JP3219028U - Laminated structure of repair and refurbishment treatment layers by coating on exterior materials of building structures - Google Patents

Abstract

An object of the present invention is to provide a laminated structure of an old paint film layer coated on an exterior material of a building structure and a repair / repair treatment layer by painting for a corrosion missing portion formed by deterioration of the old paint film layer. SOLUTION: A resin paint is applied to an old coating layer 2 coated on an exterior material 1 of a building structure and a corrosion missing portion 2a formed by deterioration of the old coating layer 2 through a coating means with a predetermined thickness. The primer treatment layer 4 formed by coating the surface of the primer treatment layer 4 and a color / durability treatment formed by applying a resin coating with a color pigment added to the surface portion of the primer treatment layer 4 to a predetermined thickness via a coating means. It consists of three treatment layers: a layer 5 and a top coat layer 6 formed by applying a resin paint to the surface portion of the coloring / durability treatment layer 5 through a coating means to a predetermined thickness. [Selection] Figure 1

Description

TECHNICAL FIELD The present invention relates to a technical field of a laminated structure of an old paint film layer applied to an exterior material of a building structure and a repair / repair treatment layer by painting for a corrosion missing portion formed by the deterioration of the old paint film layer. It is about.

Conventionally, the technique described in the following patent documents is known about the repair technique of the exterior material by a multilayer coating film.

Japanese Patent Laid-Open No. 1993-141966 JP 1994-079229 JP 1995-331162 A JP-A-1996-100187 JP 2000-055441 A JP 2000-178758 A JP 2001-191013 A Japanese Patent Application Laid-Open No. 2001-2000641 JP 2001-323212 A JP 2005-036034 A Japanese Patent Laying-Open No. 2005-082681 JP 2005-334759 A JP 2005-350892 A JP 2006-122820 A JP 2008-024823 A JP 2008-223417 A JP 2009-194441 A JP 2010-001492 A JP 2011-094247 A JP 2013-209832 A JP 2014-136199 A JP 2014-140994 A Japanese Patent Application Laid-Open No. 2015-063600 Japanese Patent Laying-Open No. 2015-068096 Japanese Patent Laying-Open No. 2015-124553 JP-A-2015-196726 JP 2006-132742 A Japanese Patent Laid-Open No. 2006-172804 Japanese Patent Laid-Open No. 2006-194045 Japanese Patent Laid-Open No. 2006-199681 JP 2017-2271 A JP 2004-84466 A

Building construction base materials such as the above-described conventionally disclosed painting-siding boards and pre-coated steel sheets are provided with functions such as corrosion resistance, weather resistance, contamination resistance, and hydrophilicity by laminating a plurality of coating films ( Patent Documents 20 and 22). As a method for repairing / repairing these building boards, when the coating surface is minor, repairing with a coating thickness of about 5 to 10 μm is possible by top coating (Patent Document 21).

Furthermore, as a method of repairing and refurbishing exterior materials in which damage to the painted surface is progressing as disclosed in the past, a method of laminating a coating film by applying multiple times such as undercoating, intermediate coating, and top coating is adopted ( Patent Documents 13, 16, and 20). At the time of such coating repair, the existing coating film is left as long as it is healthy. The paint adhesion with the base material surface such as an existing painted surface becomes important. Therefore, in order to enhance the adhesion of the paint and the durability of the base material, an undercoat paint is applied to the surface of the base material, and the base is adjusted.

Moreover, as an invention of the said prior art disclosure, when the organic solvent containing toluene and xylene is used as a coating material for undercoat, there is a concern about damage to the coating film of the base material. In this regard, an epoxy resin that can be dissolved in a weak solvent has also been developed for use in adjusting the surface treatment since it has good adhesion to a substrate (Patent Document 9).

  And as invention of the said indication, about the epoxy resin used as a paint for undercoat, the permeability to a rust layer can be improved and the fixation of rust can be aimed at by reducing the viscosity of an epoxy resin (patent) Reference 29). When the viscosity of the epoxy resin is lowered, paint dripping is likely to occur. However, a technique for solving this problem by containing an amide amine salt and a silicate is also disclosed (Patent Document 26). Furthermore, the pot life can be extended by employing a solvent having a carbonyl group (Patent Document 23).

