beads are used as fillers, and the super-hydrophobic / oleophobic nano silicon dioxide powder and the super-hydrophobic hollow glass beads are used as fillers. The super-hydrophobic and oleophobic epoxy anti-corrosion wear-resistant powder coating is prepared by taking an inorganic pigment as a coloring agent through the steps of material preparation, premixing, melt extrusion, tabletting, cooling, crushing and sieving under the cooperation of various functional assistants. The powder coating is subjected to electrostatic spraying (40-70 KV), the coating film thickness is about 350 microns, and the powder coating is cured into a film after being subjected to hydrophobic / oleophobic min at 180 DEG C / 5 min or 230 DEG C / 1.5 under the baking condition of 180 DEG C / 5 min. The contact angles of oil drops and water drops can reach 160 degrees and 161 degrees respectively, and the rolling angles are 2 degrees and 1 degree respectively.

The invention relates to the technical field of coatings, and discloses a heat-insulating powder coating as well as a preparation method and application thereof. The heat insulation powder coating is prepared from the following preparation raw materials in parts by mass: 160 to 220 parts of organic silicon modified polyester resin, 10 to 30 parts of modified hollow glass beads, 30 to 70 parts of modified sericite powder, 40 to 60 parts of titanium dioxide, 3 to 5 parts of hydrophobic SiO2 aerogel and 10 to 20 parts of curing agent, wherein the organic silicon modified polyester resin is prepared by melting and blending weather-proof polyester resin and organic silicon resin according to the mass ratio of (4-9): 1; the temperature of melt blending is 90 to 130 DEG C. According to the coating, the excellent heat insulation performance that the solar reflectance is larger than or equal to 0.87 and the heat conductivity coefficient is smaller than or equal to 0.075 W / m.K is achieved, the excellent mechanical strength, adhesive force, impact resistance and long-acting weather resistance are achieved, and heat loads on the surfaces of building outer walls, industrial furnace shells, household appliances and the like can be remarkably reduced.

The invention provides halogen-free flame-retardant liquid epoxy resin, solid epoxy resin for powder coating and a preparation method of the solid epoxy resin, and belongs to the technical field of powder coating. The liquid epoxy resin disclosed by the invention is prepared by polymerizing 2, 4-diamino-6-phenyl-1, 3, 5-triazine, formaldehyde, triethyl phosphite, epoxy chloropropane, sodium hydroxide, DMF (Dimethyl Formamide) and the like. The contents of halogen-free flame-retardant elements nitrogen and phosphorus in the product are high, a solid epoxy resin product obtained by carrying out chain extension on liquid epoxy resin serving as a synthetic monomer of solid epoxy resin of the powder coating and bisphenol F is good in flame retardance, the oxygen index reaches 37% or above, and the flame retardance is high. A coating film obtained after the powder coating and an accelerated dicyandiamide curing agent are subjected to low-temperature rapid curing (150 DEG C / 10 min) is high in gloss and leveling grade and good in impact resistance, hardness and the like, and the application requirements of the powder coating are met.

The application relates to the technical field of C09D5 / 03, in particular to a high-transmittance acrylic powder resin and a preparation method thereof, raw materials for preparing the acrylic powder resin by weight percentage at least include: 80-100 parts of soft monomers, 400-600 parts of hard monomers, 0-10 parts of carboxyl functional monomers, 200-400 parts of ester functional monomers, 20-100 parts of hydroxyl functional monomers, 10-30 parts of initiators, 5-20 parts of chain transfer agents, 800-1200 parts of solvents and 1-10 parts of nano additives; the nano additives are added, and the synthesis process of the acrylic resin is optimized, so that the prepared acrylic powder resin has high transmittance and good weather resistance, and can meet the actual use requirements in the fields of automobile hubs and photovoltaics.

