Shielding heat shrink tube

Abstract

The utility model discloses a shielding heat-shrinkable tube, which relates to the technical field of heat-shrinkable tubes and comprises a tube body made of heat-shrinkable materials, the outer layer of the tube body is coated with a metal shielding layer, and the metal shielding layer is composed of three metal layers which are aluminum foil, nickel foil and silver-plated copper foil from outside to inside in sequence. An insulating layer is arranged between the metal shielding layer and the tube body and is made of a polytetrafluoroethylene material; a reinforcing layer is arranged between the insulating layer and the pipe body; according to the technical scheme provided by the utility model, the three metal shielding layers, including the aluminum foil, the nickel foil and the silver-plated copper foil, are adopted, so that electromagnetic interference can be effectively shielded, and the shielding effectiveness is improved. And the reinforcing layer arranged in the pipe body is formed by weaving high-strength glass fibers, so that the mechanical strength and durability of the product are remarkably improved. And meanwhile, the insulating layer is made of a high-performance polytetrafluoroethylene material, so that good dielectric property can be kept in a high-temperature environment, and electrical insulation between the metal shielding layer and the pipe body is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of heat shrinkable tubes, in particular to a shielding heat shrinkable tube. Background Art

[0002] With the rapid development of modern electronic devices, the protection requirements for transmission lines such as wires and cables are getting higher and higher. Especially in high-frequency and high-power application scenarios, electromagnetic interference (EMI) has become one of the main factors affecting the normal operation of devices. Although traditional heat shrinkable tubes can provide basic insulation and physical protection, they often cannot effectively shield electromagnetic interference. In addition, harsh working environments also pose higher requirements on heat shrinkable tubes, such as high temperature, humidity, and corrosive environments, etc.

[0003] To address these problems, some heat shrinkable tubes with shielding functions have been developed in the existing technology. However, these heat shrinkable tubes usually have only one or two metal shielding layers, with limited shielding effects, and they may not have sufficient mechanical strength, high-temperature resistance, moisture-proof, and fire-proof capabilities. Therefore, developing a shielding heat shrinkable tube with excellent comprehensive performance has become an urgent problem to be solved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the existing technology and provide a shielding heat shrinkable tube to solve the problems in the background art.

[0005] In view of this, the utility model provides a shielding heat shrinkable tube, including

[0006] a tube body made of heat shrinkable material, with a metal shielding layer coated on the outer layer of the tube body. The metal shielding layer is composed of three metal layers, which are aluminum foil, nickel foil, and silver-plated copper foil in sequence from the outside to the inside;

[0007] an insulating layer is arranged between the metal shielding layer and the tube body, and the insulating layer is made of polytetrafluoroethylene material;

[0008] a reinforcing layer is arranged between the insulating layer and the tube body, and the reinforcing layer is woven from high-strength glass fibers.

[0009] Optionally, the surface of the silver-plated copper foil included in the metal shielding layer is covered with an antioxidant coating, and the antioxidant coating is made of titanium dioxide nanoparticles.

[0010] Optionally, a moisture-proof layer is arranged on the inner wall of the tube body, and the moisture-proof layer is made of silicone rubber.

[0011] Optionally, a protective layer is laid on the outer wall of the metal shielding layer, and the protective layer is made of wear-resistant polyimide film.

[0012] Optionally, the surface of the protective layer is coated with a fluorescent marking coating.

[0013] Optionally, a fireproof and heat-insulating layer is laid on the inner side of the tube body and on the inner wall of the moisture-proof layer, and the fireproof and heat-insulating layer is made of ceramic fiber material.

[0014] As can be seen from the above technical solutions, the embodiments of the present utility model have the following advantages:

[0015] 1. A shielding heat shrinkable tube of the present utility model, through the structural arrangement of adopting a three-layer metal shielding layer, including aluminum foil, nickel foil and silver-plated copper foil, can effectively shield electromagnetic interference and improve the shielding efficiency. And the reinforcing layer built in the tube body is woven from high-strength glass fibers, significantly improving the mechanical strength and durability of the product. At the same time, the insulating layer uses a high-performance polytetrafluoroethylene material, which can maintain good dielectric properties in high-temperature environments, ensuring electrical insulation between the metal shielding layer and the tube body.

