High-solid anticorrosive nano ceramic coating and preparation method thereof

Abstract

The invention discloses a high-solid anticorrosive nano ceramic coating and a preparation method thereof, and belongs to the technical field of paints.The coating is composed of organic silicon modified epoxy resin and special ceramic powder, the organic silicon modified epoxy resin and the special ceramic powder have a synergistic effect to prepare the wear-resistant heavy-duty anticorrosive coating capable of being cured at normal temperature, and the ceramic content reaches 50% or above and contains the modified epoxy resin; in the manufacturing process, the coating has the rigidity of ceramic and the toughness of resin, is smooth in surface, capable of reducing adhesion of dust and other impurities, high in impact resistance, capable of resisting impact of external objects, excellent in corrosion resistance and capable of effectively preventing corrosion of corrosive substances, and the submicron ceramic particles and the resin are combined into unique bag-shaped ceramic to play a protection role. The submicron ceramic particles are coated with the resin and then wrapped under the curing film, the ceramic component is extremely small in shrinkage during curing, the internal stress of the coating is small, the coating is more durable and tough, and the coating can be coated on the surfaces of various materials such as carbon steel, stainless steel, aluminum, titanium, glass fibers, composite materials and concrete and is suitable for protection of various materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of coatings, and specifically relates to a high-solid anti-corrosion nano-ceramic coating and a preparation method thereof. Background Art

[0002] In an industrial environment, numerous facilities are constantly under the serious threat of corrosion. Once the corrosion occurs, the damage it brings is not limited to the destruction of the appearance of the equipment. More importantly, it will damage the structural integrity of the equipment, thereby significantly shortening the service life of the equipment. This situation often leads to huge economic losses and, in many cases, also brings non-negligible safety hazards.

[0003] In such a situation, as an important material that plays a protective and decorative function on the surfaces of various materials, the coatings are facing increasingly strict performance requirements. Different usage scenarios have diverse demands for coatings, which requires coatings to possess various excellent properties to meet actual applications.

[0004] The coatings currently available on the market, although each has certain performance advantages in some aspects, inevitably have obvious performance drawbacks. Taking epoxy coatings as an example, they perform relatively well in terms of anti-corrosion performance. However, they are prone to powdering themselves and have poor weather resistance and temperature resistance. Looking at acrylic polyurethane coatings, although they have good weather resistance, they are relatively weak in anti-corrosion performance and cannot meet the diverse demands for coatings in different scenarios. Summary of the Invention

[0005] In order to overcome the above defects, the present invention provides a high-solid anti-corrosion nano-ceramic coating and a preparation method thereof, solving the problem that the existing coatings cannot simultaneously meet various excellent properties to adapt to the requirements of different usage scenarios. For example, epoxy coatings have good anti-corrosion performance but are prone to powdering, with poor weather resistance and temperature resistance; acrylic polyurethane coatings have good weather resistance but are weak in anti-corrosion performance. In an industrial environment, due to insufficient coating performance, equipment is threatened by corrosion, its structural integrity is damaged, its service life is shortened, and economic losses and safety hazards are generated.

[0006] To achieve the above object, the present invention provides the following technical solution: A high-solid anti-corrosion nano-ceramic coating, wherein the high-solid anti-corrosion nano-ceramic coating is made from a primer-sealer paint and a curing agent.

[0007] The primer-sealer paint includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, reactive diluent, PMA, defoamer, and leveling agent.

[0008] The curing agent is a 100% organosilicon-modified curing agent.

[0009] As a further solution of the present invention: the amount of phenolic epoxy resin is 20 - 30 parts, the amount of dispersant is 0.3 - 0.8 parts, the amount of anti-settling wax powder is 0.2 - 0.5 parts, the amount of rutile titanium dioxide is 8 - 12 parts, the amount of precipitated barium sulfate is 6 - 10 parts, the amount of high-purity zinc phosphate is 15 - 25 parts, the amount of high-efficiency corrosion inhibitor is 1 - 2 parts, the amount of iron-titanium powder is 25 - 33 parts, the amount of reactive diluent is 1 - 3 parts, the amount of PMA is 2 - 4 parts, the amount of defoamer is 0.2 - 0.4 parts, and the amount of leveling agent is 0.2 - 0.4 parts.

[0010] As a further solution of the present invention: the matching ratio of the bottom and surface combined paint and the curing agent is 5:1.

