Anti-fouling finish paint structure for TPU (Thermoplastic Polyurethane) substrate

Abstract

The utility model relates to the related field of finish paint, in particular to an anti-fouling finish paint structure for a TPU (Thermoplastic Polyurethane) substrate, which comprises the TPU substrate, a siloxane coating, a first adhesion promoter layer, an antibacterial coating, a second adhesion promoter layer, a PTFE (Polytetrafluoroethylene) coating and the like. The siloxane coating and the PTFE coating are arranged, the siloxane coating can enhance the flexibility and wear resistance of the TPU substrate and ensure that the TPU substrate is not prone to being abraded in daily use, the PTFE coating has extremely low surface energy, water, oil and other pollutants are not prone to being attached to the TPU substrate, the anti-pollution capacity of the TPU substrate is greatly improved, and the TPU substrate is not prone to being abraded in the daily use process. Contaminants such as stains, fingerprints and oil stains are not prone to being attached to the surface of the TPU substrate, cleaning is more convenient and faster, material aging and damage caused by improper cleaning or long-term accumulation of dust and impurities are reduced, the service life of the TPU substrate is prolonged, and economic losses are reduced.

Description

Technical Field

[0001] This utility model relates to the field of topcoat, and in particular to an anti-fouling topcoat structure for TPU substrates. Background Technology

[0002] TPU is an engineering plastic with high elasticity and abrasion resistance. It combines the flexibility of rubber with the processability of plastic and maintains good physical properties over a wide temperature range. Due to these characteristics, TPU is widely used in various fields, such as footwear, sporting goods, automotive parts, and medical devices. TPU substrates refer to products with thermoplastic polyurethane as the base material or bottom layer. During use, these TPU substrates often attract dust, stains, and oil due to the environment, making cleaning inconvenient. These dust, stains, and oil also reduce the overall aesthetics of the TPU substrate, and long-term accumulation of stains can lead to surface degradation, accelerating the aging process and reducing the lifespan of the TPU substrate, resulting in economic losses. Summary of the Invention

[0003] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides an anti-fouling topcoat structure for TPU substrates to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an anti-fouling topcoat structure for TPU substrate, comprising a TPU substrate, wherein the upper surface of the TPU substrate is coated from bottom to top with a siloxane coating, a first adhesion promoter layer, an antibacterial coating, a second adhesion promoter layer and a PTFE coating.

[0005] The antibacterial coating is made of nano-silver.

[0006] Preferably, the PTFE coating contains a plurality of equally spaced alumina nanoparticles, and the PTFE coating completely covers the alumina nanoparticles.

[0007] The beneficial effects of this utility model are:

[0008] This invention incorporates a siloxane coating and a PTFE coating. The siloxane coating enhances the flexibility and abrasion resistance of the TPU substrate, ensuring it is less prone to wear during daily use. The PTFE coating, with its extremely low surface energy, makes it difficult for water, oil, and other contaminants to adhere, significantly improving the TPU substrate's stain resistance. The surface of the TPU substrate is less susceptible to stains, fingerprints, oil, and other contaminants, making cleaning easier and faster. This reduces material aging and damage caused by improper cleaning or long-term accumulation of dust and impurities, thus extending the lifespan of the TPU substrate and minimizing economic losses. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is the utility model Figure 1 Schematic diagram of the cross-sectional structure at point A in the middle.

[0011] The components are: TPU substrate-1, siloxane coating-2, first adhesion promoter layer-3, antibacterial coating-4, second adhesion promoter layer-5, PTFE coating-6, and alumina nanoparticles-7. Detailed Implementation

[0012] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0013] like Figure 1 As shown, this utility model provides an anti-fouling topcoat structure for TPU substrates, including a TPU substrate 1;

[0014] like Figure 1 and Figure 2 As shown, in this embodiment, the upper surface of the TPU substrate 1 is uniformly coated from bottom to top with a siloxane coating 2, a first adhesion promoter layer 3, an antibacterial coating 4, a second adhesion promoter layer 5, and a PTFE coating 6. The first adhesion promoter layer 3 improves the stability of the connection between the siloxane coating 2 and the antibacterial coating 4, while the second adhesion promoter layer 5 improves the stability of the connection between the antibacterial coating 4 and the PTFE coating 6.

[0015] The antibacterial coating 4 is made of nano-silver, which enhances the antibacterial ability of the TPU substrate 1 and indirectly provides antibacterial protection for users.

[0016] In this embodiment, a number of equally spaced alumina nanoparticles 7 are embedded inside the PTFE coating 6, and the PTFE coating 6 completely covers the alumina nanoparticles 7. The alumina nanoparticles 7 improve the wear resistance of the TPU substrate 1, which is beneficial to improving the service life of the TPU substrate 1.

[0017] In this embodiment, the thickness of the first adhesion promoter layer 3 and the second adhesion promoter layer 5 is 1μm~1.5μm. This thickness can meet the requirements, ensuring good adhesion while effectively controlling costs.

[0018] Specifically, during use, the siloxane coating 2 provides flexibility and initial stain resistance to the TPU substrate 1, while the PTFE coating 6 improves the stain resistance of the TPU substrate 1, reduces the adhesion of dust and impurities to the TPU substrate 1, improves the aesthetics of the TPU substrate 1, and reduces the amount of cleaning work required for the TPU substrate 1.

[0019] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A stain-resistant topcoat structure for a TPU substrate, comprising a TPU substrate; Its features are, The upper surface of the TPU substrate is coated from bottom to top with a siloxane coating, a first adhesion promoter layer, an antibacterial coating, a second adhesion promoter layer, and a PTFE coating. The antibacterial coating is made of nano-silver.

2. The anti-fouling topcoat structure for TPU substrates according to claim 1, characterized in that: The PTFE coating contains several equally spaced alumina nanoparticles, and the PTFE coating completely covers the alumina nanoparticles.

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