A mirror surface paint coating structure special for steel structure and a steel structure

Abstract

The utility model discloses a kind of mirror surface paint coating structures and steel structures special for steel structure, it is related to steel structure technical field, can solve the problem of the surface flatness of the paint coating of the surface of existing steel structure when meeting the requirements of corrosion and fire prevention.The utility model embodiment discloses a kind of mirror surface paint coating structures special for steel structure, including the anticorrosive combined layer directly coated on the surface of steel structure, and finish paint protective layer, further including the leveling combined layer coated on the anticorrosive combined layer and the fireproof combined layer coated on the leveling combined layer, and the polishing combined layer coated on the fireproof combined layer, the finish paint protective layer is used to be coated on the polishing combined layer.

Description

Technical Field

[0001] This utility model relates to the field of steel structure technology, specifically to a mirror paint coating structure and steel structure specifically for steel structures. Background Technology

[0002] Currently, the paint coating on steel structures in the domestic construction industry typically consists of four layers: primer, intermediate coat, fire-retardant coating, and topcoat, to meet the corrosion and fire protection requirements of ordinary steel structures. However, when the steel structure surface has irregular shapes, bends, or numerous welds, and a high degree of surface flatness is required, the conventional four-layer coating structure is insufficient. This is because the fire-retardant coating material, due to the aforementioned irregular shapes, bends, and numerous welds, requires a thick fire-retardant coating, resulting in very poor surface roughness. Using an ultra-thin fire-retardant coating would lead to poor weld coverage of the steel structure. Therefore, improvements are needed.

[0003] Based on the above background, the inventors designed a mirror-finish paint coating structure and a steel structure specifically for steel structures to solve at least one of the above problems, and thus, this application is filed. Summary of the Invention

[0004] The purpose of this application is to provide a mirror-finish paint coating structure and steel structure specifically for steel structures, in order to solve the problem of poor surface flatness of existing paint coatings on steel structures while meeting the requirements for corrosion and fire protection.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution: On the one hand, this application provides a mirror paint coating structure for steel structures, including an anti-corrosion composite layer directly coated on the surface of the steel structure, and a topcoat protective layer, as well as a leveling composite layer coated on the anti-corrosion composite layer and a fireproof composite layer coated on the leveling composite layer, and a polishing composite layer coated on the fireproof composite layer, wherein the topcoat protective layer is used to coat the polishing composite layer.

[0006] Optionally, the leveling composite layer includes a first interface layer, a first putty layer, a second interface layer, a second putty layer, a first acid and alkali resistant layer, and a third interface layer. The first interface layer is coated on the anti-corrosion composite layer, the first putty layer is coated on the first interface layer, the second interface layer is coated on the first putty layer, the second putty layer is coated on the second interface layer, the first acid and alkali resistant layer is coated on the second putty layer, and the third interface layer is coated on the first acid and alkali resistant layer. The fire-resistant composite layer is coated on the third interface layer.

[0007] Optionally, the thickness range of the first interface layer, the second interface layer and the third interface layer is 60um to 80um.

[0008] Optionally, the thickness of the second putty layer is less than the thickness of the first putty layer; The thickness range of the first and second putty layers is 1mm to 2mm; The thickness of the first acid and alkali resistant layer ranges from 500 μm to 800 μm.

[0009] Optionally, the fire-resistant composite layer includes a fire-resistant coating and a first sealing paint layer; The fire-retardant coating is applied to the outermost layer of the leveling composite layer, and the first sealing paint layer is applied to the fire-retardant coating; The polishing composite layer is applied over the first sealing paint layer.

[0010] Optionally, the thickness of the fire-retardant coating ranges from 1.5 mm to 2 mm; The thickness of the first sealing coating layer ranges from 80µm to 120µm.

[0011] Optionally, the polishing composite layer includes a flexible paint layer, a second acid and alkali resistant layer, and a second sealing paint layer; A flexible paint layer is applied to the outermost layer of the fireproof composite layer, a second acid and alkali resistant layer is applied to the flexible paint layer, and a second sealing paint layer is applied to the second acid and alkali resistant layer. The topcoat protective layer is applied over the second sealing coating layer.

[0012] Optionally, the thickness of both the flexible coating layer and the second sealing coating layer ranges from 80µm to 120µm; The thickness of the second acid and alkali resistant layer ranges from 500 μm to 800 μm.

[0013] Optionally, the anti-corrosion composite layer includes a primer layer for coating the steel structure surface and an intermediate paint layer coated on the primer layer; The thickness of the primer layer ranges from 50µm to 80µm. The thickness of the intermediate paint layer ranges from 150um to 200um.