In addition, as an invention of the above-mentioned disclosure, as an undercoat preparation composition of an epoxy resin excellent in long-term anticorrosive properties, addition of anticorrosive pigments and corrosive ion immobilization materials (Patent Document 29), zinc powder, amide amine salts, silicates (Patent Document 26) and the like are disclosed. Thus, the use of an epoxy resin is suitable for the base adjustment process.

As an invention of the above-mentioned disclosure, in order to improve durability and fastness of the coating film, it is necessary to further overlap the coating film layer. Moreover, in order to provide functionality, such as a weather resistance, it overcoats (patent documents 3, 15). Thus, a urethane resin coating containing polycarbonate diol and polyester polyol is also disclosed from the viewpoint of chemical resistance such as wear resistance and ultraviolet absorber (Patent Document 31).

Moreover, the invention of the said indication has also suggested utilization of a polyester resin with an epoxy resin as a primer coating film (patent document 6).

Furthermore, as a conventionally disclosed invention, a coating composition having improved adhesion of a urethane resin coating to a metal has been developed (Patent Document 4). In addition, when urethane resin is used as a surface treatment adjustment fee, it is suggested that weak solvents such as mineral spirit, naphtha, petroleum benzine, etc. can be used as a solvent. (Patent Document 12). In addition, paying attention to the point that the coating thickness can be increased by keeping the amount of isocyanate groups relative to hydroxyl groups within an appropriate range, and pointed out the merit of changing from epoxy resin to urethane resin for repairing concrete base materials. (Patent Documents 17 and 27).

Next, with regard to exterior materials for building structures, paneling materials represented by a siding panel have become widespread for the purpose of reducing local construction work. Painted paneling with unevenness (Patent Document 7), improvement of press formability of pre-coated steel sheets (Patent Document 2), and the like are also factors in the spread of the panel. Further, a renovation technique for building outer walls using fiber reinforced plastic panels is also disclosed (Patent Document 5).

Moreover, in the field panel construction of the invention disclosed in the related art, when the panel is attached or after the attachment, the connection surface is joined with a toned sealing material or the like to perform waterproofing. Moreover, the joint structure aiming at coating on a sealing agent is also disclosed (patent document 1).

Furthermore, as for the sealing material, the silicone-based sealing material has a problem in adhesion to the paint. Therefore, when coating on the surface of the sealing material, the adhesion of the paint can be improved by using a modified silicone sealing material (Patent Documents 11 and 18). A coating composition having base followability has also been developed as a top coat of a sealing material (Patent Document 28).

In addition, depending on the plasticizer used to adjust the viscosity of the sealing material, the plasticizer may diffuse to the surface of the cured product and further diffuse to the surface of the top coat, contaminating those surfaces. This also results in loss of elasticity. In this regard, a method for treating a surface of a sealing material or a protective coating on the surface (Patent Document 4) relates to an overcoating surface coating material of a sealing material using a strong solvent as a plasticizer. The utilization technique of this is developed (patent document 14).

Furthermore, the sealing part of the invention disclosed in the prior art is liable to crack due to solidification accompanying deterioration over time of the sealing material, lower adhesion to the base, deformation / distortion of the building, intrusion of rainwater from that part, etc. May cause a relatively large damage, and the repair method of such a part also becomes a problem. In order to prevent contamination by such a sealing material and improve the service life of the sealing material, a protective coating treatment technique using an unsaturated polyester resin is also disclosed (Patent Document 4).

  On the other hand, fiber reinforced plastics can be produced by impregnating a reinforced fiber with a matrix resin and exemplified by a bundled glass fiber as the reinforced fiber (Patent Document 10). Examples of the matrix resin include an epoxy resin, a polyurethane resin, and an unsaturated polyester resin (Patent Document 19). The combination of carbon fiber and epoxy resin is also disclosed in that it has excellent mechanical properties (Patent Document 30).

