A marine bio-coating system

Abstract

The application provides a marine biological coating system and relates to the technical field of biological coating, and comprises an antirust epoxy primer and a polysiloxane connecting primer; the antirust epoxy primer is composed of the following components: epoxy resin 20%, antirust pigment 15%, auxiliary agent 15%, solvent 30% and curing agent 20%; the polysiloxane connecting primer is composed of the following components: polysiloxane resin 30%, antirust pigment 10%, auxiliary agent 15%, solvent 30%, curing agent 10% and antifouling agent 5%. The application optimizes the composition and preparation process of the coating, improves the weather resistance, salt mist resistance and corrosion resistance of the coating, and prolongs the service life of the coating.

Description

Technical Field

[0001] This invention relates to the field of biocoating technology, and more specifically to a marine biocoating system. Background Technology

[0002] Ship hull corrosion is a metal corrosion phenomenon caused by prolonged exposure of the hull to seawater and atmosphere. In seawater, the hull is eroded by oxygen, salt, and other corrosive substances, and is also affected by electrolyte effects and the attachment of marine organisms. These factors accelerate the corrosion process. Oxygen in seawater is a key factor leading to metal oxidation, while salt accelerates the corrosion rate. Furthermore, seawater contains other salts and microorganisms, which also accelerate the corrosion process. The electrolyte effect forms tiny batteries between different metal parts of the hull, causing current to flow through the metal surface, thus triggering corrosion. Marine organisms attached to the hull damage the paint film, causing localized electrochemical corrosion. Simultaneously, the metabolic processes of microorganisms secrete corrosive products, further accelerating corrosion.

[0003] Ships are highly susceptible to corrosion from seawater while sailing at sea. Existing protective measures include self-polishing coatings, which have a limited lifespan and require frequent dry-docking maintenance, reducing the ship's economic efficiency. In addition, a large number of marine organisms adhere to the bottom of the ship, causing rust and seriously affecting the ship's normal operation, which is detrimental to the user.

[0004] Therefore, a marine biological coating system is provided to solve the problems mentioned in the background art. Summary of the Invention

[0005] The present invention provides a marine biological coating system that solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows:

[0007] Embodiments of the present invention provide a marine bio-coating system, comprising:

[0008] The anti-rust epoxy primer is composed of the following components: 20% epoxy resin, 15% anti-rust pigment, 15% additives, 30% solvent, and 20% curing agent.

[0009] The polysiloxane bonding primer is composed of the following components: 30% polysiloxane resin, 10% anti-rust pigment, 15% additives, 30% solvent, 10% curing agent, and 5% antifouling agent.

[0010] Through the above technical solution, an anti-corrosion coating can be precisely formulated according to the prescribed formula ratio. The solvent setting makes the coating easy to apply, thus improving the coating's efficiency.

[0011] Furthermore, the antifouling agent is composed of low surface energy silicon-fluorine compound, and the antifouling agent is in powder form.

[0012] Through the above technical solution, by setting the antifouling agent to a low surface energy silicone-fluorine compound, it has strong antibacterial and algae-removing capabilities: Low surface energy silicone-fluorine compound has effective antibacterial and algae-removing capabilities, which can prevent marine organisms such as barnacles and oysters from attaching to the bottom of the ship or underwater marine facilities, thereby protecting the hull from biofouling damage and having good anti-biofouling effect: By preventing marine organisms from attaching, low surface energy silicone-fluorine compound can extend the service life of the antifouling paint on the bottom of the ship and reduce ship maintenance costs.

[0013] Furthermore, the additive comprises a dispersant, a defoamer, and an anti-settling agent, wherein the dispersant, defoamer, and anti-settling agent are present in equal proportions.

[0014] Through the above technical solution, since the proportions of dispersant, defoamer, and anti-settling agent are the same, it can be ensured that the additives exhibit balanced performance in application. Each additive can fully exert its function, and no function will be excessive or insufficient due to imbalance of proportions, thus improving stability: the balanced proportion helps to improve the stability of the entire additive system. The dispersant can effectively prevent particle agglomeration, the defoamer can quickly eliminate bubbles, and the anti-settling agent can prevent sedimentation. The three work together to ensure that the additives maintain stable performance during storage and use.

