CN112391106A - Antifouling self-cleaning sand coating for dustbin and preparation method thereof - Google Patents
Antifouling self-cleaning sand coating for dustbin and preparation method thereof Download PDFInfo
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- CN112391106A CN112391106A CN202011293462.9A CN202011293462A CN112391106A CN 112391106 A CN112391106 A CN 112391106A CN 202011293462 A CN202011293462 A CN 202011293462A CN 112391106 A CN112391106 A CN 112391106A
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- dustbin
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/08—Anti-corrosive paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The invention discloses an antifouling self-cleaning sand surface coating for a dustbin and a preparation method thereof, wherein the antifouling self-cleaning sand surface coating comprises the following components in parts by weight: 40-60 parts of water-based hydroxyl acrylic emulsion dispersoid, 3-6 parts of pigment, 0.5-1 part of dispersant, 0.2-0.5 part of defoamer, 0.3-0.5 part of flatting agent, 5-10 parts of sand flour, 2-3 parts of cosolvent, 2-3 parts of hydrophobing agent and 10-20 parts of organic silicon modified isocyanate. The invention realizes the long-acting antifouling self-cleaning effect on the surface of the dustbin, and can prevent corrosion and slow down aging after use.
Description
Technical Field
The invention belongs to the technical field of coatings, and particularly relates to an antifouling self-cleaning sand-surface coating for a dustbin and a preparation method thereof.
Background
The container loaded in the process of sorting, processing and transferring the garbage is a critical link, the container is damaged due to the corrosion of the garbage on the container, and the huge challenge of the garbage on the global environment is further aggravated.
Patent CN107603376A discloses a water-based paint and a preparation method thereof, the heavy-duty anticorrosive paint has excellent workability, proper viscosity, sagging performance, quick drying capability and mechanical performance of a paint film; excellent adhesive force, flexibility, impact resistance and good corrosion resistance, and solves the defects of early water resistance, long-term hydrolysis resistance, initial hardness, paint film drying performance and various paint films under the condition of a production line of a box factory. The amount of the film forming auxiliary agent is reduced, the VOC content is reduced, the film forming temperature is reduced under the condition of proper gloss and hardness, and the coating has good construction performance under the low-temperature condition in winter. Patent CN106893437A discloses a water-based wood wax paint and a preparation method thereof, wherein the water-based wood wax paint takes a cured product formed by crosslinking water-based hydroxy acrylic resin and siloxane as a paint film. The paint film has larger hardness and better wear resistance because of containing a silica chain segment, and has lower VOC because of taking water as a solvent. Patent CN106632947A discloses a method for synthesizing an isocyanate curing agent, the reaction temperature of the process does not rise violently, the speed is controllable, the synthesized polyisocyanate has low viscosity, and the polyisocyanate can be directly applied to the industry of two-component polyurethane coatings; silicon oxygen bonds and aspartate structures are introduced into the polyurethane, so that the adhesive force of a polyurethane coating film can be effectively improved, and the performances of high temperature resistance, aging resistance, salt mist resistance and the like are improved; has great market prospect and economic value.
However, the garbage can is complex in use environment, and the paint adopted by the existing garbage can is poor in antifouling and corrosion-resistant performance, easy to stain on the surface, incapable of being used outdoors for a long time, easy to rust and pulverize and the like; with the long ultraviolet irradiation time, the coating or the plastic is catalyzed and decomposed, so that aging phenomena such as pulverization, cracking and the like are caused, and the service life is greatly shortened.
Disclosure of Invention
The invention aims to solve the technical problems and provides an antifouling self-cleaning sand surface coating for a dustbin and a preparation method thereof, so that the long-acting antifouling, anticorrosion and self-cleaning effects of the coating are realized, the aging is slowed down after the coating is used, and the surface antifouling property is improved. In order to achieve the purpose, the technical scheme of the invention is as follows:
40-60 parts of water-based hydroxyl acrylic resin, 0.5-1 part of dispersant, 3-6 parts of pigment, 0.2-0.5 part of defoamer, 10-15 parts of water, 2-3 parts of cosolvent, 0.3-0.5 part of flatting agent, 2-3 parts of hydrophobing agent, 5-10 parts of sand flour and 10-20 parts of organic silicon modified isocyanate.
Specifically, the dispersant is high molecular weight polyurethane; the high molecular weight dispersant can provide larger steric hindrance, and can achieve long-term non-flooding and non-agglomeration precipitation.
Specifically, the defoaming agent is polyether siloxane copolymer containing gas phase silicon dioxide; the gas phase silicon dioxide can break the microbubbles when stored for a long time.
Specifically, the leveling agent is polyether siloxane copolymer.
Specifically, the cosolvent is one or a combination of diethylene glycol monobutyl ether, ethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether and diethylene glycol butyl ether acetate.