[0016] 2. A shielding heat shrinkable tube of the present utility model adopts a moisture-proof layer, a fireproof and heat-insulating layer, a protective layer and an antioxidant coating, thereby ensuring comprehensive protection measures. The moisture-proof layer effectively prevents moisture from entering and avoids electrical failures. The fireproof and heat-insulating layer prevents high temperature from damaging internal wires or sensitive components. The antioxidant coating effectively prevents the oxidation of the silver-plated layer and extends the service life.

[0017] Moreover, the protective layer is made of wear-resistant polyimide film, and the surface is coated with a fluorescent marking coating, which not only protects the entire shielding heat shrinkable tube from external wear, but also facilitates the identification and positioning of the heat shrinkable tube under low-light conditions.

[0018] These features and advantages of the present utility model will be detailedly disclosed in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model with reference to the drawings:

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is the present utility model Figure 1 The enlarged view at A in;

[0022] Figure 3 is a schematic end face structure diagram of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the metal shielding layer of the present utility model.

[0024] Explanation of the accompanying drawings: 1. Tube body; 2. Reinforcement layer; 3. Insulation layer; 4. Metal shielding layer; 41. Aluminum foil; 42. Nickel foil; 43. Silver-plated copper foil; 5. Protective layer; 6. Fluorescent marking coating; 7. Moisture-proof layer; 8. Fireproof and heat-insulating layer. DETAILED DESCRIPTION

[0025] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0026] A shielded heat shrinkable tube according to an embodiment of the utility model will be described in detail below with reference to the accompanying drawings.

[0027] Example

[0028] For easier understanding, see Figures 1 to 4 The utility model provides an embodiment of a shielded heat shrink tube, comprising a tube body 1 made of a heat shrink material, the outer layer of the tube body 1 is coated with a metal shielding layer 4, the metal shielding layer 4 is composed of three metal layers, which are aluminum foil 41, nickel foil 42, and silver-plated copper foil 43 from the outside to the inside;

[0029] An insulating layer 3 is provided between the metal shielding layer 4 and the tube body 1. The insulating layer 3 is made of high-performance polytetrafluoroethylene PTFE with a thickness of 0.1 mm, and can withstand high temperatures above 250°C and maintain good dielectric properties;

[0030] A reinforcement layer 2 is provided between the insulating layer 3 and the tube body 1 , and the reinforcement layer 2 is woven from high-strength glass fibers.

[0031] It should be noted that the pipe body 1 is made of heat shrinkable material, preferably polyvinyl chloride (PVC) or polyolefins and other materials with good heat shrinkage performance. The reinforcement layer 2 is woven from high-strength glass fibers to improve the mechanical strength and durability of the overall structure. The insulation layer 3 is made of polytetrafluoroethylene (PTFE) material to ensure the electrical insulation performance between the metal shielding layer 4 and the pipe body 1.

[0032] The preferred thickness of the aluminum foil 41 is about 0.05 mm, which is used for preliminary electromagnetic wave shielding; the preferred thickness of the nickel foil 42 is about 0.03 mm, which increases the shielding effect and improves the corrosion resistance; the preferred thickness of the silver-plated copper foil 43 is about 0.02 mm, and the thickness of the silver plating layer is about 0.002 mm, which further enhances the shielding effectiveness and reduces the contact resistance through the good conductivity of silver.

[0033] In some embodiments, the surface of the silver-plated copper foil 43 included in the metal shielding layer 4 is covered with an antioxidant coating.

[0034] It should be noted that an antioxidant coating made of titanium dioxide nanoparticles is covered on the inner surface of the silver-plated copper foil 43 to prevent the silver-plated layer from oxidizing.

[0035] In some embodiments, a moisture-proof layer 7 is provided on the inner wall of the tube body 1. The moisture-proof layer 7 is made of silicone rubber and has a thickness of 0.05 mm, which can effectively prevent moisture from entering.

[0036] It should be noted that the moisture-proof layer 7 is made of silicone rubber material, which can effectively prevent moisture from entering the heat-shrinkable tube.

