KR20120088481A - Additive for antifouling paint and antifouling paint containing the said additive - Google Patents

Abstract

PURPOSE: An additive for antifouling paint and antifouling paint containing the additive are provided to reduce fuel consumed by ships and attachment of sea creatures and to extend attachment period of paint to ship bottom or fishing nets. CONSTITUTION: An additive for antifouling paint and antifouling paint containing the additive comprises a mixture including phosphate mineral powder which is a lanthane-based material which emits anions all the time and silicate mineral powder which emits plain infrared ray of teraHertz waves. Each average particle diameter of the silicate pulverized body emitting the plain infrared ray and the phosphate minerals pulverized body emitting the negative ion is 2-10 microns. The content of the phosphate minerals pulverized body is 40-50 weight% and the content of the silicate pulverized body is 60-40 weight%.

Description

Antifouling paint additives and antifouling paints containing the additives {ADDITIVE FOR ANTIFOULING PAINT AND ANTIFOULING PAINT CONTAINING THE SAID ADDITIVE}

The present invention relates to an antifouling paint additive and an antifouling paint containing the additive. Specifically, marine life is attached to sea bottoms, underwater structures, aquaculture nets, fishing nets, buoys, industrial aquatic facilities, etc., seaweeds are attached, and various antifouling paints are made of various materials such as steel wires, FRP ships and wooden ships. The present invention relates to a possible antifouling paint additive and an antifouling paint containing the additive.

Conventionally, antifouling paints containing organic tin or rosin have been used for the purpose of removing marine organisms attached to ships, underwater structures, fishing nets, or the like, or preventing corrosion of ships or lowering the speed of navigation of ships. Moreover, the coating material containing organic tin and rosin was also used in aquaculture nets.

For this reason, the use of organic tin or rosin-containing paints causes the problem of changing the ecology of marine organisms. Therefore, since the late 1980s, the use of antifouling paints in which organic tin and rosin are mixed is independently regulated. In 1999, an agreement was reached at the headquarters of the International Maritime Organization (IMO) in London, and in 2003 a total ban on ships.

One of the problems of ships is the damage caused by marine life attached to the bottom. Seaweed, shellfish, etc. attached to the bottom of the ship become a great resistance of the sailing ship, and a large difference occurs even if the ship with no attachment on the bottom and the ship with the attachment have the same output. As a result, damages such as an increase in fuel cost and an increase in the load on the engine are caused.

As a countermeasure to these damages, studies have been made in which deposits are not easily adhered, and recently, the technical development of the paint has progressed, and there is a hydrolytic paint (Patent Document 1) in which the paint itself melts, or a self-polishing paint which is peeled off little by little. . Moreover, although some additives are mixed in paint similarly to this invention, even if these special paints are used, the adherents of marine life to a ship bottom, a marine structure, a fishing net, etc. are not fully removed. Moreover, this effect is also not sufficient, and it is one cause of marine pollution.

In addition, since the effect does not continue for a long time, the period of reapplying the coating due to peeling, consumption, etc. of the paint is short. Once every six months, large ships repaint once a year. If it is a large ship, simply removing the attachment is a big deal.

Japanese Unexamined Patent Publication No. 2007-244991

It is no exaggeration to say that ships used in various parts of the world are supporting the global economy in terms of logistics. There are tankers, cargo ships and passenger ships. At the same time, there is a problem of adhesion by clam shells and seaweeds, which adhere to the hull.

The following bottom paints are provided for the purpose of reducing adhesion of marine organisms to the bottom and the like. (1) self-polishing paint and (2) hydrolysis paint (for example, patent document 1).

(1) self-polishing paint (organic silicon-containing copolymer)

The self-polishing paint is a method in which the paint is peeled off and falls with the deposit using the propulsion force of the boat. However, when used for wooden ships or the like, since the bottom is not flat, there is a difficulty in that the paint hardly peels off and the adherent does not fall off.

