Rust-inhibiting reflective thermal barrier coating containing tung oil-coated flaky zinc powder and method of making same

Abstract

The application discloses a rusted anti-rust reflective heat-insulating coating containing tung oil coated flaky zinc powder and belongs to the technical field of zinc powder modification. According to mass fractions, the rusted anti-rust reflective heat-insulating coating comprises the following components: 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin water-based dispersion, 0.5-1 part of polymerization catalyst and 5-10 parts of cosolvent. The rusted anti-rust reflective heat-insulating coating containing tung oil coated flaky zinc powder can reduce the reaction between zinc powder and water in the water-based emulsion, improve the storage stability of the zinc powder, and make the zinc powder not lose the cathode protection and shielding protection due to the early reaction. The preparation method is simple, raw materials are easy to obtain, and the cost is low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of zinc powder modification, and particularly relates to a rusted anti-rust reflective heat insulation coating containing flaky zinc powder coated with tung oil and a preparation method thereof. BACKGROUND

[0002] Metal powders include aluminum powder, copper powder, iron powder, nickel powder, zinc powder, tungsten powder, molybdenum powder, indium-based alloy powder, etc. Its main applications are as follows: (1) 3D printing: metal powder can be used for 3D printing, which can realize the manufacturing of complex parts and improve the manufacturing efficiency and product quality. (2) Metal ceramic products: metal powder can be mixed with ceramic powder to make metal ceramic products, which have good wear resistance, corrosion resistance and high temperature resistance. (3) Electronic components: metal powder can be made into electronic components such as capacitors, inductors and resistors, which can improve the stability and reliability of electronic components. (4) Metal coating: metal powder can be made into metal coating, which can be coated on the surface of automobiles, household appliances, buildings, etc., to improve the appearance and durability of the products. (5) Metal composite materials: metal powder can be mixed with other materials to make metal composite materials, which have good strength, toughness and durability.

[0003] Surface modification of metal powder is to endow the surface of metal powder with new physical and chemical properties according to the purpose of use, improve its performance, and meet the increasing demand of modern process technology development.

[0004] Currently, there are two useful technologies that can protect metal powder from corrosion and keep them stable in the medium: adsorption of corrosion inhibitors on the surface of particles and encapsulation of particles by modifiers. The principle of the former modification of metal powder is to reduce the active sites on the surface of metal powder. As the name implies, some substances are deposited on the surface of metal powder in some way to block its active sites and reduce its reactivity, thereby inhibiting its corrosion; the principle of the latter treatment of metal powder is essentially a method of isolating the medium, that is, a layer of substance is coated on the surface of the metal to encapsulate the metal powder inside the layer of substance, which blocks the corrosion medium and reduces the reaction between the corrosion medium and the metal powder particles, thereby inhibiting the occurrence of corrosion reaction.

[0005] The adsorption of corrosion inhibitors on the surface of particles may result in uneven adsorption of corrosion inhibitors on the surface of particles due to the unevenness and complexity of the surface of particles. For most organic corrosion inhibitors and inorganic corrosion inhibitors, the adsorption on the surface of metal will be weakened or the formed precipitate film will be larger and have poor adhesion with the increase of temperature, resulting in the disadvantage of reduced corrosion inhibition effect.

[0006] The dispersibility of the modifier on the surface of the particles is an important factor affecting the encapsulation effect. If the dispersibility of the modifier is poor, it may lead to uneven encapsulation on the surface of the particles, affecting the encapsulation effect. The stability of the modifier is another factor affecting the encapsulation effect. If the stability of the modifier is poor, it may lead to changes in the encapsulation on the surface of the particles during storage or use, affecting the encapsulation effect.

[0007] Tung oil is used in coatings for wood, typically as a film-forming substance. It has good penetration, after being applied to the surface of an object, it can quickly dry to form a tough, waterproof, smooth, bright coating, which protects the wood. Its microscopic mechanism in the coating is mainly achieved through its special molecular structure and chemical composition. Specifically, the oily components in tung oil can penetrate into the tiny gaps on the surface of the wood and form a strong chemical bond with the surface, forming a dense protective film. This film has excellent water resistance, moisture resistance, rust resistance, mildew resistance and other properties, which can effectively isolate the influence of the external environment on the substrate, thereby playing a protective role for the substrate. At the same time, the molecular structure of tung oil also makes it have good adhesion and flexibility, which can adapt to the deformation of the substrate, maintain the integrity and protective performance of the coating.