[0014] On the other hand, this application provides a steel structure whose surface is coated with any of the above-described mirror paint coating structures specifically for steel structures.

[0015] Beneficial effects of the utility model: First, this application applies a leveling composite layer before applying the fireproof composite layer, ensuring a relatively smooth surface before coating. This avoids the problem of inadequate coverage of steel structure welds when using ultra-thin fireproof coatings for the fireproof composite layer. Furthermore, this application applies a grinding composite layer after the fireproof composite layer, ensuring a high degree of smoothness is achieved through grinding before applying the topcoat protective layer. This also prevents the grinding operation from affecting the fireproof composite layer and causing it to lose its fireproofing effect. Therefore, this application, through its designed layer structure, effectively solves the problem of poor surface smoothness of paint coatings on steel structures in the prior art when meeting corrosion and fire protection requirements.

[0016] Second, by designing a first interface layer, a second interface layer, and a third interface layer in the leveling composite layer, this application can improve the adhesion between layers. This allows the application to ensure leveling accuracy while using the first and second putty layers for both rough and fine leveling, and also ensures that the adhesion between each layer meets the standards. In addition, the leveling composite layer of this application also includes a first acid and alkali resistant layer, which can prevent the problem of alkali return on the paint surface caused by the use of putty materials in the first and second putty layers. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the surface of a steel structure when the coating of Embodiment 1 of this application is applied.

[0018] Figure 2 for Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 3 This is a cross-sectional structural diagram of Embodiment 2 of this application.

[0020] Explanation of reference numerals in the attached figures: 1-Steel structure, 2-Anti-corrosion composite layer, 21-Primer layer, 22-Intermediate paint layer, 3-Leveling composite layer, 31-First interface layer, 32-First putty layer, 33-Second interface layer, 34-Second putty layer, 35-First acid and alkali resistant layer, 36-Third interface layer, 4-Fireproof composite layer, 41-Fireproof coating, 42-First sealing paint layer, 5-Grinding composite layer, 51-Flexible paint layer, 52-Second acid and alkali resistant layer, 53-Second sealing paint layer, 6-Topcoat protective layer. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0022] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] Example 1: like Figure 1 and Figure 2 As shown, this embodiment provides a mirror paint coating structure for steel structures, including an anti-corrosion composite layer 2 directly coated on the surface of the steel structure 1, and a topcoat protective layer 6, as well as a leveling composite layer 3 coated on the anti-corrosion composite layer 2 and a fireproof composite layer 4 coated on the leveling composite layer 3, and a polishing composite layer 5 coated on the fireproof composite layer 4. The topcoat protective layer 6 is used to coat the polishing composite layer 5.

[0026] In this embodiment, by applying a leveling layer 3 before applying the fireproof composite layer 4, the fireproof composite layer 4 already has a relatively flat surface before coating. This avoids the problem of inadequate coverage of the weld seams of the steel structure 1 when the fireproof coating 41 of the fireproof composite layer 4 uses an ultra-thin fireproof coating. Furthermore, in this embodiment, a grinding composite layer 5 is applied after the fireproof composite layer 4 is coated. This ensures that a high degree of flatness can be achieved through grinding when applying the topcoat protective layer 6, while avoiding the grinding operation from affecting the fireproof composite layer 4 and causing the fireproof effect to fail. Therefore, through the above-designed layer structure, this embodiment can effectively solve the problem of poor surface flatness of the paint coating on the surface of the steel structure 1 in the prior art when meeting the requirements for corrosion and fire resistance.

[0027] The materials used for each coating in this embodiment are all commercially available materials. The core concept of this embodiment is to achieve both corrosion and fire resistance for ordinary steel structure 1 by designing multiple coatings, while also achieving extremely high surface flatness and a mirror-like effect.

[0028] In this embodiment, the leveling composite layer 3 includes a first interface layer 31, a first putty layer 32, a second interface layer 33, a second putty layer 34, a first acid and alkali resistant layer 35, and a third interface layer 36. The first interface layer 31 is coated on the anti-corrosion composite layer 2, the first putty layer 32 is coated on the first interface layer 31, the second interface layer 33 is coated on the first putty layer 32, the second putty layer 34 is coated on the second interface layer 33, the first acid and alkali resistant layer 35 is coated on the second putty layer 34, and the third interface layer 36 is coated on the first acid and alkali resistant layer 35. The fireproof composite layer 4 is coated on the third interface layer 36.

