Protective coating for surface layer of steel structure

Abstract

The utility model discloses a steel structure surface layer protective coating which comprises finish paint, a diaphragm is arranged in the lower side of the finish paint, and a fluorescent agent is arranged on the outer surface of the lower side of the diaphragm. Whether the paint on the outer side of the protective paint of the steel structure is peeled off or not is rapidly judged according to whether the fluorescent agent of the protective paint on the outer side of the steel structure reflects light or not, the effect that an operator can rapidly and conveniently overhaul whether the protective paint is complete or not can be achieved, meanwhile, the fluorescent agent, the middle coating and the primer on the lower side of the diaphragm are protected through the diaphragm, and the service life of the diaphragm is prolonged. According to the present invention, the chemical reaction between the finish paint and the intermediate coating is prevented, the problems of yellowing, shedding and the like of the coating are avoided, the finish paint and the intermediate coating are isolated, the interpenetration between the finish paint and the intermediate coating is prevented, the quality and the performance of the coating are ensured, the durability and the aging resistance of the coating are enhanced, and the service life of the coating is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical direction of protective coatings, and specifically relates to a protective coating for the surface of a steel structure. Background Art

[0002] Steel structure surface protective coating is a kind of coating widely used in steel structure anti-corrosion. It can effectively protect steel structures from natural factors such as corrosion and weathering and mechanical damage, and extend the service life of steel structures. However, there is no shielding between the topcoat and the intermediate coating. When the intermediate coating is not completely dry, the topcoat is easily chemically reacted with the intermediate coating when the topcoat is applied, resulting in yellowing and falling off problems, and mutual penetration, which reduces the durability and anti-aging performance of the coating. Utility Model Content

[0003] The utility model aims to provide a steel structure surface protective coating for existing devices to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a protective coating for the surface of a steel structure, comprising a topcoat, a diaphragm is arranged at an inner position on the lower side of the topcoat, a fluorescent agent is arranged on the lower outer surface of the diaphragm, an intermediate coating is arranged at an inner position on the lower side of the diaphragm, and a primer is arranged at a lower position of the intermediate coating.

[0005] Preferably, the diaphragm is made of polyurethane material and has good chemical resistance, good wear resistance, excellent elasticity and flexibility, can resist corrosion from various chemical substances such as acids, alkalis, solvents, can withstand external forces such as mechanical friction and impact, and can adapt to coating surfaces of various shapes.

[0006] Preferably, the diaphragm is connected to the intermediate coating by an adhesive connection, and the topcoat is connected to the diaphragm by a spray connection.

[0007] Preferably, the fluorescent agent is connected to the lower outer wall surface of the diaphragm by coating connection, and the fluorescent agent has the characteristic of corrosion resistance.

[0008] Preferably, the intermediate coating is made of quartz sand material and has the characteristics of high hardness, good wear resistance and strong chemical stability.

[0009] Preferably, the primer is made of epoxy resin material and has the characteristics of good chemical resistance, strong heat resistance, strong adhesion and good electrical insulation performance.

[0010] Preferably, the topcoat is made of titanium dioxide material and has the characteristics of good hiding power, high gloss and strong stability.

[0011] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0012] (1) Through the setting of the diaphragm and the fluorescent agent, the operator can use light to illuminate the steel structure at night, and quickly determine whether the protective coating on the outer side of the steel structure is peeling off by observing whether the fluorescent agent of the protective coating on the outer side of the steel structure reflects the light. This can quickly and conveniently provide operators with a way to inspect whether the protective coating is intact. At the same time, through the setting of the diaphragm, the fluorescent agent, intermediate coating and primer on the lower side of the diaphragm are protected to prevent chemical reactions between the topcoat and the intermediate coating, avoid yellowing and peeling of the coating, and isolate the topcoat and the intermediate coating to prevent mutual penetration between them, thereby ensuring the quality and performance of the coating, enhancing the durability and anti-aging performance of the coating, and extending the service life of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the composition of the utility model.

[0016] In the figure: 1. Topcoat; 2. Diaphragm; 3. Fluorescent agent; 4. Intermediate coating; 5. Primer; 6. Epoxy resin; 7. Quartz sand; 8. Polyurethane; 9. Titanium dioxide. DETAILED DESCRIPTION

[0017] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-2 The utility model provides a technical solution: a protective coating for the surface of a steel structure, including a topcoat 1, a diaphragm 2 is arranged at the lower inner position of the topcoat 1, a fluorescent agent 3 is arranged on the lower outer surface of the diaphragm 2, an intermediate coating 4 is arranged at the lower inner position of the diaphragm 2, and a primer 5 is arranged at the lower position of the intermediate coating 4.

