High-efficiency flame-retardant cable

Abstract

The utility model belongs to the technical field of cables, and particularly relates to a high-efficiency flame-retardant cable, which is characterized in that non-woven fabrics are arranged on the outer surfaces of a plurality of cable cores and used for providing flame-retardant protection and enhancing the mechanical strength of the cable, and an outer sheath wraps the plurality of cable cores to form outer protection of the cable. The outer sheath sequentially comprises an inner sheath, a fireproof coating layer, an insulating layer and a protective layer from inside to outside, the inner sheath plays a role in protecting the cable core and the non-woven fabric, the fireproof coating layer adopts a cable fireproof coating and has good flame retardant performance, the insulating layer can prevent current from entering the surrounding environment or other conductors through the cable, and the protective layer can protect the cable core and the non-woven fabric. Therefore, electric shock, short circuit and other electrical accidents are effectively prevented, the safety and reliability of the cable during electric energy transmission are ensured, the protection layer has good flame retardant performance, the overall tensile performance of the cable is improved, the overall mechanical strength of the cable is improved, and the internal structure of the cable is protected.

Description

Technical Field

[0001] The utility model belongs to the technical field of cables, and in particular relates to a high-efficiency flame-retardant cable. Background Art

[0002] With the rapid development of the communications industry, the demand for wires and cables, which serve as the arteries and blood vessels for signal transmission, is increasing rapidly. Since wires and cables are used to carry electricity, they are not exposed. To ensure personal safety, they are wrapped with insulating materials. During use, the insulating materials on the surface of wires and cables are mostly plastic, which can easily lead to premature aging, cracking and sticking on the surface when used at high temperatures. Over time, the surface may become lumpy and lose functionality. Furthermore, some wires and cables are located in environments prone to flames, which can further destabilize the surface plastic. Some wires and cables are prone to burning, generating open flames, exposing the copper wires inside the wires and cables, which can easily cause short circuits and, in severe cases, fires. Utility Model Content

[0003] The purpose of the present invention is to provide a high-efficiency flame-retardant cable in order to solve the problems mentioned in the above-mentioned background technology.

[0004] In view of this, the utility model provides a high-efficiency flame-retardant cable, comprising a cable core, wherein the cable core is provided with a plurality of cable cores;

[0005] Non-woven fabric: the outer surface of each cable core is provided with non-woven fabric;

[0006] An outer sheath, which wraps the multiple cable cores;

[0007] The outer sheath includes an inner sheath, a fire retardant coating layer, an insulating layer and a protective layer which are arranged in sequence from the inside to the outside.

[0008] In the above technical solution, further, the non-woven fabric includes:

[0009] inner layer;

[0010] An intermediate layer is provided on the outer side of the inner layer;

[0011] An outer layer is provided on the outside of the middle layer;

[0012] Flame retardant filler: the middle layer is filled with flame retardant filler.

[0013] In the above technical solution, further, the outer layer includes:

[0014] Strength layer;

[0015] A matching layer is provided on the inner side of the strength layer;

[0016] An elastic layer is provided on the inner side of the matching layer;

[0017] The flame retardant layer is provided on the inner side of the elastic layer.

[0018] In the above technical solution, further, the flame retardant layer is made of polyvinyl chloride material, the matching layer is made of polylactic acid material, the strength layer is made of polyamide material, and the elastic layer is made of polypropylene material.

[0019] In the above technical solution, further, the strength layer, the matching layer, the elastic layer and the flame retardant layer are formed by melt-blowing processing, and the outer layer is formed into a porous structure by hot pressing using a porous mold.

[0020] In the above technical solution, further, the fire retardant coating layer adopts solvent-free halogen-free water-based environmentally friendly fire retardant coating.

[0021] In the above technical solution, further, the flame retardant filler is made of cellulose phosphate hydrochloric acid material.

[0022] In the above technical solution, further, the inner sheath is made of ceramic low-smoke halogen-free flame-retardant polyolefin refractory material, and the protective layer is made of low-smoke halogen-free polyolefin material.

[0023] In the above technical solution, further comprising:

[0024] Filler, the filler fills the gaps in the outer sheath.

[0025] The beneficial effects of the utility model are:

[0026] 1. The fire retardant coating layer adopts cable fire retardant coating, which has good flame retardant properties.

[0027] 2. The inner layer is combined with the outer layer and the middle layer to make it more functional. The middle layer is filled with flame retardant filler, which can effectively improve the flame retardant effect of the cable.

