JP2022080600A - Resin-coated member - Google Patents

Abstract

To provide a resin-coated member including a resin layer that has improved peelability and adhesion in a balanced manner.SOLUTION: A resin-coated member 10 includes a member 12, and a resin layer 14 that coats the surface of the member 12 and is formed of transparent polyurea resin. The resin-coated member 10 includes a peeling region 16 that is provided between the member 12 and the resin layer 14 and comprises a peeling layer 20 formed of a peeling agent, and a non-peeling region 18 that is provided between the member 12 and the resin layer 14 and does not comprise the peeling layer 20.SELECTED DRAWING: Figure 1

Description

The present disclosure relates to resin-coated members.

Conventionally, the surface of a member such as a steel member used for a structure such as a plant, a bridge, or a floodgate is coated with a resin sheet to improve the corrosion resistance and waterproofness of the member (patented). See Document 1).

Japanese Patent No. 5059222

By the way, when the resin layer such as a resin sheet coated on a member such as a steel member deteriorates over time, the deteriorated resin layer is peeled off from the member and then the new resin layer is coated again. ing. Further, when the member is painted, when the coating film deteriorates over time, the resin layer is peeled off, and then the member is repainted to cover a new resin layer.

Here, when the resin layer is peeled from the member, if the resin layer and the member are firmly adhered to each other, it may take a long time to peel the resin layer as described above. On the other hand, when the adhesion between the resin layer and the member is low, the resin layer is likely to be peeled off from the member, and a corrosive medium such as water is likely to enter through the gap between the resin layer and the member. Therefore, there is a possibility that the anticorrosion property and the waterproof property may be deteriorated.

Therefore, an object of the present disclosure is to provide a resin-coated member capable of improving the peelability and adhesion of the resin layer in a well-balanced manner.

The resin-coated member according to the present disclosure includes a member, a resin layer coated on the surface of the member and formed of a transparent polyurea resin, and provided between the member and the resin layer with a release agent. It has a peeling region made of a peeling layer to be formed, and a non-peeling region provided between the member and the resin layer and not including the peeling layer.

In the resin coating member according to the present disclosure, a plurality of the peeling regions are provided and may be separated from each other.

In the resin-coated member according to the present disclosure, the outer peripheral portion between the member and the resin layer may be formed in the non-peeling region.

In the resin-coated member according to the present disclosure, the peeled region may be provided in a dot shape or a line shape.

According to the resin coating member having the above structure, the peelability and the adhesiveness of the resin layer can be improved in a well-balanced manner.

It is sectional drawing which shows the structure of the resin coating member in 1st Embodiment of this disclosure. It is a plane schematic diagram which shows the structure of the resin coating member in 1st Embodiment of this disclosure. In the first embodiment of the present disclosure, it is a figure which shows the peeling region formed in the shape of a circle larger than the peeling region shown in FIG. In the first embodiment of the present disclosure, it is a figure which shows the peeling region formed irregularly in a circular shape and a dot shape. In the first embodiment of the present disclosure, it is a figure which shows the peeling area formed in the shape of a quadrangle and the shape of a dot. In the first embodiment of the present disclosure, it is a figure which shows the peeling area formed in the shape of a quadrangle and a line. It is a flowchart which shows the manufacturing method of the resin coating member in 1st Embodiment of this disclosure.

[First Embodiment]
Hereinafter, the first embodiment of the present disclosure will be described in detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing the configuration of the resin coating member 10. FIG. 2 is a schematic plan view showing the configuration of the resin coating member 10. The resin-coated member 10 includes a member 12 and a resin layer 14 coated on the surface of the member 12.

The member 12 is composed of a metal member made of a metal material such as a steel material, a concrete member made of a concrete material, and the like. The member 12 is, for example, a structural member used in a structure such as a plant, a bridge, or a floodgate. The member 12 is made of, for example, a flat plate member or the like. The member 12 may be painted in order to improve corrosion resistance, waterproofness, and the like, and a coating film may be provided on the surface of the member 12.

The resin layer 14 is covered with the surface of the member 12, and is made of resin. By covering the surface of the member 12 with the resin layer 14, the surface of the member 12 can be protected. For example, by covering the surface of the member 12 with the resin layer 14, the corrosion resistance and the waterproof property of the member 12 can be improved. Further, by covering the surface of the member 12 with the resin layer 14, damage such as scratches on the surface of the member 12 can be suppressed. The thickness of the resin layer 14 can be, for example, 100 μm to 3 mm. The resin layer 14 can be formed of a thermoplastic resin, a thermosetting resin, or the like. As the resin of the resin layer 14, for example, a polyurea resin, a urethane resin, a vinyl chloride resin and the like can be used.