[0011] A preparation method of a high-solid anti-corrosion nano-ceramic coating, the preparation method comprising the following steps:

[0012] S1. Prepare the bottom and surface combined paint;

[0013] S2. Mix the bottom and surface combined paint and the curing agent.

[0014] As a further solution of the present invention, the specific steps of S1 are as follows:

[0015] S101. First, add phenolic epoxy resin to the reaction kettle, and successively add precipitated barium sulfate and high-purity zinc phosphate at a stirring speed of 300 - 500 revolutions per minute, and stir for 10 - 15 minutes;

[0016] S102. Then increase the stirring speed to 800 - 1000 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 20 - 30 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer and leveling agent, and stir at 70 - 90 °C for 30 - 45 minutes.

[0017] As a further solution of the present invention: the specific steps of S2 are as follows:

[0018] S201. When mixing the bottom and surface combined paint and the curing agent, slowly add the weighed curing agent to the bottom and surface combined paint, pre-stir for 5 - 10 minutes at a stirring speed of 200 - 300 revolutions per minute, and at the same time preheat the ambient temperature to 15 - 20 °C to make the curing agent preliminarily and evenly dispersed in the bottom and surface combined paint;

[0019] S202. Increase the stirring speed to 400 - 600 revolutions per minute, continue to stir for 10 - 15 minutes, and at the same time increase and control the ambient temperature at 20 - 30 °C to make the bottom and surface combined paint and the curing agent fully and evenly mixed.

[0020] As a further solution of the present invention: in S2, after mixing the bottom coat and the curing agent, the mixed material is filtered through a filter screen with a mesh number of 200-300 to remove existing large particle impurities.

[0021] As a further solution of the present invention: in S2, after the bottom coat and the curing agent are mixed to form a high solid content anti-corrosion nano-ceramic coating, the coating is subjected to vacuum defoaming treatment with a vacuum degree of 0.8-0.95 MPa and a defoaming time of 10-20 minutes to remove air bubbles in the coating.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] 1. In the present invention, it is composed of organosilicon-modified epoxy resin and special ceramic powder, and a wear-resistant heavy anti-corrosion coating that can be cured at room temperature is made by combining the two. Due to the synergistic effect of organosilicon-modified epoxy resin and special ceramic powder, the ceramic content in the coating reaches more than 50% and contains modified epoxy resin. During the production process, the coating can combine the rigidity of ceramics and the toughness of resin, so the coating has a super-smooth surface, which helps to reduce the adhesion of dust and other impurities, extremely strong impact resistance, and can resist the impact of external objects without being easily damaged; there is also excellent corrosion resistance, which can effectively prevent the erosion of corrosive substances. During the production process, sub-micron ceramic particles and resin combine to form a unique sac-like ceramic to play a protective role. Each sub-micron ceramic particle is tightly coated with resin and wrapped under the cured film, and the ceramic component shrinks very little during curing, so the internal stress in the cured coating is very small, which creates the characteristics of the coating being more durable and tougher, enabling it to be directly coated on the surfaces of various materials such as carbon steel, stainless steel, aluminum, titanium, fiberglass, composites, and concrete, and is widely applicable to the protection of various materials.

[0024] 2. In the present invention, by using phenolic epoxy resin, 100% organosilicon-modified curing agent, high-purity zinc phosphate, and active diluent, during the mixing process, since phenolic epoxy resin itself contains phenolic and epoxy functional groups, the organosilicon-modified curing agent reacts with phenolic epoxy resin, high-purity zinc phosphate plays a corrosion inhibition role in the coating system, and the active diluent can adjust the viscosity of the coating, thereby generating various beneficial functional groups, enabling the coating to better adapt to different environments, whether it is high temperature, humidity, or acid-base environment, and can have better performance in terms of weather resistance, adhesion, etc., thus improving the overall use effect of the coating. At the same time, the coating with various beneficial functional groups has the characteristic of a thin coating. When achieving the same protection and decoration effects, compared with other thick coating paints, it can reduce the usage amount of materials and lower costs. Specific embodiments

[0025] The technical solutions of the present application will be further described in detail below in conjunction with specific embodiments.

[0026] The present invention provides a technical solution: a high-solids anti-corrosion nano-ceramic coating, which is made of a one-component primer and a curing agent;

[0027] The one-component primer includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, reactive diluent, PMA, defoamer, and leveling agent;

[0028] The curing agent is a 100% silicone-modified curing agent.

