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CN-121975434-A - Antifouling protective layer for inhibiting biological adhesion on surface of offshore wind power foundation and preparation method thereof

CN121975434ACN 121975434 ACN121975434 ACN 121975434ACN-121975434-A

Abstract

The embodiment of the invention relates to the field of marine antifouling paint and discloses an antifouling protective layer for inhibiting the adhesion of organisms on the surface of a wind power foundation at sea and a preparation method thereof, wherein the method comprises the following steps of firstly, mixing and dispersing epoxy modified polydimethylsiloxane, perfluoropolyether, gamma- (2, 3-glycidoxy) propyl trimethoxysilane and a biological micro-environment responsive controlled release carrier to obtain a main agent of the antifouling paint; and then uniformly mixing the main agent and the polyamide curing agent, coating the mixture on the surface of a substrate, and curing the mixture to form a film, wherein the controlled release carrier takes the amination modified mesoporous silica as a framework, and polyethylene glycol is loaded in the controlled release carrier. The invention obviously improves the utilization efficiency of the anti-fouling agent and the effective anti-fouling service life of the coating, has excellent fouling and shedding performance, does not contain biocide, and is friendly to the ocean environment.

Inventors

  • ZHU YABO
  • Zhu Binsha
  • TIAN XIAOXUAN
  • LOU ZHENGJI
  • ZHANG XINGYU
  • XU BOWEI
  • SUN HAONAN
  • LI WEI
  • TIAN FENG
  • SUN QI
  • WANG JUNWEI
  • CHEN SHENGGUANG
  • HUANG JIONG
  • ZENG YUHUI
  • XU LONGBIN

Assignees

  • 华能广东汕头海上风电有限责任公司
  • 西安热工研究院有限公司

Dates

Publication Date
20260505
Application Date
20260113

Claims (10)

  1. 1. The preparation method of the antifouling protective layer for inhibiting the biological adhesion on the surface of the offshore wind power foundation is characterized by comprising the following steps of: s1, preparing a main agent of the antifouling paint, wherein the main agent comprises the following raw material components in parts by mass: 45-60 parts of epoxy modified polydimethylsiloxane; 3-10 parts of perfluoropolyether; 1-3 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane; 5-15 parts of biological microenvironment responsive controlled release carrier; Grafting aminopropyl triethoxysilane onto the surface of a mesoporous silica molecular sieve to obtain an amination modified mesoporous silica molecular sieve, and then loading polyethylene glycol into a pore canal of the amination modified mesoporous silica molecular sieve; s2, uniformly mixing the main agent of the antifouling paint prepared in the step S1 with a polyamide curing agent, coating the mixture on the surface of a substrate, and curing the mixture to form a film.
  2. 2. The method for preparing the antifouling protective layer for inhibiting the adhesion of organisms on the surface of a basic offshore wind power system according to claim 1, wherein the mesoporous silica molecular sieve is SBA-15, the average pore diameter of the mesoporous silica molecular sieve is 6 nm-10 nm, and the specific surface area of the mesoporous silica molecular sieve is 500 m 2 /g～700m 2 /g.
  3. 3. The method for preparing an antifouling protective layer for inhibiting fouling of a wind power foundation surface according to claim 1, wherein the polyethylene glycol has a number average molecular weight of 3000g/mol to 5000g/mol.
  4. 4. A method of producing an antifouling protective layer for inhibiting biofouling of a wind power foundation surface at sea according to any one of claims 1 to 3, wherein the epoxy equivalent of the epoxy-modified polydimethylsiloxane is 800 g to 1200g/eq and the dynamic viscosity at 25 ℃ is 5000mPa s to 8000mPa s.
  5. 5. The method for preparing an antifouling protective layer for inhibiting biological adhesion on a basic surface of offshore wind power according to any one of claims 1 to 3, wherein the mass fraction of the polydimethylsiloxane chain segments in the epoxy modified polydimethylsiloxane is 30% -50% of the total mass.
  6. 6. A method of producing an antifouling protective layer against fouling of the surface of a wind power offshore foundation according to any of claims 1 to 3, wherein the perfluoropolyether has a dynamic viscosity of 100 mPa-s to 300 mPa-s at 25 ℃ and an average molecular weight of 2000 g/mol to 4000g/mol.
  7. 7. The method for preparing the antifouling protective layer for inhibiting biological adhesion on the basic surface of offshore wind power according to any one of claims 1 to 3, wherein in the step S1, the main agent of the antifouling paint is prepared by premixing epoxy modified polydimethylsiloxane, perfluoropolyether and gamma- (2, 3-glycidoxy) propyl trimethoxysilane, adding the biological microenvironment-responsive controlled release carrier under stirring, and dispersing by high-speed shearing.
  8. 8. The method for preparing an antifouling protective layer for inhibiting fouling on a wind power foundation surface according to claim 7, wherein the high-speed shearing dispersion speed is 20000rpm to 3000rpm, and the dispersion time is 30min to 60min.
  9. 9. A method of producing an antifouling protective layer for inhibiting biofouling on a foundation surface of offshore wind power according to any one of claims 1 to 3, wherein the polyamide curing agent has an amine value of 200 mgKOH/g to 250mgKOH/g.
  10. 10. An antifouling protective layer for inhibiting the adhesion of organisms to the surface of the foundation of offshore wind power, characterized in that it is prepared by the preparation method according to any one of claims 1 to 9.

