A degradable tri-proof fabric

Abstract

This invention discloses a biodegradable, three-proof (oil-proof, water-proof, and gas-proof) fabric, comprising, from top to bottom, a three-proof functional surface layer, an adhesive layer, and a biodegradable fiber layer; the upper surface of the three-proof functional surface layer has a microscopic uneven structure; the biodegradable fiber layer is a blend of polylactic acid (PLA) fiber and poly(3-hydroxybutyrate) fiber. This invention employs a multi-layer structure to achieve both the three-proof and gas-proof functions and the biodegradability of the fabric. The microscopic uneven structure of the three-proof functional surface layer increases the contact angle between the fabric surface and pollutants, thereby achieving an oil- and water-repellent three-proof effect. The biodegradable layer, made by blending polylactic acid (PLA) fiber and poly(3-hydroxybutyrate) fiber, achieves the fabric's biodegradability. The source of the blended fibers no longer depends on petrochemical products, and under appropriate conditions, it can achieve complete biodegradation, generating harmless small molecules, making it environmentally friendly.

Description

Technical Field

[0001] This utility model relates to the field of textile technology, and in particular to a biodegradable, three-proof fabric. Background Technology

[0002] In recent years, with the change in people's consumption concepts, functional textiles have become a research hotspot for textile companies around the world. Three-proof fabrics, due to their superior waterproof, oil-proof, and stain-proof properties, are widely used in various fields such as outdoor clothing, medical protection, and fashionable home furnishings.

[0003] Many three-proof fabrics are made of wool and other materials. For example, patent number CN202320503403.2, patent name "A Three-proof Fabric", uses Teflon fabric, which is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. It is almost insoluble in all solvents and can be fixed on wool. The Teflon fabric can block water, oil and stains. Then, the guide yarn can conduct electricity and conduct static electricity on the fabric. However, graphene, wool and other materials cannot be degraded by this method, and the three-proof coating used contains fluorine, which causes serious environmental pollution.

[0004] For example, patent number CN202211513896.4, entitled "A Method for Preparing Graphene Composite Antistatic Biodegradable PLA Plastic," achieves the production of degradable graphene into PLA material. However, this method is time-consuming, costly, and difficult, and only focuses on the material aspect.

[0005] For example, patent number CN202320075061.9, patent name antibacterial and biodegradable polyester fabric, uses biodegradable polyester fabric, but polyester itself has weak biodegradability and takes a long time to degrade.

[0006] For example, patent number CN202211247780.0, entitled "A Method for Preparing a Completely Degradable Antibacterial, Antiviral, and Wash-resistant Fabric," first prepares a fabric with surface grafted isocyanate groups, then prepares a fabric modified with a hyperbranched polymer, and finally grafts a quaternary ammonium salt to prepare a fabric modified with a hyperbranched polymer quaternary ammonium salt. However, this method is time-consuming and difficult.

[0007] In summary, the following problems still exist with biodegradable, waterproof, and shockproof fabrics:

[0008] 1. Degradation is difficult and costly. The production of biodegradable materials is too time-consuming and the production process is complex. Currently, it is only at the level of materials research.

[0009] 2. It is not environmentally friendly. Many of the three-proof finishing agents on the market today use organic fluorine materials, and fluorides have been proven to cause serious environmental pollution. Utility Model Content

[0010] In view of this, in order to solve the problems of high manufacturing difficulty and poor biodegradability, this utility model proposes a biodegradable three-proof fabric.

[0011] To achieve the above objectives, the present invention adopts the following technical solution:

[0012] A biodegradable three-proof fabric includes a three-proof functional surface layer, an adhesive layer and a biodegradable fiber layer distributed from top to bottom;

[0013] The upper surface of the three-proof functional layer has a microscopic uneven structure;

[0014] The biodegradable fiber layer is made of a blend of polylactic acid fiber and poly(3-hydroxybutyrate) fiber.

[0015] As a further improvement to the above technical solution:

[0016] Preferably, the thickness of the three-proof functional surface layer is 0.1 mm.

[0017] Preferably, the three-proof functional surface layer is a nano-level organosilicon coating three-proof functional surface layer.

[0018] Preferably, the adhesive layer is a polyacrylate polymer adhesive layer.

[0019] Preferably, the adhesive layer contains moisture-absorbing microcapsules.

[0020] Preferably, the biodegradable fiber layer has a honeycomb structure with a negative Poisson's ratio.

[0021] Compared with existing technologies, the beneficial effects of this utility model are:

[0022] This invention employs a multi-layer structure to achieve both the three-proof (oil-proof, water-proof, and gas-proof) and biodegradable functions of the fabric. The micro-uneven structure of the three-proof surface layer increases the contact angle between the fabric surface and pollutants, and also increases the surface tension between the pollutants and the fabric, making it difficult for polluted liquids to penetrate, thus achieving an oil- and water-repellent three-proof effect. The biodegradable layer is made of a honeycomb-like porous fabric formed by blending and weaving polylactic acid (PLA) fibers and poly(3-hydroxybutyrate) fibers. Due to the biodegradability of the materials themselves, coupled with the porous structure of the fabric, the degradation rate is accelerated, resulting in a fabric with excellent biodegradability. The blended fibers are derived from biomass materials, no longer relying on petrochemical products, and can achieve complete biodegradation under appropriate conditions, generating harmless small molecules, which is environmentally friendly.

