High-flame-retardant environment-friendly wire and cable

Abstract

The utility model discloses a high flame-retardant environment-friendly wire cable, which relates to the technical field of cables and comprises a cable main body, a plurality of flame-retardant ring blocks uniformly surround the cable main body, strength strips are arranged on the left side and the right side of the cable main body, and the strength strips are positioned on the left side and the right side of the flame-retardant ring blocks. The peripheries of the flame-retardant ring blocks and the two strength strips are coated with an outer coating, and the surface of the outer coating is coated with a flame-retardant coating. According to the utility model, the aluminum oxide filler is adopted to improve the insulating property and fire resistance of the cable, the internal insulating layer is made of high insulating materials such as crosslinked polyethylene, and the flame-retardant coating covers the outer layer of the cable, so that flame spreading and combustion can be effectively prevented, and the cable is effectively prevented from burning or conducting faults at high temperature; and the protection layer and the flame-retardant isolation layer provide additional protection and isolation, so that physical damage and electromagnetic interference of the external environment to the cable are effectively prevented, and stable transmission of the cable is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a highly flame-retardant and environmentally friendly electric wire and cable. Background Art

[0002] Wires and cables are cables made of conductive materials used to transmit power, communication or data signals. They are usually composed of conductors, insulation layers, sheaths and fillers. Wires and cables are widely used in construction, industry, communication, energy and other fields, and are one of the indispensable infrastructures in modern society. However, some existing cables lack comprehensive flame retardant and environmental protection measures, such as the lack of internal insulation layers, flame retardant coatings and other designs, resulting in poor fire resistance and environmental protection performance. During use, they are easily affected by the external environment, such as humidity, high temperature, etc., resulting in a decrease in their flame retardant and environmental protection performance, shortening their service life. Therefore, the present invention proposes a highly flame retardant and environmentally friendly wire and cable to solve the problems mentioned in the above background technology. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a highly flame-retardant and environmentally friendly wire and cable.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A highly flame-retardant and environmentally friendly wire and cable, comprising a cable body, wherein a plurality of flame-retardant ring blocks are uniformly surrounded on the outside of the cable body, strength bars are arranged on both sides of the left and right sides of the cable body, and the strength bars are located on both sides of the left and right sides of the plurality of flame-retardant ring blocks, and the plurality of flame-retardant ring blocks and the two strength bars are covered with an outer sheath on the periphery, and the surface of the outer sheath is coated with a flame-retardant coating;

[0006] The cable body includes a plurality of wire cores inside, the plurality of wire cores are interwoven into core wires, the core wires are coated with an anti-shear layer outside, the anti-shear layer is coated with an internal insulating layer outside, the plurality of core wires are coated with an anti-electromagnetic interference layer outside, fillers are provided in the gaps between the inside of the anti-electromagnetic interference layer and the plurality of core wires, and the anti-electromagnetic interference layer is coated with an inner sheath outside.

[0007] Preferably, the flame retardant ring block is divided into a three-layer structure of left, middle and right. The left and right outer layers are fireproof layers, and the middle is a flame retardant isolation layer. The fireproof layer is made of a fireproof material polytetrafluoroethylene, and the middle flame retardant isolation layer is made of a graphite composite material. Polytetrafluoroethylene provides excellent flame retardant properties and high temperature resistance, effectively isolates flames and prevents the spread of fire. The graphite composite material has good flame retardant properties and thermal conductivity, can effectively isolate flames and protect the internal structure of the cable.

[0008] Preferably, the strength strips are made of glass fiber reinforced plastic, and the strength strips on both sides are fixed to both sides of a plurality of flame retardant ring blocks by bonding. The glass fiber reinforced plastic has good strength and rigidity, as well as low density and good corrosion resistance.

[0009] Preferably, the outer covering is made of cross-linked polyethylene material and the inner sheath is made of polyvinyl chloride material. Cross-linked polyethylene has the characteristics of high temperature resistance and chemical corrosion resistance, is suitable for high temperature and high voltage applications, and is flame retardant. Polyvinyl chloride has good electrical insulation and flame retardant properties, and can enhance the wear resistance and mechanical strength of wires and cables.

