Super wear-resistant coating compositions, coatings, preparation methods and applications

Abstract

This invention discloses an ultra-wear-resistant coating composition, coating, preparation method, and application thereof. The ultra-wear-resistant coating composition comprises a first component and a second component. The first component includes AGA-modified resin, bisphenol A type epoxy resin, pigments, fillers, additives, and solvents, etc. The second component includes γ-glycidyl etheroxypropyltrimethoxysilane-modified TETA resin and solvents, etc. The ultra-wear-resistant coating composition and ultra-wear-resistant ballast tank coating material provided by this invention, due to their specific raw material component design, exhibit excellent wear resistance, salt spray resistance, and resistance to repeated seawater erosion. Applying this coating composition to the inner surface of the steel structure of a ship's ballast tank can effectively resist repeated erosion and abrasion from ballast seawater during navigation, thereby improving the corrosion resistance life of the ship's ballast tank. Furthermore, it is easy to prepare and suitable for large-scale production and application.

Description

Technical Field

[0001] This invention relates to a coating composition, specifically to an ultra-wear-resistant coating composition, an ultra-wear-resistant coating structure, its preparation method and application, such as its application in the coating and protection of ship ballast tanks, belonging to the field of marine coating technology. Background Technology

[0002] Ballast tanks, used to fill ballast seawater when a ship is empty, are an important component of the ship's structure and are a key part of its design. However, due to the constant exposure to seawater, the surface of ballast tanks is prone to wear and corrosion, affecting the ship's operational efficiency and safety. Ballast tank coatings have long been susceptible to blistering and peeling under the prolonged scouring of seawater. Furthermore, due to their poor abrasion resistance, the paint film surface easily loses its shielding properties due to wear, leading to premature pitting corrosion on the steel substrate of the ballast tank. During temperature fluctuations, stress concentration gradually forms at the corrosion sites, causing large-scale paint film peeling. Therefore, developing an ultra-wear-resistant ballast tank coating material is of great significance for improving the reliability of surface protection for ballast tank substrates. Summary of the Invention

[0003] The main objective of this invention is to provide an ultra-wear-resistant coating composition, an ultra-wear-resistant coating structure, its preparation method, and its application, so as to overcome the shortcomings of the prior art.

[0004] To achieve the aforementioned objectives, the technical solution adopted by this invention includes:

[0005] One aspect of this invention provides an ultra-wear-resistant coating composition comprising: a first component and a second component. The first component comprises APTES-Graphene-AGE modified resin (hereinafter referred to as AGA modified resin), bisphenol A type epoxy resin, pigments, fillers, additives, and solvent. The second component comprises γ-glycidoxypropyltrimethoxysilane modified TETA resin and solvent. The AGA modified resin is prepared by pre-addition of APTES resin with AGE followed by reaction with graphene oxide. The γ-glycidoxypropyltrimethoxysilane modified TETA resin is prepared by addition reaction of γ-glycidoxypropyltrimethoxysilane with TETA.

[0006] Another aspect of the present invention provides a method for preparing an ultra-wear-resistant coating composition, comprising:

[0007] Prepare raw materials according to the aforementioned composition of the ultra-wear-resistant coating composition;

[0008] APTES resin was reacted with AGE to obtain a pre-addition resin, and then graphene oxide was added to react and AGA modified resin was obtained.

[0009] The AGA modified resin, bisphenol A type epoxy resin, pigments, fillers, additives and solvents are mixed evenly to obtain the first component;

[0010] TETA was mixed with a solvent, and then γ-glycidoxypropyltrimethoxysilane was added to carry out an addition reaction to obtain the second component.

[0011] The first component and the second component are mixed to obtain the ultra-wear-resistant coating composition.

[0012] Another aspect of the present invention provides the application of the super wear-resistant coating composition in the field of surface protection of marine ballast tank substrates.

[0013] Another aspect of the present invention provides an ultra-wear-resistant ballast tank coating, which is formed from the aforementioned ultra-wear-resistant coating composition.