[0029] The amount of phenolic epoxy resin is 20-30 parts, the amount of dispersant is 0.3-0.8 parts, the amount of anti-settling wax powder is 0.2-0.5 parts, the amount of rutile titanium dioxide is 8-12 parts, the amount of precipitated barium sulfate is 6-10 parts, the amount of high-purity zinc phosphate is 15-25 parts, the amount of high-efficiency corrosion inhibitor is 1-2 parts, the amount of iron-titanium powder is 25-33 parts, the amount of reactive diluent is 1-3 parts, the amount of PMA is 2-4 parts, the amount of defoamer is 0.2-0.4 parts, and the amount of leveling agent is 0.2-0.4 parts.

[0030] The mixing ratio of the one-component primer and the curing agent is 5:1.

[0031] A preparation method of a high-solids anti-corrosion nano-ceramic coating, the preparation method includes the following steps:

[0032] S1. Prepare the one-component primer;

[0033] S101. First, add phenolic epoxy resin to the reaction kettle, and at a stirring speed of 300-500 revolutions per minute, sequentially add precipitated barium sulfate and high-purity zinc phosphate, and stir for 10-15 minutes;

[0034] S102. Then increase the stirring speed to 800-1000 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 20-30 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer, and leveling agent, and stir at 70-90 °C for 30-45 minutes.

[0035] S2. Mix the one-component primer and the curing agent;

[0036] S201. When mixing the one-component primer and the curing agent, slowly add the weighed curing agent to the one-component primer, pre-stir at a stirring speed of 200-300 revolutions per minute for 5-10 minutes, and at the same time preheat the ambient temperature to 15-20 °C to make the curing agent preliminarily and uniformly dispersed in the one-component primer;

[0037] S202. Increase the stirring speed to 400 - 600 revolutions per minute, continue stirring for 10 - 15 minutes, and at the same time raise and control the ambient temperature at 20 - 30 °C to fully and evenly mix the primer-sealer paint and the curing agent.

[0038] In S2, after mixing the primer-sealer paint and the curing agent, filter the mixed material. The mesh number of the filter screen used is 200 - 300 meshes to remove the existing large particle impurities.

[0039] In S2, after the primer-sealer paint and the curing agent are mixed, conduct vacuum defoaming treatment on the coating. The vacuum degree is 0.8 - 0.95 MPa, and the defoaming time is 10 - 20 minutes to remove the air bubbles in the coating.

[0040] Example 1:

[0041] A high-solids anti-corrosion nano-ceramic coating, which is made of a primer-sealer paint and a curing agent;

[0042] The primer-sealer paint includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, reactive diluent, PMA, defoamer, and leveling agent;

[0043] The curing agent is 100% silicone-modified curing agent.

[0044] The number of parts of phenolic epoxy resin is 20 parts, the number of parts of dispersant is 0.5 part, the number of parts of anti-settling wax powder is 0.3 part, the number of parts of rutile titanium dioxide is 10 parts, the number of parts of precipitated barium sulfate is 8 parts, the number of parts of high-purity zinc phosphate is 15 parts, the number of parts of high-efficiency corrosion inhibitor is 1.5 parts, the number of parts of iron-titanium powder is 25 parts, the number of parts of reactive diluent is 2 parts, the number of parts of PMA is 3 parts, the number of parts of defoamer is 0.3 part, and the number of parts of leveling agent is 0.3 part.

[0045] The matching ratio of the primer-sealer paint and the curing agent is 5:1.

[0046] A preparation method of a high-solids anti-corrosion nano-ceramic coating, the preparation method includes the following steps:

[0047] S1. Prepare the primer-sealer paint;

[0048] S101. First add phenolic epoxy resin to the reaction kettle, and at a stirring speed of 300 revolutions per minute, sequentially add precipitated barium sulfate and high-purity zinc phosphate, and stir for 10 minutes;

[0049] S102. Then increase the stirring speed to 800 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 20 - 30 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer, and leveling agent, and stir at 70 °C for 30 minutes.

[0050] S2. Mix the primer-sealer paint and the curing agent;

[0051] S201. When mixing the primer-sealer paint and the curing agent, slowly add the weighed curing agent in proportion to the primer-sealer paint, and pre-stir for 5 minutes at a stirring speed of 200 revolutions per minute. At the same time, preheat the ambient temperature to 15°C to preliminarily and evenly disperse the curing agent in the primer-sealer paint;

[0052] S202. Increase the stirring speed to 400 revolutions per minute and continue stirring for 10 minutes. At the same time, raise and control the ambient temperature at 20°C to fully and evenly mix the primer-sealer paint and the curing agent.