[0015] Furthermore, the rust-preventive pigment is composed of iron oxide red.

[0016] Through the above technical solutions, the coating has strong hiding power: iron oxide red provides good hiding power for coatings and other materials, which can cover up defects or undesirable colors in the underlying layer; good dispersibility: iron oxide red is evenly dispersed in coating systems and is not prone to agglomeration, which is conducive to obtaining a uniform coating; and enhanced mechanical strength of the coating: the addition of iron oxide red can increase the mechanical strength of the coating to a certain extent, improve the wear resistance and scratch resistance of the coating, etc. At the same time, the chemical properties of iron oxide red are stable, which improves the stability of the coating in use.

[0017] Furthermore, the dispersant is a stearamide dispersant, the defoamer is a conventional aqueous defoamer, and the anti-settling agent is composed of atmospheric silica.

[0018] Through the above technical solutions, stearamide dispersants can effectively reduce the surface tension between pigment or filler particles, promote their uniform distribution in the carrier, avoid agglomeration and sedimentation, and thus improve the color uniformity and stability of the product.

[0019] Furthermore, the particle size of the silicon-fluorine low surface energy particles is between 100 and 200 μm.

[0020] The above technical solutions improve the stability of coating application.

[0021] Furthermore, the curing agent is an organic curing agent material, specifically an amide-amine.

[0022] The above technical solution utilizes amide-amine as the curing agent. Amide-amines possess excellent curing speed, which helps shorten the production cycle and improve production efficiency. Simultaneously, rapid curing also helps reduce volatile emissions during the curing process, contributing to environmental protection. Furthermore, amide-amine curing agents exhibit good compatibility with various resins and coatings, including epoxy resins and polyester resins. This compatibility ensures that the curing agent is uniformly dispersed within the resin system, thereby achieving better curing results.

[0023] Furthermore, the curing agent is added in three separate applications, each time in a measured amount.

[0024] The above technical solution effectively improves the mixing effect of the curing agent by adding it multiple times, thereby improving the rapid solidification effect of the coating and making it easier for users to use.

[0025] Furthermore, the silicone-fluorine low surface energy antifouling agent is uniformly sprayed onto the surface of the mixture.

[0026] By uniformly spraying the antifouling agent onto the surface of the mixture, the mixing effect is effectively improved, thus enhancing the antifouling effect of the coating.

[0027] Furthermore, the preparation method of the rust-preventive epoxy primer is as follows: the prepared epoxy resin, rust-preventive pigment, dispersant, defoamer and anti-settling agent are mixed evenly to form a pigment slurry, a solvent is added to the pigment slurry and stirred evenly to form a primer solution, a curing agent is added and stirred thoroughly to ensure that each component is evenly dispersed, and finally grinding and dispersing are performed to achieve the required fineness and uniformity.

[0028] The preparation method of the polysiloxane bonding primer is as follows: the prepared polysiloxane resin, anti-rust pigment, dispersant, defoamer and anti-settling agent are mixed evenly to form a pigment slurry. Solvent is added to the pigment slurry and stirred evenly to form a primer solution. Powdered silicone fluorine low surface energy antifouling agent is added to ensure that it is evenly dispersed in the primer solution. Finally, a curing agent is added and stirred thoroughly to ensure that each component is evenly dispersed. Finally, grinding and dispersion are performed to achieve the required fineness and uniformity.

[0029] The above-described solution of the present invention has at least the following beneficial effects:

