Corrosion-resistant coating heat-preservation color steel plate

Abstract

The utility model provides a corrosion-resistant coating heat preservation color steel plate, which relates to the technical field of color steel plates and comprises a metal base plate, a heat preservation layer and a surface coating, the heat preservation layer is arranged on one side of the metal base plate, the surface coating is arranged on the other side of the metal base plate, and the heat preservation layer is formed by compounding a vacuum heat insulation plate and a closed-cell foam layer. The vacuum heat insulation plate is attached to the metal base plate, the outer side of the vacuum heat insulation plate is filled with the closed-cell foam layer, the surface coating comprises an anti-corrosion primer layer, a weather-proof middle layer and a self-cleaning surface layer, and the anti-corrosion primer layer forms an anti-rust protection film on the surface of the metal base plate by arranging the anti-corrosion primer layer, the weather-proof middle layer and the self-cleaning surface layer. The weather-proof middle layer enhances tolerance to different climates, the self-cleaning surface layer decomposes stains and keeps clean under illumination, the heat preservation layer is arranged, the heat preservation layer is formed by compositing a vacuum heat insulation plate and a closed-cell foam layer, heat preservation and mechanical strength are both considered, and building energy consumption is reduced.

Description

Technical Field

[0001] This utility model relates to the field of color steel plate technology, and in particular to a corrosion-resistant coated heat-insulating color steel plate. Background Technology

[0002] Color-coated steel refers to pre-painted steel sheets, which are steel sheets with an organic coating. They have advantages such as good corrosion resistance, bright colors, beautiful appearance, convenient processing and forming, and the original strength of steel sheets, as well as lower cost.

[0003] A prior art high-stability sound-insulating and heat-insulating foam color steel plate, publication number CN220035910U, includes a substrate, a color steel plate on the substrate, a counterweight base plate below the substrate, a sound insulation layer between the counterweight base plate and the substrate, the sound insulation layer including a sound insulation frame and sound insulation cotton, a foam board below the counterweight base plate, a flame-retardant protective plate below the foam board, primary sliding grooves on both sides of the counterweight base plate, secondary sliding grooves at both ends of the foam board, and primary and secondary sliders at both ends of the flame-retardant protective plate. The primary slider is inserted into the primary sliding groove, and the secondary slider is placed on the secondary sliding groove.

[0004] However, the color steel plate has insufficient corrosion resistance. Ordinary coatings are easily corroded in humid, salt spray or industrial pollution environments, leading to rust on the substrate and shortening its service life. Utility Model Content

[0005] The purpose of this utility model is to solve the problems existing in the prior art and to propose a corrosion-resistant coated heat-insulating color steel plate.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a corrosion-resistant coated heat-insulating color steel plate, comprising a metal substrate, a heat-insulating layer, and a surface coating, wherein the heat-insulating layer is disposed on one side of the metal substrate, and the surface coating is disposed on the other side of the metal substrate, the heat-insulating layer is composed of a vacuum insulation board and a closed-cell foam layer, wherein the vacuum insulation board is attached to the metal substrate, and the closed-cell foam layer is filled on the outside of the vacuum insulation board, and the surface coating comprises an anti-corrosion primer layer, a weather-resistant intermediate layer, and a self-cleaning top layer, wherein the surface of the metal substrate is sequentially coated with the anti-corrosion primer layer, the weather-resistant intermediate layer, and the self-cleaning top layer.

[0007] Preferably, the self-cleaning surface layer contains titanium dioxide particles with a particle size of 10-50 nm, and the coating thickness is 10-20 μm.

[0008] Preferably, the thermal conductivity of the vacuum insulation board is ≤0.005 W / (m·K), and the density of the closed-cell foam layer is 40-60 kg / m³. 3 .

[0009] Preferably, the anti-corrosion primer layer is an epoxy zinc yellow primer.

[0010] Preferably, the metal substrate has integrated snap-fit ​​connecting edges on both sides, the snap-fit ​​connecting edges including a flange fixedly connected to one side of the metal substrate and a groove fixedly connected to the other side of the metal substrate.