The resin layer 14 is preferably made of a highly elastic resin. When the resin layer 14 is made of a highly elastic resin, the resin layer 14 has a high elastic force. As a result, even if microcracks or the like occur in the resin layer 14, they follow, so that the breakage of the resin layer 14 can be suppressed. For such a highly elastic resin, for example, a polyurea resin may be used.

The resin layer 14 is preferably made of a transparent resin. Since the resin layer 14 becomes transparent, the surface condition of the member 12 can be inspected and observed from the outside. For such a transparent resin, for example, a transparent polyurea resin may be used.

The resin-coated member 10 has a peeling region 16 provided between the member 12 and the resin layer 14, and a non-peeling region 18 provided between the member 12 and the resin layer 14. By providing the peeling region 16 and the non-peeling region 18 between the member 12 and the resin layer 14, the peelability and the adhesiveness of the resin layer 14 can be improved in a well-balanced manner. Next, the peeled region 16 and the non-peeled region 18 will be described in detail.

The peeling region 16 is provided between the member 12 and the resin layer 14, and is composed of a peeling layer 20 formed of a peeling agent. By providing the release layer 20, at least one of the adhesion between the resin layer 14 and the release layer 20 and the adhesion between the member 12 and the release layer 20 can be made smaller than the adhesion between the member 12 and the resin layer 14. can. By interposing the peeling layer 20 in the peeling region 16, the adhesion between the member 12 and the resin layer 14 is lowered, so that the resin layer 14 can be easily peeled off when the resin layer 14 is peeled off from the member 12.

The release layer 20 is formed of a release agent. As the release agent, for example, a fluororesin, a polyvinyl alcohol resin, a vinyl acetate resin, an acrylic resin, a silicone resin, a water-soluble resin and the like can be used.

At least one peeling region 16 may be provided, and a plurality of peeling regions 16 may be provided. When a plurality of peeling regions 16 are provided, the peeling regions 16 may be provided so as to be separated from each other. Even if peeling occurs between the member 12 and the resin layer 14 in one of the plurality of peeling regions 16 during the use of the resin coating member 10, the peeling regions 16 are discontinuous and do not come into contact with each other. The chain of exfoliation is suppressed. As a result, for example, even when a corrosive medium such as water enters the gap between the member 12 and the resin layer 14 from the peeled portion of the peeled region 16, the corroded medium is surrounded by the non-peeled region 18 and therefore corrodes. Further diffusion of the medium can be suppressed.

The peeling region 16 can be provided between the member 12 and the resin layer 14 in a dot shape (dot shape), a line shape (linear shape), or the like. The shape of the peeling region 16 can be, for example, a circular shape or a polygonal shape. As the peeling region 16, all the peeling regions 16 may be formed to have the same size or may be formed to have different sizes. The peeling regions 16 may be provided in a regular arrangement or may be provided irregularly.

For example, in the resin coating member 10 shown in FIGS. 1 and 2, the peeling region 16 is formed in a circular shape and a dot shape. 3 to 5 are schematic plan views showing the configurations of the other peeling regions 22, 24, 26, and 28. FIG. 3 is a diagram showing a peeling region 22 formed in a circular shape and a dot shape larger than the peeling region 16 shown in FIG. FIG. 4 is a diagram showing a peeling region 24 formed in a circular shape and irregularly in a dot shape. FIG. 5 is a diagram showing a peeling region 26 formed in a rectangular shape and a dot shape. FIG. 6 is a diagram showing a peeling region 28 formed in a rectangular shape and a line shape. The configurations of the peeled regions 16, 22, 24, 26, and 28 shown in FIGS. 1 to 6 are merely examples, and the configurations of the peeled regions are not limited to these.

The non-peeling region 18 is provided between the member 12 and the resin layer 14, and is configured not to include the peeling layer 20. Since the non-peeling region 18 does not include the peeling layer 20, the resin layer 14 and the member 12 are in direct contact with each other. As a result, in the non-peeling region 18, the adhesion between the member 12 and the resin layer 14 is enhanced. In this way, in the non-peeling region 18, the adhesion between the member 12 and the resin layer 14 is enhanced, so that it is possible to prevent a corrosive medium such as water from entering between the member 12 and the resin layer 14.

The outer peripheral portion between the member 12 and the resin layer 14 can be formed by the non-peeling region 18. It is preferable that the entire circumference of the outer peripheral portion between the member 12 and the resin layer 14 is formed by the non-peeling region 18. Since the adhesion between the member 12 and the resin layer 14 is enhanced at the outer peripheral portion between the member 12 and the resin layer 14, it is possible to suppress the intrusion of corrosive media such as water from the outside of the resin coating member 10.