[0030] 1. This invention utilizes a high proportion of epoxy resin and anti-rust pigments in its anti-rust epoxy primer. These components effectively isolate moisture and oxygen, thus preventing corrosion of the metal substrate under the marine organism coating. The polysiloxane bonding primer also contains anti-rust pigments, further enhancing the anti-rust performance of the entire coating system. Strong antifouling capability: Powdered siloxane low surface energy antifouling agent is added to the polysiloxane bonding primer. Its particle size is between 100 and 200 μm, effectively preventing the adhesion and growth of marine organisms on the coating surface. Siloxane low surface energy, as a widely used antifouling agent, has significant hydrophilic properties and is uniformly dispersed in powder form in this coating system, ensuring the durability of the antifouling effect. Good coating stability and adhesion: The additives in the coating system are combined in equal proportions, effectively improving the dispersibility, stability, and workability of the coating. The dispersant helps to uniformly disperse pigment particles, the defoamer eliminates air bubbles in the coating, and the anti-settling agent prevents pigments from settling during storage. The use of these additives ensures the stability and uniformity of the coating during preparation and application, thereby improving the adhesion between the coating and the metal substrate. Environmental friendliness and sustainability are also key advantages: the low surface energy of silicone fluorine significantly reduces the need for frequent coating replacement or cleaning, thus mitigating environmental pollution. The preparation and application of the coating system adhere to environmental principles, reducing the emission and waste of harmful substances and extending the coating's lifespan. Optimizing the coating composition and preparation process improves the coating's weather resistance, salt spray resistance, and corrosion resistance, extending its service life. The special molecular structure of polysiloxane resin gives it extremely low surface energy, effectively repelling moisture and mucus secreted by marine organisms, making it difficult for them to find stable attachment points on the coating surface. Simultaneously, the low surface energy of silicone fluorine plays a crucial role as an antifouling agent, forming a thin antibacterial layer on the outer surface of the coating, further inhibiting the growth and reproduction of marine organisms. Furthermore, the powdered form of the low surface energy silicone fluorine helps its uniform distribution within the coating, improving the consistency and durability of the antifouling effect. Detailed Implementation

[0031] Exemplary embodiments of the present invention will now be described in more detail. It should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0032] A marine bio-coating system, comprising:

[0033] The anti-rust epoxy primer is composed of the following components: 20% epoxy resin, 15% anti-rust pigment, 15% additives, 30% solvent, and 20% curing agent.

[0034] The polysiloxane bonding primer is composed of the following components: 30% polysiloxane resin, 10% anti-rust pigment, 15% additives, 30% solvent, 10% curing agent, and 5% antifouling agent.

[0035]

[0036] The antifouling agent is composed of low surface energy silicone fluorine powder. The additives are dispersant, defoamer, and antisettling agent, with each component having the same proportion. The anti-rust pigment is iron oxide red, the dispersant is stearamide, the defoamer is a conventional water-based defoamer, and the antisettling agent is atmospheric silica. The low surface energy silicone fluorine powder has a particle size between 100 and 200 μm. The curing agent is an organic curing agent made of amide amine. The curing agent is added in three portions, each time in a measured amount. The low surface energy silicone fluorine antifouling agent is evenly sprayed onto the surface of the mixture.

[0037] By maintaining the same proportions of dispersants, defoamers, and anti-settling agents, it is ensured that the additives exhibit balanced performance in application. Each additive can fully exert its function without any imbalance leading to excessive or insufficient functionality, thus improving stability: a balanced ratio helps improve the stability of the entire additive system. Dispersants effectively prevent particle agglomeration, defoamers quickly eliminate bubbles, and anti-settling agents prevent sedimentation. The synergistic effect of these three agents ensures that the additives maintain stable performance during storage and use. Iron oxide red provides good hiding power for coatings, covering imperfections or undesirable colors in the underlying layer. It has good dispersibility: iron oxide red disperses evenly in coating systems and is not prone to agglomeration, which is conducive to obtaining a uniform coating. It enhances the mechanical strength of the coating: the addition of iron oxide red can increase the mechanical strength of the coating to a certain extent, improving its wear resistance and scratch resistance. At the same time, the chemical stability of iron oxide red improves the stability of the coating during use. Stearamide dispersants can effectively reduce the surface tension between pigment or filler particles, promote their uniform distribution in the carrier, and avoid agglomeration and sedimentation, thereby improving the color uniformity and stability of the product.

[0038] Preparation method of anti-rust epoxy primer: Mix the prepared epoxy resin, anti-rust pigment, dispersant, defoamer and anti-settling agent evenly to form a pigment slurry. Add solvent to the pigment slurry and stir evenly to form a primer solution. Finally, add curing agent and stir thoroughly to ensure that each component is evenly dispersed. Finally, grind and disperse to achieve the required fineness and uniformity.

