Composite reinforced high-toughness anti-oxidation spandex filament multi-protection structure

Abstract

The utility model discloses a kind of composite reinforced high-toughness anti-oxidation spandex filament multiple protection structures, belong to spandex filament technical field, its technical scheme main points include spandex filament body, the surface of spandex filament body is sequentially provided with function reinforcing layer and anti-oxidation protective layer from inside to outside, function reinforcing layer is tightly covered in the surface of spandex filament body, anti-oxidation protective layer is tightly covered in the surface of function reinforcing layer, spandex filament body is made of polyether type spandex, the morphology of spandex filament body is continuous filament, its molecular chain forms the basic form of adaptation outer layer structure by introducing long-chain flexible group, solve the existing part in textile processing, spandex filament is stretched, printing and dyeing high temperature treatment for many times, ordinary protection structure is difficult to resist sustained mechanical stress and oxidation erosion, cause fabric elasticity degradation, especially for medical bandage spandex filament, not enough for anti-oxidation in storage, easy to cause performance attenuation to affect the problem of bandaging effect.

Description

Technical Field

[0001] This utility model relates to the field of spandex yarn technology, and in particular to a composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure. Background Technology

[0002] Spandex yarn is widely used in textiles, medical, and sports fields due to its high elasticity and excellent resilience. However, it faces multiple challenges in production, storage, processing, and use. The molecular chain structure of spandex yarn is easily affected by oxygen and temperature. Long-term exposure or high-temperature environments lead to significant oxidative degradation, resulting in decreased toughness, loss of elasticity, and shortened product lifespan.

[0003] In some textile processing, spandex yarn undergoes multiple stretching, dyeing, and high-temperature treatments. Ordinary protective structures are unable to withstand continuous mechanical stress and oxidative erosion, resulting in deterioration of fabric elasticity. In particular, for spandex yarn used in medical bandages, insufficient oxidation prevention during storage can easily lead to performance degradation and affect the bandaging effect.

[0004] To address this, a composite reinforced high-toughness anti-oxidation spandex yarn with multiple protective structures is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a composite reinforced, high-toughness, anti-oxidation spandex yarn multi-protection structure, which can solve the problem that in some existing textile processing, spandex yarn undergoes multiple stretching, dyeing, and high-temperature treatments, and ordinary protective structures are unable to resist continuous mechanical stress and oxidative erosion, resulting in the deterioration of fabric elasticity. In particular, for spandex yarn used in medical bandages, insufficient anti-oxidation during storage can easily lead to performance degradation and affect the bandaging effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure, comprising a spandex yarn body, wherein a functional reinforcement layer and an anti-oxidation protection layer are sequentially disposed on the surface of the spandex yarn body from the inside to the outside, the functional reinforcement layer tightly covering the surface of the spandex yarn body, and the anti-oxidation protection layer tightly covering the surface of the functional reinforcement layer.

[0007] Preferably, the spandex filament body is made of polyether-type spandex, and the spandex filament body is in the form of a continuous filament, and its molecular chain forms a basic form that adapts to the outer layer structure by introducing long-chain flexible groups.

[0008] Preferably, the functional reinforcement layer is a continuous coating layer formed by uniformly mixing a nano-reinforcing phase, an elastomer, and a crosslinking agent, wherein the nano-reinforcing phase is selected from nanocellulose, the elastomer is nitrile rubber or silicone, and the crosslinking agent is an isocyanate compound.

[0009] Preferably, the anti-oxidation protective layer is formed by melting and blending an antioxidant, a barrier material, and a heat-resistant additive to form a continuous coating structure, wherein the antioxidant is a phosphite compound, the barrier material is polyvinylidene chloride, and the heat-resistant additive is ceramic micropowder.

[0010] Preferably, an interface transition layer is provided between the spandex filament body and the functional reinforcement layer and the anti-oxidation protective layer. The interface transition layer is a silane coupling agent coating. The interface transition layer is uniformly coated on the contact surface between the spandex filament body and the functional reinforcement layer and the functional reinforcement layer and the anti-oxidation protective layer, and achieves a tight bond between the spandex filament body, the functional reinforcement layer and the anti-oxidation protective layer through chemical bonding.

[0011] Preferably, the functional reinforcement layer and the spandex filament body are concentrically arranged, the anti-oxidation protective layer and the functional reinforcement layer are concentrically arranged, and both the functional reinforcement layer and the anti-oxidation protective layer are distributed along the length direction of the spandex filament body to form a continuous filament structure.