As an application technique, a fiber reinforced resin layer is formed on a polyurea resin putty having high elongation elasticity as a technique for preventing peeling of a concrete structure (Patent Document 8) or repairing and reinforcing a steel structure of a steel bridge. Repair reinforcement (Patent Document 25) and the like are disclosed. These utilize the high durability of fiber reinforced plastics and are based on the ease of local construction. With respect to the repair with these fiber reinforced plastics, it is disclosed that a fiber reinforced plastic layer can be further provided by primer treatment (Patent Document 24).

Furthermore, the construction method of the waterproof composite coating is disclosed in Japanese Patent Application Laid-Open No. 2004-84466.

The waterproof composite coating method disclosed above is a waterproof composite coating method in which at least a fiber reinforced resin layer B and a topcoat resin layer C are laminated on a substrate A, and the fibers The gist of the invention is a construction method for a waterproof composite covering in which a topcoat resin layer C is constructed without performing a ground treatment for developing adhesiveness after at least 3 days have passed since the formation of the reinforced resin layer B. The primer-treated layer is not formed on the old paint film layer coated on the exterior material and the corrosion missing part formed by the deterioration of the old paint film layer.

Further, in the construction method of the disclosed waterproof composite covering, an epoxy resin, a urethane resin, a silicon resin, or a fluorine resin to which a coloring pigment is added is provided between the fiber reinforced resin layer B and the topcoat resin layer C. It is an invention in which a coating layer is formed by coating and a coloration / durability treatment layer formed by curing treatment is not formed.

As described above, what has been disclosed in the past has frequently used color steel plates and siding boards that are excellent in processing and construction and have excellent strength characteristics as exterior materials for building structures such as houses, buildings, and factories.

Furthermore, these exterior materials were shipped from the factory and pasted locally. At that time, the coating layer may be damaged due to rubbing of the uneven surface of the caging material. In addition, the occurrence of cracks in the coating film due to deterioration over time promotes the penetration of rainwater, etc., and the generation of local corrosion currents accelerates the corrosion of the underlying steel sheet, creating corrosion holes that are connected to each other and the underlying material is lost. Result. In addition, joint sealing damage due to expansion and contraction of the base material locally occurred, leading to corrosion damage of the coating layer and the base material.

Moreover, when the corrosion damage part of the base steel plate itself is wide, filling repair with a sealing agent becomes difficult. In addition, concrete, mortar, calcium silicate plates, etc. are prone to cracks and the like, and the base material itself deteriorates in portions where water absorption and drying accompanying rainwater intrusion is repeated, and repair with a sealing material is difficult. In addition, it is necessary to impart strength by painting.

However, the present invention improves the durability and recycles the exterior materials by combining the coating technology with the three-layer structure of the multilayer coating and the fiber reinforced plastic technology when painting and repairing these outer wall structures. It is an object of the present invention to provide a laminated structure of coating repair / repair treatment layers.

Further, according to the present invention, an old coating layer applied to the exterior material and the old coating layer are deteriorated as a laminated structure of a repair / repair treatment layer by painting on a deteriorated exterior material of a building structure. A primer treatment layer formed by applying a coating layer of a predetermined thickness to a portion of the formed corrosion that has been lost by applying a resin coating such as polyester resin, epoxy resin, or urethane resin via an application means; and acrylic resin or acrylic Epoxy resin or urethane with a colored pigment added between the top coat layer formed of a coating film layer formed by applying a resin coating of urethane resin or urethane resin or fluororesin to a predetermined thickness through an application means Coloring and durability treatment layer formed by applying resin, silicon resin or fluororesin to form a coating layer, along with primer treatment layer and topcoat layer, aligns colors simultaneously And be able to allowed to solve the problems and to be able.

In addition, according to the present invention, the primer treatment layer strongly enhances the adhesion with the base material of the existing base material, and also significantly enhances the adhesion with the top coat layer, and further improves the rust prevention and waterproof treatment effects of the foundation material. It was possible to raise significantly.