[0008] At present, there are some similar implementation schemes for zinc powder modification technology. For example, a common implementation scheme is to coat zinc powder with silane coupling agent. Silane coupling agent has a special structure, one end of the molecular structure represents a functional group that can react with organic polymers, and the other end represents a hydrolytic group that can connect to the surface of inorganic materials such as metal oxides and silica. Silane can connect inorganic materials and organic polymers, thereby imparting the desired function and achieving the purpose of modification. However, the problem is that the modified zinc powder cannot be well stored in water, and after long-term storage, the zinc powder is prone to contact with water to produce hydrogen gas. The activity of zinc powder is strong, and it is easy to react with water. When zinc powder comes into contact with water, zinc atoms lose electrons to form zinc ions, which combine with hydrogen ions in water to form zinc hydroxide. At the same time, zinc atoms also combine with hydrogen ions in water to form hydrogen gas, which is gradually released during the reaction. This poses a safety hazard and cannot well meet the needs of water-based coatings. These problems limit the popularization and application range of the technology in practical applications.

[0009] Therefore, it is necessary to solve the problem of the reaction of modified zinc powder with water in water-based emulsion. SUMMARY

[0010] In view of the above-mentioned deficiencies existing at present, the present application provides a rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder and a preparation method thereof, the present application uses the hydrophobic and polymerizable characteristics of tung oil to fully mix the zinc powder and the tung oil, so that the tung oil can be cross-linked and polymerized into a solidified film with hydrophobic characteristics on the surface of the zinc powder, thereby fully protecting the zinc powder and making the zinc powder hydrophobic to prevent the zinc powder from reacting with water molecules in the water-based emulsion, thereby solving the problem of reaction of the modified zinc powder with water in the water-based emulsion.

[0011] In order to achieve the above-mentioned purpose, the present application provides a rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder, according to mass fraction, the formula of the rusted anti-rust reflective thermal insulation coating includes: 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin water-based dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent.

[0012] According to one aspect of the present application, the flaky zinc powder is 800 mesh flaky zinc powder; and the aluminum silver paste is flaky aluminum powder coated with sodium stearate.

[0013] According to one aspect of the present application, the lubricant is talc.

[0014] According to one aspect of the present application, the adhesion promoter is an organosilane adhesion promoter; and the cosolvent is an alcohol ether solvent.

[0015] According to one aspect of the present application, the polymerization catalyst is cobalt isooctoate.

[0016] According to one aspect of the present application, the cosolvent includes one or both of diethylene glycol butyl ether and dipropylene glycol butyl ether.

[0017] According to one aspect of the present application, the high molecular epoxy resin water-based dispersion is a water-based single-component epoxy emulsion.

[0018] According to one aspect of the present application, the organosilane adhesion promoter includes 3-chloropropyltrimethoxysilane.

[0019] Based on the same inventive concept, the present application also provides a preparation method of the above-mentioned rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder, including the following steps:

[0020] Step 1: reacting the natural tung oil at 60-70 DEG C and a rotation speed of 200-300 r / min for 15-30 min to obtain pre-polymerized tung oil;

[0021] Step 2: At room temperature, under the speed of 800-1000r / min, flaky zinc powder is added step by step under stirring;

[0022] Step 3: At the speed of 800-1000r / min, lubricant is added to step 2, and dispersed for 5-8min until uniform;

[0023] Step 4: At the speed of 800-1000r / min, polymerization catalyst is added to step 3, and stirred until the viscosity is too high to stir;

[0024] Step 5: At the speed of 800-1000r / min, adhesion promoter, aluminum paste, high molecular epoxy resin aqueous dispersion, and cosolvent are added to step 4 in sequence and stirred uniformly to obtain a rust-preventive and reflective heat-insulating coating containing tung oil-coated flaky zinc powder.

[0025] The natural tung oil used in the present application is a drying vegetable oil. The oil dries quickly, has a light specific gravity, and is glossy, and also has the effects of waterproofing, corrosion prevention, and rust prevention. When the tung oil is fully exposed to air, it will form a hard waterproof coating through autoxidative polymerization. Compared with other vegetable oils, tung oil acid has the most active chemical properties among all plant oil fatty acids due to the conjugated double bond structure, and is more easily chemically modified to obtain the performance of ideal materials. The tung oil paint film has the advantages of fast drying time, strong water resistance, and high hardness, making tung oil an important raw material for large-scale manufacturing of inks, coatings, and adhesives.

