Novel low-smoke halogen-free flame-retardant moisture-resistant environment-friendly electric wire

Abstract

The utility model discloses a novel low-smoke halogen-free flame-retardant moisture-resistant environment-friendly wire, which comprises a conductor. The periphery of the conductor is coated with an inner insulating layer; the periphery of the inner insulating layer is coated with an outer insulating layer; the inner insulating layer is made of a low-density polyethylene insulating material; the outer insulating layer is made of a low-smoke halogen-free flame-retardant polypropylene insulating material; an external thread is formed on the outer peripheral side of the inner insulating layer; the inner peripheral side of the outer insulating layer is provided with an internal thread which is used for cooperating with the external thread to limit the sleeving position between the inner insulating layer and the outer insulating layer. The novel low-smoke halogen-free flame-retardant moisture-resistant environment-friendly electric wire adopts the double-layer co-extrusion design of the inner insulating layer and the outer insulating layer, so that the electrical property of the electric wire is ensured early, the moisture resistance and water resistance of the electric wire are enhanced, and the novel low-smoke halogen-free flame-retardant electric wire has low-smoke halogen-free flame-retardant performance and is safer to use.

Description

Technical Field

[0001] The utility model relates to a new environmentally friendly electric wire which is low-smoke, halogen-free, flame-retardant and moisture-resistant. Background Art

[0002] At present, most of the household wiring wires use PVC insulated wires, but PVC insulation contains halogens, which is not environmentally friendly. When a fire occurs, there will be thick smoke, which will pose a threat to personnel escape. There are also a few who choose low-smoke halogen-free irradiation cross-linked polyolefin insulation. The particularity of the irradiation process makes it difficult to realize automated production equipment, and the process flow manufacturing cost is high. In addition, during the operation of electron accelerator irradiation cross-linking, the electron beam, as a strong physical radiation source, will have a certain impact on the environment and human body. Whether it is during the operation of the staff or the maintenance of the equipment, if effective shielding measures are not taken, radiation diseases may be caused. During the operation of electron accelerator irradiation cross-linking, a certain amount of volatile organic compounds may also be generated, so effective purification measures need to be taken to meet environmental protection standards before they can be discharged. In addition, irradiation equipment may generate wastewater during the cooling process, which needs to be treated and discharged in accordance with environmental protection regulations. Some manufacturers also produce thermoplastic low-smoke halogen-free flame-retardant polyolefin insulated wires, but the material has poor water resistance. After being damp or immersed in water, the insulation resistance drops sharply and the electrical performance deteriorates. Utility Model Content

[0003] The utility model provides a low-smoke, halogen-free, flame-retardant, moisture-resistant, environmentally friendly new type of wire to solve the above-mentioned technical problems, and specifically adopts the following technical solutions:

[0004] A new type of low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly electric wire comprises: a conductor; an inner insulating layer coated on the outer periphery of the conductor; an outer insulating layer coated on the outer periphery of the inner insulating layer; the inner insulating layer is made of low-density polyethylene insulating material; the outer insulating layer is made of low-smoke, halogen-free, flame-retardant polypropylene insulating material; an outer thread is formed on the outer periphery of the inner insulating layer; an inner thread is formed on the inner periphery of the outer insulating layer for matching the outer thread to limit the sleeve position between the inner insulating layer and the outer insulating layer.

[0005] Furthermore, a textile layer is provided between the inner side of the inner insulating layer and the conductor for protecting the conductor when the inner insulating layer and the outer insulating layer are peeled off; the textile layer is made of cotton fabric.

[0006] Furthermore, the conductor is a copper conductor.

[0007] Furthermore, the thickness of the inner insulating layer ranges from 0.07 mm to 0.15 mm.

[0008] Furthermore, the thickness of the outer insulating layer ranges from 0.65 mm to 0.75 mm.

[0009] Furthermore, the thread depth values ​​of the internal thread and the external thread range from 0.01 mm to 0.02 mm.