The invention belongs to the technical field of coatings, and particularly relates to polyester resin for a powder coating as well as a preparation method and application of the polyester resin. The polyester resin for the powder coating is prepared from the following raw materials: polyol, polyacid, polyamide acid oligomer and an acidifying agent. The polyamide acid oligomer is introduced in the synthesis of the polyester resin, an amide structure in the polyamide acid oligomer can improve the electrification property of polyester, the improvement of the electrification property is beneficial to improving the powdering rate of powder, and meanwhile, an N-H bond in the amide structure has relatively strong polarity and hydrogen-bond interaction; the wettability of the base material is obviously improved through the synergistic effect of the two. Therefore, the polyamide acid oligomer is introduced into the polyester resin and is combined with other components, so that the corner coverage rate of the powder coating can be obviously increased.

The invention relates to the technical field of powder coatings, and provides a preparation method and equipment of a metal-texture colored powder coating, and the method comprises the following steps: carrying out dispersion treatment on flaky aluminum powder through an alcohol solvent, and then adding a silicon source for hydrolysis reaction, so that the surface of the flaky aluminum powder is coated with a silicon dioxide layer; dispersing the flaky aluminum powder coated with the silicon dioxide layer into water, and adding composite metal salt for co-deposition treatment, so that the surface of the flaky aluminum powder is coated with a composite metal oxide layer; and dispersing the flaky aluminum powder coated with the silicon dioxide layer and the composite metal oxide layer into an organic solvent for polymerization reaction, so that the surface of the composite metal oxide layer is coated to form a polymer resin layer, and the modified aluminum pigment is obtained. The composite metal salt is added for co-deposition treatment, so that the surface of the flaky aluminum powder is coated with the composite metal oxide layer, and the color transition effect can be realized and the color richness can be improved by adjusting the proportional gradient change of various metal salts in the composite metal salt.

The invention belongs to the technical field of coatings, and particularly relates to textured high-toughness polyester resin as well as a preparation method and application thereof. The textured high-toughness polyester resin is prepared from the following raw materials: polyol, polyacid, carboxyl silicone oil, a dynamic cross-linking agent, an acidolysis agent and carboxyl-terminated nitrile rubber. The dynamic cross-linking agent contains at least two carboxyl groups and one disulfide bond. Through the synergistic effect of the dynamic cross-linking agent, the carboxyl silicone oil and the carboxyl-terminated nitrile rubber, the problem that a traditional texture type powder coating is insufficient in toughness is solved, and the impact resistance, the flexibility, the low-temperature mechanical property and the self-repairing capacity of a coating are remarkably improved while clear textures are kept.

This invention relates to the field of powder coating technology, and proposes a high-abrasion-resistant polyester powder coating and its preparation method. The high-abrasion-resistant polyester powder coating comprises the following components in parts by weight: 50-80 parts polyester resin, 20-50 parts epoxy-cured polyester resin, 3-6 parts curing agent, 8-12 parts filler, 3-4 parts leveling agent, and 0.5-1 part defoamer; the acid value of the polyester resin is 20-55 mgKOH / g; and the acid value of the epoxy-cured polyester resin is 30-38 mgKOH / g. This technical solution solves the problem of poor abrasion resistance and adhesion of existing polyester powder coatings.

This invention provides a polyester resin for high-leveling HAA (high-efficiency autoclave) curing powder coatings with anti-pinhole properties and its preparation method, belonging to the field of polyester resin preparation technology. This application constructs a polyester skeleton with aromatic hard segments and a certain degree of flexibility by combining a diacid component with polyol monomers. Under the premise of segmental control of acid value, 2-butyl-2-ethyl-1,3-propanediol and trimethylolpropane are introduced, so that the resin retains sufficient carboxyl end groups and has a segmental environment conducive to dynamic transesterification. Zinc acetylacetonate and hindered phenolic phosphite are added to form a Zn-P synergistic system, which inhibits excessive catalysis and oxidative discoloration during synthesis and extrusion, and provides moderate transesterification catalytic activity during the curing stage. Resin particles are obtained by melt spreading and rapid cooling to fix the structure and additive distribution, providing support for HAA powder coatings to achieve thick-coat anti-pinhole properties and color stability while maintaining good leveling.