[0019] In this embodiment, the coating has a multi-layer structure, which includes a primer, an intermediate coating, a fluorescent agent, a diaphragm and a topcoat. The primer is made of epoxy resin material, has good adhesion and anti-corrosion properties, can form a strong chemical bond with the surface of the steel structure, and can also prevent the surface of the steel structure from rusting and corrosion. The intermediate coating is made of quartz sand material, which can enhance the hardness and wear resistance of the coating. The diaphragm is made of polyurethane material, which has good chemical resistance, good wear resistance, excellent elasticity and flexibility, can resist the erosion of various chemical substances such as acids, alkalis, and solvents, can withstand external forces such as mechanical friction and impact, and can adapt to various shapes of coating surfaces. The topcoat is made of titanium dioxide material, has very strong hiding power, can effectively cover the defects and color differences on the surface of the substrate, improve the hiding power of the coating, and make the surface of the coating more beautiful. The steel structure is protected by the protective coating composition of the multi-layer structure.

[0020] like Figure 1-2 As shown, the diaphragm 2 is made of polyurethane 8 material, and has good chemical resistance, good wear resistance, excellent elasticity and flexibility, can resist the erosion of various chemical substances such as acids, alkalis, solvents, can withstand external forces such as mechanical friction and impact, and can adapt to various shapes of coating surfaces. The diaphragm 2 is connected to the intermediate coating 4 by an adhesion connection method, the topcoat 1 is connected to the diaphragm 2 by a spray connection method, the fluorescent agent 3 is connected to the lower outer wall surface of the diaphragm 2 by a coating connection method, and the fluorescent agent 3 has the characteristics of corrosion resistance, the intermediate coating 4 is made of quartz sand 7 material, and has the characteristics of high hardness, good wear resistance and strong chemical stability, the primer 5 is made of epoxy resin 6 material, and has the characteristics of good chemical resistance, strong heat resistance, strong adhesion and good electrical insulation performance, and the topcoat 1 is made of titanium dioxide 9 material, and has the characteristics of good hiding power, high gloss and strong stability.

[0021] When in use, the operator can use light to illuminate the steel structure at night, and quickly determine whether the outer side paint 1 of the protective coating of the steel structure is peeling off by observing whether the fluorescent agent 3 of the protective coating on the outer side of the steel structure reflects light. This can quickly and conveniently provide the operator with a function of quickly and conveniently inspecting whether the protective coating is intact. At the same time, through the setting of the diaphragm 2, the fluorescent agent 3, the intermediate coating 4 and the primer 5 on the lower side of the diaphragm 2 are protected to prevent chemical reactions between the topcoat 1 and the intermediate coating 4, avoid yellowing, falling off and other problems in the coating, and isolate the topcoat 1 and the intermediate coating 4 to prevent mutual penetration between them, thereby ensuring the quality and performance of the coating, enhancing the durability and anti-aging properties of the coating, and extending the service life of the coating.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A protective coating for the surface of a steel structure, comprising a topcoat (1), characterized in that: A diaphragm (2) is arranged at an inner position on the lower side of the topcoat (1), a fluorescent agent (3) is arranged on the lower outer surface of the diaphragm (2), an intermediate coating (4) is arranged at an inner position on the lower side of the diaphragm (2), and a primer (5) is arranged at a lower position of the intermediate coating (4).

2. The protective coating for the surface of a steel structure according to claim 1, characterized in that: The diaphragm (2) is made of polyurethane (8) material.

3. The protective coating for the surface of a steel structure according to claim 2, characterized in that: The diaphragm (2) is connected to the intermediate coating (4) by means of an adhesive connection, and the topcoat (1) is connected to the diaphragm (2) by means of a spray connection.

4. The protective coating for the surface of a steel structure according to claim 3, characterized in that: The fluorescent agent (3) is connected to the lower outer wall surface of the diaphragm (2) by coating connection.

5. The protective coating for the surface of a steel structure according to claim 1, characterized in that: The intermediate coating (4) is made of quartz sand (7) material.

6. The protective coating for the surface of a steel structure according to claim 1, characterized in that: The primer (5) is made of epoxy resin (6) material.

7. The protective coating for the surface of a steel structure according to claim 1, characterized in that: The topcoat (1) is made of titanium dioxide (9) material.

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