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Method utilizing harmonic motion principle to prevent fouling caused by marine organisms

A marine biofouling, principled technology, applied to biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve problems affecting normal operation, increased times of ship docking maintenance, and increased fuel costs

Inactive Publication Date: 2016-03-09
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Biofouling leads to slow down of ship's sailing speed, increase of fuel cost, blockage of seawater pipelines, imbalance of underwater facilities, especially the damage caused by biofouling to large ships and ships is particularly serious, changing the surface of the ship's shell metal characteristics, accelerates the corrosion of steel, causes damage to the ship's piping system, affects its normal operation, increases the number of times the ship is docked for maintenance, reduces the ship's voyage rate, and shortens its service life.

Method used

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  • Method utilizing harmonic motion principle to prevent fouling caused by marine organisms

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Embodiment Construction

[0010] Such as figure 1 As shown, this method selects surface coating materials with different elastic moduli according to the sailing speed, and the harmonic action of this material occurs under the action of seawater traveling waves to form a cosine wave, where a is the harmonic wavelength and b is the harmonic wave amplitude. The body length of mussel larvae, algae larvae or barnacle larvae is L, then as long as L / 2 is greater than the value of a or b, the larvae will easily peel off under the action of harmonic motion; the frequency of the cosine wave is 0.02 to 0.1 Hz, do not give the larvae enough time to stay, so as to achieve the function of preventing attachment.

[0011] Assuming that the larva is round and the body length is L, then as long as L / 2 is greater than the value of a or b, the larva will peel off under the action of harmonic movement, thereby achieving the function of preventing attachment.

[0012] For barnacle larvae with a body length of 0.7 mm, the ...

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Abstract

The invention discloses a method utilizing a harmonic motion principle to prevent fouling caused by marine organisms. According to the method, a layer of elastic material is painted on the surface of equipment in water, the elastic material can carry out harmonic motions under the effect of travelling waves in water, thus cosine waves are generated, wherein a represents a wavelength of harmonic motion wave, b represents an amplitude of harmonic motion, the length of larvae of mussel, alga, or barnacle is represented by L, if 1 / 2L is more than a or b, the larvae can be easily peeled off under the effect of harmonic motion, the frequency of cosine wave is 0.02 to 0.1 Hz, no time is left for the larvae to stay, and thus the adhesion of larvae is avoided.

Description

technical field [0001] The invention relates to a method for preventing marine biofouling, in particular to a method for preventing biofouling under the excitation of a fluid medium with a harmonic principle. Compared with other antifouling methods, the method is green and long-lasting , broad spectrum and other characteristics. Background technique [0002] The phenomenon that microorganisms, plants and animals in the ocean attach to and adversely affect objects immersed in seawater such as ships, submarines, drilling equipment, instruments and meters, and aquaculture cages is called biofouling. Biofouling leads to slow down of ship's sailing speed, increase of fuel cost, blockage of seawater pipelines, imbalance of underwater facilities, especially the damage caused by biofouling to large ships and ships is particularly serious, changing the surface of the ship's shell metal characteristics, accelerate the corrosion of steel, cause damage to the ship's piping system, affe...

Claims

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Application Information

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IPC IPC(8): C09D5/16
CPCC09D5/1681B63B59/04C09D5/16
Inventor 田丽梅金娥可庆朋商延庚李因武孙航刘燕任露泉
Owner JILIN UNIV