Paint anti-fouling agent and its preparation method
An antifouling agent and coating technology, applied in the coating and other directions, can solve the problems of low cuprous oxide efficiency, difficult use of antifouling coatings, easy release of cuprous oxide, etc., to save cuprous oxide, good miscibility, Easy release speed effect
Inactive Publication Date: 2006-01-18
OCEAN UNIV OF CHINA
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AI Technical Summary
Problems solved by technology
Due to the large specificity and strong hydrophilicity of cuprous oxide, these coatings are prone to sedimentation and cuprous oxide is easy to release into water bodies, resulting in difficulties in the use of antifouling coatings and low efficiency of cuprous oxide.
Method used
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Embodiment Construction
[0007] When preparing this antifouling agent, first weigh out 100g of absolute ethanol and 4g of vinyltrimethoxysilane, stir thoroughly to obtain a mixture, then weigh out 40g of cuprous oxide, and add the cuprous oxide to the above mixture under high-speed stirring. Copper, centrifuged to remove ethanol, dried at 60-110°C under nitrogen protection, and ground to obtain the antifouling agent of the present invention.
[0008] In this embodiment, vinyltrimethoxysilane can also be replaced by vinyltriethoxysilane, for example, 4g of vinyltrimethoxysilane can be replaced by 4g of vinyltriethoxysilane. When preparing the antifouling agent of the present invention, the weight ratio of absolute ethanol to cuprous oxide is: 10-200:20-60.
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A paint antifouling agent comprising cuprous oxide, ethyltrimethoxysilane, with the weight ratio of 20-80:0.1-10. The antifouling agent is prepared through the steps of, mixing absolute ethyl alcohol and ethyltrimethoxysilane, charging cuprous oxide into the mixture while stirring, removing alcohol by centrifuging, drying at 60-110 deg. C with nitrogen protection, the weight ratio of absolute ethyl alcohol and cuprous oxide is 10-200:20-60. The antifouling agent has good lipophilicity.
Description
technical field [0001] The invention relates to an antifouling agent, in particular to a coating antifouling agent and a preparation method thereof. Background technique [0002] The surface of nets, hulls, buoys, piers, piers and other devices in contact with seawater is often fouled due to the attachment of marine organisms, increasing surface friction resistance and accelerating corrosion. At present, the best way to solve marine biofouling is to paint with antifouling agent. Copolymers of tributyltin methacrylate and methyl methacrylate and cuprous oxide (Cu 2 O) the composition is used as a kind of antifouling paint, is coated on surfaces such as the bottom of a ship, and can effectively prevent the harm of marine fouling organisms. The copolymer in this antifouling paint will be hydrolyzed in seawater, releasing tributyltin (TBT), which plays an antifouling role. But TBT harms the marine ecological environment and marine aquaculture industry, such as TBT causes sex ...
Claims
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IPC IPC(8): C09D7/12
Inventor 于良民徐焕志张志明
Owner OCEAN UNIV OF CHINA