A bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable

Abstract

This utility model discloses a bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable, comprising a cross-shaped frame, twisted pairs, a flame-retardant and heat-insulating sheath, a flame-retardant filling layer, a protective outer jacket, and a thermally conductive layer. Several twisted pairs are twisted together around the side of the cross-shaped frame. The protective outer jacket is fitted over the outside of the flame-retardant filling layer. The thermally conductive layer is embedded within the flame-retardant filling layer. By embedding a tubular thermally conductive layer within the flame-retardant filling layer, when an external flame burns a portion of the network cable, the heat is transferred radially through the thermally conductive layer. This prevents the flame-retardant filling material in that area from being consumed too quickly during heat absorption and decomposition. Furthermore, the heated thermally conductive layer preheats the flame-retardant filling material in the vicinity of that area to its decomposition temperature, thus pre-decomposing, absorbing heat, and cooling it to form a continuous, dense, and stronger residual heat-insulating layer. This provides better flame retardancy and heat insulation, increasing the service life of the network cable in a fire.

Description

Technical Field

[0001] This utility model relates to the field of Category 6 network cables, specifically to a bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable. Background Technology

[0002] To connect to a local area network (LAN), a network cable is essential. The most common types of network cables used in LANs are twisted-pair cables, coaxial cables, and fiber optic cables. Twisted-pair cables are data transmission lines composed of many pairs of wires. Their main advantage is their low cost, which is why they are widely used. However, the insulation of existing network cables is generally made of polyvinyl chloride (PVC). When a network cable burns, it not only produces a large amount of black smoke but also releases toxic gases harmful to humans, thus hindering fire escape and rescue. Furthermore, the insulation of individual conductors in existing network cables generally lacks easily strippable spiral grooves and circular termination grooves. While existing network cables have built-in flame-retardant layers, although these can quickly prevent the spread of localized flames, the local temperature of the cable rises rapidly, causing the network cable to break immediately. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable to solve the above-mentioned problems.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is: a bundled high flame-retardant, low-smoke, halogen-free unshielded Category 6 network cable, comprising a cross-shaped frame, twisted pairs, a flame-retardant and heat-insulating sheath, a flame-retardant filling layer, a protective outer jacket, and a thermally conductive layer; several of the twisted pairs are twisted together around the side of the cross-shaped frame; the flame-retardant and heat-insulating sheath covers the outside of the twisted pairs and the cross-shaped frame; the flame-retardant and heat-insulating sheath is coated with a flame-retardant filling layer on its outer side; the protective outer jacket is fitted over the outside of the flame-retardant filling layer; and the thermally conductive layer is embedded in the middle of the flame-retardant filling layer.

[0005] Preferably, the thermally conductive layer is one of a thermally conductive metal layer and a thermally conductive graphene layer.

[0006] Preferably, the thermally conductive layer has a mesh structure.

[0007] Preferably, a mesh fixing layer is also provided inside the flame-retardant filling layer.

[0008] Preferably, the protective outer layer is a low-smoke, halogen-free, non-shielding layer.

[0009] Preferably, the flame-retardant filler layer is made of magnesium hydroxide.

[0010] Preferably, the flame-retardant and heat-insulating cladding is a mica wrapping tape layer.

[0011] Preferably, the cross frame is a flame-retardant plastic cross frame.

[0012] The main technical advantages of this invention are as follows: By embedding a tubular heat-conducting layer in the middle of the flame-retardant filling layer, when an external flame burns a part of the network cable, the heat is transferred radially through the heat-conducting layer. This prevents the flame-retardant filling material in that area from being consumed too quickly during heat absorption and decomposition. Furthermore, the heated heat-conducting layer preheats the flame-retardant filling material in that area to its decomposition temperature, thus pre-decomposing, absorbing heat, and cooling it to form a continuous, dense, and stronger residual heat insulation layer. This results in better flame retardancy and heat insulation, increasing the service life of the network cable in a fire. Additionally, the heat on the surface of the network cable is quickly conducted away by the heat-conducting layer, effectively reducing the actual temperature of the outermost surface of the material and delaying the time it takes for the material to pyrolyze and produce combustible gases, thereby extending the time required for the cable to ignite. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the heat-conducting layer with a mesh structure in this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the heat-conducting layer and the mesh fixing layer.

[0016] The attached diagram is labeled as follows: 1-cross skeleton, 2-twisted pair, 3-flame retardant and heat insulation layer, 4-flame retardant filling layer, 5-protective outer layer, 6-heat conductive layer, 7-mesh fixing layer. Detailed Implementation

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, so that the technical solution of this utility model can be more easily understood and mastered.

[0018] In this embodiment, it should be understood that the terms "middle," "upper," "lower," "top," "right side," "left end," "above," "back," "center," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0019] Furthermore, unless otherwise specified in this specific embodiment, the connection or fixing method between components can be achieved by bolt fixing, pin fixing, or pin connection commonly used in the prior art. Therefore, it will not be described in detail in this embodiment.