[0053] In S2, after mixing the primer-sealer paint and the curing agent, filter the mixed material. The mesh number of the filter screen used is 200 meshes to remove the existing large particle impurities.

[0054] In S2, after the primer-sealer paint and the curing agent are mixed to form a high-solids anti-corrosion nano-ceramic coating, perform vacuum degassing treatment on the coating. The vacuum degree is 0.8 MPa and the degassing time is 10 minutes to remove the air bubbles in the coating.

[0055] Example 2:

[0056] A high-solids anti-corrosion nano-ceramic coating is made of a primer-sealer paint and a curing agent;

[0057] The primer-sealer paint includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, active diluent, PMA, defoamer, and leveling agent;

[0058] The curing agent is 100% silicone-modified curing agent.

[0059] The number of parts of phenolic epoxy resin is 22 parts, the number of parts of dispersant is 0.5 part, the number of parts of anti-settling wax powder is 0.3 part, the number of parts of rutile titanium dioxide is 10 parts, the number of parts of precipitated barium sulfate is 8 parts, the number of parts of high-purity zinc phosphate is 18 parts, the number of parts of high-efficiency corrosion inhibitor is 1.5 parts, the number of parts of iron-titanium powder is 27 parts, the number of parts of active diluent is 2 parts, the number of parts of PMA is 3 parts, the number of parts of defoamer is 0.3 part, and the number of parts of leveling agent is 0.3 part

[0060] The matching ratio of the primer-sealer paint and the curing agent is 5:1.

[0061] A preparation method of a high-solids anti-corrosion nano-ceramic coating, the preparation method includes the following steps:

[0062] S1. Prepare the primer-sealer paint;

[0063] S101. First, add phenolic epoxy resin into the reaction kettle. While stirring at a speed of 350 revolutions per minute, sequentially add precipitated barium sulfate and high-purity zinc phosphate, and stir for 12 minutes.

[0064] S102. Then, increase the stirring speed to 850 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 23 minutes, and then add a dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, active diluent, PMA, defoamer, and leveling agent, and stir at 75 °C for 33 minutes.

[0065] S2. Mix the primer-sealer and the curing agent.

[0066] S201. When mixing the primer-sealer and the curing agent, slowly add the weighed curing agent in proportion to the primer-sealer, and pre-stir for 6 minutes at a stirring speed of 220 revolutions per minute. At the same time, preheat the ambient temperature to 15 - 20 °C to preliminarily and evenly disperse the curing agent in the primer-sealer.

[0067] S202. Increase the stirring speed to 450 revolutions per minute and continue to stir for 11 minutes. At the same time, raise and control the ambient temperature at 22 °C to fully and evenly mix the primer-sealer and the curing agent.

[0068] In S2, after mixing the primer-sealer and the curing agent, filter the mixed material. The mesh number of the filter screen used is 220 meshes to remove the existing large particle impurities.

[0069] In S2, after the primer-sealer and the curing agent are mixed to form a high-solids anti-corrosion nano-ceramic coating, perform vacuum degassing treatment on the coating. The vacuum degree is 0.85 MPa, and the degassing time is 13 minutes to remove the bubbles in the coating.

[0070] Example 3:

[0071] A high-solids anti-corrosion nano-ceramic coating is made from a primer-sealer and a curing agent.

[0072] The primer-sealer includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, active diluent, PMA, defoamer, and leveling agent.

[0073] The curing agent is 100% organosilicon-modified curing agent.

[0074] The amount of phenolic epoxy resin is 25 parts, the amount of dispersant is 0.5 part, the amount of anti-settling wax powder is 0.3 part, the amount of rutile titanium dioxide is 10 parts, the amount of precipitated barium sulfate is 8 parts, the amount of high-purity zinc phosphate is 20 parts, the amount of high-efficiency corrosion inhibitor is 1.5 parts, the amount of iron-titanium powder is 29 parts, the amount of reactive diluent is 2 parts, the amount of PMA is 3 parts, the amount of defoamer is 0.3 part, and the amount of leveling agent is 0.3 part.

[0075] The matching ratio of the bottom and top coat paint and the curing agent is 5:1.

[0076] A preparation method of a high-solid anti-corrosion nano-ceramic coating, the preparation method comprising the following steps:

[0077] S1. Prepare the bottom and top coat paint;

[0078] S101. First, add phenolic epoxy resin to the reaction kettle, and successively add precipitated barium sulfate and high-purity zinc phosphate at a stirring speed of 400 revolutions per minute, and stir for 13 minutes;

[0079] S102. Then increase the stirring speed to 900 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 25 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer and leveling agent, and stir at 80 °C for 38 minutes.