[0026] The 800-mesh flaky zinc powder used in the present application has a greater specific gravity than flaky aluminum powder. When the film forming time is long enough, the zinc powder will sink faster than aluminum powder in the resin due to gravity.

[0027] The aluminum paste used in the present application is flaky aluminum powder coated with sodium stearate. The particle shape of the flaky aluminum powder is flat and similar to a sheet or foil. This shape allows the flaky aluminum powder to have a large surface area and a high specific surface area, which greatly extends the invasion path of corrosive media after the film is formed.

[0028] The lubricant used in the present application is talc, which is a loose white powder mainly composed of magnesium carbonate. The flowability and consistency of the coating can be controlled by adjusting the amount of talc added, making it easy to apply and achieve the desired effect. After the tung oil is stirred and mixed with zinc powder, the viscosity is large and the zinc powder is prone to adhesion. The addition of talc prevents adhesion between zinc powders.

[0029] The adhesion promoter used in the present application is an organic silane adhesion promoter, which contains 3-chloropropyl trimethoxysilane because the chemical composition of organic silane and polymer must be well matched to achieve optimal performance. Therefore, for thermoplastic molecules, only those containing chlorosilane functional groups can be matched and adhere by diffusing through the organic silane network in the interfacial region of the interface. The role of the adhesion promoter is to enhance the bonding force between the coating and the metal substrate, so that the coating is more firmly attached to the metal surface. It can improve the adhesion and adhesion of the coating, and has strong adhesion on the rusty metal surface, reducing the peeling and falling off of the coating.

[0030] The high molecular weight epoxy resin aqueous dispersion used in the present application has a solid content of between 50%, a minimum film forming temperature of between 35-60℃, a wide applicability, and an excellent compatibility. When used in the present application, it has good compatibility with resins, pigments and fillers, functional powders, etc., and the cured coating has excellent adhesion on cold zinc coating.

[0031] The co-solvent used in the present application is an alcohol ether solvent, which has a slow evaporation rate and is beneficial to curing and film formation when used in the present application.

[0032] The polymerization catalyst used in the present application is cobalt isooctanoate, which is widely used in the industrial field of coatings. In the manufacture of coatings, it can be used as a catalyst to improve the drying speed and curing degree, participate in the polymerization reaction, promote the synthesis of high molecular compounds, and increase the hardness and durability of the coating.

[0033] Mechanism of the present application: In the present application, zinc powder and tung oil are added together in a certain proportion, and pre-polymerized tung oil is obtained by stirring and heating. The heating can promote the progress of self-crosslinking, and the increase of temperature can accelerate the reaction rate, because at higher temperature, the molecular kinetic energy increases, the collision frequency between molecules increases, thereby increasing the rate of free radical generation and the growth rate of polymer chains. Tung oil is in full contact with air, and tung oil crosslinking and curing generates a dense cured film. The mechanism of tung oil crosslinking and curing to generate a cured film is mainly achieved through oxidative polymerization reaction. Specifically, the unsaturated fatty acids and oleic acid components in tung oil react with oxygen in the air to initiate free radical chain reaction, generating polymer molecules. These polymer molecules crosslink and entangle with each other, and finally form a hard, continuous, high crosslinking density cured film. The cured film has hydrophobic properties. After the tung oil is fully stirred with the zinc powder, it is coated on the surface of the zinc powder, and the molecular structure diagram is as shown in Figure 1 The zinc powder does not produce hydrogen gas, and the role of the zinc powder in the coating can be better guaranteed.

[0034] The natural tung oil crosslinking and curing reaction is as follows:

[0035]

[0036] At the beginning of the reaction, the α-H of the allyl site on the tung oil fatty acid chain is easily removed by hydrogen abstraction reaction to form a free radical;

[0037]

[0038] The free radical then reacts with oxygen;

[0039]

[0040] The free radicals in the system initiate polymerization reactions, causing the molecular weight of the system to increase continuously, thereby achieving curing.

