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Slow release type biological anti-fouling paint

A biological antifouling and biological antifouling agent technology, applied in antifouling/underwater coatings, rubber derivative coatings, epoxy resin coatings, etc., can solve the problems of short life, toxicity, high cost, and improve the antifouling period , low cost, and the effect of improving the antifouling effect

Inactive Publication Date: 2008-05-28
重庆丰博科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of this invention is to provide a low-cost, environmentally friendly, slow-release biological antifouling coating, which uses plant biological extracts as antifouling components and microencapsulates it. This antifouling coating can overcome the aforementioned toxic , high cost and short lifespan

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of Vegetable Tannin Microcapsules

[0026] Preparation of water phase: add gelatin to water, heat and stir in a water bath at 70°C to dissolve, and make a gelatin solution with a concentration of 25% (w / v), adjust the pH value to about 3 with 10% (v / v) acetic acid solution, add appropriate amount of Tween -20 to make the concentration 2% (v / v), then add an appropriate amount of vegetable tannin to make the concentration 6% (w / v), stir and emulsify to obtain the water phase;

[0027] Preparation of the oil phase: add an appropriate amount of Span-80 to the soybean oil to make the concentration 4% (v / v), stir and mix at a high speed to obtain the oil phase;

[0028] Microencapsulation process: Take an appropriate amount of oil phase, emulsify and stir with a high-speed emulsifying homogenizer or an electric mixer in a water bath at 75°C for about 15 minutes, then adjust the speed of the high-speed emulsifying homogenizer or electric mixer to an appropriate spe...

Embodiment 2

[0030] Preparation of tea polyphenol microcapsules

[0031] Preparation of water phase: add gelatin to water, heat and stir in a water bath at 70°C to dissolve, and make a gelatin solution with a concentration of 25% (w / v), adjust the pH value to about 3 with 10% (v / v) acetic acid solution, add appropriate amount of Tween -20 to make the concentration 2% (v / v), then add an appropriate amount of tea polyphenols to make the concentration 6% (w / v), stir and emulsify to obtain the water phase;

[0032] Preparation of the oil phase: add an appropriate amount of Span-80 to the soybean oil to make the concentration 4% (v / v), stir and mix at a high speed to obtain the oil phase;

[0033]Microencapsulation process: Take an appropriate amount of oil phase, emulsify and stir with a high-speed emulsifying homogenizer or an electric mixer in a water bath at 75°C for about 15 minutes, then adjust the speed of the high-speed emulsifying homogenizer or electric mixer to an appropriate speed, ...

Embodiment 3～14

[0035] Table 1 Embodiment 3~14 components and weight percentage

[0036]

[0037] The antifouling coatings of the above-mentioned prepared examples 3 to 14 are evenly applied to the 45 # and hang the steel plate in simulated seawater to measure the release rate of plant tannins or tea polyphenols, the results are shown in Table 2:

[0038] Table 2 Release rate of bio-antifouling agent from coating

[0039] Release rate (μg.m-2.d-1)

[0040] 10 days

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PUM

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Abstract

The invention discloses a slow-soluble biological antifouling paint, which comprises binder resin, biological antifouling compositions, pigments, fillers, additives and solvents, wherein the biological antifouling compositions are vegetable tannin and tea polyphenols of biological extracts of plants. The vegetable tannin and the tea polyphenols are then encapsulated by employing the encapsulization technology, the encapsulated vegetable tannin and tea polyphenols are taken as the antifouling compositions, the antifouling paint of the invention is further composed by combining the binder resin, the pigments, the fillers, the additives and the solvent together with the vegetable tannin and the tea polyphenols, and the antifouling effect is achieved by the slow releasing of the vegetable tannin and the tea polyphenols from micro-capsules. The invention has the advantages that the invention coming from the biological extracts of plants is environment-friendly, the cost is low, the encapsulization technology is simple, the price of capsule materials is low and the large-scale production is easy to be achieved. Further, the invention is characterized by low surface energy, biological antifouling, long term slow releasing and environment protection, and is capable of being employed in antifouling treatment of ocean ships, ocean fixture and fittings, sewers, cable ducts, optical cable ducts and the like.

Description

technical field [0001] The invention relates to an antifouling coating, in particular to a slow-release bio-antifouling coating, in particular to using plant biological extracts, plant tannin and tea polyphenols as antifouling components, and obtaining microencapsulation through microencapsulation technology. Encapsulated plant tannins and microencapsulated tea polyphenols are used as antifouling agents to prepare low-cost, environmentally friendly, slow-release long-acting antifouling coatings. It is especially suitable for anti-fouling and anti-corrosion treatment of marine ships, fixed marine facilities, sewer pipes, optical cable and cable pipes, and oil and gas pipelines. Background technique [0002] my country has a long coastline and inland routes. A large number of ships sail in the harsh marine environment every day. The bottom part of the ship is soaked in seawater for a long time and is seriously fouled by marine fouling organisms. This greatly accelerates the c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/16C09D163/00C09D133/02C09D115/02C09D175/04C09D7/12
Inventor 王伯初梁华民袁凤伟郑超陈双扣刘玮琦
Owner 重庆丰博科技发展有限公司
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