(2) hydrolysis paint

In the past, paints containing tin-containing polymers as antifouling components have been used. Currently, tin is not used. In the hydrolyzable paint, the paint itself is hydrolyzed with seawater, the organic compound, and the like are eluted, the paint vehicle is solubilized, and the blended antifouling agent is eluted and dropped into the sea together with deposits. However, it is applied to the FRP wire, but cannot be used on the aluminum wire because it causes a chemical reaction with aluminum. Because of the reaction with seawater, the effects in freshwater cannot be hoped for.

(3) Moreover, in the pipe | colum | substrate which apply | coated a hydrolyzable coating material mainly to the seawater, there exists a marine organism adhesion prevention tube (patent document 1) in which the hydrolyzable coating material was apply | coated to the inner surface of a tube main body.

Although the invention of patent document 1 can aim at prevention of attachment of new marine life without polluting a marine environment, it cannot apply the invention of patent document 1 to a ship bottom.

In the method of applying the self-polishing paint and the hydrolyzable paint to the bottom of the ship, the adhesion time of the paint is short, about 6 months, and each paint maker is devoted to the development of long-term adhesion. I'm not losing.

This invention is made | formed in view of the said point, The objective is to reduce the attachment of marine life to a ship bottom, a marine structure, a fishing net, etc., and to reduce the fuel consumed by a ship, etc. It is an object of the present invention to provide a bottom coating and a paint additive in which the connection period of the paint adhesion period for an underwater structure, aquaculture net, fishing net, buoy, industrial water installation, etc. is prolonged, and marine pollution does not occur.

The antifouling paint additive according to the present invention and the antifouling paint containing the additive are mainly composed of a mixture of a phosphate mineral powder, which is a lanthanide substance which always emits negative ions, and a silicate mineral powder which emits terrestrial wave ultra-ultraviolet rays. It is characterized by.

The antifouling coating additive according to claim 1 of the present invention and the antifouling coating containing the additive include a mixture of a lanthanide ore powder that always emits negative ions and a silicate ore powder that emits ultra-near infrared rays. It is characterized by.

The antifouling paint additive according to claim 1 or 2, and the antifouling paint containing the additive, the average particle diameter of each of the phosphate mineral powder that emits negative ions and the silicate mineral powder that emits ultra-infrared rays is 2? It is characterized by a 10 μm.

As for the antifouling paint additive of Claim 1, 2 or 3, and the antifouling paint containing the additive, the mixing ratio of the phosphate mineral powder which always emits negative ions, and the silicate mineral powder which emits ultra-infrared rays is a phosphate mineral powder. 40? 50 weight%, and the silicate mineral powder of ultra-ultraviolet emission is 60? It is characterized by 40 weight%.

Antifouling paints containing additives for antifouling paints applied to ships, offshore structures, aquaculture fishing nets, buoys, industrial aquatic installations, etc. are powders of substances that always emit negative ions and powders of terahertz pine meadow infrared rays. It is based on.

The average particle diameter of each said powder is 2? As an additive for antifouling paints having a thickness of 10 µm, phosphate minerals in rare earths which always emit negative ions and terahertz waves have a wavelength of 15? The mixing ratio of the silicate mineral powder that emits ultra-fine infrared rays of 1,000 µm is 40% by weight of the powder that emits negative ions. 60% by weight of silicate mineral powder of terahertzpine ultra-infrared emission with respect to 60% weight? It is an additive for antifouling paints which is 40% weight%.

The phosphate mineral in the rare earth of always-negative ion emission described above is selected as an Australian phosphate mineral, and the phosphate mineral is mixed with the phosphate mineral powder and a silicate mineral powder of ultra-ultraviolet emission emitting terahertz waves. 5 wt% of the antifouling paint additive based on 100 wt% of the coating weight. It is characterized by mixing 20 weight%.

The silicate mineral of terahertz wave emission is an ore taken from the foothills of Kyushu Takachiho in Japan. By emitting a wavelength of 1,000 mu m, it has become a hot topic among experts. Previously, there were no measuring instruments measuring terahertz waves, and now terahertz waves can be seen.