[0041] Advantages of the present application:

[0042] (1) Compared with silane coupling agents, the reactant tung oil used in the present application is a pure biomass material, and the raw material is easy to obtain, which is natural and green and does not pollute the environment;

[0043] (2) Compared with silane coupling agent coated zinc powder, the tung oil coated zinc powder of the present application is more hydrophobic. Because the cured film formed by tung oil contains long hydrocarbon chains and carboxylic acid groups. The hydrocarbon chain is mainly composed of carbon and hydrogen atoms, and these carbon-hydrogen bonds are non-polar, resulting in the hydrophobicity of the hydrocarbon part. Water molecules are polar, and they tend to interact with groups with similar polarity. However, the hydrocarbon chains in the cured film have weak interactions with water molecules due to their non-polar nature, thus exhibiting hydrophobicity. In addition, although the carboxylic acid group in the cured film contains oxygen atoms, the overall polarity of the group is not enough to make the entire cured film hydrophilic. The interaction between the oxygen atoms in the carboxylic acid group and the hydrocarbon chains further enhances the hydrophobicity of the cured film. The cured film formed by crosslinking of tung oil coats the surface of zinc powder, and only a small amount of hydrogen is generated when the zinc powder is soaked in aqueous emulsion for 2 weeks, indicating that the zinc powder has not reacted with water, thus well protecting the zinc powder;

[0044] (3) The flaky zinc used in the present application and the flaky aluminum in the aluminum silver paste are both silver white, and the flaky zinc sinks and the flaky aluminum floats due to the different specific gravities, resulting in a silver white effect similar to chromium plating on the surface of the coating, and the flaky pigment reflects sunlight, also achieving the effect of reflecting and insulating heat;

[0045] (4) The use of the selected high molecular weight epoxy resin aqueous dispersion (emulsion) and the adhesion promoter in the present application can achieve the effect of painting on rusted steel roofs. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 The molecular structure of the tung oil coated zinc powder of the present application is shown in the figure. DETAILED DESCRIPTION

[0047] In order to make the present application more easily understood, the present application is further described below in conjunction with specific examples. It should be understood that these examples are only used to illustrate the present application and not used to limit the scope of the present application. Obviously, the described examples are only a part of the examples of the present application, but not all the examples. Based on the examples in the present application, all the other examples obtained by those skilled in the art without making creative efforts are within the scope of protection of the present application. Unless otherwise defined, the professional terms used below are consistent with the meanings understood by those skilled in the art; unless otherwise specified, the raw materials and reagents involved in the present application can be purchased from the market or prepared by the known methods.

[0048] In order to solve the problems mentioned in the background art, the present application provides a rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder, the formula of the rusted anti-rust reflective thermal insulation coating includes, in terms of mass fraction: natural tung oil 5-10 parts, flaky zinc powder 60-65 parts, aluminum silver paste 10-15 parts, lubricant 1-2 parts, adhesion promoter 2-4 parts, high molecular epoxy resin aqueous dispersion 8-12 parts, polymerization catalyst 0.5-1 part, and cosolvent 5-10 parts.

[0049] Preferably, the flaky zinc powder is 800 mesh flaky zinc powder; and the aluminum silver paste is sodium stearate coated flaky aluminum powder.

[0050] Preferably, the lubricant is talc.

[0051] Preferably, the adhesion promoter is an organosilane adhesion promoter; and the cosolvent is an alcohol ether solvent.

[0052] Preferably, the polymerization catalyst is cobalt isooctoate.

[0053] Preferably, the cosolvent includes one or both of diethylene glycol butyl ether and dipropylene glycol butyl ether.

[0054] Preferably, the high molecular epoxy resin aqueous dispersion is a water-based single-component epoxy emulsion.

[0055] Preferably, the organosilane adhesion promoter includes 3-chloropropyltrimethoxysilane.

[0056] In order to solve the problems mentioned in the background art, the present application also provides a preparation method of the above-described rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder, which includes the following steps:

[0057] Step 1: reacting natural tung oil at 60-70°C and a rotation speed of 200-300 r / min for 15-30 min to obtain pre-polymerized tung oil;

[0058] Step 2: At room temperature, under the speed of 800-1000r / min, add flaky zinc powder step by step under stirring;

[0059] Step 3: At the speed of 800-1000r / min, add lubricant to step 2, and disperse for 5-8 minutes until uniform;

[0060] Step 4: At the speed of 800-1000r / min, add polymerization catalyst to step 3, and stir until sticky and unable to stir;

[0061] Step 5: At the speed of 800-1000r / min, add adhesion promoter to step 4, and disperse for 6-8 minutes until uniform;

[0062] Step 6: At the speed of 800-1000r / min, add aluminum silver paste to step 5, and disperse for 6-8 minutes until uniform;

[0063] Step 7: At the speed of 800-1000r / min, add high molecular epoxy resin aqueous dispersion and cosolvent to step 6, and disperse for 6-8 minutes until uniform, to obtain a rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder.

