1761results about "Polyester coatings" patented technology

The invention discloses a pure bio-based PHA aqueous dispersion as well as a preparation method and application thereof, and belongs to the technical field of pure bio-based polymer aqueous dispersion. According to the dispersion, polyhydroxyalkanoate is used as a unique film forming matter, Pickering solid particles and a natural surfactant are adopted for synergistic stabilization, and a bio-based plasticizer can be selected. The emulsion or slurry with the polyhydroxyalkanoate content of 40-85wt% and the particle size of 0.2-3m is prepared through a melting high-pressure homogenization method, a low-temperature wet grinding method or a solvent replacement method. The coating does not contain petrochemical polymer protective colloid and perfluorinated and polyfluoroalkyl substances, and the bio-based content is greater than or equal to 99%. Due to the excellent stability, rheological property and film-forming property of the modified starch, the modified starch becomes an ideal basic material for constructing a multi-layer programmable controlled release and degradation functional coating system, can be used in the fields of paper-based barrier coatings, adhesives, advanced crop seed coats and the like, realizes excellent barrier, bonding and controlled release properties, meets the industrial compost and repulping property standards, and has wide application prospects. The method has green, environment-friendly and industrial potential.

The invention provides a PHA dispersion emulsion as well as a preparation method and application thereof, and belongs to the field of high polymer materials. The invention aims to solve the technical problem that the prior art cannot simultaneously meet the requirements of the polyhydroxyalkanoate water dispersion system on extremely low temperature natural film-forming property, excellent comprehensive performance after film formation and long-term storage stability. The method is characterized in that a polyhydroxyalkanoate polymer with specific molecular weight and polydispersity index range, a coalescing agent 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate with a specific chemical structure and a specific type of aliphatic polyisocyanate cross-linking agent compatible with water dispersion are strictly limited and combined. Through the synergistic effect generated by the unique ternary combination, the minimum film forming temperature of the prepared emulsion can be reduced to 6-10 DEG C, a film can be naturally formed without hot pressing, and the formed film has excellent mechanical property, water resistance and adhesive force and has excellent storage stability of at least one year.

A wood preservative composition comprising 4,5-dichloro-2-octylisothiazol-3(2H)-one, a method of treating a wood substrate therewith, and a wood product produced therefrom are provided. The wood preservative composition comprises at least 0.5% by weight of DCOI based on the total weight of the composition and a retaining additive comprising a solvent-borne polymeric resin, N a wax, or a combination thereof. A weight ratio of the DCOI to the retaining additive in the composition is in a range of 1:5 to 5:1.

The invention discloses a PHA-acrylic acid structural unit water-based dispersion based on interface engineering regulation and control, a preparation method thereof and application of a paper-based barrier coating, and belongs to the technical field of high polymer materials, interface engineering and water-based coatings. The stable interface layer is constructed in situ between the crystalline PHA and the acrylic resin through the amphiphilic polymer, so that the problems of poor compatibility and film forming defects of a bio-based material are effectively solved. The dispersion can realize excellent waterproof, oil-proof and gas barrier effects by only needing a relatively low coating weight, and the material consumption is remarkably reduced. The unique gradient structure of the coating has excellent mechanical adhesive force and efficient re-pulping and recycling characteristics, and the technical defect that a traditional barrier coating is difficult to recycle is overcome. And an ideal solution with high performance and high safety is provided for green packaging.

The invention relates to the technical field of food packaging materials, in particular to a cerium dioxide nano-enzyme modified antibacterial coating and application of the cerium dioxide nano-enzyme modified antibacterial coating in food packaging. The biomimetic mineralization layer comprises the following components in percentage by weight: 35-45% of a green base material, 8-12% of dopamine modified yttrium-doped cerium dioxide nano-enzyme, 4-6% of a composite antibacterial agent, 3-4% of a natural cross-linking agent, 2-3% of a degradable plasticizer, 1-2% of a biomimetic mineralization layer precursor and the balance of deionized water, the green base material is a blend of a chitosan-polyethylene glycol graft and polylactic acid; the doping amount of Y3 in the nano enzyme is 3-4at%. The antibacterial agent is excellent and lasting in antibacterial effect, has no migration risk of the antibacterial agent, and can guarantee food safety; a green base material and a degradable plasticizer are adopted, so that natural degradation is realized, and environmental pollution is avoided; the mechanical property is good, the aging resistance is realized, and the oxygen barrier property is strong; the food packaging box is suitable for various foods, effectively prolongs the shelf life, and meets the requirement of green packaging.