As a means for solving the above-mentioned problems, the device according to claim 1 is a laminated structure of a repair / repair treatment layer by painting on an exterior material 1 of a building structure.
A predetermined thickness is applied to the old paint film layer 2 applied to the exterior material 1 of the building structure and the corrosion missing portion 2a formed by the deterioration of the old paint film layer 2 through an application means. A primer-treated layer 4 formed by application to
A coloring / durability treatment layer 5 formed by applying a resin paint added with a coloring pigment to a surface portion of the primer treatment layer 4 to a predetermined thickness via an application means;
The surface layer of the coloring / durability treatment layer 5 is composed of three treatment layers including a top coat layer 6 formed by applying a resin paint to a predetermined thickness via an application means. It is a laminated structure of repair and refurbishment treatment layers by painting on exterior materials of building structures.

The invention according to claim 2 is a laminated structure of a repair / repair treatment layer by painting on the exterior material 1 of a building structure.
Resin paint such as polyester resin, epoxy resin or urethane resin on the old paint film layer 2 applied to the exterior material 1 of the building structure and the corrosion missing portion 2a formed by the deterioration of the old paint film layer 2 A primer-treated layer 4 formed by applying a predetermined thickness via a coating means;
A coloring / durability treatment layer 5 formed by applying a resin paint added with a coloring pigment to a surface portion of the primer treatment layer 4 to a predetermined thickness via an application means;
It is composed of three treatment layers including a top coat layer 6 formed by applying an acrylic resin resin coating to a predetermined thickness on the surface portion of the coloring / durability treatment layer 5 through an application means. It is the laminated structure of the repair and repair process layer by the coating with respect to the exterior material of the building structure of Claim 1 characterized by the above-mentioned.

The invention according to claim 3 is characterized in that the primer-treated layer 4 is blended with a fiber reinforced resin material, and is applied to the exterior material of a building structure according to claim 1 or 2. It is a layered structure of repair / repair treatment layers.

The invention according to claim 4 uses a resin such as an unsaturated polyester resin, an epoxy resin, or a urethane resin as a matrix resin of a fiber reinforced resin for forming the primer treatment layer 4, and the fiber reinforced resin material. The laminated structure of the repair / repair treatment layer by painting on the exterior material of the building structure according to claim 1, wherein a glass fiber material or the like is used.

Since the laminated structure of the repair / repair treatment layer by painting on the exterior material of the building structure of the present invention is as described above, a resin paint added with a color pigment is applied between the primer treatment layer and the topcoat layer. As a result, the color and durability treatment layer is formed, so that the color tone with the sound base material can be surely adjusted, and the coating film is applied to maintain the rust prevention and waterproofing imparted by the primer treatment. It has a number of advantages such as being able to impart robustness as a thickness, and also being able to reliably retain reinforcement with the top coat layer.

Furthermore, the present invention has an advantage that, by combining the laminated coating film and the partial FRP structure, it is possible to repair the corrosion breakage portion and at the same time align the color tone with the healthy portion of the base material.

In addition, the present invention treats the coating film of the exterior material as a consumable item, and it is possible to extend the renewal period by simply renewing the coating film and providing durability of the repair coating film until it is necessary to repair the base material To do.

Furthermore, the present invention discloses a coating composition that can be used for future technological development of urethane resin and polyester resin, and enables paint repair with urethane resin and polyester resin from primer treatment to top coat. is there.

It is a partially cutaway enlarged longitudinal sectional view of a laminated processing layer formed by applying to a deteriorated exterior material.

  Since the embodiments related to the invention described in claims 1 to 4 of the present invention are common, they will be described collectively as follows.

The exterior material 1 of the base material of the present invention is a color steel plate, various siding boards, flexible boards, calcium silicate boards, precast concrete boards, lightweight cellular concrete boards, cement, mortar, gypsum board boards, aluminum, steel, stainless steel. And so on.

The primer treatment layer 4 is intended for a base preparation treatment, and as a coating resin, a polyester resin, a urethane resin, an epoxy resin, or the like is used. If rust is generated, the viscosity of these resins may be adjusted with a solvent to improve the permeability to rust.

As the solvent, an aliphatic hydrocarbon solvent and a high-boiling aromatic hydrocarbon solvent can be used. Specifically, mineral spirit, naphtha, n-butane, n-hexane, n-octane, or the like is used.

As the rust preventive pigment added to the epoxy resin and the urethane resin, aluminum phosphate, zinc phosphate, phosphate, molybdate, stearic acid, tannic acid, or the like is used. In addition, extender pigments, colored pigments, pigment dispersion materials, surface conditioners, anti-sagging, and the like are added.