[0010] Preferably, the internal insulating layer is made of silicone rubber material, and the surface of the internal insulating layer is vulcanized. The silicone rubber has good heat resistance and flexibility, and can maintain stable performance in high temperature environments. The silicone rubber vulcanization treatment can enhance its high temperature resistance, oil resistance and corrosion resistance, and improve its stability and reliability in harsh working environments.

[0011] Preferably, the anti-electromagnetic interference layer is an aluminum foil shielding layer, and the surface of the aluminum foil shielding layer is oxidized. The aluminum foil shielding layer has good conductivity and shielding properties, can effectively block the interference of external electromagnetic interference signals, and improve the anti-interference ability of the cable. Through oxidation treatment, a layer of oxide film can be formed to protect the surface of the aluminum foil, thereby improving its corrosion resistance and antioxidant ability.

[0012] Preferably, the filler is an aluminum oxide mixture. The filler aluminum oxide has excellent flame retardancy and high temperature resistance, can effectively isolate flames and slow down the spread of fire, and also has certain electrical insulation properties.

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

[0014] 1. The utility model adopts alumina filler to improve the insulation performance and fire resistance of the cable. The internal insulation layer is made of high insulation materials such as cross-linked polyethylene. The flame retardant coating covers the outer layer of the cable, which can effectively prevent the spread and combustion of flames, effectively prevent the cable from burning or conducting faults at high temperatures, and enhance the safety and stability of the cable;

[0015] 2. The strength strip and flame-retardant ring block of the utility model are embedded in the cable structure, which can enhance the tensile strength and durability of the cable and prevent the cable from being stretched, deformed or broken during use. The protective layer and flame-retardant isolation layer provide additional protection and isolation, effectively preventing physical damage and electromagnetic interference to the cable from the external environment, and ensuring the stable transmission of the cable;

[0016] In summary, this highly flame-retardant and environmentally friendly wire and cable has good insulation performance, flame-retardant performance, durability and environmental protection performance. It is suitable for power transmission and industrial applications in various complex environments, providing users with safe and reliable electrical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic cross-sectional view of a highly flame-retardant and environmentally friendly wire and cable proposed by the utility model;

[0018] Figure 2 This is a side structural schematic diagram of a highly flame-retardant and environmentally friendly wire and cable proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of a highly flame-retardant and environmentally friendly wire and cable proposed by the utility model.

[0020] In the figure: 1. Cable body; 101. Inner sheath; 102. Filler; 103. Inner insulation layer; 104. Anti-shear layer; 105. Core; 106. Anti-electromagnetic interference layer; 2. Outer covering; 201. Flame retardant coating; 3. Strength strip; 4. Flame retardant ring block; 401. Fireproof layer; 402. Flame retardant isolation layer. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-3 A highly flame-retardant and environmentally friendly wire and cable comprises a cable body 1, the cable body 1 is evenly surrounded by a plurality of flame-retardant ring blocks 4, the flame-retardant ring blocks 4 are divided into a left, middle and right three-layer structure, the left and right outer layers are fireproof layers 401, the middle is a flame-retardant isolation layer 402, the fireproof layer 401 is made of a fireproof material polytetrafluoroethylene, and the middle flame-retardant isolation layer 402 is made of a graphite composite material, polytetrafluoroethylene provides excellent flame retardant properties and high temperature resistance, effectively isolates flames and prevents the spread of fire, and the graphite composite material has good flame retardant properties and thermal conductivity, can effectively isolate flames and protect the internal structure of the cable;

[0023] Furthermore, strength bars 3 are provided on both sides of the cable body 1, and the strength bars 3 are located on the left and right outer sides of the plurality of flame retardant ring blocks 4. The plurality of flame retardant ring blocks 4 and the two strength bars 3 are covered with an outer sheath 2, and the surface of the outer sheath 2 is coated with a flame retardant coating 201. The strength bars 3 are glass fiber reinforced plastics. The strength bars 3 on both sides are fixed to the two sides of the plurality of flame retardant ring blocks 4 by bonding. The glass fiber reinforced plastics have good strength and rigidity, and also have low density and good corrosion resistance. The outer sheath 2 is made of cross-linked polyethylene material, and the inner sheath 101 is made of polyvinyl chloride material. The cross-linked polyethylene has the characteristics of high temperature resistance and chemical corrosion resistance, and is suitable for high temperature and high voltage applications. It also has flame retardancy. Polyvinyl chloride has good electrical insulation and flame retardancy, and can enhance the wear resistance and mechanical strength of wires and cables.