[0014] Accordingly, another aspect of the present invention provides a method for protecting the surface of a ship ballast tank substrate, comprising: applying the aforementioned ultra-wear-resistant coating composition to the surface of the ship ballast tank substrate to form a protective coating.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] The ultra-wear-resistant coating composition and ultra-wear-resistant ballast tank coating material provided by this invention, due to their specific raw material component design, exhibit excellent wear resistance, salt spray resistance, and resistance to repeated seawater erosion. Applying this coating composition to the inner surface of the steel structure of a ship's ballast tank can effectively resist repeated erosion and corrosion from ballast seawater during navigation, thereby improving the corrosion resistance lifespan of the ship's ballast tank. Furthermore, it is easy to prepare and suitable for large-scale production and application. Detailed Implementation

[0017] In view of the shortcomings of the prior art, the inventors of this case, after long-term research, proposed the technical concept of this invention, which mainly provides a coating composition for forming an ultra-wear-resistant ballast tank coating material and its preparation method, as well as a method for surface protection of ship ballast tank substrates. The following will further explain and illustrate this technical solution, its implementation process, and its principles.

[0018] As one aspect of the technical solution of the present invention, a super wear-resistant coating composition includes: a first component and a second component. The first component includes AGA modified resin, bisphenol A type epoxy resin, pigments, fillers, additives and solvents. The second component includes γ-glycidoxypropyltrimethoxysilane modified TETA resin (hereinafter also referred to as GLYMO-TETA resin) and solvents.

[0019] In a preferred embodiment, the ultra-wear-resistant coating composition specifically comprises:

[0020] The first component comprises the following components, calculated in parts by weight:

[0021]

[0022]

[0023] And the second component comprises the following components calculated in parts by weight:

[0024] 80-82 parts of GLYMO-TETA resin

[0025] Solvent 18-20 parts.

[0026] In one embodiment, the AGA-modified resin is prepared by pre-addition of APTES resin with AGE, followed by an addition reaction with graphene oxide.

[0027] In some more preferred embodiments, the AGA modified resin is prepared by pre-addition of APTES resin and AGE at an equivalent ratio of 2.1-2.2:1, followed by reaction of the product with graphene oxide slurry at a mass ratio of 2.2-2.7:1.

[0028] In one embodiment, the bisphenol A type epoxy resin has an epoxy equivalent of 220-230 and a weight-average molecular weight of 340-345.

[0029] In one embodiment, the pigments and fillers include any one or a combination of two or more of titanium dioxide, iron oxide black, iron oxide red, talc, and silica powder, and are not limited thereto.

[0030] In one embodiment, the additives include any one or a combination of two or more of the following: dispersants (facilitating the wetting and dispersion of pigments and fillers), defoamers, leveling agents, and rheology modifiers, and are not limited thereto. The role of the additives in this invention is to adjust the paint's state and application performance. Specifically, the types of dispersants, defoamers, leveling agents, and rheology modifiers can all be products well-known to those skilled in the art, or they can be commercially available.

[0031] In one embodiment, the solvent includes, but is not limited to, any one or a combination of two or more of xylene, propylene glycol methyl ether (PM), methyl isobutyl ketone (MIBK), acetone, n-butanol, and acetylacetone.

[0032] The solvent in the first component is of the same type as the solvent in the second component.

[0033] In one embodiment, the γ-glycidoxypropyltrimethoxysilane modified TETA resin is prepared by an addition reaction of γ-glycidoxypropyltrimethoxysilane and TETA.

[0034] In some preferred embodiments, the GLYMO-TETA resin comprises the addition reaction product of TETA and γ-glycidoxypropyltrimethoxysilane.

[0035] In some more preferred embodiments, the GLYMO-TETA resin is prepared by an addition reaction of TETA and γ-glycidoxypropyltrimethoxysilane in an equivalence ratio of 6.1-6.3:2.

[0036] In some more preferred embodiments, the active hydrogen equivalent of the GLYMO-TETA resin is 147-153, and the weight-average molecular weight is 624-630.

[0037] In one embodiment, the mass ratio of the first component to the second component is 7.1-7.8:1.