The invention discloses a low-energy-consumption polyurethane powder coating and a preparation method thereof, and belongs to the technical field of polyurethane powder coatings. Comprising the following raw materials in parts by weight: 60-70 parts of polyester polyol, 10-20 parts of a closed HDI tripolymer, 5-10 parts of a flame retardant aid, 1-2 parts of a flatting agent, 2-3 parts of an anti-yellowing agent, 0.5-1.5 parts of a dispersing agent, 0.4-0.8 part of a degassing agent and 8-12 parts of superfine barium sulfate. The low-hydroxyl-value polyester polyol and the closed HDI tripolymer are matched for use, so that the temperature and time required in the curing process are greatly reduced, and the energy consumption is reduced; the self-made flame-retardant additive can effectively improve the flame-retardant property of the coating, reduce the fire risk and prolong the service life; in conclusion, the prepared coating achieves the dual purposes of energy conservation, environmental protection, safety and flame retardance, and has important application value in the field of polyurethane powder coatings.

The invention provides an organic silicon spraying powder processing technology, and belongs to the technical field of organic silicon spraying powder manufacturing, and the organic silicon spraying powder processing technology comprises the following steps: S1, mixing organic silicon resin, pigments and fillers, a necessary leveling agent, a defoaming agent and other assistants according to a certain proportion, and heating to make the mixture reach the use performance index; s2, the glossiness of the powder is not lower than 90 degrees, and after the powder is soaked in a sulfuric acid diluted solution for 750 hours, the powder is still not adhered to a filter bag after being re-dried for 5 hours at 220 DEG C; the organic silicon spraying powder obtained through processing has excellent acid resistance and alkali resistance, after being soaked in a sulfuric acid diluted solution with the pH value being 2 and a sodium hydroxide diluted solution with the pH value being 12 for 750 hours, the organic silicon spraying powder does not stick to a filter bag even after being re-dried for 5 hours at the high temperature of 280 DEG C, a coating formed by the powder can be kept stable for a long time in an extreme corrosive environment, and the service life of the coating is prolonged. Corrosion of the equipment surface is effectively prevented, so that the service life of the equipment is prolonged.

A modified metal oxide particle sol, when applied as a coating onto a substrate, is capable of having transparency, a high particle refractive index and good coat resistivity. The modified metal oxide particle sol is composed of modified metal oxide particles (iii) in which stannic oxide particles (i) having an average primary particle size of 4 to 50 nm serve as cores and are coated with metal oxide particles (ii) of at least one metal oxide selected from the group consisting of antimony oxide, stannic oxide and silicon oxide and having an average primary particle size of 1 to 10 nm, which modified metal oxide particles (iii) are dispersed in an organic solvent. The average primary particle size of the core particles (i) and the average primary particle size of the coating particles (ii) satisfy the relationshipsize of core particles(i)≥size of coating particles(ii),the ratio (total weight of metal oxides other than stannic oxide) / (weight of stannic oxide) is from 0.005 to 1.0, and the sol includes an amine (a) having a water solubility of 0.1 g / L or more and an amine (b) having a water solubility of less than 0.1 g / L.

The invention provides a hydrophilic oleophobic fluorinated ethylene propylene resin preparation device which is characterized in that a stirrer (4) is positioned in the middle of a polymerization reaction kettle (1), a heating device is arranged at the bottom of the polymerization reaction kettle (1), the polymerization reaction kettle (1) is connected with a vacuumizing device (6), and the polymerization reaction kettle (1) is communicated with a dryer (9) through a condensation barrel (7), a demulsification device and a rinsing bath (8); the dryer (9) is connected with a powder vibrating screen (10); and the powder vibrating screen (10) is communicated with a finished product storage tank (11). According to the method disclosed by the invention, a functional monomer introduced with a hydrophilic group is added into a polymerization reaction kettle to react, tetrafluoroethylene and hexafluoropropylene are added to participate in copolymerization, and finally the fluororesin powder coating is prepared by the method and the device. The fluorinated ethylene propylene resin powder coating prepared by the method and the device has hydrophilic and oleophobic characteristics, the preparation process is simple and convenient, and the production cost is low.