[0028] 3. Setting a protective layer improves the overall tensile performance of the cable, which is beneficial to improving the overall mechanical strength of the cable and protecting the internal structure of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the internal structure of the utility model;

[0030] Figure 2 This is a schematic diagram of the internal structure of the non-woven fabric of the present utility model;

[0031] The marks in the figure are: 1-cable core, 2-non-woven fabric, 3-outer sheath, 4-inner sheath, 5-fire retardant coating layer, 6-insulation layer, 7-protective layer, 8-inner layer, 9-middle layer, 10-outer layer, 11-flame retardant filler, 12-strength layer, 13-matching layer, 14-elastic layer, 15-flame retardant layer, 16-filler. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0033] Example 1:

[0034] This embodiment provides a high-efficiency flame-retardant cable, including:

[0035] A cable core 1, wherein a plurality of cable cores 1 are provided;

[0036] Non-woven fabric 2, the outer surface of each cable core 1 is provided with non-woven fabric 2;

[0037] An outer sheath 3, wherein the outer sheath 3 wraps the plurality of cable cores 1;

[0038] The outer sheath 3 includes an inner sheath 4, a fire retardant coating layer 5, an insulating layer 6 and a protective layer 7 which are arranged in sequence from the inside to the outside.

[0039] It can be seen from this embodiment that the outer surfaces of multiple cable cores 1 are provided with non-woven fabrics 2 for providing flame retardant protection and enhancing the mechanical strength of the cable. The outer sheath 3 wraps the multiple cable cores 1 inside to form the outer layer protection of the cable. The outer sheath includes an inner sheath 4, a fire retardant coating layer 5, an insulating layer 6 and a protective layer 7 from the inside to the outside. The inner sheath 4 protects the cable core 1 and the non-woven fabric 2. The fire retardant coating layer 5 adopts a cable fire retardant coating with good flame retardant properties. The insulating layer 6 can prevent current from passing through the cable into the surrounding environment or other conductors, thereby effectively preventing electrical accidents such as electric shock and short circuit, ensuring the safety and reliability of the cable when transmitting electrical energy. The protective layer 7 has good flame retardant properties. The provision of the protective layer 7 improves the overall tensile strength of the cable, is beneficial to improving the overall mechanical strength of the cable, and protects the internal structure of the cable.

[0040] Example 2:

[0041] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0042] Non-woven fabric 2 includes:

[0043] Inner layer 8;

[0044] An intermediate layer 9 is provided on the outer side of the inner layer 8;

[0045] Outer layer 10: The outer side of the middle layer 9 is provided with an outer layer 10;

[0046] Flame retardant filler 11 : The middle layer 9 is filled with flame retardant filler 11 .

[0047] It can be seen from this embodiment that the inner layer 8 is provided to be combined with the outer layer 10 and the middle layer 9 to make it more functional. The middle layer 9 is filled with flame retardant filler 11, and the flame retardant filler 11 can effectively improve the flame retardant effect of the cable.

[0048] Example 3:

[0049] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0050] The outer layer 10 comprises:

[0051] Strength layer 12;

[0052] Matching layer 13: A matching layer 13 is provided on the inner side of the strength layer 12;

[0053] An elastic layer 14 is provided on the inner side of the matching layer 13;

[0054] Flame retardant layer 15 : A flame retardant layer 15 is provided on the inner side of the elastic layer 14 .

[0055] It can be seen from this embodiment that the strength layer 12 and the matching layer 13 of the outer layer 10 use environmentally friendly materials to improve the wear resistance of the structure, and the elastic layer 14 cooperates with the flame retardant layer 15 to achieve a preliminary flame retardant effect. The elastic layer 14 can improve the ductility of the structure and make it possible to reset when it is pulled and deformed.

[0056] Example 4:

[0057] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0058] The flame retardant layer 15 is made of polyvinyl chloride material, the matching layer 13 is made of polylactic acid material, the strength layer 12 is made of polyamide material, and the elastic layer 14 is made of polypropylene material.

[0059] It can be seen from this embodiment that the flame retardant layer 15 made of polyvinyl chloride material has certain flame retardant properties, the matching layer 13 made of polylactic acid material can be more environmentally friendly while reducing costs, the strength layer 12 made of polyamide material has good anti-friction effect, and the elastic layer 14 made of polypropylene material has good ductility and elasticity.

[0060] Example 5:

[0061] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0062] The strength layer 12 , the matching layer 13 , the elastic layer 14 and the flame retardant layer 15 are formed by melt-blowing, and the outer layer 10 is formed into a porous structure by hot pressing using a porous die.

[0063] It can be seen from this embodiment that the strength layer 12, the matching layer 13, the elastic layer 14 and the flame retardant layer 15 are formed by meltblowing processing, and the outer layer 10 is formed into a porous structure by hot pressing using a porous mold. The meltblowing processing can facilitate the rapid and convenient processing and compounding of the strength layer 12, the matching layer 13, the elastic layer 14 and the flame retardant layer 15 layer by layer. By using a porous mold to form a porous structure of the outer layer 3, the air permeability and hydrophobicity of the structure can be improved.

[0064] Example 6:

[0065] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0066] The fire retardant coating layer 5 adopts solvent-free halogen-free water-based environmentally friendly fire retardant coating.