[0010] Furthermore, the outer insulating layer is circumferentially provided with a plurality of reinforcing wires for preventing the outer insulating layer from breaking.

[0011] Further, the reinforcing wire is made of nylon material.

[0012] Furthermore, the ratio of the thickness of the outer insulating layer to the diameter of the reinforcing wire is 6.

[0013] Furthermore, the outer insulating layer also includes: a flame retardant layer made of a mixed material of polypropylene insulating material, triaminotripropanol phosphate and aluminum hydroxide.

[0014] The utility model is beneficial in that it provides a low-smoke, halogen-free, flame-retardant, moisture-resistant, environmentally friendly new type of electric wire adopts a double-layer co-extrusion design of an inner insulating layer and an outer insulating layer, which ensures the electrical properties of the wire while enhancing the moisture resistance and water resistance of the wire, and has low-smoke, halogen-free, flame-retardant properties, making it safer to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 It is a schematic diagram of a low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type of electric wire involved in the present application;

[0017] A low-smoke, halogen-free, flame-retardant, moisture-resistant, environmentally friendly new electric wire 10 , a conductor 11 , an inner insulating layer 12 , an outer thread 121 , an outer insulating layer 13 , an inner thread (not shown), a flame-retardant layer 131 , a reinforcing wire 14 , and a textile layer 15 . DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0019] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] like Figure 1 As shown, a low-smoke, halogen-free, flame-retardant, moisture-resistant, environmentally friendly new type electric wire 10 of the present application includes: a conductor 11, which is a copper conductor 11. The outer periphery of the conductor 11 is coated with an inner insulating layer 12, which is made of low-density polyethylene insulation material and can effectively increase insulation resistance. The outer periphery of the inner insulating layer 12 is coated with an outer insulating layer 13, which is made of low-smoke, halogen-free, flame-retardant polypropylene insulation material, and has excellent water resistance and high flame retardancy.

[0022] The above-mentioned low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire 10 adopts a double-layer co-extrusion design of an inner insulating layer 12 and an outer insulating layer 13, which not only ensures the electrical properties of the wire, but also enhances the moisture resistance and water resistance of the wire, and has low-smoke, halogen-free, flame-retardant properties, making it safer to use.

[0023] Furthermore, an external thread 121 is formed on the outer circumferential side of the inner insulating layer 12, and an internal thread (not shown) is formed on the inner circumferential side of the outer insulating layer 13 for matching the external thread 121. In this way, the sleeve position between the inner insulating layer 12 and the outer insulating layer 13 can be limited by the interference and limiting effect of the external thread 121 and the internal thread (not shown), so that the sleeve structure of the inner insulating layer 12 and the outer insulating layer 13 is more stable, thereby avoiding separation of the two insulating layers, thereby affecting the overall moisture resistance, water resistance, electrical properties and flame retardancy of the wire.

[0024] As a specific embodiment, a textile layer 15 is provided between the inner side of the inner insulating layer 12 and the conductor 11 to protect the conductor 11 when stripping the inner insulating layer 12 and the outer insulating layer 13. The textile layer 15 is made of cotton fabric, which is convenient for stripping and cutting while protecting the conductor 11.

[0025] As a specific implementation, the thickness range of the inner insulating layer 12 is 0.07mm-0.15mm, and the thickness range of the outer insulating layer 13 is 0.65mm-0.75mm. Through the thickness design of the inner insulating layer 12 and the outer insulating layer 13, the electrical properties of the wires can be effectively guaranteed while the wires have better moisture resistance, water resistance and flame retardancy.

[0026] Furthermore, the thread depth range of the internal thread (not shown) and the external thread 121 is 0.01mm-0.02mm, so that when the thickness design of the inner insulating layer 12 and the outer insulating layer 13 is coordinated with the above-mentioned, the stability of the connection structure between the inner insulating layer 12 and the outer insulating layer 13 of the wire is not affected.