The invention relates to the technical field of powder coatings, in particular to a preparation method and application of a high and low temperature cycle resistant powder coating, and aims to solve the problems of insufficient high and low temperature cycle resistance and interface bonding force of the existing powder coating. The temperature-resistant polyester resin is used as a framework, the heat resistance of the material is improved by introducing a rigid structural unit, meanwhile, the proportion of flexible chain segments is controlled to ensure low-temperature toughness, the epoxy resin is added to improve the crosslinking density and chemical resistance of a coating, and functional groups such as carboxyl provide anchoring points for reaction with a curing agent and a toughening agent; epoxy groups and hydroxymethyl on the surface of the toughening agent can chemically react with carboxyl and hydroxyl of resin and the curing agent to form a strong chemical bonding interface, temperature resistance and flexibility are improved by organic silicon, weather resistance and hydrophobicity are improved by fluorine-containing chain segments, and wear resistance and thermal stability are improved by silicon dioxide hybridization; the added inorganic filler reduces the thermal expansion coefficient of the material.

A copolymer and its use as coating whereby the copolymer comprises a first monomer of the general formula (I)and a second monomer of the general formula (II)wherein Y is selected from the group consisting of —CH2Z3, —NHCOR5, —CONHR6, —OCOR7, —COOR8 and —OR9, and where Z1, Z2, and Z3 are selected from the group consisting of fluoro, chloro, bromo, iodo, hydroxyl, toluene-4-sulfonyloxy and methylsulfonyloxy. R1, R2, R3 and R4 are independently from each other selected from the group consisting of linear or branched C1-C30 alkyl, a linear or branched C2-C30 alkenyl, a linear or branched C2-C30 alkynyl, sulfo, nitro, amino, hydroxy, oligo(C2 to C4-alkylene glycol), —NHCOR5, —CONHR6, —OCOR7, —COOR8 and —OR. R5, R6, R7, R8 and R9 are selected from the group consisting of a linear or branched C1-C30 alkyl, a linear or branched C2-C30 alkenyl and a linear or branched C2-C30 alkynyl.

The invention belongs to the technical field of powder coatings, and particularly relates to an ultraviolet curing coal series kaolin powder coating and a preparation method thereof. In order to make full use of titanium resources and achieve excellent coating performance, coal gangue calcined kaolin and titanium dioxide in a mass ratio of 1: 1 are used and are directly mixed under the action of mechanical shearing force; and then mixing with unsaturated polyester resin, a photoinitiator, a flatting agent, a degassing agent and a defoaming agent to prepare the ultraviolet curing powder coating which has the advantages of high hardness, good impact resistance and excellent chemical resistance.

The application relates to the field of paint, in particular to a high-weatherability metal powder paint and a preparation method thereof; the high-weatherability metal powder paint comprises the following components in parts by weight: 80-100 parts of resin, 5-9 parts of a curing agent, 30-50 parts of a filler, 1-5 parts of an additive, 10-20 parts of pigment, 1-5 parts of a silane coupling agent, 20-30 parts of nitrogen-phosphorus doped graphene, and the nitrogen-phosphorus doped graphene is adopted, so that the adhesion of the metal powder coating and the substrate and the corrosion resistance of the metal powder coating are effectively improved, and the problem of uneven metal powder in the coating process of the metal powder paint can be avoided; the nitrogen-phosphorus doped graphene is coated on the pigment through a specific preparation process, the contact of the pigment with other materials and air is reduced, and then the discoloration of the pigment caused by long-term exposure to air is reduced; the microwave heating is adopted to coat the pigment and the substrate powder in motion, and the method has the advantages of high efficiency and high quality compared with the existing thermal bonding.

The invention discloses bio-based unsaturated polyester resin for a high-thermal-conductivity powder coating, a preparation method of the bio-based unsaturated polyester resin, a powder coating composition and a high-thermal-conductivity coating. The bio-based unsaturated polyester resin for the high-thermal-conductivity powder coating is characterized by comprising the following components: A) unsaturated binary acid / anhydride; b) saturated binary acid / anhydride; c) a diol comprising from 30 to 70 mol% of isosorbide, from 20 to 50 mol% of bio-based 1, 3-propanediol and / or 1, 4-butanediol, and from 0 to 20 mol% of an auxiliary diol selected from one or more of ethylene glycol, neopentyl glycol, hydrogenated bisphenol A; d) an esterification catalyst; and a polymerization inhibitor. According to the bio-based unsaturated polyester resin for the high-thermal-conductivity powder coating, through unconventional bio-based monomers and a special molecular structure design, on the premise of ensuring proper Tg and processability, consideration of high bio-based content and high thermal conductivity is realized.