Description

Antifouling protective layer for inhibiting biological adhesion on surface of offshore wind power foundation and preparation method thereof Technical Field The embodiment of the invention relates to the technical field of marine antifouling paint, in particular to an antifouling protective layer for inhibiting the adhesion of organisms on the surface of a wind power foundation at sea and a preparation method thereof. Background Offshore wind power is an important role in global energy structure transformation as a clean energy source. The offshore wind power foundation is used as a key structure for supporting the wind power generator set, and is soaked in the marine environment for a long time, so that the problem of serious biological adhesion is faced. Attachment, growth and accumulation of marine organisms (including bacteria, algae, barnacles, etc.) on the surface of structures can significantly increase the hydrodynamic load and corrosion rate of the structure, severely affecting its safety and service life, and leading to a dramatic rise in the later operating and maintenance costs. Therefore, applying the long-acting anti-fouling protection layer on the surface of the offshore wind power foundation is a necessary technical means for guaranteeing safe and stable operation of the offshore wind power foundation. At present, antifouling technologies applied to marine structures are mainly divided into biocidal-type coatings and biocidal-free fouling-release coatings. Conventional antifouling coatings kill attached fouling organisms by releasing toxic compounds such as copper, cuprous oxide or organotin, but the sustained release of these biocides causes irreversible damage to the marine ecosystem, and their use has been limited by increasingly stringent regulations. For this reason, environmentally friendly fouling release coatings are a hotspot for research and application. The coating mainly utilizes materials such as polydimethylsiloxane or fluorine-containing polymer to construct a lubrication interface with low surface energy, and reduces the adhesion strength of fouling organisms on the surface of the coating through physical action, so that the fouling organisms are easy to fall off under the action of external forces such as water flow impact and the like. However, the mechanism of action of such coatings is passive, which cannot fundamentally prevent the initial links of biofouling, i.e. adsorption of microscopic fouling by proteins, bacteria etc. and formation of biofilms. Once a biofilm forms on the surface of the coating, the original surface properties are changed, and instead, favorable conditions are provided for the attachment of large fouling organisms. To overcome this drawback, some solutions have attempted to introduce non-biocidal anti-fouling agents (such as polyethylene glycol) into the coating system, by which slow release inhibits the formation of biofilms. However, existing slow release systems typically release the anti-fouling agent at a relatively constant rate, which release behavior is not compatible with the actual degree of fouling threat. In the absence of bioadhesion threats, sustained release of the anti-fouling agent is an ineffective consumer, and in the event of dense bioadhesion, the release rate may be insufficient to form effective inhibition. This non-responsive release pattern results in inefficient use of the anti-fouling agent and makes it difficult to achieve effective protection for long periods. Disclosure of Invention The embodiment of the invention aims at solving at least one of the technical problems in the prior art and provides an antifouling protective layer for inhibiting the adhesion of organisms on the surface of an offshore wind power foundation and a preparation method thereof. In a first aspect, an embodiment of the present invention provides a method for preparing an anti-fouling protection layer for inhibiting biological adhesion on a surface of an offshore wind power foundation, including the following steps: s1, preparing a main agent of the antifouling paint, wherein the main agent comprises the following raw material components in parts by mass: 45-60 parts of epoxy modified polydimethylsiloxane; 3-10 parts of perfluoropolyether; 1-3 parts of gamma- (2, 3-glycidoxy) propyl trimethoxy silane; 5-15 parts of biological microenvironment responsive controlled release carrier; Grafting aminopropyl triethoxysilane onto the surface of a mesoporous silica molecular sieve to obtain an amination modified mesoporous silica molecular sieve, and then loading polyethylene glycol into a pore canal of the amination modified mesoporous silica molecular sieve; s2, uniformly mixing the main agent of the antifouling paint prepared in the step S1 with a polyamide curing agent, coating the mixture on the surface of a substrate, and curing the mixture to form a film. By adopting the technical scheme, the multi-stage intelligent antifouling system is constructe