JPH059912A - Supporting pile for floating body type ship mooring quay - Google Patents

Abstract

PURPOSE:To improve abrasion resistance and maintain the beautiful appearance by coating polyurethane resin on the external surface of a supporting pile after applying preparation treatment to form a corrosion protected layer and coating fluorocarbon resin or the like on the corrosion protected layer to form a sliding layer. CONSTITUTION:The coated face of a steel material is cleaned by shot blast or the like, and then a surface preparation layer 2 is formed on the steel material with an organic primer layer constituted. In the next step, the layer 2 is completely hardened, and polyurethane resin is coated on the layer 2 to form an anti-corrosion coated layer 3. In the next step, the layer 3 is hardened to touch, and fluorocarbon resin or silicon resin which are excellent in slidability is coated on the layer 3 before it is hardened completely to form a sliding layer 4. The formation of the layer 4 reduces the dynamic friction factor with a supporting roller, preventing the damage of the layer 3 and keeping its corrosion-resistant property and beautiful appearance for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support pile for a floating mooring shore, which has corrosion resistance and weather resistance as well as aesthetics for a long period of time and is used in port facilities and the like.

[0002]

2. Description of the Related Art Corrosion of tidal zones is a serious problem even when steel materials used as structures and piles such as oceans and harbors are exposed to severe usage environments. Therefore, as is well known, heavy-corrosion coated steel materials of polyolefin resin or thermosetting resin are widely marketed. These heavy anticorrosion coated steel materials have not only anticorrosion properties but also mechanical properties that can sufficiently withstand the impact of driftwood and the like.

However, in recent years, heavy anticorrosion coated steel has come to be used as a support pile for a floating structure on a floating mooring berth, and there is a great risk that the coating will be damaged by abrasion by a bearing roller. The mechanical strength of coating is becoming insufficient.

Therefore, in order to increase the mechanical strength, Japanese Patent Laid-Open No. Sho 63-63
As disclosed in JP-A-02-02248, there is provided a reinforced plastic composite coated steel material obtained by coating the surface of the anticorrosion coating layer with a fiber reinforced plastic.

[0005]

By the way, in recent years, heavy corrosion-resistant coated steel materials for harbor facilities and the like have recently been required to maintain aesthetics as well as long-term corrosion resistance, and when the coating is colored. There are also many. In the case of the aforementioned reinforced plastic composite coated steel material, shear stress occurs at the interface between the anticorrosion coating layer and the fiber reinforced plastic layer due to wear by the bearing roller, and the fiber reinforced plastic layer peels off, making it difficult to maintain the aesthetic appearance matching port facilities. There is a problem.

In view of the above, the present invention provides a floating mooring shore support pile having sufficient wear resistance as a supporting pile for a floating mooring shore structure and capable of maintaining an aesthetic appearance that matches port facilities and the like. It is an object.

[0007]

The present invention has solved the above-mentioned problems, and its gist is as follows.

(1) In a support pile mooring a floating mooring shore to a quay, an outer surface of the support pile is coated with a polyurethane resin after a base treatment to form an anticorrosion coating layer, and a fluorine resin is provided on the anticorrosion coating layer. A floating-type mooring shore support pile, characterized by being coated with one of the sliding layers of a silicon-based resin.

(2) In a supporting pile mooring a floating mooring shore to a quay, an outer surface of the supporting pile is coated with a polyolefin resin or a polyurethane resin after a surface treatment to form an anticorrosion coating layer, and the anticorrosion coating layer is uncured. Occasionally, inorganic fibers or organic fibers are planted on the anticorrosion coating layer, and then a vinyl ester resin, polyester resin, or epoxy resin protective layer containing the inorganic fibers or flakes is coated, and the upper layer A floating type mooring shore support pile, characterized in that a sliding layer of either fluororesin or silicone resin is formed on.

