Preparation process and application of underwater high-adhesion coating

Abstract

In recent years, the aquaculture industry and the ocean ship industry develop rapidly, the requirements for materials such as ships, underwater equipment, fishponds and fishing gears are higher and higher, and the requirements for the performance of the materials are higher and higher. The aquatic product equipment needs to be soaked in water throughout the year, and the requirements for corrosion resistance and adhesion of materials of the aquatic product equipment are high; and meanwhile, higher requirements on the antifouling and self-cleaning capabilities of the material are also put forward. A mainstream super-amphiphobic material taking organosilane as a coupling agent is strict in construction condition, needs to be carried out at specific temperature and humidity, is relatively high in cost, and is not beneficial to sustainable recovery development due to lack of reprocessing or recovery capability. According to the super-amphiphobic composite material for preparing the primer by using the zirconate as the coupling agent, provided by the invention, the adhesion of a coating, especially metal, can be effectively enhanced, the corrosion resistance is remarkably improved, meanwhile, the cost is reduced, and the economy of fishermen engaged in marine aquatic products and even the aquaculture industry is improved.

Description

TECHNICAL FIELD

[0001] The present technology belongs to the technical field of coating paint, and relates to the application of a super-amphiphobic composite bactericidal coating containing a zirconate coupling agent primer in the related aquaculture and marine ship industries. TECHNICAL BACKGROUND

[0002] Compared with super-hydrophobic coatings, super-amphiphobic coatings have a wider range of applications. Super-amphiphobic materials have a textured structure and low surface energy, and the surface thereof can realize the Cassie state of a liquid with low surface tension on the surface, which endows the surface with excellent self-cleaning and antifouling properties, and the adhesion of bacteria is extremely low, so that the super-amphiphobic material has outstanding self-cleaning, antifouling, corrosion resistance and hydrophobic and oleophobic properties, and has a wide application prospect in the fields of marine ships, underwater equipment and aquaculture, and has been widely used in self-cleaning and antifouling applications. Transparent super-amphiphobic materials can be applied to substrates of different materials and shapes, such as fabrics, wood, plastics (polypropylene), ceramics and metals (aluminum). However, due to the inherent paradox between surface roughness and the realization of super-amphiphobicity and optical transparency, it is still a great challenge to mass-produce highly transparent super-amphiphobic materials.

[0003] Super-amphiphobic coatings are often made with organosilane as a coupling agent to make a primer, but the chemical corrosion resistance thereof is relatively poor, and the construction conditions are strict, and need to be carried out under specific temperature and humidity, and the cost is also relatively high, and meanwhile, the super-amphiphobic coating also lacks reprocessing or recycling ability, which is not conducive to sustainable recycling development. Zirconate is a promising adhesion promoter, although it has not achieved the widespread success of silane coupling agents, but through its properties as an excellent wetting agent and the ability to design molecules with dual organic and inorganic functions, it can play a role as an adhesion promoter. Especially on metal surfaces, it has unique reactivity. At the same time, zirconate also allows a higher filler content of particulate matter to improve performance or reduce system costs without negatively affecting viscosity. In addition, research has shown that it can improve the adhesion strength to halogenated hydrocarbon surfaces and improve hydrolytic stability. However, it is mainly used for adhesion and protection of daily metal equipment, and has not been similarly expanded in the field of marine ships and fishing gear.

[0004] The adhesion of the coating can be effectively enhanced, the corrosion resistance can be significantly improved, the cost can be reduced, and the fishermen engaged in marine aquaculture and even the aquaculture industry can be economically improved. SUMMARY

[0005] The present application aims to solve one of the problems of underwater adhesion of coatings in the related aquaculture and marine ship industries. To this end, the present application proposes a preparation process of an underwater high-adhesion performance coating and its application.

[0006] The technical scheme of the present application is: effectively combine the super-elastic super-amphiphobic surface paint layer and zirconate material, use the anti-pollution and corrosion resistance, hydrophobic and oleophobic and strong adhesion performance of the two to form an underwater high adhesion performance coating.

[0007] The main application of the project is: related to aquaculture and marine ship industry: using this material can effectively reduce the pollution to the water area, and its self-cleaning performance has a cleaning effect on the water body, and the hydrophobic and oleophobic and corrosion resistance performance can effectively reduce the loss of materials.

[0008] Compared with the existing technology using organosilane as coupling agent, the project relies on the unique reactivity of zirconate on metal surface, which has very high performance on metal ships and metal fishing gear fish ponds, and the cost is relatively low, which can effectively reduce economic loss and improve economic benefit. DETAILED DESCRIPTION

[0009] The specific scheme of the present technology will be further illustrated below in combination with specific examples The present technology is an underwater high adhesion performance coating, which combines super-elastic super-amphiphobic surface paint layer and Prussian blue nanomaterial.

[0010] The preparation method of the underwater high adhesion composite coating used is: The performance and preparation method of the super-elastic super-amphiphobic surface paint layer can refer to the literature: Fabrication of Stretchable Superamphiphobic Surfaces with Deformation-Induced Rearrangeable Structures (DOI: 10.1002 / adma.202107901), which uses a simple method of low-pressure spraying and fixes the silicon nanofilament to the pre-stretched elastic substrate with polydimethylsiloxane as the adhesive layer, to prepare a super-amphiphobic surface with relatively loose distribution of micro-nano structure and resistance to super-high tensile deformation.

[0011] The performance of zirconate material can refer to the patent: Adhesion-promoting composition containing organotitanate / zirconate and method of use and process.

[0012] The main preparation method refers to two previous inventions, and is improved through experiments. The most suitable indicators for the conditions of aquaculture and metal marine ships and fishing gear are found.

Claims

1. Super-amphiphobic coating has strong adhesion, high anti-fouling, self-cleaning and hydrophobic and oleophobic properties, often uses organosilane as coupling agent, but its chemical corrosion resistance is relatively poor, and the construction conditions are strict, which need to be carried out under specific temperature and humidity, and the cost is also relatively high. An underwater high adhesion performance coating, characterized by The super-amphiphobic coating is effectively combined with zirconate, so that the coating can maintain high adhesion performance in water.

2. An underwater high adhesion performance coating according to claim 1, characterized in that, The super-amphiphobic coating uses zirconate as a coupling agent to make a primer.

3. The underwater high adhesion performance coating of claim 1, wherein, The super-amphiphobic coating uses zirconium fluoride as a coupling agent to make a primer.

4. The underwater high adhesion performance coating of claim 1, wherein, The super-amphiphobic coating forms a dense nano-conversion film on the surface of the substrate, has strong barrier property, and has good adhesion with the subsequent organic coating, can significantly improve the corrosion resistance of the coating, and prolong the corrosion resistance time.

5. The underwater high adhesion performance coating of claim 1, wherein, The super-amphiphobic coating is mainly applied in related aquaculture and marine ship industry, mainly including fish ponds, fishing gear, ships and the like, especially the adhesion on metal materials. Helps to improve the underwater corrosion resistance and prolong the corrosion resistance time.