[0038] As another aspect of the technical solution of the present invention, it also relates to a method for preparing the aforementioned ultra-wear-resistant coating composition, comprising:

[0039] The raw materials were prepared according to the aforementioned composition of the ultra-wear-resistant coating composition;

[0040] APTES resin was reacted with AGE to obtain a pre-addition resin, and then graphene oxide was added to react and AGA modified resin was obtained.

[0041] The AGA modified resin, bisphenol A type epoxy resin, pigments, fillers, additives and solvents are mixed evenly to obtain the first component;

[0042] TETA was mixed with a solvent, and then γ-glycidoxypropyltrimethoxysilane was added to carry out an addition reaction to obtain the second component.

[0043] The first component and the second component are mixed to obtain the ultra-wear-resistant coating composition.

[0044] In some preferred embodiments, the preparation method specifically includes: heating APTES resin to 55-65°C, adding AGE in batches with stirring, continuing the addition reaction at 55-65°C for 2-2.5 hours to obtain a pre-addition resin, and then continuing to add graphene oxide slurry in batches with stirring, and reacting at 55-65°C for 1-1.5 hours to obtain AGA modified resin.

[0045] In some preferred embodiments, the graphene oxide slurry has a solid content of 1%, a monolayer ratio of graphene oxide >80%, and a sheet diameter of 0.4-3 μm.

[0046] In some preferred embodiments, the equivalent ratio of the APTES resin to AGE is 2.1-2.2:1.

[0047] In some preferred embodiments, the APTES resin has a weight-average molecular weight of 220-230 and an active hydrogen equivalent of 110-115.

[0048] In some preferred embodiments, the weight-average molecular weight of the AGE resin is 242-270, and the epoxy equivalent is 320-330.

[0049] In some preferred embodiments, the mass ratio of the pre-addition resin to the graphene oxide slurry is 2.2-2.7:1.

[0050] In some more preferred embodiments, the APTES resin used in the preparation of the AGA modified resin has a weight-average molecular weight of 220-230 and an active hydrogen equivalent of 110-115, and the AGE resin used has a weight-average molecular weight of 242-270 and an epoxy equivalent of 320-330. After the APTES resin and AGE resin are pre-added at an equivalent ratio of 2.1-2.2:1, the product is then reacted with a graphene oxide slurry with a solid content of 1%, a monolayer ratio of >80%, and a sheet diameter of 0.4-3 μm at a mass ratio of 2.2-2.7:1 to obtain the AGA modified resin.

[0051] In some preferred embodiments, the preparation method specifically includes: uniformly mixing TETA with a solvent under stirring conditions and heating to 55-65°C, then adding γ-glycidoxypropyltrimethoxysilane in batches, and then carrying out an addition reaction at 55-65°C for 2-2.5 hours under stirring conditions to obtain the second component.

[0052] In some preferred embodiments, the γ-glycidoxypropyltrimethoxysilane used in the preparation of the GLYMO-TETA resin has a weight-average molecular weight of 230-240 and an epoxy equivalent of 235-238.

[0053] In some preferred embodiments, the equivalence ratio of TETA to γ-glycidoxypropyltrimethoxysilane is 6.1-6.3:2.

[0054] In some more specific embodiments, a method for preparing a coating composition for forming an ultra-wear-resistant ballast tank coating specifically includes the following steps:

[0055] Add APTES resin to a reactor, stir at low speed and heat to 55-65℃, then add AGE in batches until the equivalent ratio of APTES resin to AGE is 2.1-2.2:1. Then carry out the addition reaction at 55-65℃ for 2-2.5h under stirring to obtain pre-addition resin. Then, while maintaining stirring, add graphene oxide slurry in batches until the mass ratio of pre-addition resin to graphene oxide slurry is 2.2-2.7:1. Then react at 55-65℃ for 1-1.5h under stirring to obtain AGA modified resin.

[0056] AGA-modified resin, bisphenol A type epoxy resin, pigments, fillers, additives, and solvents are mixed evenly to obtain the first component;

[0057] Mix TETA resin and solvent evenly, stir at low speed and heat to 55-65℃, then add γ-glycidoxypropyltrimethoxysilane in batches until the equivalent ratio of TETA resin to γ-glycidoxypropyltrimethoxysilane is 6.1-6.3:2, and then react at 55-65℃ for 2-2.5 hours under stirring to obtain the second component.