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

Powder coating compositions are provided comprising: a) zinc metal in an amount of at least 20 percent by weight and less than 50 percent by weight; b) a resinous binder component in an amount from 35 percent by weight to 77 percent by weight, based on total weight of the powder coating composition; and c) micronized rubber particles in an amount from 3 percent by weight to 15 percent by weight, based on total weight of the powder coating composition. The micronized rubber particles demonstrate a particle size smaller than ASTM E11 Test Sieve Size 200 mesh (74 microns). Also provided are coated articles, in particular, coated vehicle suspension springs, comprising: a) a substrate; and b) a coating layer formed from the powder coating composition described above applied to at least a portion of the substrate. The substrate comprises steel in the coated vehicle suspension spring.

The invention provides polyester resin for a transparent powder coating with excellent adhesive force and leveling as well as a preparation method and application of the polyester resin, and belongs to the technical field of powder coatings. The polyester resin is mainly prepared by taking diethylenetriamine pentaacetic acid, triethyl chlorosilane, 1, 6-hexanediol, N, N-diisopropylethanolamine, 2, 2-dimethyl propanol, neopentyl glycol, 3, 3-tetramethylene glutaric anhydride, 1, 4-cyclohexanedimethanol and the like as raw materials through polymerization. The obtained polyester resin chain segment has many branched structures, the number of amino groups and ester groups in the branched structures is large, the softening point is low, the low-temperature melting fluidity is good, the transparency is high, the adhesive force with a base material is good, then high-functionality diethylenetriamine pentaacetic acid is adopted for carboxyl end capping, the terminal carboxyl functionality is high, the curing activity is high, and the curing effect is good. After being cured with E-12 epoxy resin at low temperature, a coating film is good in leveling property and high in transparency, and can be used in the fields of thermosensitive base materials which are not easy to adhere, such as thin glass materials and the like.

The invention relates to an efficient and long-life inorganic dry powder coating with a self-humidifying function and a preparation method thereof, and belongs to the technical field of inorganic coatings. The inorganic dry powder coating comprises the following components in parts by weight: 30-40% of potassium silicate, 10% of expanded perlite, 10-25% of high-activity sepiolite nanofiber, 10% of calcined shell powder, 18-28% of quartz sand and 2-3% of an auxiliary agent. The preparation method comprises the following steps: firstly, treating a sepiolite raw material by virtue of a synergistic process of ultrasonic beam splitting and citric acid activation, so as to obtain high-activity sepiolite nanofibers which are fully dissociated, have nano hierarchical pore channels and are rich in hydrophilic groups; and compounding the high-activity sepiolite nanofiber with calcined shell powder, expanded perlite, quartz sand and potassium silicate to synergistically construct an inorganic coating system with optimized microstructure and efficient moisture absorption / liberation performance. The coating is simple in preparation process and environment-friendly, has excellent mechanical properties and self-humidity-regulating performance, still keeps an efficient humidity-regulating effect in a long-term service environment, and has outstanding long-acting stability.

The invention discloses a solvent-free superfine high-thermal-conductivity insulating coating and a preparation method and application thereof, and the coating comprises 30-50% wt of a resin film-forming composition, 10-20% wt of an epoxy reactive diluent, 0.3-1.3% wt of a wetting leveling agent, 2-5% wt of a dispersant, 0.5-1% wt of an antifoaming agent, 16-20% wt of a curing agent, and 40-70% wt of an inorganic filler. Wherein the inorganic filler is prepared from 3 to 10 weight percent of diamond powder, 10 to 30 weight percent of spherical aluminum oxide powder, 15 to 25 weight percent of aluminum hydroxide powder and 5 to 15 weight percent of titanium dioxide. The coating obtained by adopting the formula disclosed by the invention is fine and smooth, has the characteristics of high heat conductivity and high insulation, reduces heat radiation, and also increases the heat conduction function of the coating, so that the requirements of the vehicle-mounted power battery are well met, and a solid foundation is laid for improving the safety of the vehicle-mounted power battery.