[0011] Preferably, a sealing strip is embedded in the groove, and the sealing strip is made of EPDM rubber.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting an anti-corrosion primer layer, a weather-resistant intermediate layer and a self-cleaning top layer, the anti-corrosion primer layer forms a rust-proof protective film on the surface of the metal substrate, the weather-resistant intermediate layer enhances the resistance to different climates, the self-cleaning top layer decomposes stains under light and keeps it clean, and by setting a heat insulation layer, which is composed of a vacuum insulation board and a closed-cell foam layer, both heat insulation and mechanical strength are taken into account, and the building energy consumption is reduced.

[0014] 2. In this utility model, by setting an integrated snap-fit ​​connecting edge, a quick and stable connection is achieved through the cooperation of the flange and the groove. The groove is embedded with a EPDM rubber sealing strip, which fills the gap under pressure deformation, thereby enhancing waterproof and airtightness. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a corrosion-resistant coated thermal insulation color steel plate is provided for this utility model;

[0016] Figure 2 In this utility model Figure 1 A side-view three-dimensional structural diagram;

[0017] Figure 3 In this utility model Figure 1 The front view;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0019] Illustrations: 1. Metal substrate; 2. Anti-corrosion primer layer; 3. Weather-resistant intermediate layer; 4. Self-cleaning top layer; 5. Vacuum insulation board; 6. Closed-cell foam layer; 7. Groove; 8. Flange; 9. Sealing strip. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0022] like Figures 1-4 As shown, a corrosion-resistant coated heat-insulating color steel plate includes a metal substrate 1, an insulation layer, and a surface coating. The insulation layer is disposed on one side of the metal substrate 1, and the surface coating is disposed on the other side of the metal substrate 1. The insulation layer is composed of a vacuum insulation board 5 and a closed-cell foam layer 6. The vacuum insulation board 5 is attached to the metal substrate 1, and the closed-cell foam layer 6 fills the outer side of the vacuum insulation board 5. The surface coating includes an anti-corrosion primer layer 2, a weather-resistant intermediate layer 3, and a self-cleaning top layer 4. The surface of the metal substrate 1 is sequentially coated with the anti-corrosion primer layer 2, the weather-resistant intermediate layer 3, and the self-cleaning top layer 4.

[0023] The self-cleaning surface layer 4 contains titanium dioxide particles with a particle size of 10-50nm and a coating thickness of 10-20μm. The particle size and coating thickness ensure that the titanium dioxide particles can fully exert their photocatalytic activity, while ensuring that the coating has good adhesion and stability, and will not affect the self-cleaning effect due to being too thick or too thin.

[0024] In this technical solution, the multi-layer structure synergistically enhances the overall performance of the color steel plate; each layer of the surface coating plays a different role. The anti-corrosion primer layer 2 is in direct contact with the metal substrate 1, providing it with basic anti-corrosion protection and preventing the metal from rusting in humid, chemically corrosive, or other environments; the weather-resistant intermediate layer 3 enhances the coating system's tolerance to different climatic conditions and extends the coating's service life; the self-cleaning top layer 4, with its titanium dioxide particles with a particle size of 10-50nm, exhibits photocatalytic self-cleaning function under light conditions, enabling the stains on the surface of the color steel plate to be decomposed, maintaining a clean appearance, and reducing manual cleaning costs.

[0025] Furthermore, the thermal conductivity of the vacuum insulation panel 5 is ≤0.005W / (m·K), and the density of the closed-cell foam layer 6 is 40-60kg / m³. 3 This ensures that the insulation layer can stably and efficiently perform its thermal insulation function under different environmental conditions, thereby reducing the building's energy consumption.

[0026] In this technical solution, the insulation layer can improve the thermal insulation performance; the vacuum insulation board 5, with its extremely low thermal conductivity, effectively prevents heat from being transferred through conduction, providing efficient thermal insulation for the color steel plate; the closed-cell foam layer 6 not only further enhances the thermal insulation effect, but also effectively prevents heat loss caused by air convection. While ensuring good thermal insulation performance, it also takes into account the mechanical strength and weight of the material, making it easy to install and use.

[0027] In addition, the anti-corrosion primer layer 2 is an epoxy zinc yellow primer; as a commonly used primer type in the field of metal corrosion protection, epoxy zinc yellow primer has good compatibility with the metal substrate 1 and the subsequent weather-resistant intermediate layer 3, which can ensure the stability and reliability of the entire coating system.