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 invention relates to the technical field of electroplating primers, and particularly discloses an anti-burst electroplating primer and a preparation method thereof. The invention relates to an anti-burst electroplating primer which comprises the following components in parts by weight: 8-12 parts of bifunctional polyurethane acrylate; 20 to 25 parts of trifunctional polyester acrylate; 10 to 15 parts of modified epoxy acrylic resin; 13 to 20 parts of a UV monomer; 4-6 parts of a photoinitiator; 0.1 to 0.2 part of a leveling agent; and 33-45 parts of a solvent. The anti-burst electroplating primer disclosed by the invention can be used for the surface of a plastic base material such as a PET material, has the advantages of no burst in a free falling body with the height of 80cm and adhesive force of more than level 1, endows a subsequent electroplated layer with good adhesive force and reduces the burst problem of a product under pressure.

The application belongs to the technical field of paint, and particularly relates to a high-weather-resistance acrylic paint and a preparation method thereof. The high-weather-resistance acrylic paint comprises the following components and weight fractions: 25-40 parts of water-based acrylic resin, 10-20 parts of functional resin, 10-25 parts of modified filler of shea butter oil, 0.1-0.5 parts of defoaming agent, and 20-40 parts of water; the functional resin is water-based polyurethane modified alkyd resin; and the filler at least comprises pyrophyllite powder and nano titanium dioxide. The acrylic paint provided by the application has excellent weather resistance, adhesion, wear resistance and good thermal stability.

The invention discloses a photovoltaics light-transfer coating liquid, which comprises diphenyl anthracene and derivatives thereof, SiO2 silica sol and a solvent, the low-temperature light conversion coating liquid is coated on the glass substrate, the hydrophobic layer is continuously coated on the glass substrate, and the hydrophobic matrix resin is utilized to prevent the component from being eroded by water when the component is used outdoors, so that on one hand, the light conversion substance can be protected from being eroded or decomposed by water, and on the other hand, the glass surface is endowed with a self-cleaning function.

The present invention relates to a composition comprising an aqueous dispersion of biodegradable polymer particles, a method of preparing the composition, and a method of preparing a coated substrate comprising the composition. The composition is useful as a coating applied to a substrate, particularly a paper substrate. The coated paper is useful as a single layered barrier coated paper or paperboard.

The invention belongs to the technical field of photovoltaic materials, and provides a photovoltaic profile and a preparation method and application thereof. The preparation method comprises the following steps: carrying out surface conditioning and phosphorization on a steel substrate (carbon steel or recycled steel or low alloy steel), carrying out electrophoretic deposition by using epoxy thermosetting electrophoretic primer, and pre-drying; the outer surface of a workpiece is coated with fluorocarbon finish paint (the fluorocarbon finish paint comprises the following raw materials in specific content: polyester resin with a certain viscosity hydroxyl value, fluorocarbon resin with a certain viscosity hydroxyl value, pigment filler, an organic solvent, a wetting leveling agent, a dispersing agent, a defoaming agent, an adhesion promoter and an aliphatic isocyanate curing agent), and curing is performed. And an electrophoretic primer layer with the thickness of 15-25 microns and a fluorocarbon finish layer with the thickness of 20-30 microns are formed on the outer surface of the steel substrate through curing. According to the photovoltaic profile, the electrophoretic primer layer and the fluorocarbon finish paint layer are formed on the low-cost steel substrate through one-time curing, the process can be simplified, the cost can be reduced, the paint layer is thin, and the photovoltaic profile further has long-term excellent adhesive force, aging resistance, corrosion resistance, weather resistance, gloss retention and the like.

