CN201663005U - Low Smoke Halogen Free Flame Retardant Computer Cable - Google Patents

Abstract

The utility model relates to a low-smoke halogen-free flame-retardant electronic computer cable, which comprises a cable inner core and a cable outer layer wrapped outside the cable inner core. Wire core, polyester tape wrapped around the conductive wire core, and a first composite tape wrapped outside the polyester tape, the first composite tape is provided with a ground wire, and the outer layer of the cable is sequentially arranged from inside to outside. It is an inner liner, a second composite tape and a sheath layer, the second composite tape is provided with a ground wire, and the gap between the cable outer layer and the cable inner core is provided with a flame-retardant filler. This product adopts the structure of aluminum foil overall shielding and sub-shielding, which can effectively reduce the crosstalk between each line pair, has good shielding effect and strong anti-electromagnetic radiation ability. The appearance of the product of the utility model is clean and smooth, soft, low in smoke, flame retardant, halogen-free and environmentally friendly, and conforms to EU ROHS standards. So as to meet the design requirements of scientific and technological innovation, green environmental protection, safety and pollution-free.

Description

Low Smoke Halogen Free Flame Retardant Computer Cable

technical field

The utility model relates to an electronic computer cable, in particular to a low-smoke halogen-free flame-retardant electronic computer cable.

Background technique

At present, all kinds of power cables widely used in many domestic buildings are wrapped with a layer of cable insulation. Most of the cable insulation materials contain halogens. This kind of power cable is an extremely dangerous material that transmits flames and expands the scope of the fire. When such insulation materials are ignited, a large amount of dense smoke and highly corrosive hydrogen halides will be produced. The gas endangers human life, endangers equipment and pollutes the environment. Once a fire breaks out in a building, it will endanger life and seriously pollute the environment.

Utility model content

The task of this utility model patent is to provide a low-smoke, halogen-free, flame-retardant electronic computer cable, which can effectively solve the problems existing in the prior art. Problems such as the generation of toxic gases. The utility model relates to a low-smoke halogen-free flame-retardant electronic computer cable, which comprises a cable inner core and a cable outer layer wrapped outside the cable inner core. Wire core, polyester tape wrapped around the conductive wire core, and a first composite tape wrapped outside the polyester tape, the first composite tape is provided with a ground wire, and the outer layer of the cable is sequentially arranged from inside to outside. It is an inner liner, a second composite tape and a sheath layer, the second composite tape is provided with a ground wire, and the gap between the cable outer layer and the cable inner core is provided with a flame-retardant filler. The number of cable inner cores in the cable outer layer is one or more than one. The inner lining layer is a polypropylene wrapping tape inner lining layer. The insulating layer and the sheath layer are flame-retardant low-smoke halogen-free cable materials. The flame retardant filler is a flame retardant mesh tear filling rope. The ground wire is a tinned multi-strand soft twisted wire. The first composite belt and the second composite belt are aluminum-plastic composite belts. The utility model does not release harmful gas and smog when burning, has high safety, environmental protection and pollution-free, wide application range, and prolongs the service life of the product. This product adopts the structure of aluminum foil overall shielding and sub-shielding, which can effectively reduce the crosstalk between each line pair, has good shielding effect and strong anti-electromagnetic radiation ability. The appearance of the product of the utility model is clean and smooth, soft, low in smoke, flame retardant, halogen-free and environmentally friendly, and conforms to EU ROHS standards. So as to meet the design requirements of scientific and technological innovation, green environmental protection, safety and pollution-free. The utility model is widely used in the signal transmission of electronic computer systems, automation systems, and distribution systems with an AC rated voltage of 500V and below, as well as multiple pairs of shielded cables for connecting detection instruments and instruments.

Description of drawings

Accompanying drawing is the structural sectional view when the utility model has four cable inner cores.

Detailed ways

Below by accompanying drawing, the utility model patent is introduced.

The figure includes a cable inner core and a cable outer layer wrapped outside the cable inner core. The cable inner core is composed of two or more conductive wire cores 2 wrapped with an insulating layer 1 and wrapped around the conductive wire core 2. The polyester tape 3 is composed of the first composite tape 4 wrapped outside the polyester tape 3, the first composite tape 4 is provided with a ground wire 5, and the inner layer of the cable outer layer is an inner liner 6, The second composite tape 7 and the sheath layer 8, the second composite tape is provided with a ground wire 9, and the gap between the outer layer of the cable and the inner core of the cable is provided with a flame retardant filler 10.