[0080] S2. Mix the bottom and top coat paint and the curing agent;

[0081] S201. When mixing the bottom and top coat paint and the curing agent, slowly add the weighed curing agent to the bottom and top coat paint, pre-stir for 8 minutes at a stirring speed of 250 revolutions per minute, and preheat the ambient temperature to 18 °C at the same time to make the curing agent preliminarily and evenly dispersed in the bottom and top coat paint;

[0082] S202. Increase the stirring speed to 500 revolutions per minute, continue to stir for 13 minutes, and raise and control the ambient temperature at 25 °C at the same time to make the bottom and top coat paint and the curing agent fully and evenly mixed.

[0083] In S2, after mixing the bottom and top coat paint and the curing agent, filter the mixed material, and the mesh number of the filter screen used is 250 mesh to remove the existing large particle impurities.

[0084] In S2, after the bottom and top coat paint and the curing agent are mixed to form a high-solid anti-corrosion nano-ceramic coating, perform vacuum degassing treatment on the coating, the vacuum degree is 0.9 MPa, and the degassing time is 15 minutes to remove the bubbles in the coating.

[0085] Example 4:

[0086] A high-solids anti-corrosion nano-ceramic coating, which is made up of a one-component paint and a curing agent;

[0087] The one-component paint includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, reactive diluent, PMA, defoamer, and leveling agent;

[0088] The curing agent is a 100% silicone-modified curing agent.

[0089] The amount of phenolic epoxy resin is 25 parts, the amount of dispersant is 0.8 part, the amount of anti-settling wax powder is 0.5 part, the amount of rutile titanium dioxide is 12 parts, the amount of precipitated barium sulfate is 10 parts, the amount of high-purity zinc phosphate is 20 parts, the amount of high-efficiency corrosion inhibitor is 2 parts, the amount of iron-titanium powder is 29 parts, the amount of reactive diluent is 3 parts, the amount of PMA is 4 parts, the amount of defoamer is 0.4 part, and the amount of leveling agent is 0.4 part

[0090] The mixing ratio of the one-component paint and the curing agent is 5:1.

[0091] A preparation method of a high-solids anti-corrosion nano-ceramic coating, the preparation method includes the following steps:

[0092] S1. Prepare the one-component paint;

[0093] S101. First, add phenolic epoxy resin into the reaction kettle, and at a stirring speed of 500 revolutions per minute, sequentially add precipitated barium sulfate and high-purity zinc phosphate, and stir for 15 minutes;

[0094] S102. Then increase the stirring speed to 1000 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 30 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer and leveling agent, and stir at 90 °C for 45 minutes.

[0095] S2. Mix the one-component paint and the curing agent;

[0096] S201. When mixing the one-component paint and the curing agent, slowly add the weighed curing agent to the one-component paint, pre-stir at a stirring speed of 300 revolutions per minute for 10 minutes, and at the same time preheat the ambient temperature to 20 °C to make the curing agent preliminarily and evenly dispersed in the one-component paint;

[0097] S202. Increase the stirring speed to 600 revolutions per minute, continue to stir for 15 minutes, and at the same time raise and control the ambient temperature at 30 °C to make the one-component paint and the curing agent fully and evenly mixed.

[0098] In S2, after mixing the bottom-coat-in-one paint and the curing agent, the mixed material is filtered through a 300-mesh filter screen to remove existing large-particle impurities.

[0099] In S2, after the bottom-coat-in-one paint and the curing agent are mixed to form a high-solids anti-corrosion nano-ceramic coating, the coating is subjected to vacuum defoaming treatment at a vacuum degree of 0.95 MPa for 20 minutes to remove the air bubbles in the coating.

[0100] In Examples 1-3, the parts of phenolic epoxy resin, high-purity zinc phosphate, and iron titanium powder are different;

[0101] In Examples 3-4, the parts of dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron titanium powder, reactive diluent, PMA, defoamer, and leveling agent are different;

[0102] The following table is obtained according to Examples 1-4:

[0103]

[0104] It can be seen from Examples 1-4 that in different examples, the coating in Example 3 can meet certain standards in terms of adhesion (all ≥ 8.0 MPa), hardness (all ≥ 5H), high temperature resistance (500 °C), resistance to 10% HCl (360 days), resistance to 10% H2SO4 (360 days), resistance to saturated NaCl (360 days), salt spray resistance (≥ 3000 h), etc. This indicates that the formulation and preparation process of the high-solids anti-corrosion nano-ceramic coating have good stability and can ensure the reliability of the coating under various performance requirements.