The invention relates to the technical field of high polymer materials, and discloses self-repairing bio-based polyester resin for a matte powder coating as well as a preparation method and application of the self-repairing bio-based polyester resin. The bio-based polyester resin is prepared from the following preparation raw materials in percentage by mole: 20 mol% to 40 mol% of bio-based flexible diol, 20 mol% to 35 mol% of bio-based furandicarboxylic acid, 10 mol% to 25 mol% of isosorbide, 5 mol% to 25 mol% of itaconic acid, 1 mol% to 15 mol% of long-chain bio-based aliphatic dibasic acid, 1 mol% to 10 mol% of bio-based citric acid, 0.1 mol% to 2.0 mol% of zinc acetylacetonate, 0.1 mol% to 1.0 mol% of a microcapsule corrosion inhibitor, 0.1 mol% to 1.0 mol% of an esterification catalyst and 0.1 mol% to 1.5 mol% of an antioxidant. The bio-based polyester resin does not contain petroleum-based monomers and is high in biochar content.

A release film comprising: a laminated film in which a first coating layer B1 containing a polyester resin containing an inorganic pigment, a void-containing layer A containing voids therein, and a second coating layer B2 containing a polyester resin containing an inorganic pigment are laminated in this order; and a release layer C on at least one side of the laminated film, wherein the void-containing layer A is made of a composition containing a polyester resin, a polyolefin resin, and a silicone resin, and has an apparent density of 0.80 g / cm3 or more and 1.20 g / cm3 or less.

A biodegradable composition is disclosed. The biodegradable composition includes (i) a biodegradable polymer and (ii) a cellulose ester. Films that include or are formed from the biodegradable composition, as well as articles that include a substrate and a layer of the biodegradable composition on a surface thereof, are also described.

The invention discloses a UV varnish applied to a PVC edge band and a preparation process thereof, and relates to the technical field of paints.The UV varnish comprises, by mass, 15-35% of hydroxyl polyester acrylate, 5-10% of a curing agent, 1-5% of a curing agent, 1-5% of a curing agent, 1-5% of a curing agent, and the balance of water. 15-35% of aliphatic polyurethane resin with 3-4 functional groups; 15-25% of an active monomer; 0.2-0.5% of a wetting dispersant; 0.5-1% of a dispersant; 0.2%-0.5% of a defoaming agent; 0.1 to 0.2 percent of a flatting agent; 0.5%-0.8% of a fluorocarbon modified leveling agent; 3.5 to 5% of a photoinitiator; 0.5%-2.2% of a functional auxiliary agent; 5-15% of a matting agent; and 0.5-1% of nano aluminum oxide. According to the UV varnish, the flexibility reaches grade 1, the adhesive force reaches grade 0, the yellowing resistance E * is 1.0-1.5 (grade 1), and after a cold and hot cycle test, a paint film is free of cracks, bubbles, gloss loss and the like.

The present disclosure relates to a powder coating composition for preparing a dielectric coating, comprising: a) an epoxy-functional polymer; b) a polycarboxylic acid-functional polyester polymer capable of reacting with the epoxy-functional polymer; and c) optionally a colorant; wherein (i) the coating composition further comprises an isocyanate-functional crosslinker capable of reacting with a hydroxyl-functional reaction product obtained from the epoxy-functional polymer and the polycarboxylic acid-functional polyester polymer; and / or (ii) a film formed from the powder coating composition has a dielectric strength greater than 2.5 kV at a dry film thickness of less than 8 mils; and the powder coating composition is substantially free of polycarboxylic acid-functional (meth)acrylate polymers.

The present invention provides an aqueous polyhydroxyalkanoate coating, a preparation method therefor, and a use thereof. The preparation method for the aqueous polyhydroxyalkanoate coating comprises: subjecting a polyhydroxyalkanoate fermentation solution to cell wall breaking and extraction, to obtain an aqueous polyhydroxyalkanoate dispersion, and then mixing the aqueous polyhydroxyalkanoate dispersion with an additive to obtain the aqueous polyhydroxyalkanoate coating, a dispersant and talcum powder being added during the cell disruption process. By means of using talcum powder to replace a portion of a dispersant as a protective additive for PHA particles, the present invention can prevent the aggregation of PHA particles at high purity, and the resulting aqueous PHA coating exhibits good coating water resistance.