[0029] In this embodiment, the first interface layer 31, the second interface layer 33, and the third interface layer 36 designed in the leveling composite layer 3 can improve the adhesion between layers. This allows the application to ensure the leveling accuracy while using the first putty layer 32 and the second putty layer 34 for rough and fine leveling, and also ensures that the adhesion between each layer meets the standard. At the same time, the leveling composite layer 3 of this application is also provided with a first acid and alkali resistant layer 35, which can avoid the problem of alkali return on the paint surface caused by the use of putty materials in the first putty layer 32 and the second putty layer 34.

[0030] In this embodiment, the thickness of the first interface layer 31, the second interface layer 33, and the third interface layer 36 is 60 μm. When applying the first interface layer 31, the second interface layer 33, and the third interface layer 36, two coats are required. In this embodiment, the materials used for the first interface layer 31, the second interface layer 33, and the third interface layer 36 are all existing materials, which will not be described in detail here.

[0031] In this embodiment, the thickness of the second putty layer 34 is lower than the thickness of the first putty layer 32. The first putty layer 32 is used for rough leveling, and the second putty layer 34 is used for fine leveling. The first putty layer 32 and the second putty layer 34 are made of the same material. The materials used for applying the first putty layer 32 and the second putty layer 34 are a mixture of powder, water and glue. The materials used for the putty layers are existing materials and will not be described in detail here. The thickness range of the first putty layer 32 and the second putty layer 34 is 1mm to 2mm. In this embodiment, the thickness of the second putty layer 34 is 2mm and the thickness of the first putty layer 32 is 1mm. The first putty layer 32 can be applied three to four times, and the second putty layer 34 can be applied two to three times.

[0032] In this embodiment, the thickness of the first acid and alkali resistant layer 35 is 600 μm. The first acid and alkali resistant layer 35 can prevent the coating from returning to alkali and lay a good foundation for the smoothness of the subsequent coating. The material of the first acid and alkali resistant layer 35 in this embodiment is also an existing material, which is a mixture of powder, water and glue.

[0033] In this embodiment, the fireproof composite layer 4 includes a fireproof coating 41 and a first sealing paint layer 42; Fire-retardant coating 41 is applied to the outermost layer of leveling composite layer 3, and first sealing paint layer 42 is applied to fire-retardant coating 41; The polishing composite layer 5 is coated on the first sealing paint layer 42. In this embodiment, the fireproof coating 41 and the first sealing paint layer 42 are existing materials. In this embodiment, the fireproof coating 41 is an outdoor solvent-based fireproof coating for steel structure 1, and the first sealing paint layer 42 is an epoxy-type leakage sealing primer.

[0034] In this embodiment, the thickness of the fireproof coating 41 is 1.6 mm, and multiple coats can be applied when applying the fireproof coating 41. The thickness of the first sealing paint layer 42 is 90 μm. Applying the first sealing paint layer 42 can prevent the fireproof coating 41 from chalking and increase the adhesion between the coatings.

[0035] In this embodiment, the polishing composite layer 5 includes a flexible paint layer 51, a second acid and alkali resistant layer 52, and a second sealing paint layer 53; A flexible paint layer 51 is applied to the outermost layer of the fireproof composite layer 4, a second acid and alkali resistant layer 52 is applied to the flexible paint layer 51, and a second sealing paint layer 53 is applied to the second acid and alkali resistant layer 52. The topcoat protective layer 6 is applied onto the second sealing paint layer 53.

[0036] In this embodiment, a sanding composite layer 5 is designed on the fireproof composite layer 4, which can achieve a high degree of flatness through mechanical and manual sanding, and achieve a mirror effect after the topcoat protective layer 6 is applied.

[0037] In this embodiment, the material of the second acid and alkali resistant layer 52 is the same as that of the first acid and alkali resistant layer 35, the material of the second sealing paint layer 53 is the same as that of the first sealing paint layer 42, and the flexible paint layer 51 is made of existing materials that can be purchased directly on the market. Its main components include organic polymer materials (such as polyurethane and acrylic acid) and plasticizers.

[0038] In this embodiment, the thickness of both the flexible paint layer 51 and the second sealing paint layer 53 is 90 μm; The thickness of the second acid and alkali resistant layer 52 is 600 μm.