[0058] For example, APTES resin can be added to a reactor, the stirrer can be turned on and stirred at 300-500 r / min while heating to 55-65℃. Then, under stirring conditions, AGE resin can be slowly added dropwise to the APTES resin solution at an equivalent ratio of APTES resin to AGE resin of 2.1-2.2:1. The mixture can be stirred continuously and the temperature controlled at 55-65℃ for 2-2.5 h to obtain a pre-addition resin. Subsequently, while maintaining stirring, graphene oxide slurry can be slowly added to the pre-addition resin at a mass ratio of 2.2-2.7:1. The mixture can then be stirred and reacted at 55-65℃ for 1-1.5 h to obtain AGA modified resin.

[0059] In a more preferred embodiment, the preparation method specifically includes: mixing AGA modified resin with bisphenol A type epoxy resin, pigments, fillers, additives and a portion of solvent in sequence until uniform, then dispersing at a speed of 2000-3000 r / min for 25-30 min, and then adjusting the viscosity of the obtained mixture to 120-130 KU with another portion of solvent to obtain the first component.

[0060] In a more preferred embodiment, the preparation method specifically includes: uniformly mixing TETA resin and solvent under low-speed stirring at 300-500 r / min, heating to 55-65°C, and then slowly adding γ-glycidoxypropyltrimethoxysilane dropwise to the TETA resin solution according to an equivalent ratio of 6.1-6.3:2 between TETA resin and γ-glycidoxypropyltrimethoxysilane, continuously stirring and controlling the temperature at 55-65°C for 2-2.5 h to obtain the second component.

[0061] In one embodiment, the preparation method further includes: mixing the first component and the second component evenly at a mass ratio of 7.1-7.8:1.

[0062] Furthermore, another aspect of the present invention provides an ultra-wear-resistant ballast tank coating structure, which is formed from the aforementioned ultra-wear-resistant coating composition.

[0063] Furthermore, the thickness of the ultra-wear-resistant ballast tank coating is 300-320 μm.

[0064] The ultra-wear-resistant ballast tank coating material provided by this invention, due to the aforementioned raw material component design, exhibits excellent wear resistance, salt spray resistance, and resistance to repeated seawater erosion. For example, in a wear resistance test under 1000g / 1000r conditions, the mass loss of this coating material is no more than 13mg. After 4800h of salt spray resistance and 4800h of seawater immersion resistance tests, the coating material shows no rusting, peeling, or blistering, and can pass a 180-day PSPC ballast tank simulation test.

[0065] As another aspect of the technical solution of the present invention, it also relates to the application of the ultra-wear-resistant coating composition or ultra-wear-resistant ballast tank coating structure in the field of surface protection of ship ballast tank substrate.

[0066] For example, one embodiment of the present invention provides a method for protecting the surface of a ship ballast tank substrate, which includes: applying the ultra-abrasion-resistant coating composition to the surface of the ship ballast tank substrate to form a protective coating.

[0067] The preparation mechanism of the ultra-wear-resistant coating composition of the present invention is as follows: AGE is reacted with APTES to eliminate the primary amine in APTES, leaving only a secondary amine group. This structure allows it to further react with the epoxy groups on the surface of graphene oxide to form an anchoring effect without forming chain polymerization. The resulting AGA-modified resin has graphene oxide sheets at its center, with the pre-addition products of APTES and AGE distributed in a comb-like pattern on its surface, creating a steric hindrance effect and preventing agglomeration between graphene sheets. The silanyl alkoxy groups are located on the outer surface of this structure, enabling further hydrolysis and polymerization with the silanyl alkoxy groups on the GLYMO-TETA resin in the second component during the subsequent two-component coating reaction, thereby firmly grafting graphene into the three-dimensional network structure of the coating material.

[0068] In the preparation process of GLYMO-TETA resin, by controlling the reaction stoichiometry, γ-glycidoxypropyltrimethoxysilane preferentially reacts with the most reactive primary amines at both ends of the TETA structure to generate a structure with 4 secondary amine groups and 6 silyl alkoxy groups. This structure, through further reaction with the epoxy and silyl alkoxy groups of the first component, can form a robust epoxy-graphene three-dimensional network structure, providing long-lasting wear resistance and shielding properties.