The invention discloses a full bio-based PHA (polyhydroxyalkanoate) liquid bioplastic emulsion and a preparation method thereof. The emulsion takes polyhydroxyalkanoate (PHA) as a matrix, alkyl polyglycoside, fermented glycolipid and a bio-based nonionic surfactant are compounded with pullulan, alginate or micro-nano cellulose to serve as a stable system, and plasticizers such as acetyl tributyl citrate and citric acid, phytic acid or tannic acid are added to serve as compacting agents. The solid content of the emulsion is 35-58%, the volume average particle size D50 is 0.12-0.90 [mu] m, the absolute value of Zeta potential is not less than 30 mV, and the content of volatile organic compounds (VOC) is not higher than 50 g / L; fluorine-containing organic matters are not artificially added, and the total organic fluorine is less than or equal to 100ppm. The overall bio-based carbon content of all organic components in the formula is not lower than 95% according to mass weighting calculation. The invention also provides application of the emulsion in the fields of paper barrier coatings, heat-sealing adhesives and non-woven fabric finishing.

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 utility model discloses a wear-resistant reflective zipper, which relates to the technical field of reflective zippers, and comprises a base cloth, the base cloth comprises a lining body cloth and a reflective part, the lining body cloth and the reflective part are interlaced and woven with each other, the reflective part consists of a plurality of reflective fibers, and the reflective fibers further comprise matrix fibers and bonding layers coated on the outer surfaces of the matrix fibers. The reflective effect is achieved through the high refractive index of the polymer type reflective glass beads, and the tin film layer arranged at the bottom of the polymer type reflective glass beads can further reflect external light and diffused light generated by the polymer type reflective glass beads, so that the reflective effect of the zipper is further improved; the polymer type reflective glass beads are tightly combined with the reflective layer through strong electrostatic attraction force, the reinforcing layer and the wear-resistant layer which are arranged in a matched mode have a good wear-resistant effect, the service life of the reflective zipper can be further prolonged, the falling speed of the polymer type reflective glass beads is greatly delayed, and the service life of the zipper is prolonged. And the reflective zipper can have a good reflective effect for a long time.

The invention belongs to the technical field of coatings, and discloses a preparation method and application of a low-temperature fast-curing coiled material powder coating, and the preparation method comprises the following steps: S1, adding raw materials of the low-temperature fast-curing coiled material powder coating into a high-speed mixer, and mixing for 5-8 minutes at the rotating speed of 1200-1600r / min to ensure that the components are uniformly dispersed; s2, adding the mixture into a double-screw extruder for melt extrusion, wherein the temperature of the double-screw extruder is 80-90 DEG C in a first area, 100-110 DEG C in a second area, 120-130 DEG C in a third area and 110-120 DEG C in a fourth area, and the rotating speed is 200-250 r / min; s3, tabletting and cooling to 40 DEG C or below, after coarse crushing, adopting an ACM pulverizer and a grading screen of 80-120 meshes to obtain the low-temperature fast-curing coiled material powder coating, low-temperature curing and fast film forming are achieved through component cooperation, the process adaptability is high, meanwhile, functional filler modified sericite and modified nanometer aluminum oxide are added, and the low-temperature fast-curing coiled material powder coating is prepared. The two synergistically enhance the corrosion resistance, mechanical strength and environmental adaptability of the powder coating paint film.

The invention relates to the technical field of anti-corrosion treatment, and provides anti-corrosion molding powder and a radiator anti-corrosion treatment technology.The anti-corrosion molding powder is prepared by taking polyethylene glycol terephthalate as a matrix and cooperating with a TGIC curing agent, phosphoric acid activated bamboo charcoal nanofibers, graphene modified zinc oxide, a lanthanum nitrate and cerous nitrate compound, a silane coupling agent and a functional additive; a composite resin system with a compact nano-structure is prepared through high-speed ball milling pre-activation and a twin-screw gradient extrusion process. The treatment process of the radiator comprises the steps of forming the ceramic substrate layer through micro-arc oxidation, performing dynamic temperature control impregnation with acrylic acid water-based paint, spraying anti-corrosion molding powder, performing microwave infrared gradient curing, and constructing a metal substrate-ceramic layer-organic coating multi-stage protection system. The permeability resistance of the coating is remarkably improved, a continuous and compact composite protection structure is formed, the problems of interface stripping, medium permeation and poor environmental adaptability of a traditional coating are solved, and the coating is suitable for the long-acting anti-corrosion requirement of the radiator under the high-corrosion working condition.

