Hydrophobic polyester fabric

Abstract

The utility model provides a hydrophobic polyester fabric, and belongs to the technical field of textile fabrics. The base cloth layer is made of polyester woven fabric; a periodic rough area is formed on the surface of the base cloth layer through plasma patterning etching, and a non-etching area is coated with a hydrophobic coating to form a coating hydrophobic area; the width of the periodic rough area is less than or equal to 1mm. The hydrophobic layer is formed on the surface of the polyester fabric through plasma etching and hydrophobic coating, so that the polyester fabric has an excellent hydrophobic effect, meanwhile, the influence of coating of the coating on the breathability of the polyester fabric can be reduced, and the polyester fabric still has certain breathability. And the coating has a certain thickness, so that the etching region can be protected, the probability that the etching region is subjected to external friction is reduced, and the service life of the etching region is prolonged. The hydrophobic coating has waterproofness, the periodic rough area formed by etching has super-hydrophobicity, and the combination of the hydrophobic coating and the periodic rough area enables the polyester fabric to have a certain waterproof effect.

Description

Technical Field

[0001] This utility model relates to the field of textile fabric technology, specifically to a hydrophobic polyester fabric. Background Technology

[0002] Hydrophobic enhancement of polyester fabrics is mainly achieved through chemical coating, water-repellent finishing, plasma treatment, and micro / nano structure construction. Chemical coating involves applying a hydrophobic coating to the surface of the polyester fabric. Its advantages include significant hydrophobicity, effectively preventing water intrusion, good abrasion and wash resistance, and the ability to maintain hydrophobicity for a relatively long time. However, it can affect the breathability of the polyester fabric. Plasma treatment uses plasma to etch nanoscale pits onto the fabric surface, achieving superhydrophobicity. However, it is easily damaged by wear and tear, affecting the hydrophobicity. Therefore, this invention provides a hydrophobic polyester fabric combining coating and plasma etching. Utility Model Content

[0003] The purpose of this invention is to provide a hydrophobic polyester fabric.

[0004] To solve the above-mentioned technical problems, the purpose of this utility model is achieved as follows:

[0005] A hydrophobic polyester fabric includes: a base fabric layer; said base fabric layer is a woven polyester fabric;

[0006] The surface of the base fabric layer is patterned by plasma etching to form periodic rough regions, and a hydrophobic coating is applied to the non-etched regions to form hydrophobic coating regions; the width of the periodic rough regions is less than or equal to one millimeter.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme, the hydrophobic coating is a fluorosilane hydrophobic coating.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme, the thickness of the fluorosilane hydrophobic coating is 1-5 μm.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme, the pattern is a honeycomb structure; the periodic rough area is located at the edge of the honeycomb and is net-like; the hydrophobic coating area is located at the center of the honeycomb and is in the form of several independent regular hexagonal shapes.

[0010] Based on the above scheme and as a preferred embodiment of the above scheme, an electrospun PVDF nanofiber web layer is composited on one side of the base fabric layer; the electrospun PVDF nanofiber web layer covers the periodic rough area and the hydrophobic coating area.

[0011] The beneficial effects of this invention are as follows: This invention forms a hydrophobic layer on the surface of polyester fabric through plasma etching and coating with a hydrophobic coating, giving the polyester fabric excellent hydrophobic properties. Simultaneously, because the periodic rough areas formed by etching and the hydrophobic areas formed by coating are separated, the impact of the coating on the breathability of the polyester fabric is reduced, allowing the polyester fabric to still possess a certain degree of breathability. The periodic rough areas formed by plasma etching are less than or equal to one millimeter in width and are positioned between adjacent hydrophobic areas of the coating. Due to the thickness of the coating, the etched areas are protected, reducing the probability of external friction and extending the lifespan of the etched areas. The hydrophobic coating is waterproof, and the periodic rough areas formed by etching are superhydrophobic; the combination of these two properties gives the polyester fabric a certain degree of waterproofing. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the layer structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the surface of the base fabric layer of this utility model.

[0014] In the figure: 1. Base fabric layer; 2. Periodic rough area; 3. Hydrophobic coating; 4. Hydrophobic area of ​​coating; 5. Electrospun PVDF nanofiber web layer. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0016] like Figure 1 and Figure 2 As shown, a hydrophobic polyester fabric includes: a base fabric layer 1, which is a woven polyester fabric.