[0069] In summary, by applying the above technical solution to the inner surface of the steel structure of the ballast tank of a ship, the ultra-wear-resistant coating composition of the present invention can effectively resist the repeated scouring and erosion of ballast seawater during the voyage, thereby improving the corrosion resistance life of the ship's ballast tank. Moreover, it is easy to prepare and suitable for large-scale production and application.

[0070] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, the technical solutions of the present invention are further described below with reference to several embodiments, but the present invention is not limited to the scope of the described embodiments. The reagents and raw materials used in the following embodiments are all commercially available, and the test methods without specific conditions are generally performed under conventional conditions or according to the conditions recommended by the respective manufacturers. Furthermore, in the following embodiments, low-speed stirring refers to a rotation speed of 500 r / min or less, 500-2000 r / min is medium-speed stirring, and high-speed stirring refers to a rotation speed of 2000 r / min or more. High-speed dispersion refers to a rotation speed of 2000-3000 r / min.

[0071] Secondly, the term "an embodiment" or "embodiment" as used in this invention refers to a specific feature, structure, or characteristic that can be included in at least one implementation of this invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0072] Example 1

[0073] A method for preparing a coating composition for forming an ultra-wear-resistant ballast tank coating material includes the following steps:

[0074] (1) Add 2310g of APTES resin to the reactor, turn on the stirrer and stir at low speed and heat to about 60°C. Then, under stirring conditions, slowly add 3230g of AGE resin to the APTES resin solution, continue stirring and control the temperature at about 60°C for about 2.5h. Then, under low stirring conditions, slowly add 2518g of graphene oxide slurry, continue stirring and control the temperature at about 60°C for about 1.5h to obtain AGA modified resin.

[0075] (2) 2300g of bisphenol A type epoxy resin 6101 (epoxy equivalent 220-230, weight average molecular weight 340-345) was mixed with 1000g of AGA modified resin, 5300g of titanium dioxide, 100g of dispersant, 100g of rheology modifier, 740g of xylene and 360g of n-butanol in sequence until uniformly mixed. The mixture was dispersed at high speed for about 30min. Then, the viscosity of the mixture was adjusted to about 120KU with 100g of xylene to obtain the first component.

[0076] (3) Add 1897g of TETA resin and 2000g of xylene to the reactor, turn on the stirrer and stir at low speed and heat to about 60°C. Then, under stirring conditions, slowly add 6103g of γ-glycidoxypropyltrimethoxysilane KH560 to the TETA resin solution, continue stirring and control the temperature at about 60°C for about 2.5h to obtain the second component.

[0077] (4) Mix the first component and the second component evenly at a mass ratio of about 7.1:1 to obtain a coating composition for forming an ultra-wear-resistant ballast tank coating material.

[0078] Example 2

[0079] A method for preparing a coating composition for forming an ultra-wear-resistant ballast tank coating material includes the following steps:

[0080] (1) Add 2420g of APTES resin to the reactor, turn on the stirrer and stir at low speed and heat to about 60°C. Then, under stirring conditions, slowly add 3230g of AGE resin to the APTES resin solution, continue stirring and control the temperature at about 60°C for about 2.5h. Then, under low stirring conditions, slowly add 2092g of graphene oxide slurry, continue stirring and control the temperature at about 60°C for about 1.5h to obtain AGA modified resin.

[0081] (2) 2500g of bisphenol A type epoxy resin 6101 (epoxy equivalent 220-230, weight average molecular weight 340-345) was mixed with 1200g of AGA modified resin, 5200g of titanium dioxide, 50g of dispersant, 50g of rheology modifier, 600g of xylene and 300g of n-butanol in sequence until uniformly mixed. The mixture was dispersed at high speed for about 30min. Then, the viscosity of the mixture was adjusted to about 120KU with 100g of xylene to obtain the first component.