[0012] Preferably, the spandex filament body, the functional reinforcement layer, and the anti-oxidation protective layer are formed into an inseparable integral structure through a melt co-extrusion composite process, and there are no obvious gaps between the spandex filament body, the interface transition layer, the functional reinforcement layer, and the anti-oxidation protective layer, which extend synchronously to form a continuous filament.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application sets up a functional reinforcement layer, which is a uniform mixture and continuous coating of nanocellulose, elastomer and crosslinking agent. With the help of stress dispersion of nano-reinforcing phase, impact absorption of elastomer, and three-dimensional network structure formed by crosslinking agent, it works synergistically with spandex yarn body to effectively improve overall tear resistance and fatigue resistance, and ensure that it plays a stable reinforcing role in tensile deformation.

[0015] 2. This application establishes an anti-oxidation protective layer, which is formed by the melt blending of antioxidants, barrier materials and heat-resistant additives to form a continuous coating. The antioxidants actively neutralize the active free radicals generated during the oxidation of the spandex yarn, the barrier materials physically isolate the oxidizing medium, and the heat-resistant additives enhance high-temperature stability, thus constructing a multi-protection system to delay the oxidative degradation of the spandex yarn and meet the long-term protection needs in high-temperature and complex environments. Attached Figure Description

[0016] Figure 1 This is an overall structural diagram of the composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the spandex yarn body in this utility model;

[0018] Figure 3This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0019] In the diagram, 1. Spandex yarn body; 2. Functional reinforcement layer; 3. Interface transition layer; 4. Anti-oxidation protective layer. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 The present invention provides the following technical solution:

[0022] A composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure includes a spandex yarn body 1. From the inside to the outside, a functional reinforcement layer 2 and an anti-oxidation protection layer 4 are sequentially disposed on the surface of the spandex yarn body 1. The functional reinforcement layer 2 tightly covers the surface of the spandex yarn body 1, and the anti-oxidation protection layer 4 tightly covers the surface of the functional reinforcement layer 2.

[0023] In this embodiment: the spandex filament body 1 is based on polyether-type spandex, with long-chain flexible groups in the molecular chain providing basic elasticity and support. Under stress, the molecular chain expands and curls to achieve deformation buffering. In the functional reinforcement layer 2, nanocellulose forms an enhanced skeleton to disperse external forces, nitrile rubber or silicone absorbs impact, and isocyanate crosslinking agent forms a three-dimensional network to restrict slippage, synergistically improving tear resistance and fatigue resistance. In the anti-oxidation protective layer 4, phosphite antioxidants neutralize free radicals and block oxidation, polyvinylidene chloride forms a barrier to block oxidizing media, ceramic micropowder enhances high-temperature stability, and the interface transition... Layer 3 chemically bonds adjacent layers with a silane coupling agent, eliminating interfacial tension and preventing delamination. It forms a seamless, integrated structure through melt co-extrusion. The concentric arrangement of each layer ensures uniform stress distribution. Through a closed-loop protection system of deformation buffering, external force dispersion, and oxidation barrier, it achieves high-performance and stable application in complex environments. This solves the problem that in some existing textile processing, spandex yarns undergo multiple stretching, dyeing, and high-temperature treatments, and ordinary protective structures are unable to withstand continuous mechanical stress and oxidative erosion, resulting in deterioration of fabric elasticity. This is especially true for spandex yarns used in medical bandages, where insufficient oxidation protection during storage can easily lead to performance degradation and affect the bandaging effect.

[0024] Specifically, such as Figure 3 As shown, the spandex filament body 1 is made of polyether-type spandex. The spandex filament body 1 is in the form of a continuous filament, and its molecular chain forms a basic form that adapts to the outer layer structure by introducing long-chain flexible groups.

[0025] Specifically, such as Figure 3 As shown, the functional reinforcement layer 2 is a continuous coating layer formed by uniformly mixing a nano-reinforcing phase, an elastomer, and a crosslinking agent. The nano-reinforcing phase is selected from nanocellulose, the elastomer is nitrile rubber or silicone, and the crosslinking agent is an isocyanate compound.

[0026] Specifically, such as Figure 3 As shown, the anti-oxidation protective layer 4 is a continuous coating structure formed by melting and blending antioxidants, barrier materials and heat-resistant additives. The antioxidant is a phosphite compound, the barrier material is polyvinylidene chloride, and the heat-resistant additive is ceramic powder.