As for the component containing the silicate mineral which emits terahertz waves, the elemental component of the result measured using the fluorescence X-ray analyzer of System 3270E of Rigaku Electric Co., Ltd. was Si, Al, K, Fe, Ca, Na, Zr, Mg. , Ti, Mn, P, Sr, Cl, Y, S, Cr, Rb, Zn, Pb.

Representative examples of phosphate minerals which always emit negative ions are the phosphate minerals of cerium and lanthanum. The component containing the phosphate mineral used by this invention is shown. F 9.75%, Mg 1.89%, Al ₂ O ₃ 0.58%, SiO ₂ 4.20%, P ₄ O ₁₀ 1.91%, SO ₃ 3.62%, Cl 0.89%, K 1.46%, Ca 2.84%, Kr 0.01%, Sr 0.96 %, BaO 3.62%, La 20.17%, Ce 25.10%, Pr 2.64%, Nd 6.48%, Sm 0.60%, Th 0.12%, B 1.41%, Si 3.56%, Na 1.60%, Mn 2.82%, Fe 0.56%, Al 0.43%, Cr 0.53%, Ti 1.52%, Li 0.73%.

The fluorescent X-ray apparatus and the containing component concentration measuring apparatus were measured using the apparatus of Simultix 12 of Rigaku Corporation.

The antifouling paint additive obtained by mixing the said mineral powder is 5? The mixture is added to the paint in a proportion of 20% by weight, stirred, and applied to a ship bottom, an underwater structure, a fishing net or the like.

When the additive for antifouling paint according to the present invention is added too much, the adhesiveness with the paint deteriorates, so that about 10% by weight to 100% by weight of the paint is preferable. On the contrary, when too small, the effect intended in the present invention will not be obtained.

The thickness of the coating film at the time of apply | coating the antifouling paint containing the antifouling paint additive which concerns on this invention to a ship etc. is suitably apply | coated to the thickness to which the effect of this invention is acquired.

As can be seen from the above description, the present invention provides a phosphate powder that emits negative ions at all times and a wavelength of terahertz waves of 4? As an additive for antifouling paints, incorporating silicate mineral powder that emits 1000 μm of ultra-short infrared rays, it is possible to reduce the adherence of marine organisms to the bottom, marine structures, fishing nets, etc., and to reduce the fuel consumed by ships. In addition, it is possible to provide a bottom coating and a paint additive which can prolong the duration of the paint adhesion period to the bottom, an underwater structure, aquaculture nets, fishing nets, buoys, industrial aquatic installations, etc., and prevent marine pollution.

The terahertz wave ore used in the antifouling paint additive and the antifouling paint containing the additive according to the present invention is an ore completely different from the conventional additives or the antifouling paint, and is used as a bottom paint additive because there is no harm to marine life at all. In addition, it can be applied to underwater structures, aquaculture nets, fishing nets, buoys, industrial aquatic installations, etc., and can exhibit the said effect without regret. In other words,

(1) Significantly reduce the adhesion of organisms such as shells, seaweeds, and greens.

(2) The coating application desorption period can be significantly extended than before.

(3) The durability of the paint increases, the reapplication period from the last application to the next application is extended, and the fuel cost of the ship and the like can be saved.

(4) It is also effective in preventing pollution in seawater (saline) lakes and riversides (freshwater).

In the bottom paints currently in use, it is common to carry out reapplication of the paint once every six months or a year, but by using the antifouling paint additive and the antifouling paint containing the additive according to the present invention, We can lengthen period to to, and reduction of expense brings very big influence. Moreover, the effect is large, such as not only being able to lengthen the period until next application | coating, but also the navigation speed of a ship, etc., reducing an engine load, and reducing the damage of a hull.