[0023] The three-proof functional layer uses nano-level organic silicon coating. Due to the superior extensibility of organic silicon material, a thin (micro-nano thickness) protective coating is formed on the surface of the fabric while maintaining the softness and comfort of the fabric. Moreover, the material is environmentally friendly and pollution-free.

[0024] The biodegradable layer structure adopts a negative Poisson's ratio structure design. In a repeated rubbing environment, the structure changes repeatedly, and energy is continuously absorbed and released, which promotes the degradation rate of the material.

[0025] The adhesive contains moisture-absorbing microcapsules that can promote the proliferation of microorganisms during the degradation process, thereby enhancing the degradation capacity. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the biodegradable fiber layer blended structure of this utility model;

[0028] Figure 3 This is a schematic diagram of the biodegradable fiber layer negative Poisson's ratio honeycomb structure of this utility model.

[0029] In the diagram: 1. Three-proof functional surface layer; 2. Adhesive layer; 21. Moisture-absorbing microcapsule; 3. Biodegradable fiber layer; 31. Polylactic acid fiber; 32. Poly(3-hydroxybutyrate) fiber. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] This technical solution is attached. Figure 1 As shown, it mainly consists of three parts:

[0034] 1. Surface Layer - Three-proof Functional Layer: The three-proof functional layer adopts nano-level organic silicone coating three-proof functional surface layer 1. By forming a micro-uneven structure on the fabric surface, it increases the contact angle between the fabric surface and pollutants, thereby achieving an oil-repellent and water-repellent effect. Its thickness is 0.1mm.

[0035] II. Bottom Layer – Biodegradable Fiber Layer 3, as shown in the attached image. Figure 2 As shown, the biodegradable fiber layer 3 is made of polylactic acid fiber 31 (PLA) and poly(3-hydroxybutyrate) fiber 32 (PHB). Under the action of microorganisms in the natural environment, poly(3-hydroxybutyrate) fiber 32 (PHB) will be preferentially degraded, promoting the large-scale reproduction of microorganisms, thereby promoting the degradation of polylactic acid fiber 31 (PLA) and accelerating the degradation process of polylactic acid fiber 31 (PLA) alone.

[0036] As attached Figure 3 As shown, the biodegradable fiber layer 3 adopts a honeycomb structure with a negative Poisson's ratio. During fabric processing, it is repeatedly rubbed, and the negative Poisson's ratio structure changes repeatedly, with energy being continuously absorbed and released. In the environment of repeated rubbing, the structure changes repeatedly, and energy is continuously absorbed and released. At the same time, it provides sufficient energy for the moisture-absorbing microcapsules 21 during the degradation process, thereby promoting the large-scale reproduction of microorganisms and improving the degradation ability. In addition, the negative Poisson's ratio structure enhances the strength of the fabric and increases the number of times and frequency of use of the fabric.

[0037] 3. Intermediate layer - Adhesive layer 2: Adhesive layer 2 is added between the three-proof functional surface layer 1 and the biodegradable fiber layer 3 to improve the adhesion and service life of the three-proof coating. At the same time, adhesive layer 2 contains moisture-absorbing microcapsules 21, which can promote the proliferation of microorganisms during the degradation process and improve the degradation ability of the adhesive interface. Adhesive layer 2 is a polyacrylate polymer adhesive.

[0038] As described above, this technical solution addresses the challenges of manufacturing by utilizing different levels and structures. It improves the performance of biodegradable materials through the compounding of different raw materials, material modification, and the adoption of different processing methods, enabling them to be easily processed and achieving large-scale manufacturing. By utilizing the negative Poisson's ratio structure, energy is continuously absorbed and released, which facilitates degradation.

[0039] The process of creating this technical solution:

[0040] 1. Prepare polylactic acid (PLA) and poly(3-hydroxybutyrate) (PHB), both of which are biodegradable fibers with a fiber diameter of 0.5 mm;

[0041] 2. Polylactic acid fiber 31 and poly(3-hydroxybutyrate) fiber 32, biodegradable fibers, are blended in a 2:1 mass ratio and woven into a negative Poisson's ratio honeycomb fabric with a thickness of 0.9~1.2mm.

[0042] 3. The temperature is controlled at 40 degrees Celsius, the time is 10-30 minutes, and the pressure is 10N. A resin finishing method is used to coat the fabric surface with nano-sized organosilicon materials. At the same time, a polyacrylate polymer adhesive is used to enhance adhesion and extend service life.

[0043] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A degradable tri-proof fabric, characterized in that: It includes a three-proof functional surface layer (1), an adhesive layer (2) and a biodegradable fiber layer (3) distributed from top to bottom. The upper surface of the three-proof functional surface layer (1) has a microscopic concave-convex structure; The biodegradable fiber layer (3) is made of a blend of polylactic acid fiber (31) and poly(3-hydroxybutyrate) fiber (32); The biodegradable fiber layer (3) has a honeycomb structure with a negative Poisson's ratio.

2. The degradable tri-proof fabric according to claim 1, characterized in that: The thickness of the three-proof functional surface layer (1) is 0.1 mm.

3. The biodegradable three-proof fabric according to claim 1, characterized in that: The three-proof functional surface layer (1) is a nano-level organosilicon coating three-proof functional surface layer (1).

4. The biodegradable three-proof fabric according to claim 1, characterized in that: The adhesive layer (2) is a polyacrylate polymer adhesive layer.

5. The biodegradable three-proof fabric according to claim 3, characterized in that: The adhesive layer (2) contains moisture-absorbing microcapsules (21).

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