FIG. 1 is an example of a cross section of a floating type mooring shore support pile obtained according to claim 1 of the present invention. In the figure,
Reference numeral 1 is a steel material, 2 is a base treatment layer, 3 is an anticorrosion coating layer, and 4 is a sliding layer. The coated surface of the steel material 1 is cleaned by shot blasting, grit blasting, sand blasting, etc., and then chromic acid-based chemical conversion treatment is performed, an organic primer layer is formed, or chromic acid-based chemical conversion treatment is performed and then organic. A base treatment such as forming a system primer layer is performed.
After the undercoating layer 2 is completely cured, the anticorrosion coating layer 3 is coated thereon. The base treatment layer 2 is not particularly limited as long as it has excellent adhesion to the anticorrosion coating layer 3. Further, as the anticorrosion coating layer 3, a polyurethane resin, which has been conventionally highly evaluated for its anticorrosion performance and is widely used for heavy anticorrosion coated steel materials, is preferable. The sliding layer 4 is coated before the anticorrosion coating layer 3 is hardened by touch and is not completely hardened. The sliding layer 4 is preferably made of fluorine-based resin or silicon-based resin having excellent slidability so that the dynamic friction coefficient between the sliding layer 4 and the bearing roller that comes into contact with the sliding-type mooring shore support pile after being installed is small. The purpose of the sliding layer 4 is to prevent damage to the anticorrosion coating layer 3 by reducing damage due to wear of the outermost layer, and to maintain long-term anticorrosion properties and aesthetics. Further, particularly when a fluorine-based resin is used as the sliding layer 4, since it is excellent in weather resistance, it can be colored to further maintain its aesthetic appearance.

FIG. 2 is an example of a cross section of a floating type mooring shore support pile obtained according to claim 2 of the present invention. In the figure,
Reference numeral 1 is a steel material, 2 is a base treatment layer, 3 is an anticorrosion coating layer, and 4 is a sliding layer. The coated surface of the steel material 1 is cleaned by shot blasting, grit blasting, sand blasting, etc., and then chromic acid-based chemical conversion treatment is performed, an organic primer layer is formed, or chromic acid-based chemical conversion treatment is performed and then organic. A base treatment such as forming a system primer layer is performed.
After the undercoating layer 2 is completely cured, the anticorrosion coating layer 3 is coated thereon. The base treatment layer 2 is not particularly limited as long as it has excellent adhesion to the anticorrosion coating layer 3. Further, as the anticorrosion coating layer 3, a polyolefin resin or a polyurethane resin, which has been conventionally highly evaluated for its anticorrosion performance and is widely used for heavy anticorrosion coated steel materials, is preferable. While the anticorrosion coating layer 3 is uncured, the flocking material 5 of inorganic short fibers or organic short fibers is flocked on the anticorrosion coating layer 3 by an electrostatic flocking method or spraying with an air gun. After the anticorrosion coating layer 3 is cured, the protection layer 6 is coated. The protective layer 6 needs to have a strength capable of withstanding impact and the like, and is preferably a vinyl ester resin, a polyester resin, or an epoxy resin containing an inorganic fiber or an inorganic flake. After the protective layer 6 is cured, it covers the sliding layer 4. The sliding layer 4 is the same as in claim 1 of the present invention.

The difference between Claim 2 of the present invention and Claim 1 of the present invention is that in Claim 2 of the present invention, a protective layer 6 is provided so that the anticorrosion coating layer 3 is not damaged by an impact such as a wave. It is a point. Further, the flocked material 5 is intended to maintain the adhesion between the anticorrosion coating layer 3 and the protective layer 6 and to keep the anticorrosion coating layer 3 sound without being peeled off even if the protective layer 6 is cracked by an impact. .

[0013]

The present invention will be described in more detail with reference to the following examples, but the scope of the present invention is not limited to these examples.