[0105] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0107] In the present invention, unless otherwise clearly specified and defined, the terms "install", "connect", "connection", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0108] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one solution", "some solutions", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the solution or example are included in at least one solution or example of the present invention. In this specification, the schematic expression of the above terms does not necessarily refer to the same solution or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more solutions or examples.

Claims

1. A high-solid anti-corrosion nano-ceramic coating, characterized in that: The high-solid anti-corrosion nano-ceramic coating is made from a primer-sealer paint and a curing agent; The primer-sealer paint includes phenolic epoxy resin, dispersant, anti-settling wax powder, rutile titanium dioxide, precipitated barium sulfate, high-purity zinc phosphate, high-efficiency corrosion inhibitor, iron-titanium powder, reactive diluent, PMA, defoamer, and leveling agent; The curing agent is a 100% silicone-modified curing agent.

2. The high-solid anti-corrosion nano-ceramic coating according to claim 1, characterized in that: The amount of phenolic epoxy resin is 20 - 30 parts, the amount of dispersant is 0.3 - 0.8 parts, the amount of anti-settling wax powder is 0.2 - 0.5 parts, the amount of rutile titanium dioxide is 8 - 12 parts, the amount of precipitated barium sulfate is 6 - 10 parts, the amount of high-purity zinc phosphate is 15 - 25 parts, the amount of high-efficiency corrosion inhibitor is 1 - 2 parts, the amount of iron-titanium powder is 25 - 33 parts, the amount of reactive diluent is 1 - 3 parts, the amount of PMA is 2 - 4 parts, the amount of defoamer is 0.2 - 0.4 parts, and the amount of leveling agent is 0.2 - 0.4 parts.

3. The high-solid anticorrosive nano-ceramic coating according to claim 1, wherein: The matching ratio of the primer-sealer paint and the curing agent is 5:

1.

4. The preparation method of a high-solid anti-corrosion nano-ceramic coating according to any one of claims 1-3, characterized in that, The preparation method includes the following steps: S1. Prepare the primer-sealer paint; S2. Mix the primer-sealer paint and the curing agent.

5. The preparation method of a high-solid anti-corrosion nano-ceramic coating according to claim 4, characterized in that, The specific steps of S1 are as follows: S101. First, add phenolic epoxy resin to the reaction kettle, and successively add precipitated barium sulfate and high-purity zinc phosphate under a stirring speed of 300 - 500 revolutions per minute, and stir for 10 - 15 minutes; S102. Then increase the stirring speed to 800 - 1000 revolutions per minute, add rutile titanium dioxide and iron-titanium powder, stir for 20 - 30 minutes, and then add dispersant, anti-settling wax powder, high-efficiency corrosion inhibitor, reactive diluent, PMA, defoamer, and leveling agent, and stir at 70 - 90 °C for 30 - 45 minutes.

6. The preparation method of a high-solid anti-corrosion nano-ceramic coating according to claim 5, characterized in that, The specific steps of S2 are as follows: S201. When mixing the primer-sealer paint and the curing agent, slowly add the weighed curing agent to the primer-sealer paint, and pre-stir for 5 - 10 minutes under a stirring speed of 200 - 300 revolutions per minute, and at the same time preheat the ambient temperature to 15 - 20 °C to make the curing agent preliminarily and evenly dispersed in the primer-sealer paint; S202. Increase the stirring speed to 400 - 600 revolutions per minute, continue to stir for 10 - 15 minutes, and at the same time increase and control the ambient temperature at 20 - 30 °C to make the primer-sealer paint and the curing agent fully and evenly mixed.

7. The preparation method of a high-solid anti-corrosion nano-ceramic coating according to claim 5, characterized in that: In S2, after mixing the primer-sealer paint and the curing agent, filter the mixed material, and the mesh number of the filter screen used is 200 - 300 meshes to remove existing large particle impurities.

8. The preparation method of a high-solid anti-corrosion nano-ceramic coating according to claim 5, characterized in that: In S2, after the primer-sealer paint and the curing agent are mixed to form the high-solid anti-corrosion nano-ceramic coating, perform vacuum degassing treatment on the coating, with a vacuum degree of 0.8 - 0.95 MPa and a degassing time of 10 - 20 minutes to remove the air bubbles in the coating.

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