Phosphorus-based flame-retardant heat-insulating coating structure

Abstract

The utility model relates to the technical field of heat-insulating coatings, in particular to a phosphorus flame-retardant heat-insulating coating structure, which comprises a substrate and a heat-insulating component, the heat-insulating component comprises a primer layer, a phosphorus flame-retardant layer, a heat-insulating layer and a finish paint layer, the primer layer is connected with the substrate, the phosphorus flame-retardant layer is connected with the primer layer, the heat-insulating layer is connected with the phosphorus flame-retardant layer, and the finish paint layer is connected with the heat-insulating layer. And the finish paint layer is connected with the heat insulation layer, so that the phosphorus flame-retardant layer is arranged in the base material, the flame-retardant efficiency can be effectively achieved, and huge economic loss caused by large-area continuous combustion of the base material is avoided.

Description

Technical Field

[0001] This utility model relates to the field of heat insulation coating technology, and in particular to a phosphorus-based flame-retardant heat insulation coating structure. Background Technology

[0002] Traditional coating structures, as a key technology for material surface modification, are widely used in fields such as corrosion resistance, wear resistance, and self-cleaning. Through multi-layer composite design, functional gradient distribution can be achieved, improving the bonding strength between the coating and the substrate, as well as its environmental adaptability. However, traditional coatings do not possess thermal insulation properties.

[0003] Existing coating structures typically have a heat insulation layer on the substrate. The heat insulation layer is usually made of ceramic microparticles. Ceramic microparticles can hinder heat transfer, and their porous or lattice structure scatters phonons, reducing heat conduction. At the same time, the air gaps between the microparticles further reduce convective and radiative heat transfer, achieving efficient heat insulation. Thus, the heat insulation effect can be enhanced through the heat insulation layer, thereby giving the coating a certain heat insulation effect.

[0004] However, while existing substrates can provide some heat insulation, they cannot completely retard flames. In the event of a fire, existing combustible substrates will continue to burn over a large area, resulting in huge economic losses. Utility Model Content

[0005] The purpose of this utility model is to provide a phosphorus-based flame-retardant and heat-insulating coating structure, which aims to solve the problem that although existing substrates can provide a certain heat insulation effect, they cannot completely retard flames. When a fire occurs, the existing combustible substrates will continue to burn over a large area, resulting in huge economic losses.

[0006] To achieve the above objectives, this utility model provides a phosphorus-based flame-retardant and heat-insulating coating structure, including a substrate,

[0007] It also includes thermal insulation components,

[0008] The heat insulation component includes a primer layer, a phosphorus-based flame retardant layer, a heat insulation layer, and a topcoat layer. The primer layer is connected to the substrate and located on one side of the substrate. The phosphorus-based flame retardant layer is connected to the primer layer and located on the side of the primer layer away from the substrate. The heat insulation layer is connected to the phosphorus-based flame retardant layer and located on the side of the phosphorus-based flame retardant layer away from the primer layer. The topcoat layer is connected to the heat insulation layer and located on the side of the heat insulation layer away from the phosphorus-based flame retardant layer.

[0009] The heat insulation component also includes an anti-corrosion layer, which is connected to the topcoat layer and located on one side of the topcoat layer.

[0010] The heat insulation component further includes a moisture-proof layer, which is connected to the anti-corrosion layer and located on the side of the anti-corrosion layer away from the topcoat layer.

[0011] The heat insulation component further includes a wear-resistant layer, which is connected to the moisture-proof layer and located on the side of the moisture-proof layer away from the anti-corrosion layer.

[0012] The heat insulation component further includes a decorative layer, which is connected to the wear-resistant layer and located on the side of the wear-resistant layer away from the moisture-proof layer.

[0013] This invention discloses a phosphorus-based flame-retardant and heat-insulating coating structure. The primer layer enhances the adhesion between the phosphorus-based flame-retardant layer and the substrate, thereby improving the overall performance of the coating. The phosphorus-based flame-retardant layer undergoes thermal decomposition to generate phosphoric acid or polyphosphoric acid, promoting surface dehydration and carbonization to form a dense carbonized layer. This layer isolates oxygen and heat transfer, preventing further combustion. Simultaneously, the PO· free radicals generated from the decomposition of the phosphorus-based flame retardant in the layer capture H· and HO· free radicals in the combustion reaction, interrupting the combustion chain reaction and inhibiting flame spread. Therefore, by incorporating the phosphorus-based flame-retardant layer into the substrate, effective flame-retardant efficiency is achieved, thus avoiding significant economic losses caused by large-area continuous combustion of the substrate. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the structure of the phosphorus-based flame-retardant and heat-insulating coating according to the first embodiment of this utility model.