[0082] (3) Add 1946g of TETA resin and 2000g of xylene to the reactor, turn on the stirrer and stir at low speed and heat to about 60°C. Then, under stirring conditions, slowly add 6054g of γ-glycidoxypropyltrimethoxysilane KH560 to the TETA resin solution, continue stirring and control the temperature at about 60°C for about 2.5h to obtain the second component.

[0083] (4) Mix the first component and the second component evenly at a mass ratio of about 7.8:1 to obtain a coating composition for forming an ultra-wear-resistant ballast tank coating material.

[0084] Example 3

[0085] A method for preparing a coating composition for forming an ultra-wear-resistant ballast tank coating material includes the following steps:

[0086] (1) Add 2420g of APTES resin to the reactor, turn on the stirrer and stir at low speed and heat to about 55°C. Then, under stirring conditions, slowly add 3230g of AGE resin to the APTES resin solution, continue stirring and control the temperature at about 55°C for about 2.5h. Then, under low speed stirring conditions, slowly add 2092g of graphene oxide slurry, continue stirring and control the temperature at about 55°C for about 1.5h to obtain AGA modified resin.

[0087] (2) Bisphenol A type epoxy resin 6101 (epoxy equivalent 220-230, weight average molecular weight 340-345) was mixed with AGA modified resin, iron oxide black, iron oxide red, defoamer, propylene glycol methyl ether and methyl isobutyl ketone in sequence and dispersed at high speed for about 30 min. Then the viscosity of the mixture was adjusted to about 120 KU with xylene to obtain the first component, wherein GA modified resin was 10 parts, bisphenol A type epoxy resin was 20 parts, pigments and fillers were 59 parts, additives were 1 part and solvent was 10 parts.

[0088] (3) Add TETA resin and xylene to the reactor, turn on the stirrer and stir at low speed and heat to about 55°C. Then, under stirring conditions, slowly add γ-glycidoxypropyltrimethoxysilane KH560 to the TETA resin solution, continue stirring and control the temperature at about 55°C for about 2.5 hours to obtain the second component, wherein 82 parts of γ-glycidoxypropyltrimethoxysilane modified TETA resin and 18 parts of solvent are obtained, and the equivalent ratio of TETA to γ-glycidoxypropyltrimethoxysilane is 6.2:2.

[0089] (4) Mix the first component and the second component evenly at a mass ratio of about 7.4:1 to obtain a coating composition for forming an ultra-wear-resistant ballast tank coating material.

[0090] Example 4

[0091] A method for preparing a coating composition for forming an ultra-wear-resistant ballast tank coating material includes the following steps:

[0092] (1) Add 2420g of APTES resin to the reactor, turn on the stirrer and stir at low speed and heat to about 65°C. Then, under stirring conditions, slowly add 3230g of AGE resin to the APTES resin solution, continue stirring and control the temperature at about 65°C for about 2 hours. Then, under low speed stirring conditions, slowly add 2092g of graphene oxide slurry, continue stirring and control the temperature at about 65°C for about 1 hour to obtain AGA modified resin.

[0093] (2) Bisphenol A type epoxy resin 6101 (epoxy equivalent 220-230, weight average molecular weight 340-345) was mixed with AGA modified resin, talc, silica powder, leveling agent, acetone and acetylacetone in sequence and dispersed at high speed for about 30 minutes. Then, the viscosity of the mixture was adjusted to about 120 KU with xylene to obtain the first component, wherein GA modified resin was 12 parts, bisphenol A type epoxy resin was 25 parts, pigments and fillers were 50 parts, additives were 2 parts and solvent was 11 parts.

[0094] (3) Add TETA resin and xylene to the reactor, turn on the stirrer and stir at low speed and heat to about 65°C. Then, under stirring conditions, slowly add γ-glycidoxypropyltrimethoxysilane KH560 to the TETA resin solution, continue stirring and control the temperature at about 65°C for about 2 hours to obtain the second component, wherein 80 parts of γ-glycidoxypropyltrimethoxysilane modified TETA resin and 20 parts of solvent are obtained, and the equivalent ratio of TETA to γ-glycidoxypropyltrimethoxysilane is 6.3:2.