[0028] Furthermore, the epoxy zinc yellow primer has good adhesion and rust prevention properties, and can form a dense protective film on the surface of the metal substrate 1; its salt spray resistance is ≥1000 hours (ASTM B117 standard), which enables the color steel plate to maintain good anti-corrosion performance for a long time in high salt spray environments such as coastal areas, extending the service life of the metal substrate 1, and thus improving the overall durability of the color steel plate.

[0029] like Figure 1 and Figure 2 As shown, the metal substrate 1 has integrated snap-fit ​​connecting edges on both sides. The snap-fit ​​connecting edges include a flange 8 fixedly connected to one side of the metal substrate 1 and a groove 7 fixedly connected to the other side of the metal substrate 1. The groove 7 is embedded with a sealing strip 9, which is made of EPDM rubber. This connection structure facilitates large-scale production and on-site construction, improves construction efficiency, reduces construction costs, and ensures the overall aesthetics and structural stability of the color steel plate after installation.

[0030] In addition, the integrated snap-fit ​​connection design greatly simplifies the installation process of the color steel plate and enhances its waterproof and airtightness. The flange 8, which is fixedly connected to one side of the metal substrate 1, and the groove 7, which is fixedly connected to the other side, enable a quick and stable connection between adjacent color steel plates. The sealing strip 9 is made of EPDM rubber, which has excellent weather resistance, aging resistance and sealing performance. When the flange 8 and the groove 7 are locked together, the sealing strip 9 is deformed under pressure and fills the gaps, effectively preventing moisture and air penetration, enhancing the waterproof and airtightness of the joints, and improving the overall performance of the color steel plate in building applications.

[0031] Working principle: This corrosion-resistant coated insulated color steel plate consists of a metal substrate, an insulation layer, and a surface coating. The surface coating, from the inside out, consists of an anti-corrosion primer layer, a weather-resistant intermediate layer, and a self-cleaning top layer. The anti-corrosion primer layer, made of epoxy zinc yellow primer, adheres tightly to the metal substrate, forming a rust-proof protective film with strong salt spray resistance. The weather-resistant intermediate layer enhances resistance to different climates and extends the coating life. The self-cleaning top layer contains titanium dioxide particles of a specific particle size, which decompose stains under light and keep the surface clean. The insulation layer is a composite of a vacuum insulation board and a closed-cell foam layer. The former has an extremely low thermal conductivity, effectively blocking heat conduction, while the latter has a high closed-cell rate and low thermal conductivity, balancing insulation and mechanical strength, and reducing building energy consumption.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A corrosion-resistant coated thermal insulation color steel plate, comprising a metal substrate (1), an insulation layer, and a surface coating, characterized in that: The insulation layer is disposed on one side of the metal substrate (1), and the surface coating is disposed on the other side of the metal substrate (1). The insulation layer is composed of a vacuum insulation board (5) and a closed-cell foam layer (6). The vacuum insulation board (5) is attached to the metal substrate (1), and the closed-cell foam layer (6) is filled on the outside of the vacuum insulation board (5). The surface coating includes an anti-corrosion primer layer (2), a weather-resistant intermediate layer (3), and a self-cleaning surface layer (4). The surface of the metal substrate (1) is coated with the anti-corrosion primer layer (2), the weather-resistant intermediate layer (3), and the self-cleaning surface layer (4) in sequence.

2. The corrosion-resistant coated thermal insulation color steel plate according to claim 1, characterized in that: The self-cleaning surface layer (4) contains titanium dioxide particles with a particle size of 10-50nm and a coating thickness of 10-20μm.

3. The corrosion-resistant coated thermal insulation color steel plate according to claim 1, characterized in that: The thermal conductivity of the vacuum insulation board (5) is ≤0.005 W / (m·K), and the density of the closed-cell foam layer (6) is 40-60 kg / m³.

4. The corrosion-resistant coated thermal insulation color steel plate according to claim 1, characterized in that: The anti-corrosion primer layer (2) is an epoxy zinc yellow primer.

5. The corrosion-resistant coated thermal insulation color steel plate according to claim 1, characterized in that: The metal substrate (1) has integrated snap-fit ​​connecting edges on both sides. The snap-fit ​​connecting edges include a flange (8) fixedly connected to one side of the metal substrate (1) and a groove (7) fixedly connected to the other side of the metal substrate (1).

6. The corrosion-resistant coated thermal insulation color steel plate according to claim 5, characterized in that: The groove (7) is embedded with a sealing strip (9), which is made of EPDM rubber.

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