[0039] The preparation method of the polysiloxane bonding primer is as follows: the prepared polysiloxane resin, anti-rust pigment, dispersant, defoamer and anti-settling agent are mixed evenly to form a pigment slurry. Solvent is added to the pigment slurry and stirred evenly to form a primer solution. Powdered silicone fluorine low surface energy antifouling agent is added to ensure that it is evenly dispersed in the primer solution. Finally, a curing agent is added and stirred thoroughly to ensure that each component is evenly dispersed. Finally, grinding and dispersion are performed to achieve the required fineness and uniformity.

[0040] In summary, this bio-coating exhibits excellent rust-preventive properties: the rust-preventive epoxy primer uses a high proportion of epoxy resin and rust-preventive pigments, which effectively isolate moisture and oxygen, thereby preventing corrosion of the metal substrate under the marine bio-coating.

[0041] The polysiloxane bonding primer also contains rust-preventive pigments, further enhancing the rust-preventive performance of the entire coating system.

[0042] Strong antifouling ability: Powdered fluorosilicone with low surface energy is added to the polysiloxane binder as an antifouling agent. Its particle size is between 100 and 200 μm, which can effectively prevent marine organisms from attaching and growing on the coating surface.

[0043] Silicon-fluorine low surface energy is a widely used antifouling agent with significant hydrophilic properties. In this coating system, it is uniformly dispersed in powder form, ensuring the durability of the antifouling effect.

[0044] Good coating stability and adhesion: The additives in the coating system are combined in the same proportion, which effectively improves the dispersibility, stability and workability of the coating.

[0045] Dispersants help to disperse pigment particles evenly, defoamers can eliminate air bubbles in coatings, and anti-settling agents can prevent pigments from settling during storage.

[0046] The use of these additives ensures the stability and uniformity of the coating during preparation and application, thereby improving the adhesion between the coating and the metal substrate.

[0047] Environmental protection and sustainability: Silicon-fluorine low surface energy has a significant antifouling effect, reducing the need for frequent coating replacement or cleaning, thereby reducing environmental pollution to a certain extent.

[0048] The preparation and application of the coating system follow environmental protection principles, reducing the emission and waste of harmful substances.

[0049] Improving coating lifespan: By optimizing the composition and preparation process of the coating, the weather resistance, salt spray resistance and corrosion resistance of the coating are improved, thereby extending the service life of the coating. This not only reduces maintenance costs but also improves the safety and reliability of marine biological facilities.

[0050] The unique molecular structure of polysiloxane resin gives it extremely low surface energy. This low surface energy effectively repels moisture and mucus secreted by marine organisms, making it difficult for them to find stable attachment points on the coating surface. Simultaneously, the low surface energy of silicone fluorine acts as a crucial antifouling agent in the coating, forming a thin antibacterial layer on the outer surface, further inhibiting the growth and reproduction of marine organisms. Furthermore, the powdery form of silicone fluorine low surface energy facilitates its uniform distribution within the coating, improving the consistency and durability of the antifouling effect. The anti-rust epoxy primer, as the first layer of the coating system, plays a vital basic protective role. Its epoxy resin components provide excellent adhesion and corrosion resistance, allowing it to adhere tightly to the metal substrate surface, forming a... The addition of iron oxide red forms a robust protective layer, further enhancing the primer's rust-preventing properties and effectively preventing metal substrates from rusting due to seawater corrosion. This reduces the adhesion of marine organisms caused by rust. Meanwhile, the additives (dispersants, defoamers, and anti-settling agents) in the primer play a crucial role in the preparation process. Dispersants ensure uniform dispersion of pigments and resins, preventing agglomeration; defoamers eliminate air bubbles in the coating, ensuring the smoothness and evenness of the coating; and anti-settling agents prevent the settling of pigments and fillers, ensuring the stability and effectiveness of the coating. The synergistic effect of these additives gives the rust-preventive epoxy primer excellent application and protective properties. The polysiloxane bonding primer, as the second layer of the coating system, exhibits particularly outstanding antifouling properties. Polysiloxane resin, as its main component, possesses extremely low surface energy and excellent hydrophobicity. This makes the coating surface less susceptible to wetting and adhesion by the mucus secreted by marine organisms. Furthermore, polysiloxane resin exhibits good elasticity and weather resistance, adapting to temperature variations and mechanical stresses in the seawater environment, thus maintaining the stability and durability of the coating. The low surface energy siloxane particles have a particle size between 100 and 200 μm, a size range that allows for uniform distribution within the coating and maintains good release performance. Simultaneously, the powdered low surface energy siloxane particles are easier to mix evenly with the coating, avoiding agglomeration and sedimentation. In addition to the individual effects of the two coating layers, this marine bio-coating system further enhances its antifouling performance through the synergistic effect of a comprehensive antifouling mechanism. The excellent adhesion and corrosion resistance of the anti-rust epoxy primer provide a solid foundation for the polysiloxane bonding primer; while the low surface energy, hydrophobicity, and antifouling agent properties of the polysiloxane bonding primer together constitute a powerful antifouling barrier.