[0037] In some embodiments, a protective layer 5 is laid on the outer wall of the metal shielding layer 4. The protective layer 5 is made of wear-resistant polyimide film. A fluorescent marking coating 6 is coated on the surface of the protective layer 5.

[0038] It should be noted that the protective layer 5 is made of wear-resistant polyimide film to protect the entire shielded heat-shrinkable tube from external abrasion. The fluorescent marking coating 6 facilitates the identification and positioning of the heat-shrinkable tube under low light conditions.

[0039] In some embodiments, a fireproof and heat-insulating layer 8 is laid on the inner side of the tube body 1 and on the inner wall of the moisture-proof layer 7. The fireproof and heat-insulating layer 8 is made of ceramic fiber material with a thickness of 0.1 mm.

[0040] It should be noted that the fireproof and heat-insulating layer 8 is made of ceramic fiber material, and the fireproof and heat-insulating layer 8 is placed inside the tube body 1 to provide the best heat-insulating effect and protect the internal wires or sensitive components.

[0041] Working principle: The tube body 1 is made of heat-shrinkable material, so it will shrink when heated and tightly fit on the wire or other components to be protected. The reinforcing layer 2 is woven from high-strength glass fibers to improve the mechanical strength and durability of the overall structure and ensure the integrity of the tube body 1 even in harsh environments. The insulating layer 3 ensures electrical insulation between the metal shielding layer 4 and the tube body 1, and at the same time has good high-temperature resistance. The metal shielding layer 4 is composed of three metal layers, which are aluminum foil 41, nickel foil 42, and silver-plated copper foil 43 from the outside to the inside. The aluminum foil 41 is mainly used for preliminary electromagnetic wave shielding, the nickel foil 42 increases the shielding effect and improves the corrosion resistance, and the silver-plated copper foil 43 further enhances the shielding efficiency and reduces the contact resistance. The protective layer 5 protects the entire shielded heat-shrinkable tube from external abrasion, and the fluorescent marking coating 6 facilitates the identification and positioning of the heat-shrinkable tube under low light conditions. The moisture-proof layer 7 effectively prevents moisture from entering the heat-shrinkable tube and avoids electrical failures caused by moisture. The fireproof and heat-insulating layer 8 provides additional heat-insulating protection to prevent high temperature from damaging the internal wires or sensitive components.

[0042] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting it; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A shielded heat shrink tube, characterized in that: include A tube body (1) made of a heat shrinkable material, the outer layer of the tube body (1) being coated with a metal shielding layer (4), the metal shielding layer (4) being composed of three metal layers, which are, from the outside to the inside, aluminum foil (41), nickel foil (42), and silver-plated copper foil (43); An insulating layer (3) is provided between the metal shielding layer (4) and the tube body (1), and the insulating layer (3) is made of polytetrafluoroethylene material; A reinforcement layer (2) is provided between the insulating layer (3) and the tube body (1), and the reinforcement layer (2) is woven from high-strength glass fibers.

2. The shielded heat shrink tube according to claim 1, characterized in that: The surface of the silver-plated copper foil (43) included in the metal shielding layer (4) is covered with an anti-oxidation coating, and the anti-oxidation coating is made of titanium dioxide nanoparticles.

3. The shielded heat shrink tube according to claim 1, characterized in that: The inner wall of the tube body (1) is provided with a moisture-proof layer (7), and the moisture-proof layer (7) is made of silicone rubber.

4. The shielded heat shrink tube according to claim 1, characterized in that: The outer wall of the metal shielding layer (4) is provided with a protective layer (5), and the protective layer (5) is made of a wear-resistant polyimide film.

5. The shielded heat shrink tube according to claim 4, characterized in that: The surface of the protective layer (5) is coated with a fluorescent marking coating (6).

6. The shielded heat shrink tube according to claim 1, characterized in that: A fireproof and heat-insulating layer (8) is laid on the inner wall of the inner side of the pipe body (1) and located at the moisture-proof layer (7), and the fireproof and heat-insulating layer (8) is made of ceramic fiber material.

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