The number of cable inner cores in the cable outer layer is one or more than one. The inner core of the cable can be formed by twisting two or more insulated cores, the insulated cores can appear in pairs, the geometric shape is fixed, the stability is high, and the influence on the bendability of the cable is small. The conductive wire core of the utility model adopts high-purity oxygen-free copper, and can have several layers, each layer has several strands of conductors with the same cross-section, each strand has several conductor monofilaments, and the twisting directions between layers are opposite.

The insulation layer is also called polyethylene insulation layer, and the sheath layer is also called polyethylene sheath layer. Both the insulation layer and the sheath layer are made of flame-retardant low-smoke halogen-free cable material, which is a kind of oxygen index High halogen-free environmental protection materials. Halogen-free cross-linked polyethylene insulation material is extruded, through special cross-linking treatment, the linear molecular structure of polyethylene is transformed into a three-dimensional network molecular structure, which greatly improves the electrical performance, physical performance, mechanical performance and anti-aging performance of the product And environmental adaptability and other special properties, not only high temperature resistance but also has the characteristics of non-flammability and no generation of highly corrosive hydrogen halide gas. In this way, the cable will not release harmful gas and smoke when burning, and will not cause "secondary disasters". It has high safety, environmental protection and no pollution, and can be laid for various specific occasions to prolong the service life of the product.

The inner lining layer is a polypropylene wrapping tape inner lining layer, that is, a high flame-retardant polypropylene (PP) inner lining layer wrapping tape, which isolates the insulating layer and the outer sheath layer, so as to prevent them from being bonded to each other and affecting the safety of the cable. Mechanical, physical, electrical properties, etc. The flame retardant filler is a flame retardant mesh tear filling rope, which is not easy to burn and can effectively protect the inner core of the cable.

The first composite belt and the second composite belt are aluminum-plastic composite belts. The ground wires 4 and 8 are tinned multi-strand soft twisted wires, which are used as ground drain wires to improve product safety. The aluminum-plastic composite tape has a total shielding plus ground wire structure. The aluminum foil in the aluminum-plastic composite tape is used as the total shield, and the ground wire structure is used as the sub-shield. The combination of the total shield and the sub-shield can effectively reduce the crosstalk between the wire pairs. , Strong anti-electromagnetic radiation ability.

Claims (9)

1. A low-smoke, halogen-free, flame-retardant electronic computer cable, including a cable inner core and a cable outer layer wrapped outside the cable inner core, characterized in that the cable inner core is composed of two or more conductive wires wrapped with an insulating layer. Wire core, polyester tape wrapped around the conductive wire core, and a first composite tape wrapped outside the polyester tape, the first composite tape is provided with a ground wire, and the outer layer of the cable is sequentially arranged from inside to outside. It is an inner liner, a second composite tape and a sheath layer, the second composite tape is provided with a ground wire, and the gap between the cable outer layer and the cable inner core is provided with a flame-retardant filler. 2. The low-smoke, halogen-free, flame-retardant electronic computer cable according to claim 1, wherein the number of cable inner cores in the outer layer of the cable is one or more. 3. The low-smoke, halogen-free, flame-retardant computer cable according to claim 1, wherein the inner lining layer is a polypropylene wrapping tape inner lining layer. 4. The low-smoke, halogen-free, flame-retardant electronic computer cable according to claim 1, wherein the insulating layer is a flame-retardant low-smoke, halogen-free cable material. 5. The low-smoke, halogen-free, flame-retardant electronic computer cable according to claim 1, wherein the sheath layer is a flame-retardant low-smoke, halogen-free cable material. 6. The low-smoke, halogen-free, flame-retardant computer cable according to claim 1, wherein the flame-retardant filler is a flame-retardant net-shaped tear-filled rope. 7. The low-smoke, halogen-free, flame-retardant electronic computer cable according to claim 1, wherein the ground wire is a tinned multi-strand soft stranded wire. 8. The low-smoke, halogen-free, flame-retardant computer cable according to claim 1, wherein the first composite tape is an aluminum-plastic composite tape. 9. The low-smoke, halogen-free, flame-retardant computer cable according to claim 1, wherein the second composite tape is an aluminum-plastic composite tape.

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