Table 1 shows Examples-1 to 6 and Comparative Example-1.
The coating specifications of ~ 3 are shown. Steel pipe (600 mm x 12 mm x
3 m) was grit blasted, a urethane-based primer was applied to a film thickness of 30 μm and cured, and then a polyurethane resin was spray-coated to a film thickness of 2.5 mm to form an anticorrosion coating layer. In Examples-1 and 2 and Comparative Examples-1 and 2, after the anticorrosion coating layer was cured, the sliding layer shown in Table 1 was applied to 100 μm. Example-
Nos. 3 to 5 use a handy type electrostatic flocking machine while the anticorrosion coating layer is uncured, and flock a nylon fiber (3d × 2 mm) flocked material onto the anticorrosion coating layer, and after the anticorrosion coating layer is completely cured, The protective layer shown in Table 1 was applied to a film thickness of 2.0 mm. Further, after the protective layer is cured, a slipping layer shown in Table 1 is formed on the protective layer 10
0 μ was applied. In Example-6, after the grit blast treatment,
An epoxy-based primer was applied to 50 μm, adhesive polyethylene was applied to 100 μm, and polyethylene was extrusion-coated to 2.5 mm to form an anticorrosion coating layer.
A flocked material, a protective layer and a sliding layer were formed in the same manner as in. In Comparative Example-3, only the anticorrosion coating layer was used.

With respect to the examples and comparative examples prepared as described above, 150 mm × 12 mm × 500 mm was cut into test pieces, and the adhesion, abrasion resistance and impact resistance between the sliding layer and the anticorrosion coating layer or the protective layer were obtained. The sex was evaluated. Adhesion is 1
The wear resistance was evaluated in a mm-shaped mesh test by applying a load of 1 Ton to a urethane rubber roll having a diameter of 120 mm and a length of 100 mm and performing a roll rolling wear test at a stroke of 300 mm 30,000 times.
The impact resistance was evaluated by the state of the film when a punch diameter of 15.9 mm and a 5 kg weight was dropped from a height of 500 mm.

It can be seen from Table 1 that when a proper sliding layer is formed, the abrasion resistance is improved, the anticorrosion coating layer is not damaged, and the appearance is maintained. Further, it can be seen that when the protective layer is inserted between the anticorrosion coating layer and the sliding layer, the impact resistance is improved and the anticorrosion coating layer is not damaged. Further, the adhesion between the sliding layer and the anticorrosion coating layer or the protective layer is good in all the examples.

[0017]

[Table 1]

[0018]

[Table 2]

[0019]

As an effect of the present invention, the sliding layer reduces wear on the bearing rollers to prevent damage to the anticorrosion coating layer, thereby maintaining long-term anticorrosion property and aesthetic appearance. You can get a stake.

[Brief description of drawings]

FIG. 1 is a view showing the configuration of a floating type mooring shore support pile according to an embodiment of the present invention.

FIG. 2 is a view showing the structure of a floating type mooring shore support pile according to an embodiment of the present invention.

[Explanation of symbols]

1 ... Steel 2 ... Undercoat 3 ... Anticorrosion coating layer 4 ... Sliding layer 5 ... Flocking material 6 ... Protective layer

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Claims (2)

[Claims] 1. A support pile mooring a floating mooring shore to a quay, wherein an outer surface of the support pile is coated with a polyurethane resin after an undertreatment to form an anticorrosion coating layer. A floating-type mooring shore support pile, characterized in that it is coated with one of the sliding layers of resin. 2. A support pile mooring a floating mooring shore to a quay, wherein an outer surface of the support pile is coated with a polyolefin resin or a polyurethane resin after being subjected to a base treatment to form an anticorrosion coating layer, and the anticorrosion coating layer is uncured. After flocking an inorganic fiber or an organic fiber on the anticorrosion coating layer, a vinyl ester resin containing an inorganic fiber or an inorganic flake, a polyester resin, or a protective layer of an epoxy resin is coated, and further on the upper layer. A floating-type mooring shore support pile, characterized in that a sliding layer of either fluorine-based resin or silicon-based resin is formed.