[0051] In addition, the preparation process of the coating system also has an important impact on its antifouling performance. During the preparation process, by precisely controlling the proportion and mixing method of each component, the uniformity and stability of the coating are ensured, so that the coating can adhere tightly to the surface of the metal substrate and form a continuous, defect-free protective layer.

[0052] In summary, this marine bio-coating system effectively prevents the adsorption and growth of marine organisms through the synergistic effect of the basic protection of the anti-rust epoxy primer, the antifouling properties of the polysiloxane bonding primer, and the integrated antifouling mechanism. This coating system not only possesses excellent protective performance and durability but also adapts to various complex marine environments, providing comprehensive and reliable protection for marine engineering structures.

[0053] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A marine bio-coating system, characterized in that, The application relates to a rust-proof epoxy primer and a polysiloxane connecting primer. The rust-proof epoxy primer is composed of the following components: 20% of epoxy resin, 15% of rust-proof pigment, 15% of auxiliary agent, 30% of solvent and 20% of curing agent. The polysiloxane connecting primer is composed of the following components: 30% of polysiloxane resin, 10% of rust-proof pigment, 15% of auxiliary agent, 30% of solvent, 10% of curing agent and 5% of antifouling agent. The auxiliary agent is composed of dispersant, defoaming agent and anti-settling agent. The curing agent is added in three times.

2. A marine bio-coating system according to claim 1, wherein, The antifouling agent is a silicon-fluorine low-surface-energy antifouling agent.

3. A marine bio-coating system according to claim 1, wherein, The rust-proof pigment is composed of iron oxide red.

4. The marine bio-coating system of claim 1, wherein, The dispersant is a stearic acid amide dispersant, the defoaming agent is a conventional water-based defoaming agent, and the anti-settling agent is composed of fumed silica.

5. A marine bio-coating system according to claim 2, wherein, The particle size of the silicon-fluorine low-surface-energy antifouling agent is between 100 and 200 mu m.

6. The marine bio-coating system of claim 1, wherein, The curing agent is an amidoamine.

7. A marine bio-coating system according to claim 2, wherein, The silicon-fluorine low-surface-energy antifouling agent is uniformly sprayed on the surface of the mixture.

8. The marine bio-coating system of claim 1, wherein, The preparation method of the rust-proof epoxy primer comprises the following steps: uniformly mixing prepared epoxy resin, rust-proof pigment, dispersant, defoaming agent and anti-settling agent to form pigment paste, adding solvent in the pigment paste, uniformly stirring to form primer solution, finally adding curing agent, fully stirring to ensure uniform dispersion of all components, and finally grinding and dispersing to reach the required fineness and uniformity. The preparation method of the polysiloxane connecting primer comprises the following steps: uniformly mixing prepared polysiloxane resin, rust-proof pigment, dispersant, defoaming agent and anti-settling agent to form pigment paste, adding solvent in the pigment paste, uniformly stirring to form primer solution, adding powder silicon-fluorine low-surface-energy antifouling agent to ensure uniform dispersion in the primer solution, finally adding curing agent, fully stirring to ensure uniform dispersion of all components, and finally grinding and dispersing to reach the required fineness and uniformity.

Images