[0027] In this embodiment: the spandex filament body 1, which is made of polyether-type spandex and has long-chain flexible groups, provides a suitable basic shape and elastic support for the outer structure, ensuring the overall stability and coordination during deformation. The functional reinforcement layer 2, through the uniform mixing and continuous coating of nanocellulose, elastomer and crosslinking agent, effectively improves the tear resistance and fatigue resistance of the spandex filament body 1 by means of the synergistic effect of reinforcement, toughening and curing. The anti-oxidation protective layer 4 is formed by the melt blending of antioxidant, barrier material and heat-resistant additive to form a continuous coating, realizing multiple protections of active anti-oxidation, physical barrier and high temperature stability, and delaying the oxidative degradation of the spandex filament body 1.

[0028] Specifically, such as Figure 3 As shown, an interface transition layer 3 is provided between the spandex yarn body 1 and the functional reinforcement layer 2 and the anti-oxidation protective layer 4. The interface transition layer 3 is a silane coupling agent coating. The interface transition layer 3 is uniformly coated on the contact surface between the spandex yarn body 1 and the functional reinforcement layer 2 and between the functional reinforcement layer 2 and the anti-oxidation protective layer 4, and achieves a tight bond between the spandex yarn body 1, the functional reinforcement layer 2 and the anti-oxidation protective layer 4 through chemical bonding.

[0029] Specifically, such as Figure 1 and Figure 3 As shown, the functional reinforcement layer 2 and the spandex filament body 1 are concentrically arranged, and the anti-oxidation protective layer 4 and the functional reinforcement layer 2 are concentrically arranged. Both the functional reinforcement layer 2 and the anti-oxidation protective layer 4 are distributed along the length direction of the spandex filament body 1 to form a continuous filament structure.

[0030] Specifically, such as Figure 3 As shown, the spandex filament body 1, the functional reinforcement layer 2, and the anti-oxidation protective layer 4 are formed into an inseparable integrated structure through a melt co-extrusion composite process. There are no obvious gaps between the spandex filament body 1, the interface transition layer 3, the functional reinforcement layer 2, and the anti-oxidation protective layer 4, and they extend synchronously to form a continuous filament.

[0031] In this embodiment: the interface transition layer 3 forms chemical bonds between adjacent layers through a silane coupling agent, eliminating material compatibility differences to avoid delamination and peeling, enhancing the overall structure. The concentric arrangement of each layer ensures uniform stress. The continuous filament distribution adapts to the usage form of the spandex filament body 1, improving stability during the stretching process. The melt co-extrusion process enables the spandex filament body 1, the interface transition layer 3, the functional reinforcement layer 2, and the anti-oxidation protective layer 4 to form a seamless integrated structure. The synchronously extending continuous form further ensures the long-term synergy of multiple protective functions, adapting to the stable application of the spandex filament body 1 in complex environments.

[0032] Working Principle: The system achieves both high toughness and oxidation resistance through integrated functional coordination. The spandex filament body 1 is made of polyether-type spandex, with long-chain flexible groups introduced into its molecular chain, giving it excellent flexibility and elasticity. This serves as a basic framework providing stable support for the outer structure. Simultaneously, when subjected to external stretching, the long-chain flexible groups can buffer deformation through the expansion and contraction of the molecular chain, providing basic elastic recovery capability for the overall structure. The functional reinforcing layer 2 is a continuous coating layer formed by uniformly mixing nanocellulose, nitrile rubber or silicone, and isocyanate crosslinking agents. Nanocellulose, with its high specific surface area and high strength, forms a microscale reinforcing framework in the elastomer matrix, effectively transferring and dispersing external forces and reducing local stress concentration. Meanwhile, nitrile... Rubber or silicone, as an elastomer, can absorb mechanical impact through the high elastic deformation of its own molecular chains, synergizing with the elasticity of the spandex filament body 1. Isocyanate crosslinking agents form a three-dimensional network structure in the system, connecting the nano-reinforcing phase, elastomer, and spandex filament body 1 molecular chains through chemical bonds, limiting excessive slippage of molecular chains, maintaining structural stability while ensuring toughness, thereby significantly improving the overall tear resistance and fatigue resistance. The anti-oxidation protective layer 4 is a continuous coating formed by the melt blending of phosphite antioxidants, polyvinylidene chloride, and ceramic micropowder. Phosphite antioxidants, as free radical scavengers, can actively neutralize the active free radicals generated during the oxidation of spandex filaments, blocking the oxidation chain reaction. Polyvinylidene chloride, with its dense molecular structure, forms... A physical barrier effectively prevents external oxidizing media such as oxygen, moisture, and ultraviolet rays from contacting the spandex filament body 1. Ceramic micropowder utilizes its high-temperature resistance to enhance the thermal stability of the protective layer, preventing degradation or structural damage under high-temperature conditions and ensuring continued anti-oxidation performance even at extreme temperatures. The interface transition layer 3 is a silane coupling agent coating, located between the spandex filament body 1 and the functional reinforcement layer 2, and between the functional reinforcement layer 2 and the anti-oxidation protective layer 4. Its molecules can form chemical bonds with the materials of adjacent layers at both ends. One end reacts with the polar groups in the spandex filament body 1 and the functional reinforcement layer 2, while the other end forms covalent bonds with the elastomer of the functional reinforcement layer 2 and the barrier material of the anti-oxidation protective layer 4, thereby eliminating interfacial tension between different materials and solving compatibility issues. To address the issue of poor elasticity and prevent delamination and peeling during stretching or long-term use, the integrated structure formed by melt co-extrusion creates a seamless, continuous filamentous whole consisting of the spandex filament body 1, interface transition layer 3, functional reinforcement layer 2, and anti-oxidation protective layer 4. The concentric arrangement of each layer ensures uniform stress distribution. When the structure is subjected to stretching, friction, or exposure to an oxidizing environment, the core layer and functional reinforcement layer 2 work together to resist deformation through molecular chain flexibility and a three-dimensional network structure. The anti-oxidation protective layer 4 simultaneously activates its active antioxidant and physical barrier functions, while the interface transition layer 3 maintains the bonding strength of each layer through chemical bonding. These three elements form a closed-loop protection system that buffers deformation, disperses external forces, and blocks oxidation, ultimately enabling the spandex filament body 1 to achieve high-performance and stable application in complex environments.This invention addresses the problem in some existing textile processing methods where spandex yarns, after repeated stretching, dyeing, and high-temperature treatment, are difficult for ordinary protective structures to withstand continuous mechanical stress and oxidative erosion, leading to fabric elasticity degradation. This is particularly problematic for spandex yarns used in medical bandages, where insufficient oxidation protection during storage easily causes performance decline, affecting bandaging effectiveness.