[0067] As can be seen in this embodiment, the fire retardant coating layer 5 is a solvent-free, halogen-free, water-based, environmentally friendly fire retardant for cables. It is resistant to moisture, freeze-thaw cycles, UV radiation, and various oils and chemicals. It can be used as a protective coating for cables. In the event of a fire, it decomposes internally and releases cooling gases, while carbonizing the surface to slow heat transfer, achieving a temperature resistance of up to 1000°C.

[0068] Example 7:

[0069] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0070] The flame retardant filler 11 is made of cellulose phosphate hydrochloric acid material.

[0071] It can be seen from this embodiment that the flame retardant filler 11 is made of cellulose phosphate hydrochloric acid material, and the flame retardant material made of cellulose phosphate hydrochloric acid material can achieve good flame retardant effect.

[0072] Example 8:

[0073] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0074] The inner sheath 4 is made of ceramic low-smoke halogen-free flame-retardant polyolefin refractory material, and the protective layer 7 is made of low-smoke halogen-free polyolefin material.

[0075] As can be seen from this embodiment, the inner sheath 4 is preferably made of a ceramic low-smoke, halogen-free, flame-retardant polyolefin refractory material. Based on the characteristics of the ceramic material, it will rapidly harden and gradually ceramicize under flame conditions or at temperatures above 500°C, forming a hard and dense ceramic shell oxygen barrier layer, which prevents the flame from spreading inward. It can withstand continuous high temperatures of 1200°C to 1600°C, is safe, environmentally friendly and non-toxic, can improve the fire-resistant and heat-insulating effects, and is more environmentally friendly. The protective layer 7 is made of a crack-resistant, highly flame-retardant low-smoke, halogen-free polyolefin material, which has good flame retardant properties while also having good mechanical and environmental properties.

[0076] Example 9:

[0077] This embodiment provides a high-efficiency flame-retardant cable, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0078] Also includes:

[0079] The filler 16 fills the gaps in the outer sheath 3 .

[0080] It can be seen from this embodiment that the outer sheath 3 is also filled with a filler 16. The filler 16 fills the gaps in the outer sheath 3 and the remaining gaps in the sheath, thereby reducing the activity space of the cable core 1 in the sheath, reducing the degree of deformation of the cable due to the extrusion force, and increasing the overall strength of the cable. The filler 16 is composed of polyethylene, which has good wettability, heat resistance, mechanical strength and toughness, can protect the insulation and core wire of the cable, and prevent the entry of moisture.

[0081] The embodiments of the present application are described above in conjunction with the accompanying drawings. Unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A high-efficiency flame-retardant cable, characterized in that: include: A cable core (1), wherein a plurality of cable cores (1) are provided; Non-woven fabric (2), the outer surface of each cable core (1) is provided with non-woven fabric (2); An outer sheath (3), wherein the outer sheath (3) encloses the plurality of cable cores (1); The outer sheath (3) comprises an inner sheath (4), a fire retardant coating layer (5), an insulating layer (6), and a protective layer (7) which are arranged in sequence from the inside to the outside.

2. A high-efficiency flame-retardant cable according to claim 1, characterized in that: The nonwoven fabric (2) comprises: inner layer (8); An intermediate layer (9), wherein the intermediate layer (9) is provided on the outer side of the inner layer (8); An outer layer (10), the outer side of the middle layer (9) is provided with an outer layer (10); Flame retardant filler (11), the middle layer (9) is filled with the flame retardant filler (11).

3. A high-efficiency flame-retardant cable according to claim 2, characterized in that: The outer layer (10) comprises: Strength layer (12); A matching layer (13), wherein the matching layer (13) is provided on the inner side of the strength layer (12); an elastic layer (14), wherein the elastic layer (14) is provided on the inner side of the matching layer (13); A flame retardant layer (15) is provided on the inner side of the elastic layer (14).

4. A high-efficiency flame-retardant cable according to claim 3, characterized in that: The flame retardant layer (15) is made of polyvinyl chloride material, the matching layer (13) is made of polylactic acid material, the strength layer (12) is made of polyamide material, and the elastic layer (14) is made of polypropylene material.

5. A high-efficiency flame-retardant cable according to claim 4, characterized in that: The strength layer (12), the matching layer (13), the elastic layer (14) and the flame retardant layer (15) are formed by melt-blowing, and the outer layer (10) is formed into a porous structure by hot pressing using a porous mold.

6. A high-efficiency flame-retardant cable according to claim 5, characterized in that: The fire retardant coating layer (5) adopts solvent-free halogen-free water-based environmentally friendly fire retardant coating.

7. A high-efficiency flame-retardant cable according to claim 6, characterized in that: The flame retardant filler (11) is made of cellulose phosphate hydrochloric acid material.

8. The high-efficiency flame-retardant cable according to claim 7, characterized in that: The inner sheath (4) is made of ceramic low-smoke halogen-free flame-retardant polyolefin refractory material, and the protective layer (7) is made of low-smoke halogen-free polyolefin material.

9. The high-efficiency flame-retardant cable according to claim 8, characterized in that: Also includes: A filler (16) is provided, wherein the filler (16) fills the gap in the outer jacket (3).

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