Example 1

We show result of immersion proof test in Beppu bay under the presence of Ote shipyard maker of Oita. In the present Example, 10 weight part of antifouling paint additives were mixed with respect to 100 weight part of paint, and the antifouling paint was obtained. The additive used in the present Example was formed of a phosphate mineral belonging to a rare earth that always emits negative and a silicate mineral that emits terahertz waves into a powder having an average particle diameter of 5 μm, and then the amount of the mixture was 50% by weight. It is an additive obtained by mixing at 50 weight%. The components of the paint are 20% by weight of xylene, 15% by weight of lead nitrous oxide, 55% by weight of cuprous oxide, 5% by weight of 3- (3,4-dichlorophenyl) -1,1dimethylurea, 4,5-dichloro- 2-octyl-4-isothiazolin-3-one is 5% by weight.

First, six sheets of iron plate having one side of the surface of 50 cm and a thickness of 5 mm were prepared, and the contaminants of each iron plate were wiped with thinner and primed. Numbers were written on the iron plates of six bodies, and six iron plates were fixed up and down with two iron bars. The first and fourth coats were coated with ordinary bottom paint, and the second, third, fifth and sixth coats were coated with the bottom paint additive according to the present embodiment. These six sheets were suspended 3 m below the surface of the sea and observed once a month. At the time of passing six months, shells are already attached to the surface of the bottom paint that does not contain the first and fourth additives and have already hardened. Sufficient effect was maintained, and there was no adhesion of shellfish. At the time of observing the final verification 14 months after the empirical test, the shells that do not contain the 1st and 4th additives are densely attached to the shells, and the shells containing the additives have the shellfish 10 cm above the plate. To the extent that it is attached, it turned out that it can still be fully used as a bottom paint.

[Example 2]

Phosphate mineral belonging to the rare earth which always emits negative ions, and silicate which emits terahertz waves with respect to 100% by weight of synthetic resin (enamel paint) containing the weight of the bottom paint (xylene resin 20-30%) of the paint maker After forming both minerals in powder of 5 micrometers of average particle diameters, 10 weight% of the additives obtained by mixing them were mixed, and the antifouling paint was obtained. This antifouling paint was applied to the FRP wire. At the time of application | coating, the following operation | work was performed. First, the boat is raised, and then marine organisms, contaminants, and oils attached to the hull surface are scraped off with a scraper and thinner. Next, water washing is performed to remove salt from the surface and to dry. If there are irregularities on the surface of the FRP, flatten them with sandpaper or the like and coat them with a paint containing additives. At least 5 hours apart, apply again to ensure complete drying and lower the boat.

At the time when the boat was lifted 10 months after application, no adhesion of seaweed, seaweed or shells was observed on the surface of the FRP hull.

The present invention is used for the attachment of marine organisms to sea bottoms, underwater structures, aquaculture nets, fishing nets, buoys, industrial aquatic facilities, etc., attachment of seaweeds and various antifouling paints made of various materials such as steel wires, FRP ships and wooden ships. This is expected.

Claims (4)

An antifouling paint additive and an antifouling paint containing the additive comprising a mixture of a phosphate mineral powder which is a lanthanide substance which always emits negative ions and a silicate mineral powder which emits terrestrial wave's ultra-infrared rays. The method of claim 1,
An antifouling paint containing an additive for antifouling paint and an antifouling paint, comprising a mixture of a lanthanoid ore powder which always emits negative ions and a silicate ore powder which emits ultra-infrared rays. The method according to claim 1 or 2,
The average particle diameter of the phosphate mineral powder which emits negative ions and the silicate mineral powder which emits ultra-infrared rays is 2? It is 10 micrometers, The antifouling paint additive and antifouling paint containing the additive are characterized by the above-mentioned. The method according to any one of claims 1, 2 or 3,
The mixing ratio of phosphate mineral powder that always emits negative ions and silicate mineral powder that emits ultra-infrared rays is 40? 50 wt%, silicate mineral powder with ultra-violet radiation is 60? It is 40 weight%, The antifouling paint additive and antifouling paint containing the additive which are characterized by the above-mentioned.