[0016] In the diagram: 101-substrate, 102-primer layer, 103-phosphorus flame retardant layer, 104-heat insulation layer, 105-topcoat layer, 106-anti-corrosion layer, 107-moisture-proof layer, 108-wear-resistant layer, 109-decorative layer. Detailed Implementation

[0017] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0018] The first embodiment of this application is:

[0019] Please see Figure 1 ,in Figure 1 This is a schematic diagram of the structure of the phosphorus-based flame-retardant and heat-insulating coating according to the first embodiment of this utility model.

[0020] This utility model provides a phosphorus-based flame-retardant and heat-insulating coating structure, including a substrate 101 and a heat-insulating component. The heat-insulating component includes a primer layer 102, a phosphorus-based flame-retardant layer 103, a heat-insulating layer 104, a topcoat layer 105, an anti-corrosion layer 106, a moisture-proof layer 107, a wear-resistant layer 108, and a decorative layer 109. This solution addresses the problem that while existing substrates can provide some heat insulation, they cannot completely retard flames. In the event of a fire, existing combustible substrates will continue to burn over a large area, resulting in significant economic losses. Therefore, this solution can be used when it is necessary to improve the flame retardancy of the substrate.

[0021] In this embodiment, the substrate 101 serves as the base for the coating and is typically the material to be coated, including plastic, wood, or building surfaces.

[0022] The phosphorus-based flame retardant layer 103 is connected to the primer layer 102 and located on the side of the primer layer 102 away from the substrate 101. The heat insulation layer 104 is connected to the phosphorus-based flame retardant layer 103 and located on the side of the phosphorus-based flame retardant layer 103 away from the primer layer 102. The topcoat layer 105 is connected to the heat insulation layer 104 and located on the side of the heat insulation layer 104 away from the phosphorus-based flame retardant layer 103. The primer layer 102 covers and is connected to the substrate 101, and the phosphorus-based flame retardant layer 103 is connected to the primer layer 102. The primer layer 102 can improve the phosphorus-based flame retardancy. The adhesion between layer 103 and the substrate 101 allows the primer layer 102 to improve the overall performance of the coating. The phosphorus-based flame retardant layer 103 is a phosphorus-based flame retardant containing red phosphorus. Through thermal decomposition, the phosphorus-based flame retardant layer 103 generates phosphoric acid or polyphosphoric acid, promoting dehydration and carbonization of the material surface to form a dense carbonized layer. This isolates oxygen and heat transfer, preventing further combustion. Simultaneously, the PO· free radicals generated by the decomposition of the phosphorus-based flame retardant in the phosphorus-based flame retardant layer 103 can capture H· and HO· free radicals in the combustion reaction, interrupting the combustion chain reaction and thus inhibiting the spread of flame. Furthermore, the carbonized layer... The porous structure effectively slows down heat transfer. The heat insulation layer 104 is composed of ceramic microparticles, which hinder heat transfer. Their porous or lattice structure scatters phonons, reducing heat conduction. Simultaneously, the air gaps between the microparticles further reduce convective and radiative heat transfer, achieving highly efficient heat insulation. Thus, the heat insulation layer 104 enhances the heat insulation effect. The topcoat layer 105 is attached to the heat insulation layer 104. The topcoat layer 105 protects and improves the weather resistance of the coating. This allows the primer layer 102 to improve the adhesion between the phosphorus-based flame retardant layer 103 and the substrate 101, enabling the primer layer 102 to... The overall performance of the coating is improved by the phosphorus-based flame retardant layer 103, which can thermally decompose to generate phosphoric acid or polyphosphoric acid, promoting the dehydration and carbonization of the material surface and forming a dense carbonized layer. This isolates oxygen and heat transfer, preventing further combustion of the material. At the same time, the PO· free radicals generated by the decomposition of the phosphorus-based flame retardant in the phosphorus-based flame retardant layer 103 can capture H· and HO· free radicals in the combustion reaction, interrupting the combustion chain reaction and inhibiting the spread of flame. Thus, by setting the phosphorus-based flame retardant layer 103 in the substrate 101, the flame retardant efficiency can be effectively achieved, thereby avoiding the huge economic losses caused by the continuous combustion of a large area of ​​the substrate.

[0023] Secondly, the anti-corrosion layer 106 is connected to the topcoat layer 105 and is located on one side of the topcoat layer 105. The anti-corrosion layer 106 is epoxy resin. After the epoxy resin is cured, it forms a continuous, non-porous, and dense coating film, which isolates corrosive substances such as water, oxygen, and chloride ions from contact with the metal substrate. The anti-corrosion layer 106 can prevent the entire substrate from corroding in humid, acidic, or alkaline environments, thus extending the overall lifespan of the coating and the substrate.