Specifically, the hydrophobic agent is a dispersion of a high molecular weight siloxane in water; it can form multidimensional organosilicon network structure with organosilicon in curing agent, so as to reduce surface tension greatly and raise surface hydrophobicity.
Specifically, the pigment comprises one or a combination of more than two of titanium dioxide, scarlet, carbon black, phthalocyanine green, phthalocyanine blue, organic medium yellow and organic orange.
Specifically, the sand flour is high molecular weight polypropylene wax. It features stable chemical nature, high resistance to ultraviolet, light, heat and acid. The product is easy to disperse and has excellent solvent resistance after surface treatment. Has good compatibility with resin, and can not generate floating, precipitation and whitening phenomena in the system. No silicone component is contained, and the recoat adhesion is not influenced. The functional assistant can reduce friction coefficient, improve excellent scratch and wear resistance surface performance, and endow the surface of the coating film with excellent hardness, smoothness and scratch resistance.
Specifically, the organosilicon modified isocyanate is polysiloxane modified water dispersible isocyanate, is hydrophilic polyisocyanate, is easy to emulsify, has good water dispersibility, and has the advantages of excellent water resistance, particularly excellent initial water resistance and salt spray resistance. The preparation method of the specific organosilicon modified isocyanate comprises the following steps: adding 100% of solid oily isocyanate curing agent into a reaction kettle, adding a sulfonate curing agent intermediate during stirring, slowly dripping KH560 organosilicon coupling agent after stirring for 10 minutes, adding dimethylcyclohexylamine, heating to 80 ℃ under the protection of nitrogen, reacting for 3 hours at constant temperature, cooling, and filtering out of the kettle to obtain the organosilicon modified isocyanate. Compared with the common water-based isocyanate curing agent on the market, the addition of the water-based emulsifier and the neutralizing agent can greatly reduce the water resistance of water resistance, and the organic silicon modified curing agent can greatly improve the water resistance and the weather resistance of the water-based polyurethane.
The preparation method of the specific antifouling self-cleaning sand surface coating for the dustbin comprises the following steps:
taking part of the water-based hydroxyl acrylic resin and the dispersing agent according to the proportion of the components in the formula, uniformly mixing in a dispersing machine, adding the pigment and the defoaming agent, uniformly mixing and stirring, and then grinding;
washing and filtering with water, adding the water-based hydroxyl acrylic resin, the flatting agent and the hydrophobic agent again, mixing and stirring uniformly, adding the sand flour in the final paint mixing stage, and adding the organic silicon modified isocyanate during spraying.
The pigment is ground beforehand to a particle diameter of not more than 10 μm.
Compared with the prior art, the antifouling self-cleaning sand surface coating for the dustbin and the preparation method thereof have the beneficial effects that:
the innovation points of the invention are that the sand powder is used for increasing the contact angle, reducing the surface tension of garbage and the coating, the hydrophobic and anti-fouling effect of the surface is further increased by the hydrophobic agent, and the water resistance and the weather resistance of the coating are improved by the organic silicon modified isocyanate. The antifouling self-cleaning sand surface coating for the dustbin has excellent water resistance, long-acting antifouling, anticorrosion and self-cleaning effects, and can slow down aging after being used. The organosilicon modified isocyanate and the water-based hydroxyl resin form a compact coating, so that the anti-adhesion capability is improved; after the coating is used, the coating is not easy to crack, does not change color, and is long-acting and durable.
Drawings
FIG. 1 is a microscopic enlarged effect picture of the hydrophobic coating sand surface of the antifouling self-cleaning sand surface coating for the dustbin.
FIG. 2 is a comparison graph of the water resistance test results of the antifouling self-cleaning sand-surface coating for the dustbin disclosed by the invention.
FIG. 3 is a comparison chart of the results of the stain resistance test of the antifouling self-cleaning sand-surface coating for garbage cans.
FIG. 4 is a comparison graph of the artificial aging resistance test results of the antifouling self-cleaning sand surface coating for the dustbin disclosed by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention are described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments.
Example 1:
20kg of water-based hydroxyl resin, 0.5kg of dispersing agent, 0.2kg of defoaming agent and 6kg of DPP red pigment are uniformly stirred and ground by grinding equipment, when the particle size is less than 10 micrometers, the cleaned water and the slurry of the upper half part are opened by using 20.8kg of purified water, 25kg of the rest water-based hydroxyl resin is added, cosolvent DPM1kg and DPNB1kg are added during stirring, 0.5kg of leveling agent and 2kg of hydrophobic agent are added after opening, finally 10kg of sand flour is added, 13kg of modified isocyanate curing agent is matched during use, the mixture is uniformly stirred and diluted by adding water to spray viscosity, and the antifouling self-cleaning sand paint for the dustbin is obtained.