Disclosed are biodegradable polyesters prepared from bio sourced materials and methods for their production. The polyesters comprise a plurality of adducts of two dicarboxylates or anhydrides with a compound having at least two fused ring heterocycles wherein each heterocycle contains a heteroatom of oxygen or sulfur and at least one hydroxyl group pendant from each ring. wherein the plurality of adducts are linked by a plurality of residues of one or more diols of alkylene diols or polyoxyalkylene diols and a plurality of one or more aliphatic diols containing a pendant carboxylate group wherein ester groups are formed by reaction of the hydroxyl groups of the fused ring compounds and the diols with the carboxylate groups of the dicarboxylates and the composition contains pendant carboxylate groups.

The present invention provides: a powder which is capable of forming an electromagnetic wave absorption layer that has electromagnetic wave absorption characteristics in a wider frequency region than ever before and is suppressed in performance variation, and which can be electrostatically adhered or heat fixed to a support body; and an electromagnetic wave absorber which comprises a melt molded body of the powder as an electromagnetic wave absorption layer. The present invention provides: a powder which is capable of forming an electromagnetic wave absorption layer that has electromagnetic wave absorption characteristics in a wider frequency region than ever before and is suppressed in performance variation, and which can be electrostatically adhered or heat fixed to a support body; and an electromagnetic wave absorber which comprises a melt molded body of the powder as an electromagnetic wave absorption layer.

The invention relates to organic silicon modified bifunctional polyester resin and a weather-resistant powder coating composition prepared from the organic silicon modified bifunctional polyester resin. Specifically, the silicone-modified bifunctional polyester resin has a molecular backbone derived from a polyol component, a polyacid component, a capping component, and a silicone component, in which the silicone-modified bifunctional polyester resin has an acid value in the range of 20 to 40 mg KOH / g, a hydroxyl value in the range of 5 to 15 mg KOH / g, and a hydroxyl value in the range of 5 to 15 mg KOH / g. The organic silicon component is organic silicon resin with a structure as shown in a formula (I). The weather-resistant powder coating composition disclosed by the invention has excellent weather resistance, such as QUVB of more than 500 hours, and also has excellent leveling property and high glossiness. (RSiO3 / 2) a (R2SiO2 / 2) b (R3SiO1 / 2) c (SiO4 / 2) d (XO1 / 2) e (HO1 / 2) g (I)

The invention discloses a high-performance coiled material powder coating and a preparation method thereof, and belongs to the technical field of powder paints.The high-performance coiled material powder coating has the advantages that organosilicon modified epoxy resin and carboxyl-terminated polyester resin are compounded, a-Si-O-Si-chain segment is introduced into a system after organosilicon modification, the flexibility is high, and the high-performance coiled material powder coating has a synergistic effect with nano calcium carbonate; the adhesive force and the flexibility of the coating are balanced, and the mechanical strength of the coating can be obviously improved by adding the grafted modified graphene oxide and the active chromic oxide; then, phosphite ester groups are grafted to the graphene oxide, the graphene oxide is applied to a powder coating system, a three-dimensional network structure and chemical bonding can be formed in the system, the crosslinking stability of the graphene oxide in the system can be improved, and a certain barrier property can be achieved due to the flaky structure of the graphene oxide; and the coating is endowed with long-acting weather resistance, and the weather resistance and the corrosion resistance of the coating are further improved through the synergistic effect with the active chromic oxide.