[0024] Furthermore, the cable body 1 includes a plurality of wire cores 105 inside, the plurality of wire cores 105 are interwoven into a core wire, the core wire is coated with an anti-shear layer 104 outside, the anti-shear layer 104 is coated with an internal insulating layer 103 outside, the internal insulating layer 103 is made of silicone rubber material, and the surface of the internal insulating layer 103 is vulcanized. The silicone rubber has good heat resistance and flexibility, and can maintain stable performance in a high temperature environment. The silicone rubber vulcanization treatment can enhance its high temperature resistance, oil resistance and corrosion resistance, and improve its stability and reliability in a harsh working environment;

[0025] Furthermore, several core wires are coated with an anti-electromagnetic interference layer 106 on the outside, and fillers 102 are arranged in the gaps between the anti-electromagnetic interference layer 106 and the several core wires, and the anti-electromagnetic interference layer 106 is coated with an inner sheath 101 on the outside, and the anti-electromagnetic interference layer 106 is an aluminum foil shielding layer, and the surface of the aluminum foil shielding layer is oxidized. The aluminum foil shielding layer has good conductivity and shielding properties, which can effectively block the interference of external electromagnetic interference signals and improve the anti-interference ability of the cable. Through the oxidation treatment, a layer of oxide film can be formed to protect the surface of the aluminum foil and improve its corrosion resistance and antioxidant ability. The filler 102 is an aluminum oxide mixture, and the filler aluminum oxide has excellent flame retardant properties and high temperature resistance, which can effectively isolate flames and slow down the spread of fire, and also has certain electrical insulation properties.

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly flame-retardant and environmentally friendly wire and cable, comprising a cable body (1), characterized in that: The cable body (1) is evenly surrounded by a plurality of flame retardant ring blocks (4), and strength bars (3) are arranged on both sides of the left and right sides of the cable body (1), and the strength bars (3) are located on the left and right sides of the plurality of flame retardant ring blocks (4). The plurality of flame retardant ring blocks (4) and the two strength bars (3) are covered with an outer sheath (2), and the surface of the outer sheath (2) is coated with a flame retardant coating (201); The cable body (1) comprises a plurality of wire cores (105) inside, the plurality of wire cores (105) are interwoven into core wires, the core wires are coated with an anti-shear layer (104) outside, the anti-shear layer (104) is coated with an internal insulating layer (103) outside, the plurality of core wires are coated with an anti-electromagnetic interference layer (106) outside, a filler (102) is provided in the gap between the inside of the anti-electromagnetic interference layer (106) and the plurality of core wires, and the anti-electromagnetic interference layer (106) is coated with an inner sheath (101) outside.

2. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The flame retardant ring block (4) has a three-layer structure of left, middle and right. The left and right outer layers are fireproof layers (401), the middle is a flame retardant isolation layer (402), the fireproof layer (401) is made of a fireproof material polytetrafluoroethylene, and the middle flame retardant isolation layer (402) is made of a graphite composite material.

3. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The strength strip (3) is made of glass fiber reinforced plastic, and the strength strips (3) on both sides are fixed to the two sides of a plurality of flame retardant ring blocks (4) by bonding.

4. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The outer covering (2) is made of a cross-linked polyethylene material, and the inner sheath (101) is made of a polyvinyl chloride material.

5. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The internal insulating layer (103) is made of silicone rubber material, and the surface of the internal insulating layer (103) is vulcanized.

6. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The anti-electromagnetic interference layer (106) is an aluminum foil shielding layer, and the surface of the aluminum foil shielding layer is oxidized.

7. The highly flame-retardant and environmentally friendly wire and cable according to claim 1, characterized in that: The filler (102) is an aluminum oxide mixture.

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