[0095] (4) Mix the first component and the second component evenly at a mass ratio of about 7.6:1 to obtain a coating composition for forming an ultra-wear-resistant ballast tank coating material.

[0096] Compare with Example 1

[0097] The preparation method of the ballast tank coating material composition provided in this comparative example is basically the same as that in Example 1, except that the reaction mass ratio of APTES and AGE in Example 1 is replaced with 2000g:3230g, that is, the reaction equivalent ratio of APTES and AGE is 1.8:1.

[0098] Compare with Example 2

[0099] The preparation method of the ballast tank coating material composition provided in this comparative example is basically the same as that in Example 1, except that the mass of graphene slurry in Example 1 is replaced with 2770g, that is, the mass ratio of pre-reacted resin to graphene oxide slurry is 2:1.

[0100] Compare with Example 3

[0101] The preparation method of the ballast tank coating material composition provided in this comparative example is basically the same as that in Example 1, except that the proportion of AGA modified resin in component A in Example 1 is reduced to 7%.

[0102] Compare with Example 4

[0103] The preparation method of the ballast tank coating material composition provided in this comparative example is basically the same as that in Example 1, except that the reaction mass ratio of TETA to KH560 in Example 1 is replaced with 130:476, that is, the equivalent ratio is 5.3:2.

[0104] Compare with Example 5

[0105] The preparation method of the ballast tank coating material composition provided in this comparative example is basically the same as that in Example 1, except that the mass ratio of the first component to the second component in Example 1 is replaced with 6.8:1.

[0106] The coating compositions of Examples 1-4 and Comparative Examples 1-5, along with commercially available conventional epoxy ballast tank coatings, were applied to the surface of sandblasted steel plates to form coatings of the same thickness. The performance of these coatings was then tested, and the results are shown in Table 1. All test results in Table 1 are averages of test results from multiple batches of products.

[0107] Table 1. Performance test results of the coating compositions of Examples 1-4 and Comparative Examples 1-5 and commercially available conventional epoxy ballast tank coatings after coating formation.

[0108]

[0109]

[0110] Referring to Table 1, it can be seen that the coating compositions of Examples 1-2 can form an ultra-wear-resistant ballast tank coating material. Under abrasion resistance testing at 1000g / 1000r, the mass loss is no more than 13mg. After 4800h of salt spray resistance and 4800h of seawater immersion resistance testing, the coating material showed no rust, peeling, or blistering, and passed a 180-day PSPC ballast tank simulation test. Therefore, its overall performance far surpasses that of commercially available conventional epoxy ballast tank coatings.

[0111] In addition, the inventors of this case also conducted experiments with other raw materials, process operations, and process conditions described in this specification, referring to the aforementioned embodiments, and obtained relatively ideal results in all cases.

[0112] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A super wear-resistant coating composition, characterized in that, include: The first component comprises a first component and a second component. The first component comprises the following components in parts by weight: 10-12 parts of AGA-modified resin, 20-25 parts of bisphenol A type epoxy resin, 50-60 parts of pigments and fillers, 1-2 parts of additives, and 10-12 parts of solvent. The second component comprises γ-glycidyl etheroxypropyltrimethoxysilane-modified TETA resin and solvent. The mass ratio of the first component to the second component is 7.1-7.8:

1. The AGA-modified resin is... The γ-glycidyl etheroxypropyltrimethoxysilane modified TETA resin is prepared by pre-addition of APTES resin and AGE at an equivalent ratio of 2.1-2.2:1, followed by reaction of the product with graphene oxide slurry at a mass ratio of 2.2-2.7:

1.

2. The ultra-wear-resistant coating composition according to claim 1, characterized in that, The second component comprises the following components in parts by weight: 80-82 parts of γ-glycidyl etheroxypropyltrimethoxysilane modified TETA resin and 18-20 parts of solvent.

3. The ultra-wear-resistant coating composition according to claim 1 or 2, characterized in that: The bisphenol A type epoxy resin has an epoxy equivalent of 220-230 and a weight-average molecular weight of 340-345.

4. The ultra-wear-resistant coating composition according to claim 1, characterized in that: The pigments and fillers include any one or a combination of two or more of titanium dioxide, iron oxide black, iron oxide red, talc, and silica powder.