The preparation method of the organic silicon modified isocyanate comprises the following steps: adding 100% of solid oily isocyanate curing agent into a reaction kettle, adding a sulfonate curing agent intermediate during stirring, slowly dripping KH560 organosilicon coupling agent after stirring for 10 minutes, adding dimethylcyclohexylamine, heating to 80 ℃ under the protection of nitrogen, reacting for 3 hours at constant temperature, cooling, and filtering out of the kettle to obtain the organosilicon modified isocyanate.
The preparation method of the antifouling self-cleaning sand surface coating for the dustbin comprises the following steps: uniformly mixing part of the water-based hydroxyl acrylic resin and the dispersing agent in a dispersing machine according to the proportion of the components in the formula, adding the pigment and the defoaming agent, uniformly mixing and stirring, and then grinding, wherein the pigment is ground in advance, and the diameter of ground particles is not more than 10 mu m; washing and filtering with water, adding the water-based hydroxyl acrylic resin, the flatting agent and the hydrophobic agent again, mixing and stirring uniformly, adding the sand flour in the final paint mixing stage, and adding the organic silicon modified isocyanate during spraying.
Example 2:
20kg of waterborne hydroxyl resin, 0.5kg of dispersing agent, 0.3kg of defoaming agent and 5kg of phthalocyanine green pigment are uniformly stirred, then the mixture is ground by grinding equipment, when the particle size is less than 10 micrometers, a cleaning machine is used for cleaning 15.2kg of purified water, after the cleaned water and the slurry of the upper half part are opened, 30kg of the rest waterborne hydroxyl resin is added, cosolvent DPM1kg and DPNB1.5kg are added during stirring, after the slurry is opened, 0.4kg of leveling agent and 2kg of hydrophobic agent are added, finally 10kg of flour is added, 14kg of modified isocyanate curing agent is matched during use, the mixture is uniformly stirred, and the mixture is diluted by adding water to spray viscosity for use.
The preparation method of the organic silicon modified isocyanate and the antifouling self-cleaning sand surface coating for the dustbin is the same as that of the example 1.
Example 3:
20kg of waterborne hydroxyl resin, 1kg of dispersing agent, 0.4kg of defoaming agent and 3kg of carbon black pigment are uniformly stirred and ground by grinding equipment, when the particle size is less than 10 micrometers, 8.9kg of pure water is used for cleaning a machine table, cleaned water and slurry of the upper half part are opened, 40kg of residual waterborne hydroxyl resin is added, 1.5kg of cosolvent diethylene glycol monobutyl ether and 1.5kg of DPNB1.5kg of cosolvent are added during stirring, 0.5kg of flatting agent and 1kg of hydrophobic agent are added after opening, and finally 5kg of flour is added, 17kg of modified isocyanate curing agent is matched during use, the mixture is uniformly stirred and diluted by adding water to spray viscosity for use.
The preparation method of the organic silicon modified isocyanate and the antifouling self-cleaning sand surface coating for the dustbin is the same as that of the example 1.
Control group:
20kg of water-based hydroxyl resin, 0.5kg of dispersing agent, 0.2kg of defoaming agent and 6kg of DPP red pigment, uniformly stirring, grinding by using grinding equipment, when the particle size is below 10 micrometers, cleaning the machine by using 32.8kg of purified water, opening the cleaned water and the slurry of the upper half part, adding 25kg of the rest water-based hydroxyl resin, adding cosolvent DPM1kg and DPNB1kg during stirring, adding 0.5kg of flatting agent after opening, proportioning 13kg of isocyanate curing agent during use, uniformly stirring, adding water to dilute to spray viscosity, and thus obtaining the antifouling self-cleaning sand surface coating for the dustbin.
The micro-scale amplification effect picture of the hydrophobic sand surface of the coating of the antifouling self-cleaning sand surface coating for the garbage can, which is prepared by the formula of the embodiment, is shown in figure 1.
The blank test was tested for its relevant properties with respect to the coatings prepared in examples 1-3.
The coatings prepared in examples 1 to 3 and the control were subjected to a performance test, and the results of the water resistance (unit: hour) test were shown in FIG. 2.
The coatings prepared in the control group and the examples 1 to 3 are subjected to performance tests, the stain resistance (0-10 grade) and stain resistance tests have no national standard and can be referred to, and the examples refer to a tile surface stain resistance method: the sprayed example plate was immersed in sewage, taken out after 2 hours, and evaluated according to the degree of cleanliness of the plate. The worst of the 0 th order and the best of the 10 th order. The results of the test are shown in FIG. 3.
The coatings prepared in the control and examples 1 to 3 were subjected to a performance test and an artificial aging resistance (unit: hour) test, as shown in FIG. 4.
