Preparation method of ocean engineering coating for preventing biological adhesion
A bio-fouling and marine engineering technology, applied in anti-fouling/underwater coatings, biocide-containing paints, coatings, etc., can solve marine concrete structure fouling, economic loss, marine concrete structure safety and durability hazards and other problems, to achieve the effect of good aging resistance, simple process and strong anti-biological adhesion.
Inactive Publication Date: 2018-05-08
TAIZHOU BRANCH ZHEJIANG-CALIFORNIA INT NANOSYSTEMS INST
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Problems solved by technology
Due to long-term immersion, the attachment of various organisms in the ocean, such as seaweed, shellfish, molluscs, etc., causes deep damage from surface damage, resulting in serious fouling of marine concrete structures, which not only causes economic losses, but also damages marine concrete. Severe hazards to structural safety and durability
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[0015] The present invention is further described by examples below.
[0016] The preparation method that is used for marine engineering anti-biological adhesion coating among the present invention, comprises the steps:
[0017] (1) Under the stirring condition of 300r / min, add one or two mixtures of methyl orthosilicate and ethyl orthosilicate to a saturated alcohol solvent of 1 to 5 times the mass of ammonia gas; then Add water, and make the molar ratio of water and silicon be 6-10:1; after reacting at 60°C for 8 hours, remove 30% of the mass of the saturated alcohol solvent with ammonia gas added by rotary evaporation to obtain particle-type nano-dioxide Silica sol; the alcohol solvent used in the saturated alcohol solvent of ammonia is one of methanol, ethanol, and isopropanol or a combination of several of them.
[0018] (2) At a stirring rate of 800r / min, add AgNO to the particle-type nano-silica sol 3 , so that the molar ratio of Si:Ag is 1000~700:1; after aging for 2...
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The invention relates to a preparation technology for a functional coating and aims at providing a preparation method of an ocean engineering coating for preventing biological adhesion. The preparation method comprises the steps: (1) adding tetramethoxysilane or tetraethoxysilane into a saturated alcohol solvent of ammonia under stirring, and then, adding water; after reacting, removing 30% by mass of the added saturated alcohol solvent of the ammonia by rotary evaporation to obtain particle-type nano silica sol; (2) adding AgNO3 under stirring, and carrying out ageing to obtain Ag-ion-coatedcomposite silica sol; and (3) adding a catalyst for regulating a pH value under stirring, then, dropwise adding organic siloxane into the sol, and carrying out a reaction to prepare the ocean engineering coating for preventing biological adhesion. Ag ions with spectral antibacterial properties are introduced on the basis of the Ag-ion-coated modified silica sol, so that the formed inorganic systemcoating has good ageing resistance, meanwhile, the process is simple, and the ocean engineering coating is green and environmentally friendly due to the use of an Ag ion antibacterial agent and is high in biological adhesion resistance.
Description
technical field [0001] The invention relates to a preparation technology of a functional coating, in particular to a preparation method of an anti-biological adhesion coating for marine engineering. Background technique [0002] With the acceleration of the utilization of marine space, marine concrete structure projects, such as piers, breakwaters, sea airports, sea lighthouses, submarine tunnels and sea-crossing bridges, are more and more widely used. Due to long-term immersion, the attachment of various organisms in the ocean, such as seaweed, shellfish, molluscs, etc., causes deep damage from surface damage, resulting in serious fouling of marine concrete structures, which not only causes economic losses, but also damages marine concrete. Structural safety and durability pose serious hazards. [0003] Coating technology is the most commonly used effective protection technology. At present, the commonly used protective coatings such as polyurethane coating series, acrylat...
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IPC IPC(8): C09D5/14C09D183/04C09D183/06C09D7/62
CPCC09D5/14C08K3/36C08K9/10C08K2201/011C09D183/04C09D183/06
Inventor 吴春春汪海风刘杰阙永生方竹根杨辉
Owner TAIZHOU BRANCH ZHEJIANG-CALIFORNIA INT NANOSYSTEMS INST