The present application relates to a kind of powder coating hydroxyalkylamide matting curing agent and its preparation method, the matting curing agent using including citric acid, 2-methyl-1,3-propanediol, dimethylbenzene, anhydrous methanol, N-methyl monoethanolamine, catalyst, nanometer titanium dioxide is reacted to obtain raw materials.In first, citric acid and 2-methyl-1,3-propanediol are grafted to carry out reaction, then the remaining four carboxyl groups of grafting are methyl esterification reaction, obtain methyl esterification product, then with N-methyl monoethanolamine acylation reaction obtains hydroxyalkylamide curing agent;Add nanometer titanium dioxide, fully mix and process to obtain the matting curing agent.The curing agent product functionality is higher, the hardness of coating film after curing is higher, and the boiling water resistance is excellent;And the coating film after curing has obvious matting effect, coating film gloss is basically reached 50-70%, and the decorative property is excellent.

The invention discloses a cement-enhanced super-hydrophobic self-adaptive temperature control coating which comprises a thermochromic bottom layer and a radiation refrigeration surface layer, a primer adopted by the thermochromic coating is prepared from the following components in parts by weight: 3 to 6.6 parts of composite resin matrix, 0.4 to 1.2 parts of filler, 11 to 15 parts of thermochromic powder and 10 to 15 parts of organic solvent; and finish paint adopted by the thermochromic coating is prepared from the following components in parts by weight: 50 to 55 parts of SiO2 dispersion liquid, 2 to 9 parts of white cement slurry, 5 to 8 parts of hydrophobic modifier, 6 to 10 parts of low-surface-energy substance and 7 to 11 parts of migration-anchoring dual-function additive. The coating system disclosed by the invention can realize efficient cooling in a high-temperature environment, can keep thermal insulation performance in a low-temperature environment, has mechanical stability and self-cleaning performance required by long-term outdoor application, and is wide in applicability.

The invention provides a color-coated steel plate with heat-insulating, antibacterial and super-hydrophobic functions, which comprises a metal substrate, and a chemical conversion layer and a primer layer which are sequentially arranged on at least one surface of the metal substrate, and a composite functional finish paint layer is arranged on the primer layer; the composite functional finish paint layer comprises film-forming resin, a near-infrared reflection composite pigment, a dual-mode antibacterial agent and fluorinated nano silicon dioxide; the finishing coat layer in the color-coated steel plate has heat-insulating and antibacterial capabilities and a super-hydrophobic self-cleaning function at the same time; the invention also provides a preparation method of the color-coated steel plate, which comprises the following steps: carrying out surface pretreatment on the metal substrate to form the chemical conversion layer; coating the chemical conversion layer with a primer and carrying out first curing to form a primer layer; the primer layer is coated with finish paint coating, then multi-temperature-zone gradient curing is conducted, and a composite functional finish paint layer is formed; according to the preparation method, a multi-temperature-zone gradient curing process is adopted, the temperature of different curing stages is controlled, and a stable functional structure is constructed.

The invention relates to a high-strength self-cleaning infrared radiation heat dissipation water-based coating as well as a preparation method and application thereof. The coating comprises the following components in parts by weight: 40-55 parts of water, 5-10 parts of a water-based binder, not more than 20 parts of a high-emissivity filler and not more than 5 parts of a fluorocarbon surfactant, the water-based binder is selected from at least one of styrene-acrylic emulsion, water-based polyurethane, polyvinyl alcohol, water-based acrylic resin, water-based epoxy resin and water-based alkyd resin, and the fluorocarbon surfactant is selected from at least one of water-based acrylic emulsion, water-based polyurethane, polyvinyl alcohol, water-based acrylic resin, water-based epoxy resin and water-based alkyd resin. The high-emissivity filler is selected from at least one of BaSO4, ZnO, Al2O3, SiC, BN (boron nitride) and SiO2, and the fluorocarbon surfactant is selected from at least one of FS-65, FS-34, ST-110, FC-4432 and FS-3100. According to the invention, ZnO, BaSO4 and the like are introduced as composite fillers, so that the coating is endowed with high strength, self-cleaning property and full-wave-band high emissivity, various properties such as wear resistance, adhesion, acid and alkali resistance, organic solvent corrosion resistance, aging resistance, high and low temperature resistance and the like of the coating are improved, and the coating can meet the requirements of various different heat dissipation scenes when being applied to electronic components.