When the embodiment is applied, the antifouling self-cleaning sand surface coating for the dustbin has excellent water resistance, antifouling performance and better bonding strength, a compact surface layer of the coating is formed, and the antifouling capacity is improved, and in the embodiment 2, the proportion reaches the optimal test; after the coating is used, the coating is not easy to crack, does not change color, and is long-acting and durable.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (10)
1. The antifouling self-cleaning sand surface coating for the dustbin is characterized by comprising the following components in parts by weight: 40-60 parts of water-based hydroxyl acrylic resin, 0.5-1 part of dispersant, 3-6 parts of pigment, 0.2-0.5 part of defoaming agent, 10-15 parts of water, 2-3 parts of cosolvent, 0.3-0.5 part of flatting agent, 2-3 parts of hydrophobing agent, 5-10 parts of sand flour and 10-20 parts of organic silicon modified isocyanate.
2. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the dispersant is high molecular weight polyurethane.
3. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the defoaming agent is polyether siloxane copolymer and contains gas phase silicon dioxide.
4. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the sand flour is high molecular weight polypropylene wax.
5. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the hydrophobic agent is a dispersion of a high molecular weight siloxane in water.
6. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the leveling agent is polyether siloxane copolymer; the cosolvent is one or a combination of two of diethylene glycol monobutyl ether, ethylene glycol butyl ether, dipropylene glycol methyl ether, dipropylene glycol butyl ether and diethylene glycol butyl ether acetate; the pigment comprises one or more of titanium dioxide, scarlet, carbon black, phthalocyanine green, phthalocyanine blue, organic medium yellow and organic orange.
7. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 1, wherein: the organosilicon modified isocyanate is polysiloxane modified water dispersible isocyanate.
8. The antifouling self-cleaning sand-surface paint for the dustbin as claimed in claim 7, wherein: the organic silicon modified isocyanate is obtained by the following preparation method: adding 100% of solid oily isocyanate curing agent into a reaction kettle, adding a sulfonate curing agent intermediate during stirring, slowly dripping KH560 organosilicon coupling agent after stirring for 10 minutes, adding dimethylcyclohexylamine, heating to 80 ℃ under the protection of nitrogen, reacting for 3 hours at constant temperature, cooling, and filtering out of the kettle to obtain the organosilicon modified isocyanate.
9. The method for preparing the antifouling self-cleaning sand-surface paint for the garbage can according to any one of claims 1 to 8, which is characterized in that: taking part of the water-based hydroxyl acrylic resin and the dispersing agent according to the proportion of the components in the formula, uniformly mixing in a dispersing machine, adding the pigment and the defoaming agent, uniformly mixing and stirring, and then grinding; washing and filtering with water, adding the water-based hydroxyl acrylic resin, the flatting agent and the hydrophobic agent again, mixing and stirring uniformly, adding the sand flour in the final paint mixing stage, and adding the organic silicon modified isocyanate during spraying.
10. The preparation method of the antifouling self-cleaning sand-surface coating for the dustbin as claimed in claim 9, wherein the method comprises the following steps: the pigment is ground beforehand to a particle diameter of not more than 10 μm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011293462.9A CN112391106A (en) | 2020-11-18 | 2020-11-18 | Antifouling self-cleaning sand coating for dustbin and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011293462.9A CN112391106A (en) | 2020-11-18 | 2020-11-18 | Antifouling self-cleaning sand coating for dustbin and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115960505A (en) * | 2022-12-28 | 2023-04-14 | 湖南航天三丰科工有限公司 | Deck anti-skid coating and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614683A (en) * | 1985-04-30 | 1986-09-30 | E. I. Du Pont De Nemours And Company | Chip resistant primer composition |
| CN109207041A (en) * | 2018-08-20 | 2019-01-15 | 安徽嘉智信诺化工股份有限公司 | A kind of aqueous anti-graffiti adhesion resistant paint |
| CN111116865A (en) * | 2020-01-06 | 2020-05-08 | 万华化学集团股份有限公司 | High-water-resistance and hydrophilic polyisocyanate curing agent and preparation method and application thereof |
-
2020
- 2020-11-18 CN CN202011293462.9A patent/CN112391106A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4614683A (en) * | 1985-04-30 | 1986-09-30 | E. I. Du Pont De Nemours And Company | Chip resistant primer composition |
| CN109207041A (en) * | 2018-08-20 | 2019-01-15 | 安徽嘉智信诺化工股份有限公司 | A kind of aqueous anti-graffiti adhesion resistant paint |
| CN111116865A (en) * | 2020-01-06 | 2020-05-08 | 万华化学集团股份有限公司 | High-water-resistance and hydrophilic polyisocyanate curing agent and preparation method and application thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115960505A (en) * | 2022-12-28 | 2023-04-14 | 湖南航天三丰科工有限公司 | Deck anti-skid coating and preparation method thereof |
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