[0039] In this embodiment, the anti-corrosion composite layer 2 includes a primer layer 21 for coating on the surface of the steel structure 1 and an intermediate paint layer 22 coated on the primer layer 21. The thickness of the primer layer 21 is 60 μm; in this embodiment, the primer layer 21 is made of epoxy zinc-rich primer. The thickness of the intermediate paint layer 22 is 1800um. In this embodiment, the intermediate paint layer 22 is made of epoxy micaceous iron oxide intermediate paint, and the materials used for the primer layer 21 and the intermediate paint layer 22 are both existing materials.

[0040] Example 2: like Figure 3 As shown, this embodiment provides a steel structure 1, the surface of which is coated with any of the above-described mirror paint coating structures specifically for steel structures 1.

[0041] The remaining structures of this embodiment are the same as those of Embodiment 1 above, and will not be described again here.

[0042] It is understood that the above embodiments are merely exemplary implementations used to illustrate the principles of this utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of this utility model, and these modifications and improvements are also considered to be within the protection scope of this utility model.

Claims

1. A mirror-finish paint coating structure for steel structures, comprising an anti-corrosion composite layer (2) directly coated on the surface of the steel structure (1), and a topcoat protective layer (6), characterized in that, It also includes a leveling layer (3) coated on the anti-corrosion layer (2) and a fireproof layer (4) coated on the leveling layer (3), and a polishing layer (5) coated on the fireproof layer (4), wherein the topcoat protective layer (6) is used to coat the polishing layer (5).

2. The mirror-finish paint coating structure for steel structures according to claim 1, characterized in that, The leveling composite layer (3) includes a first interface layer (31), a first putty layer (32), a second interface layer (33), a second putty layer (34), a first acid and alkali resistant layer (35), and a third interface layer (36). The first interface layer (31) is coated on the anti-corrosion composite layer (2), the first putty layer (32) is coated on the first interface layer (31), the second interface layer (33) is coated on the first putty layer (32), the second putty layer (34) is coated on the second interface layer (33), the first acid and alkali resistant layer (35) is coated on the second putty layer (34), and the third interface layer (36) is coated on the first acid and alkali resistant layer (35). The fireproof composite layer (4) is coated on the third interface layer (36).

3. The mirror-finish paint coating structure for steel structures according to claim 2, characterized in that, The thickness range of the first interface layer (31), the second interface layer (33) and the third interface layer (36) is 60um to 80um.

4. A mirror-finish paint coating structure for steel structures according to claim 2, characterized in that, The thickness of the second putty layer (34) is lower than the thickness of the first putty layer (32); The thickness range of the first putty layer (32) and the second putty layer (34) is 1 mm to 2 mm; The thickness of the first acid and alkali resistant layer (35) ranges from 500um to 800um.

5. The mirror-finish paint coating structure for steel structures according to claim 1, characterized in that, The fireproof composite layer (4) includes a fireproof coating (41) and a first sealing paint layer (42). Fire-retardant coating (41) is applied to the outermost layer of leveling composite layer (3), and first sealing paint layer (42) is applied to fire-retardant coating (41); The polishing composite layer (5) is applied onto the first sealing paint layer (42).

6. The mirror-finish paint coating structure for steel structures according to claim 5, characterized in that, The thickness of the fire-retardant coating (41) ranges from 1.5 mm to 2 mm; The thickness of the first sealing paint layer (42) ranges from 80um to 120um.

7. The mirror-finish paint coating structure for steel structures according to claim 1, characterized in that, The polishing composite layer (5) includes a flexible paint layer (51), a second acid and alkali resistant layer (52), and a second sealing paint layer (53). A flexible paint layer (51) is applied to the outermost layer of the fireproof composite layer (4), a second acid and alkali resistant layer (52) is applied to the flexible paint layer (51), and a second sealing paint layer (53) is applied to the second acid and alkali resistant layer (52). The topcoat protective layer (6) is applied onto the second sealing layer (53).

8. The mirror-finish paint coating structure for steel structures according to claim 7, characterized in that, The thickness range of the flexible paint layer (51) and the second sealing paint layer (53) is 80um to 120um; The thickness of the second acid and alkali resistant layer (52) ranges from 500 μm to 800 μm.

9. A mirror-finish paint coating structure for steel structures according to claim 1, characterized in that, The anti-corrosion composite layer (2) includes a primer layer (21) for coating on the surface of the steel structure (1) and an intermediate paint layer (22) coated on the primer layer (21). The thickness of the primer layer (21) ranges from 50 μm to 80 μm; The thickness of the intermediate paint layer (22) ranges from 150 μm to 200 μm.

10. A steel structure, characterized in that, The surface of the steel structure (1) is coated with a mirror paint coating structure for steel structures as described in any one of claims 1-9.

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