Non-toxic fire-resistant insulated cable

Abstract

The invention discloses a non-toxic fire-resistant insulated cable. The non-toxic fire-resistant insulated cable comprises wire cores and a protective layer, wherein each wire core sequentially comprises a conductor, an isolating layer and an insulating layer from inside to outside; the wire cores are arranged inside the protective layer in parallel; the protective layer is shaped like a flat ribbon; a reinforcing core is further arranged inside the protective layer; the reinforcing core is parallel to the wire cores; the protective layer is made of a halogen-free and flame-retardant polypropylene composite material; the halogen-free and flame-retardant polypropylene composite material comprises the following raw materials in parts by weight: 40-45 parts of polypropylene resin, 11-17 parts of an inorganic flame retardant, 4-9 parts of an aromatic amine antioxidant and 1-5 parts of a lubricant. The non-toxic fire-resistant insulated cable has the excellent characteristics of flame retardance and fire resistance, is free of toxicity and acid gas after combustion, and has the advantages of high flexibility, elasticity, firm structure and the like.

Description

technical field

[0001] The invention relates to a cable, in particular to a non-toxic fire-resistant insulated cable. Background technique

[0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels and various insulated power cables.

[0003] When a fire occurs in an existing cable product, the insulation and sheath layer of the cable conductor will be burned, thereby causing a short circuit between the cable cores, and making the equipment provided by the power supply unable to work. At the same ti...

Examples

Embodiment 1

[0015] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 40 parts of polypropylene resin, 11 parts of inorganic flame retardant, 4 parts of aromatic amine antioxidant 1 part, lubricant 1 part.

Embodiment 2

[0017] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 45 parts of polypropylene resin, 17 parts of inorganic flame retardant, 9 parts of aromatic amine antioxidant parts, lubricant 5 parts.

Embodiment 3

[0019] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 42 parts of polypropylene resin, 13 parts of inorganic flame retardant, 6 parts of aromatic amine antioxidant 3 parts, lubricant 3 parts.

technical field

[0001] The invention relates to a cable, in particular to a non-toxic fire-resistant insulated cable. Background technique

[0002] Power cables are cables used to transmit and distribute electric energy. Power cables are often used in urban underground power grids, outgoing lines of power stations, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main line of the power system, including 1-500KV and above various voltage levels and various insulated power cables.

[0003] When a fire occurs in an existing cable product, the insulation and sheath layer of the cable conductor will be burned, thereby causing a short circuit between the cable cores, and making the equipment provided by the power supply unable to work. At the same ti...

Examples

Embodiment 1

[0015] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 40 parts of polypropylene resin, 11 parts of inorganic flame retardant, 4 parts of aromatic amine antioxidant 1 part, lubricant 1 part.

Embodiment 2

[0017] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 45 parts of polypropylene resin, 17 parts of inorganic flame retardant, 9 parts of aromatic amine antioxidant parts, lubricant 5 parts.

Embodiment 3

[0019] In the embodiment of the present invention, a non-toxic fire-resistant insulated cable includes a wire core and a protective layer 5. The wire cores are a conductor 1, an isolation layer 2, and an insulating layer 3 from the inside to the outside, and the wire cores are parallel and arranged in the protective layer 5. , the protective layer 5 is in the shape of a flat strip, the protective layer 5 is also provided with a reinforcing core 4, and the reinforcing core 4 is arranged in parallel with the wire core. The protective layer 5 adopts a halogen-free flame-retardant polypropylene composite material, and the raw materials of the halogen-free flame-retardant polypropylene composite material include: 42 parts of polypropylene resin, 13 parts of inorganic flame retardant, 6 parts of aromatic amine antioxidant 3 parts, lubricant 3 parts.

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