As pigments to be blended, coloring pigments such as titanium dioxide, iron oxide and carbon black, extender pigments such as silica, calcium carbonate and barium sulfate, zinc phosphate, aluminum phosphate, molybdic acid, barium metaborate and hydrocalumite Use anti-corrosion pigments.

As a sealing material for cracks and breakage points, silicone, modified silicone, polyurethane, two components, modified silicone, polysulfide, polyurethane, epoxy, urethane, polyurea resin, silicon are used as one component To do. It is necessary to select a sealing material that has low solvent contamination and excellent adhesion to the base material and the sealer and to the FRP matrix resin layer.

Modified silicone systems can be painted and used in the present invention. Urethanes have good paintability, but need to be overcoated due to poor weather resistance. The thickness of the primer is preferably 1 to 200 μm.

Forming the treatment layer 4 by the primer treatment applies a resin coating selected from a polyester resin, an epoxy resin or a urethane resin to the deteriorated exterior material 1 to the old paint film layer 2 and the corrosion missing portion 2a so as to penetrate. To resin. This achieves adhesion with the exterior material 1 and adhesion with the top coat, and performs rust prevention treatment and waterproof treatment of the exterior material 1.

In the figure, the code | symbol 3 has shown the repair process layer formed by apply | coating to the corrosion lack location 2a and the old coating film layer 2. FIG.

  As the coloring / durability treatment layer 5, an epoxy resin, a urethane resin, a silicon resin, or a fluororesin can be used. The durable layer 5 is provided for the purpose of reinforcing the color of the top coat film of the primer-treated layer 4 and the top coat layer 6 and the same color tone. The film thickness of the durable layer 5 is preferably 1 to 300 μm.

Forming the coloring / durability treatment layer 5 by coloring / durability treatment is to adjust the color tone of the exterior material that has not been deteriorated, and to apply the primer treatment to maintain the rust prevention and waterproofing. The purpose is to provide the film with a predetermined thickness to provide fastness and to reinforce the topcoat layer 6. What is used as a resin material is selected from an epoxy resin, a urethane resin, or an acrylic resin.

The top coat layer 6 aims at imparting weather resistance, light resistance, water resistance and stain resistance to the entire coating layer. An acrylic resin, an acrylic urethane resin, a urethane resin, a fluororesin, or the like is used as the coating resin. The coating thickness is suitably 0.1 μm to 20 μm.

Examples of the additive for the coating material for the top coat layer 6 include an ultraviolet absorber, a light stabilizer, a light-shielding material, a film-forming aid, and a stain-resistant hydrophilic property-imparting material. In addition, a pigment can be mixed with the coating liquid in order to align the color tone of the repaired portion.

As the light shielding material, calcium carbonate, silica, alumina, magnesium oxide, talc, clay, or the like is used.

As a film forming aid, texanol, butyl cellosolve, butyl cellosolve acetate, carbitol, triethylene glycol, or the like is used.

As the hydrophilicity-imparting material for the purpose of contamination resistance, organosilicate, fluorine-based surfactant, photocatalytic titanium oxide and the like are used.

As the solvent, an aliphatic hydrocarbon compound such as mineral spirit is used.

The top coat layer 6 is intended to protect the primer treatment layer 4, the durability treatment layer 5, the FRP matrix resin, and the sealing material. As the resin material, urethane resin, silicon resin, fluororesin, polycarbonate diol, or the like is appropriately used.

Next, the FRP structure has a primer treatment layer 4 or a durability treatment layer 5 for the purpose of repairing / reinforcing missing portions that are difficult to be ground-treated with a sealing material, and repairing cracks and breakage of cement and mortar exterior materials. Provide.

As the fiber, carbon fiber, nylon short fiber, glass fiber, Zylon fiber, boron fiber, polyethylene fiber, Kepler fiber, or the like is used. These materials can also be used as a nonwoven fabric.

As the matrix resin, an unsaturated polyester resin, an epoxy resin, a urethane resin, or the like is used.