5. The ultra-wear-resistant coating composition according to claim 1, characterized in that: The additives include any one or a combination of two or more of the following: dispersants, defoamers, leveling agents, and rheology modifiers.

6. The ultra-wear-resistant coating composition according to claim 1, characterized in that: The solvent includes any one or a combination of two or more of xylene, propylene glycol methyl ether, methyl isobutyl ketone, acetone, n-butanol, and acetylacetone.

7. The ultra-wear-resistant coating composition according to claim 6, characterized in that: The solvents in the first component and the second component are the same.

8. The ultra-wear-resistant coating composition according to claim 1, characterized in that: The γ-glycidyl etheroxypropyltrimethoxysilane modified TETA resin has an active hydrogen equivalent of 147-153 and a weight-average molecular weight of 624-630.

9. A method for preparing an ultra-wear-resistant coating composition, characterized in that, include: Raw materials for formulating the ultra-wear-resistant coating composition according to any one of claims 1-8; APTES resin was reacted with AGE to obtain a pre-addition resin, and then graphene oxide was added to react and AGA modified resin was obtained. The AGA modified resin, bisphenol A type epoxy resin, pigments, fillers, additives and solvents are mixed evenly to obtain the first component; TETA was mixed with a solvent, and then γ-glycidoxypropyltrimethoxysilane was added to carry out an addition reaction to obtain the second component. The first component and the second component are mixed to obtain the ultra-wear-resistant coating composition.

10. The preparation method according to claim 9, characterized in that, Specifically, it includes: APTES resin was heated to 55-65℃, and AGE was added in batches with stirring. The addition reaction was continued at 55-65℃ for 2-2.5h to obtain pre-addition resin. Then, graphene oxide slurry was added in batches with stirring and reacted at 55-65℃ for 1-1.5h to obtain AGA modified resin.

11. The preparation method according to claim 10, characterized in that: The graphene oxide slurry has a solid content of 1%, a monolayer ratio of graphene oxide >80%, and a sheet diameter of 0.4-3μm.

12. The preparation method according to claim 10, characterized in that: The equivalent ratio of APTES resin to AGE is 2.1-2.2:

1.

13. The preparation method according to claim 10, characterized in that: The APTES resin has a weight-average molecular weight of 220-230 and an active hydrogen equivalent of 110-115.

14. The preparation method according to claim 10, characterized in that: The weight-average molecular weight of the AGE is 242-270, and the epoxy equivalent is 320-330.

15. The preparation method according to claim 10, characterized in that: The mass ratio of the pre-addition resin to the graphene oxide slurry is 2.2-2.7:

1.

16. The preparation method according to claim 9, characterized in that, Specifically, it includes: Under stirring conditions, TETA and solvent are mixed uniformly and heated to 55-65°C. Then, γ-glycidoxypropyltrimethoxysilane is added in batches, and the addition reaction is carried out at 55-65°C for 2-2.5 hours under stirring conditions to obtain the second component.

17. The preparation method according to claim 16, characterized in that: The weight-average molecular weight of the γ-glycidoxypropyltrimethoxysilane is 230-240, and the epoxy equivalent is 235-238.

18. The preparation method according to claim 16, characterized in that: The equivalence ratio of TETA to γ-glycidoxypropyltrimethoxysilane is 6.1-6.3:

2.

19. The application of the ultra-abrasion resistant coating composition according to any one of claims 1-8 in the field of surface protection of marine ballast tank substrates.

20. A coating for an ultra-wear-resistant ballast tank, characterized in that, The ultra-wear-resistant ballast tank coating is formed from the ultra-wear-resistant coating composition according to any one of claims 1-8.

21. The ultra-wear-resistant ballast tank coating according to claim 20, characterized in that: The thickness of the ultra-wear-resistant ballast tank coating is 300-320µm.

22. A method for surface protection of a ship's ballast tank substrate, characterized in that, include: The ultra-abrasion-resistant coating composition of any one of claims 1-8 is applied to the surface of a ship ballast tank substrate to form a protective coating.

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