[0027] As a specific implementation, the outer insulating layer 13 is provided with a plurality of reinforcing wires 14 in the circumferential direction to prevent the outer insulating layer 13 from breaking. The reinforcing wires 14 are made of nylon material, which has low cost, high mechanical strength, does not affect wire stripping, and is easy to cut short. During design, the ratio of the thickness of the outer insulating layer 13 to the diameter of the reinforcing wires 14 is set to 6, so as not to affect the various properties of the outer insulating layer 13.

[0028] As a specific embodiment, the outer insulating layer 13 also includes: a flame retardant layer 131 made of a mixed material of polypropylene insulation, triaminotripropanol phosphate and aluminum hydroxide. The flame retardant layer 131 is arranged on the outer peripheral side of the outer insulating layer 13. The flame retardant layer 131 is made of a composite flame retardant composed of polypropylene insulation, triaminotripropanol phosphate and aluminum hydroxide, which makes the wire have better flame retardancy. In other words, the base layer of the outer insulating layer 13 adopts a halogen-free material of the polypropylene system (the smoothness, wear resistance and insulation of the polypropylene base material are better than PE and EVA base materials), and the flame retardant layer 131 is made of a mixture of polypropylene insulation, triaminotripropanol phosphate and aluminum hydroxide. Based on the inherent advantages of the polypropylene material, the wire has the advantages of scratch resistance on the insulation surface, smooth surface, high flame retardancy, high insulation resistance, etc. when it is finished, so that the wire is easier to pass through the pipe and safer to use.

[0029] The above-mentioned low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire 10 is mainly used for household power transmission. Such household electric wire is halogen-free and non-toxic at high temperature or when burning. The combustion smoke is non-toxic and non-corrosive, and will not cause pollution to the atmospheric environment. At the same time, it has better overload current resistance than electric wires of the same specification, and is safe and environmentally friendly.

[0030] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the above embodiments do not limit the utility model in any form, and any technical solution obtained by equivalent replacement or equivalent transformation falls within the protection scope of the utility model.

Claims

1. A low-smoke, halogen-free, flame-retardant, moisture-resistant, environmentally friendly new type of electric wire, characterized in that: include: conductor; The outer periphery of the conductor is coated with an inner insulating layer; The outer periphery of the inner insulating layer is coated with an outer insulating layer; The inner insulating layer is made of low-density polyethylene insulating material; The outer insulation layer is made of low-smoke, halogen-free, flame-retardant polypropylene insulation material; The outer peripheral side of the inner insulating layer is formed with an external thread; An inner circumferential side of the outer insulating layer is formed with an inner thread for matching with the outer thread to define a sleeve position between the inner insulating layer and the outer insulating layer.

2. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 1 is characterized in that: A textile layer is provided between the inner side of the inner insulating layer and the conductor for protecting the conductor when the inner insulating layer and the outer insulating layer are peeled off; The textile layer is made of cotton textile.

3. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 1 is characterized in that: The conductor is a copper conductor.

4. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 1 is characterized in that: The thickness of the inner insulating layer is in the range of 0.07 mm to 0.15 mm.

5. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 4 is characterized in that: The thickness of the outer insulating layer is in the range of 0.65 mm to 0.75 mm.

6. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 5, characterized in that: The thread depth values ​​of the internal thread and the external thread range from 0.01 mm to 0.02 mm.

7. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 5 is characterized in that: The outer insulating layer is circumferentially provided with a plurality of reinforcing wires for preventing the outer insulating layer from breaking.

8. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 7, characterized in that: The reinforcement line is made of nylon material.

9. The low-smoke, halogen-free, flame-retardant, moisture-resistant and environmentally friendly new type electric wire according to claim 7, characterized in that: The ratio of the thickness of the outer insulating layer to the diameter of the reinforcing wire is 6.

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