Further, the FRP structure is preferably provided in the primer treatment layer 4 in order to improve the adhesion with the base material. When a polyester resin is used as the primer treatment layer 4, it is preferable to use oil-free, but in other cases, adhesion to the reinforcing colored layer is achieved by applying a primer treatment to the polyester resin coating film. It is.

The method of applying the paint is by brush painting, roller painting, spray painting, dipping or the like.

In the figure, reference numeral 1 denotes an exterior material, and 2 denotes an old paint film layer.

Reference numeral 2a denotes a corrosion missing portion where the old coating layer 2 is deteriorated and formed, and 3 denotes a repair treatment layer of the corrosion missing portion 2a.

The code | symbol 7 has shown the fiber reinforcement | strengthening process layer.

<Adjustment of test sample>
(Adjustment of the base material of the present invention)
(1) The base material used for the coating adhesion test (cross-cut method, JISK5600-5-6) is a siding panel discarded due to the replacement of the outer walls of ordinary houses, and the degree of coating deterioration is JISK5600- As an evaluation of coating film deterioration specified in 8-5, a portion corresponding to the peeling grade 1 in JIS Table 2 was prepared as a base material for testing.
(2) A4 plate clear case (polypropylene sheet) was used as the base material used for the bending resistance test of the coating film.
(Adjustment of primer treatment layer 4 of the present invention)
The unsaturated polyester resin ^35g / ^{m 2 ~45g} / m 2 was left applied for 4 days as the resin dry weight, temperature 23 ± 2 ° C., a relative humidity of 50 ± 5%, performed curing of 16 hours to 24 hours, The primer treatment layer 4 was adjusted.
(Adjustment of coloring / durability treatment layer 5 of the present invention)
The priming layer 4 subjected to the adjustment, the epoxy resin added with colored pigments leaving the ^35g / ^{m 2 ~45g} / m 2 as a resin dry weight was applied for 4 days, the temperature 23 ± 2 ° C., a relative humidity of 50 ± The primer treatment layer 4 was adjusted by curing at 5% for 16 to 24 hours.
(Adjustment of the top coat layer 6 of the present invention)
Coloring and durability treatment layer 5 subjected to the adjustment, fluororesin to ^35g / ^{m 2 ~45g} / m 2 was left applied for 4 days as the resin dry weight, temperature 23 ± 2 ° C., a relative humidity of 50 ± 5% Then, curing was performed for 16 hours to 24 hours, and the topcoat layer 6 was adjusted.

<Coating adhesion test>
The adhesion test of the coating film was evaluated by the cross-cut method defined in JISK5600-5-6: 1999. With respect to the cut interval (JIS 7.1.4), the primer-treated layer 4 was 1 mm apart, and the other coating layers were 2 mm apart. A commercially available cellophane tape was used as the transparent pressure-sensitive adhesive tape.

The constituent aspects of the materials described below as Examples 1 to 7 refer to those described in “Table 1” below, and are not illustrated in FIG. 1.

(Example 1)
As glass fiber, 5 g of focused fiber having a length of 3 mm and a fiber diameter of 9 to 13 μm is blended with 1000 g of unsaturated polyester resin (corresponding to 0.58 mass% with respect to the dry weight of the polyester resin), and the glass fiber is uniformly dispersed. Then, 10 g of the curing agent was uniformly mixed and applied with a roller to obtain Example 1. Moreover, the thing which does not mix | blend glass fiber was made into the comparative example 1.
(Example 2)
Example 2 was the same as Example 1 except that the glass fiber length of Example 1 was 6 mm.
Example 3
The test piece of Example 1 was provided with a coloring / durability treatment layer 5 to obtain Example 3. Similarly, a coloring / durability treatment layer 5 was provided on the test piece of Comparative Example 1 to obtain Comparative Example 2.
(Example 4)
The test piece of Example 2 was provided with a coloring / durability treatment layer 5 to obtain Example 4.
(Example 5)
A top coat layer 6 was provided on the test piece of Example 3 to obtain Example 5. Similarly, the topcoat layer 6 was provided on the test piece of Comparative Example 2 to obtain Comparative Example 3.
(Example 6)
A top coat layer 6 was provided on the test piece of Example 4 to obtain Example 6.