[0024] Meanwhile, the moisture-proof layer 107 is connected to the anti-corrosion layer 106 and is located on the side of the anti-corrosion layer 106 away from the topcoat layer 105. The moisture-proof layer 107 is a hydrophobic resin. The hydrophobic resin molecules contain a large number of non-polar groups such as fluorine, silicon or long-chain alkyl groups. These groups have extremely low surface energy, and the water droplet contact angle can reach more than 120°, forming a "lotus effect", making it difficult for water to adhere or penetrate. Thus, the moisture-proof layer 107 can prevent water vapor from penetrating and avoid the coating from becoming damp, which would cause the flame retardant to fail or the heat insulation performance to decrease.

[0025] In addition, the wear-resistant layer 108 is connected to the moisture-proof layer 107 and is located on the side of the moisture-proof layer 107 away from the anti-corrosion layer 106. The wear-resistant layer 108 is a wear-resistant resin. The wear-resistant resin provides basic wear resistance through a high-hardness matrix, adds hard fillers to withstand friction, optimizes interface bonding to reduce peeling, and disperses stress with the help of tough components, thereby comprehensively improving wear resistance. The wear-resistant layer 108 can improve the wear resistance of the coating surface, prevent coating damage due to friction and scratching, and maintain flame-retardant and heat-insulating performance.

[0026] Finally, the decorative layer 109 is connected to the wear-resistant layer 108 and is located on the side of the wear-resistant layer 108 away from the moisture-proof layer 107. The decorative layer 109 is attached to the wear-resistant layer 108. The decorative layer 109 is a polyester with mixed pigments, which allows the decorative layer 109 to provide color, gloss or texture to meet aesthetic requirements without sacrificing flame retardant and heat insulation performance.

[0027] When using the phosphorus-based flame-retardant and heat-insulating coating structure of this embodiment, the primer layer 102 can improve the adhesion between the phosphorus-based flame-retardant layer 103 and the substrate 101, thereby improving the overall performance of the coating. The phosphorus-based flame-retardant layer 103 can thermally decompose to generate phosphoric acid or polyphosphoric acid, promoting the dehydration and carbonization of the material surface to form a dense carbonized layer, thereby isolating oxygen and heat transfer and preventing further combustion of the material. At the same time, the PO· free radicals generated by the decomposition of the phosphorus-based flame retardant in the phosphorus-based flame-retardant layer 103 can capture H· and HO· free radicals in the combustion reaction, interrupting the combustion chain reaction and inhibiting the spread of flame. Thus, by setting the phosphorus-based flame-retardant layer 103 in the substrate 101, the flame-retardant efficiency can be effectively achieved, thereby avoiding the huge economic losses caused by the continuous combustion of a large area of ​​the substrate.

[0028] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A phosphorus-based flame-retardant and heat-insulating coating structure, comprising a substrate, characterized in that, It also includes thermal insulation components, The heat insulation component includes a primer layer, a phosphorus-based flame retardant layer, a heat insulation layer, and a topcoat layer. The primer layer is connected to the substrate and located on one side of the substrate. The phosphorus-based flame retardant layer is connected to the primer layer and located on the side of the primer layer away from the substrate. The heat insulation layer is connected to the phosphorus-based flame retardant layer and located on the side of the phosphorus-based flame retardant layer away from the primer layer. The topcoat layer is connected to the heat insulation layer and located on the side of the heat insulation layer away from the phosphorus-based flame retardant layer.

2. The phosphorus-based flame-retardant and heat-insulating coating structure as described in claim 1, characterized in that, The heat insulation component also includes an anti-corrosion layer, which is connected to the topcoat layer and located on one side of the topcoat layer.

3. The phosphorus-based flame-retardant and heat-insulating coating structure as described in claim 2, characterized in that, The thermal insulation component also includes a moisture-proof layer, which is connected to the anti-corrosion layer and located on the side of the anti-corrosion layer away from the topcoat layer.

4. The phosphorus-based flame-retardant and heat-insulating coating structure as described in claim 3, characterized in that, The thermal insulation component also includes a wear-resistant layer, which is connected to the moisture-proof layer and located on the side of the moisture-proof layer away from the anti-corrosion layer.

5. The phosphorus-based flame-retardant and heat-insulating coating structure as described in claim 4, characterized in that, The thermal insulation component also includes a decorative layer, which is connected to the wear-resistant layer and located on the side of the wear-resistant layer away from the moisture-proof layer.

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