[0064] The following will be further described with specific examples.

[0065] Example 1

[0066] A rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder, according to mass fraction, the formula of the rusted anti-rust reflective thermal insulation coating includes: natural tung oil 10 parts, flaky zinc powder (800 mesh) 60 parts, aluminum silver paste 10 parts, lubricant 1 part, adhesion promoter 2 parts, high molecular epoxy resin aqueous dispersion 11 parts, polymerization catalyst 1 part, cosolvent 5 parts. Natural tung oil is one of tung oil produced by Linxiang Chemical Industry or tung oil produced by Haokun Chemical Industry; aluminum silver paste is ZW6908 (containing sodium stearate) of Zuxing Aluminum Pigment; lubricant is talc, and the talc is one of talc of Harmonious New Material Company or talc of Ousennai Chemical Industry Company; adhesion promoter is 482 (3-chloropropyl trimethoxysilane) of AMPRSO; high molecular epoxy resin aqueous dispersion is Jiafucheng DIC water-based single-component epoxy emulsion WE511; polymerization catalyst is cobalt isooctanoate, and the cobalt isooctanoate is produced by Nanjing Shude New Material.

[0067] The preparation method of the above rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder includes the following steps:

[0068] Step 1: Reacting natural tung oil at 60-70℃, 200-300r / min for 15-30min to obtain pre-polymerized tung oil;

[0069] Step 2: Adding flaky zinc powder step by step under stirring at room temperature, 800-1000r / min;

[0070] Step 3: Adding lubricant to Step 2 under stirring at 800-1000r / min, dispersing for 5-8min until uniform;

[0071] Step 4: Adding polymerization catalyst to Step 3 under stirring at 800-1000r / min, stirring until sticky and un-stirrable;

[0072] Step 5: Adding adhesion promoter to Step 4 under stirring at 800-1000r / min, dispersing for 6-8min until uniform;

[0073] Step 6: Adding aluminum paste to Step 5 under stirring at 800-1000r / min, dispersing for 6-8min until uniform;

[0074] Step 7: Adding high molecular weight epoxy resin aqueous dispersion and cosolvent to Step 6 under stirring at 800-1000r / min, dispersing for 6-8min until uniform, to obtain rusted anti-rust reflective thermal insulation coating containing tung oil coated flaky zinc powder.

[0075] Example 2

[0076] The difference between this example and Example 1 is that natural tung oil 5 parts, flaky zinc powder (800 mesh) 65 parts. Other parameters and operations are the same as Example 1.

[0077] Comparative Example 1

[0078] The difference between this comparative example and Example 1 is that no adhesion promoter is added, high molecular weight epoxy resin aqueous dispersion 12 parts, cosolvent 6 parts. Other parameters and operations are the same as Example 1.

[0079] Comparative Example 2

[0080] The difference between this comparative example and Example 1 is that no natural tung oil is added, flaky zinc powder (800 mesh) 70 parts. Other parameters and operations are the same as Example 1.

[0081] Comparative Example 3

[0082] The difference between this comparative example and Example 1 is that natural tung oil is reacted at room temperature, 200-300r / min for 15-30min to obtain pre-polymerized tung oil. Other parameters and operations are the same as Example 1.

[0083] Performance test and result analysis:

[0084] The modified zinc powder prepared in Example 1-2 and Comparative Example 1-3 was soaked in the aqueous emulsion for 2 weeks. The modified zinc powder in Example 1, Example 2, Comparative Example 1 and Comparative Example 3 could be stably stored in the aqueous emulsion, and no surface foaming of the emulsion occurred, indicating that no hydrogen was generated and that the water molecules in the emulsion did not react with the zinc powder or only a small number of water molecules reacted with the zinc powder. The emulsion surface of Comparative Example 2 foamed obviously after being placed for two weeks, indicating that a large amount of hydrogen was generated. Because tung oil was not coated on the surface of the zinc powder, the water molecules in the emulsion directly contacted with the zinc powder, reacted to generate hydrogen, and the zinc powder was prematurely reacted, so that the zinc powder could not normally play a shielding protection and cathodic protection role in the paint.