<Bend resistance test of coating film>
The test piece for the bending resistance test of the coating film was bent and evaluated at an angle at which cracking was observed.
(Example 7)
The same primer treatment as in Example 1 was performed on the test piece for the bending resistance test of the coating film, and Example 7 was obtained. Comparative Example 4 was treated with a primer that did not contain glass fiber as in Comparative Example 1.
(Example 8)
The test piece for the bending resistance test of the coating film was subjected to the same primer treatment as in Example 2 to obtain Example 8.

<Evaluation>
(Evaluation method)
(1) About the adhesion test of the coating film, it evaluated by the classification | category of the test result of Table 1 of JISK5600-5-6.
(2) About the bending resistance test, it evaluated by the mandrel diameter of the type 1 prescribed | regulated to JISK5600-5-1.

(Evaluation results)
(1) Coating film adhesion test results (cross-cut method)
About the comparative example 1 which does not mix | blend glass fiber with the primer processing layer 4, the adhesiveness of a coating film is quantity, and it was classification 0 in the classification | category of JIS5800-5-6 Table 1 test result (the edge of a cut was completely Smooth and will not peel off the eyes of any grid).
Examples 1 and 2 in which glass fibers are blended in the primer treatment layer 4 are also classified as 0, and there is no inhibition of adhesion to the base material due to blending of glass fibers, which is a good result.
(2) Bending resistance test result of coating film (cylindrical mandrel method)

Although the embodiments have been described with reference to the drawings, the present invention is not limited to the illustrated examples, and includes a range of design changes and application variations that are usually made by those skilled in the art without departing from the technical idea thereof. I will mention that just in case.
In particular, it can also be used for new construction and recycling. Standardization can be achieved by clarifying the respective characteristics of the multilayer coating film. In addition, the present invention discloses a coating film structure that can cope with future technological development of urethane and polyurethane paints.

1 Exterior material (underlying steel material)
2 Old coating layer 2a Corrosion missing portion 3 Corrosion missing portion repair treatment layer 4 Primer treatment layer 5 Coloring / durability treatment layer 6 Topcoat layer 7 Fibre-reinforced treatment layer

Claims (4)

In the laminated structure of the repair / renovation treatment layer by painting on the exterior material of building structures,
Applying a resin paint to a predetermined thickness via an application means on the old coating layer applied to the exterior material of the building structure and the corrosion missing portion formed by the deterioration of the old coating layer. A primer-treated layer formed;
A coloring / durability treatment layer formed by applying a resin coating to which a color pigment is added to the surface portion of the primer treatment layer to a predetermined thickness via an application means;
An architectural structure comprising a top coat layer formed by applying a resin coating to a predetermined thickness on a surface portion of the coloring / durability treatment layer through a coating means, and a top coat layer. Laminated structure of repair and refurbishment treatment layers by coating the exterior material of the structure. In the laminated structure of the repair / renovation treatment layer by painting on the exterior material of building structures,
Applying means for applying a resin paint such as polyester resin, epoxy resin or urethane resin to the old paint film layer coated on the exterior material of the building structure and the corrosion missing portion formed by the deterioration of the old paint film layer And a primer treatment layer formed by applying to a predetermined thickness via,
A coloring / durability treatment layer formed by applying a resin coating to which a color pigment is added to the surface portion of the primer treatment layer to a predetermined thickness via an application means;
The surface of the coloring / durability treatment layer is composed of three treatment layers including a top coat layer formed by applying an acrylic resin paint to a predetermined thickness via an application means. A laminated structure of a repair / repair treatment layer by coating the exterior material of the building structure according to claim 1.   The laminated structure of a repair / repair treatment layer by painting on an exterior material of a building structure according to claim 1 or 2, wherein a fiber reinforced resin material is blended in the primer treatment layer.   Resin such as unsaturated polyester resin or epoxy resin or urethane resin is used as the matrix resin of the fiber reinforced resin for forming the primer treatment layer, and glass fiber material or the like is used as the fiber reinforced resin material. The laminated structure of the repair / repair treatment layer by painting with respect to the exterior material of the building structure according to claim 1, 2 or 3.

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