[0033] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements 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 composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure, comprising a spandex yarn body (1), characterized in that: The surface of the spandex yarn body (1) is provided with a functional reinforcement layer (2) and an anti-oxidation protective layer (4) from the inside to the outside. The functional reinforcement layer (2) tightly covers the surface of the spandex yarn body (1), and the anti-oxidation protective layer (4) tightly covers the surface of the functional reinforcement layer (2).

2. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 1, characterized in that: The spandex filament body (1) is made of polyether type spandex. The spandex filament body (1) is in the form of continuous filaments. Its molecular chain forms a basic form that adapts to the outer layer structure by introducing long-chain flexible groups.

3. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 1, characterized in that: The functional reinforcement layer (2) is formed by uniformly mixing a nano-reinforcing phase, an elastomer and a crosslinking agent to form a continuous coating layer, wherein the nano-reinforcing phase is selected from nanocellulose, the elastomer is nitrile rubber or silicone, and the crosslinking agent is an isocyanate compound.

4. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 1, characterized in that: The antioxidant protective layer (4) is formed by melting and blending antioxidants, barrier materials and heat-resistant additives to form a continuous coating structure, wherein the antioxidant is a phosphite compound, the barrier material is polyvinylidene chloride, and the heat-resistant additive is ceramic powder.

5. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 1, characterized in that: An interface transition layer (3) is provided between the spandex yarn body (1), the functional reinforcement layer (2), and the anti-oxidation protective layer (4). The interface transition layer (3) is a silane coupling agent coating. The interface transition layer (3) is uniformly coated on the contact surfaces between the spandex yarn body (1) and the functional reinforcement layer (2) and between the functional reinforcement layer (2) and the anti-oxidation protective layer (4), and achieves a tight bond between the spandex yarn body (1), the functional reinforcement layer (2), and the anti-oxidation protective layer (4) through chemical bonding.

6. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 1, characterized in that: The functional reinforcement layer (2) and the spandex filament body (1) are concentrically arranged, and the anti-oxidation protection layer (4) and the functional reinforcement layer (2) are concentrically arranged. The functional reinforcement layer (2) and the anti-oxidation protection layer (4) are both distributed along the length direction of the spandex filament body (1) to form a continuous filament structure.

7. The composite reinforced high-toughness anti-oxidation spandex yarn multi-protection structure according to claim 5, characterized in that: The spandex filament body (1), the functional reinforcement layer (2) and the anti-oxidation protective layer (4) are formed into an inseparable integrated structure through a melt co-extrusion composite process. There are no obvious gaps between the spandex filament body (1), the interface transition layer (3), the functional reinforcement layer (2) and the anti-oxidation protective layer (4) and they extend synchronously to form a continuous filament.

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