[0085] The paint prepared in Example 1-2 was diluted with the corresponding solvent of the paint formulation as a diluent to a suitable viscosity, and was sprayed onto a rusted steel plate, with the film thickness being controlled at about 80 μm. Comparative Examples 1-3 were prepared by the same construction method as in Example 1, and the film thickness was also controlled at about 80 μm. After being placed in the sun on the roof for one week, the test was started. The inspection results are shown in Table 1.

[0086] Table 1:

[0087]

[0088]

[0089] From Table 1, it can be seen that, compared with Example 1, the content of tung oil in Example 1 is reduced, the content of zinc powder is increased, the adhesion is reduced from 7.45 Mpa to 5.36 Mpa, the salt spray resistance does not change, the impact resistance is qualified, the flexibility does not change obviously, and the solar reflectance does not change obviously. Compared with Comparative Example 1, no adhesion promoter is used in Example 1, the adhesion is reduced from 7.45 Mpa to 4.65 Mpa, the salt spray resistance is reduced from 2000 h to 1600 h, the impact resistance is qualified, the flexibility does not change obviously, and the solar reflectance does not change obviously. Compared with Comparative Example 2, no tung oil is used for coating in Example 1, the salt spray resistance is obviously reduced, from 2000 h to 1100 h, the appearance has fine pinholes and blooming, the mirror leveling effect is general, the adhesion is reduced from 7.45 Mpa to 5.51 Mpa, the flexibility and impact resistance test are qualified, and the solar reflectance does not change obviously. Compared with Comparative Example 3, the adhesion of Example 1 is reduced from 7.45 Mpa to 7.42 Mpa, the salt spray resistance is reduced from 2000 h to 1800 h, the flexibility and impact resistance test are qualified, and the solar reflectance does not change obviously. The results show that the adhesion promoter has an effect on the adhesion of the coating, only relying on the chelation between the emulsion and the rusted steel substrate cannot meet the requirements of the rusted construction, and the salt spray resistance is also reduced, the solar reflectance of the coating meets the national standard. The tung oil coating also has an effect on the performance of the zinc powder, the zinc powder without tung oil coating is easy to react with water molecules in the water-based emulsion, resulting in a decrease in the salt spray resistance, the zinc powder is prematurely reacted, thereby reducing or failing to achieve the shielding protection and cathodic protection. In addition, the temperature increase can accelerate the reaction rate, because at a higher temperature, the molecular kinetic energy increases, and the generation rate of the polymer chain is accelerated, the tung oil can be more tightly crosslinked on the surface of the zinc powder, and the zinc powder can be better protected.

[0090] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any changes or replacements within the technical range disclosed by the present application can be easily thought by those skilled in the art, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A rusted anti-rust reflective heat insulation paint comprising a sheet-shaped zinc powder coated with tung oil, characterized in that, The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent. The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent. The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent. The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent. The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent. The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent.

2. The rusted anti-rust reflective heat shield paint comprising the sheet-like zinc powder coated with tung oil according to claim 1, characterized by, The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent.

3. The rusted anti-rust reflective thermal coating comprising the tung oil coated flaky zinc powder according to claim 1, characterized in that, The rust-preventing and anti-rust reflective thermal insulation coating comprises, in parts by mass, 5-10 parts of natural tung oil, 60-65 parts of flaky zinc powder, 10-15 parts of aluminum silver paste, 1-2 parts of lubricant, 2-4 parts of adhesion promoter, 8-12 parts of high molecular epoxy resin aqueous dispersion, 0.5-1 part of polymerization catalyst, and 5-10 parts of cosolvent.

4. The rusted anti-rust reflective thermal coating paint comprising the sheet-like zinc powder coated with tung oil according to claim 1, characterized in that, ​ 5. The rusted anti-rust reflective thermal coating comprising the tung oil coated flaky zinc powder according to claim 3, characterized in that, ​ 6. The rusted anti-rust reflective heat shield paint comprising the sheet-like zinc powder coated with tung oil according to claim 1, characterized by, ​ 7. The rusted anti-rust reflective heat shield paint comprising the sheet-like zinc powder coated with tung oil according to claim 3, characterized by, ​ 8. The process for the preparation of rusted anti-rust reflective thermal insulation paint comprising flaky zinc powder coated with tung oil as claimed in any one of claims 1 to 7, wherein, ​ ​ ​ ​ ​ ​

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