[0020] This utility model provides a bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable, such as... Figure 1-3As shown, the structure includes a cross-shaped frame 1, twisted pairs 2, a flame-retardant and heat-insulating sheath 3, a flame-retardant filling layer 4, a protective outer layer 5, and a thermally conductive layer 6. Several twisted pairs 2 are twisted together around the sides of the cross-shaped frame 1. The flame-retardant and heat-insulating sheath 3 covers the outside of the twisted pairs 2 and the cross-shaped frame 1. The flame-retardant and heat-insulating sheath 3 is coated with a flame-retardant filling layer 4. The protective outer layer 5 is fitted over the outside of the flame-retardant filling layer 4. The thermally conductive layer 6 is embedded within the flame-retardant filling layer 4. By embedding a tubular thermally conductive layer 6 within the flame-retardant filling layer 4, when an external flame burns a localized area of ​​the wire mesh, the heat is diverted through the thermally conductive layer. 6. Heat is transferred radially, preventing the flame-retardant filler material from being consumed too quickly during its heat absorption and decomposition. The heated heat-conducting layer 6 also preheats the flame-retardant filler material in the vicinity of the area to its decomposition temperature, thus pre-decomposing, absorbing heat, and cooling it to form a continuous, dense, and stronger residual insulation layer. This results in better flame retardancy and heat insulation, increasing the service life of the network cable in a fire. Furthermore, the heat on the surface of the network cable is quickly conducted away by the heat-conducting layer 6, effectively reducing the actual temperature of the outermost surface of the material and delaying the time for the material to pyrolyze and produce combustible gases, thereby extending the time required for the cable to ignite.

[0021] In this embodiment, an insulating filler material is also filled between the twisted pair 2 and the flame-retardant and heat-insulating sheath 3.

[0022] Preferably, the thermally conductive layer 6 is either a thermally conductive metal layer or a thermally conductive graphene layer, both of which can rapidly transfer heat.

[0023] Preferably, the heat-conducting layer 6 has a mesh structure, which not only conducts heat, but also stabilizes the flame-retardant filler material in the flame-retardant filler layer 4 using the mesh structure.

[0024] Preferably, a mesh fixing layer 7 is also provided in the flame-retardant filling layer 4 to stabilize the flame-retardant filling material in the flame-retardant filling layer 4.

[0025] Preferably, the protective outer layer 5 is a low-smoke, halogen-free, unshielded layer, so that the network cable will not release a large amount of toxic halogen fumes in a fire.

[0026] Preferably, the flame-retardant filler layer 4 is made of magnesium hydroxide. Magnesium hydroxide undergoes endothermic decomposition at a high temperature of 340℃-380℃, generating water vapor which facilitates the dilution of gases produced by burning cables and can also decompose to form a flame-retardant and heat-insulating protective layer.

[0027] Preferably, the flame-retardant and heat-insulating cladding layer 3 is a mica wrapping tape layer, which improves the heat insulation protection of the internal wire core.

[0028] Preferably, the cross frame 1 is a flame-retardant plastic cross frame 1 to prevent the cross frame 1 from continuing to burn.

[0029] The main technical advantages of this invention are as follows: By embedding a tubular heat-conducting layer in the middle of the flame-retardant filling layer, when an external flame burns a part of the network cable, the heat is transferred radially through the heat-conducting layer. This prevents the flame-retardant filling material in that area from being consumed too quickly during heat absorption and decomposition. Furthermore, the heated heat-conducting layer preheats the flame-retardant filling material in that area to its decomposition temperature, thus pre-decomposing, absorbing heat, and cooling it to form a continuous, dense, and stronger residual heat insulation layer. This results in better flame retardancy and heat insulation, increasing the service life of the network cable in a fire. Additionally, the heat on the surface of the network cable is quickly conducted away by the heat-conducting layer, effectively reducing the actual temperature of the outermost surface of the material and delaying the time it takes for the material to pyrolyze and produce combustible gases, thereby extending the time required for the cable to ignite.

[0030] Of course, the above are just typical examples of this utility model. In addition, this utility model may have many other specific implementation methods. All technical solutions formed by equivalent substitution or equivalent transformation fall within the scope of protection claimed by this utility model.

Claims

1. A bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable, characterized in that: It includes a cross-shaped frame, twisted pairs, a flame-retardant and heat-insulating sheath, a flame-retardant filling layer, a protective outer layer, and a thermally conductive layer; several of the twisted pairs are twisted together around the side of the cross-shaped frame; the flame-retardant and heat-insulating sheath covers the outside of the twisted pairs and the cross-shaped frame; the flame-retardant and heat-insulating sheath is coated with a flame-retardant filling layer on its outside; the protective outer layer is fitted over the outside of the flame-retardant filling layer; and the thermally conductive layer is embedded in the middle of the flame-retardant filling layer.

2. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The thermally conductive layer is one of a thermally conductive metal layer and a thermally conductive graphene layer.

3. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 2, characterized in that, The thermally conductive layer has a mesh structure.

4. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The flame-retardant filler layer also contains a mesh fixing layer.

5. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The protective outer layer is a low-smoke, halogen-free, non-shielding layer.

6. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The flame-retardant filler layer is made of magnesium hydroxide.

7. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The flame-retardant and heat-insulating cladding is a mica wrapping tape layer.

8. The bundled, high flame-retardant, low-smoke, halogen-free, unshielded Category 6 network cable as described in claim 1, characterized in that, The cross-shaped frame is a flame-retardant plastic cross-shaped frame.

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