[0017] The surface of the base fabric layer 1 is patterned by plasma etching to form periodic rough regions 2, and a hydrophobic coating 3 is applied to the non-etched areas to form hydrophobic coating regions 4. The width of the periodic rough regions 2 is less than or equal to one millimeter. In this embodiment, the etching pattern is a honeycomb structure, with the periodic rough regions 2 located at the edge of the honeycomb, having an etching width of 0.5 mm, resembling a honeycomb mesh. The hydrophobic coating regions 4 are located at the center of the honeycomb, forming several independent regular hexagonal shapes. Together, they completely cover the surface of the base fabric layer 1, forming a hydrophobic layer on the surface of the base fabric layer 1, giving the base fabric layer 1 excellent hydrophobic properties.

[0018] Preferably, the hydrophobic coating 3 is a fluorosilane hydrophobic coating with a thickness of 1-5 μm. The fluorosilane hydrophobic coating possesses the following characteristics: ① Excellent hydrophobicity: The fluorosilane molecule contains fluorine atoms and silicon-oxygen bonds. Fluorine atoms have extremely low surface energy, while silicon-oxygen bonds can form stable chemical bonds on the material surface, giving the coating excellent hydrophobic properties. The contact angle of water on its surface can typically reach over 150°, effectively preventing water and other liquids from penetrating into the coated material; ② Good chemical stability: Fluorosilane has strong chemical corrosion resistance, resisting the erosion of various chemicals such as acids, alkalis, and salts. It does not easily react with most chemicals and can maintain stable performance in harsh chemical environments, extending the service life of the coated material; ③ Low coefficient of friction: The fluorosilane coating has a smooth surface and a low coefficient of friction, which not only helps reduce the friction between the object's surface and other substances... The low-friction surface reduces friction and wear, and makes the surface of the object easier to clean, less prone to dust, oil and other contaminants, because contaminants are difficult to adhere to and are more easily carried away by water or airflow; ④ Good wear resistance: Fluorosilane hydrophobic coatings can improve the hardness and wear resistance of the material surface to a certain extent. It can withstand a certain degree of friction and scratching without being easily damaged, protecting the surface of the coated material from mechanical damage, especially suitable for material surfaces that need to be used for a long time and are easily subjected to friction; ⑤ Good transparency: Fluorosilane hydrophobic coatings are usually transparent and do not affect the appearance and optical properties of the coated material. This is very important for some materials that require transparency, such as glass and plastics, as it can achieve hydrophobic function while maintaining the original transparency of the material.

[0019] During plasma etching, high-energy ions bombard the polyester surface, forming a micro-nano-scale rough structure, increasing the surface energy, making the contact angle >150°, and achieving a superhydrophobic effect.

[0020] To enhance protection, this embodiment incorporates an electrospun PVDF nanofiber web layer 5 on one side of the base fabric layer 1. The electrospun PVDF nanofiber web layer 5 covers the periodically roughened area 2 and the hydrophobic coating area 4, providing excellent protection. The electrospun PVDF nanofiber web layer 5 possesses superhydrophobic properties, superior chemical properties, and good mechanical properties, not only providing excellent protection but also improving the hydrophobicity of the polyester fabric surface.

[0021] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A hydrophobic polyester fabric, characterized in that, include: The base fabric layer (1) is a polyester woven fabric. The surface of the base fabric layer (1) is patterned by plasma etching to form periodic rough regions (2), and a hydrophobic coating (3) is applied to the non-etched areas to form hydrophobic coating regions (4); the width of the periodic rough regions (2) is less than or equal to one millimeter.

2. The hydrophobic polyester fabric according to claim 1, characterized in that, The hydrophobic coating (3) is a fluorosilane hydrophobic coating.

3. The hydrophobic polyester fabric according to claim 2, characterized in that, The thickness of the fluorosilane hydrophobic coating is 1-5 μm.

4. The hydrophobic polyester fabric according to claim 1, characterized in that, The pattern is a honeycomb structure; the periodic rough area (2) is located at the edge of the honeycomb and is net-like; the hydrophobic coating area (4) is located at the center of the honeycomb and is in the form of several independent regular hexagonal shapes.

5. The hydrophobic polyester fabric according to claim 1, characterized in that, The base fabric layer (1) is coated with an electrospun PVDF nanofiber web layer (5) on one side; the electrospun PVDF nanofiber web layer (5) covers the periodic rough area (2) and the hydrophobic coating area (4).

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