The adhesion between the resin layer 14 and the release layer 20 is preferably greater than the adhesion between the member 12 and the release layer 20. When the resin layer 14 is peeled off from the resin coating member 10, the peeling layer 20 adheres to the resin layer 14, so that the resin layer 14 and the peeling layer 20 can be peeled off at substantially the same time. As a result, the peeling layer 20 is suppressed from remaining on the surface of the member 12, so that the peeling work of the resin layer 14 can be efficiently performed. For example, when the member 12 is made of stainless steel, the resin layer 14 is made of polyurea resin, and the release layer 20 is made of polyvinyl alcohol resin, the resin layer 14 and the release layer are peeled off when the resin layer 14 is peeled off. Since the peeling layer 20 can be peeled off at substantially the same time, the residual of the peeling layer 20 on the surface of the member 12 can be suppressed.

Next, a method for manufacturing the resin-coated member 10 will be described. FIG. 7 is a flowchart showing a manufacturing method of the resin covering member 10. The method for manufacturing the resin coating member 10 includes a release layer forming step (S10) and a resin layer forming step (S12).

In the peeling layer forming step (S10), the peeling layer 20 is formed only on a part of the surface of the member 12 with a peeling agent, and the peeling region 16 composed of the peeling layer 20 and the non-peeling region 18 not including the peeling layer 20 are formed. This is the process of forming. First, the surface of the member 12 may be pretreated before the release layer 20 is formed on the surface of the member 12. When the member 12 is a metal member, it can be pretreated by pickling, mechanical polishing, degreasing and cleaning. For these pretreatments, general pretreatment methods for metallic materials can be applied.

Next, a method of forming the release layer 20 will be described. The release layer 20 can be formed by spray coating, stamping, or the like with a release agent. For forming the release layer 20, a sheet material having holes through which the release agent permeates and holes through which the release agent does not permeate, such as a silk screen, or a mesh material may be used. As the release agent, the above-mentioned release agent such as fluororesin can be used. As the release agent, a commercially available one can be used.

The resin layer forming step (S12) is a step of covering the surface of the member 12 provided with the release layer 20 with a resin to form the resin layer 14. The resin layer 14 can be formed by spraying or coating an uncured resin on the surface of the member 12 provided with the release layer 20 and then curing the resin by heating or the like. As the resin, the above-mentioned polyurea resin or the like can be used. As the resin, a commercially available resin can be used. In this way, the resin-coated member 10 can be manufactured.

As described above, according to the resin-coated member having the above configuration, the member is provided with a member and a resin layer coated on the surface of the member and formed of resin, which is provided between the member and the resin layer and is formed of a release agent. It has a peeling region made of a peeling layer and a non-peeling region provided between the member and the resin layer and not including the peeling layer. Thereby, the peelability and the adhesiveness of the resin layer can be improved in a well-balanced manner.

For example, when the surface of the member is painted, the surface of the member may be repainted due to aged deterioration of the coating film or the like. In such a case, the resin layer of the resin coating member is peeled off, the deteriorated coating film on the surface of the member is removed, and the surface of the member is repainted. Normally, since the adhesion between the member and the resin layer is high, when the resin layer is peeled off from the resin-coated member, the resin layer is difficult to peel off from the member, and a great deal of labor is required. On the other hand, when the peeling region is provided between the member and the resin layer, the resin layer is easily peeled from the member, so that the resin layer can be easily peeled off. Further, in the non-peeling region, the adhesive force between the member and the resin layer is high, so that corrosion resistance, waterproofness, and the like can be ensured during use of the resin-coated member.

10 Resin coating member 12 Member 14 Resin layer 16 Peeling area 18 Non-peeling area 20 Peeling layer

Claims (4)

It is a resin coating member
With members
A resin layer coated on the surface of the member and formed of a transparent polyurea resin,
Equipped with
A peeling region provided between the member and the resin layer and formed of a peeling agent and a peeling region.
A non-peeling region provided between the member and the resin layer and not including the peeling layer,
A resin coating member having. The resin-coated member according to claim 1.
A resin-coated member having a plurality of peeled regions and separated from each other. The resin-coated member according to claim 1 or 2.
The outer peripheral portion between the member and the resin layer is a resin-coated member formed in the non-peeling region. The resin-coated member according to any one of claims 1 to 3.
The peeled region is a resin-coated member provided in a dot shape or a line shape.

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