CN201435249Y - Polyethersulfone insulated high temperature resistant flame retardant control cable - Google Patents

Abstract

Polyethersulfone insulated high temperature resistant flame retardant control cable is characterized in that an insulating layer is extruded on a single or multiple stranded tinned copper conductors to form an insulated core, and multiple insulated cores are twisted into a cable to form a cable core; The cable core can be properly filled with high temperature resistant materials to form a filling layer, and the outer surface of the filling layer is wrapped with a tape layer, a longitudinal shielding layer and an extruded sheath layer; the wrapping layer is made of flame retardant and high temperature resistant glass fiber The material is cloth, and the insulating layer and the outer sheath layer are made of polyethersulfone PES extruded material; the shielding layer is made of soft copper tape longitudinally wrapped shielding layer, and a plurality of tinned copper wires are placed between the wrapping layer and the shielding layer. drainage line. The utility model has high temperature resistance, water vapor resistance, flame retardancy, acid and alkali chemical reagent resistance, environmental protection, and excellent electrical and mechanical properties.

Description

Polyethersulfone insulated high temperature resistant flame retardant control cable

technical field

The utility model relates to a control cable for electrical equipment, in particular to a high-temperature-resistant and flame-retardant control cable, which belongs to the technical field of electric wires and cables.

Background technique

At present, there are many varieties of high-temperature-resistant and flame-retardant control cables on the market. Their performance is mainly determined by the material properties of their insulating materials and sheath layers. The temperature-resistant grade of materials determines the temperature-resistant degree of cables. Currently commonly used are radiation cross-linked polyolefin, silicone rubber, fluororesin, polyimide, magnesium oxide and so on. With the development of society and economy, more and more high-temperature resistant cables are used in various industries, such as aerospace, rolling stock, energy, steel, non-ferrous metal smelting, oil exploration, motors, etc. The comprehensive performance requirements of control cables such as flame retardancy, high temperature resistance, environmental protection, electrical performance and mechanical performance are getting higher and higher, but the existing cable products cannot meet this requirement well.

Utility model content

The utility model aims at avoiding the disadvantages of the above-mentioned prior art, and provides an excellent heat resistance, physical and mechanical properties, electrical insulation properties, extruding formability, especially one that can be used continuously at high temperature and Polyethersulfone insulated high temperature resistant flame retardant control cable that still maintains stable performance in environments with rapid temperature changes.

The utility model adopts the following technical solutions:

The structural feature of the polyethersulfone insulated high temperature resistant flame retardant control cable is that the insulating layer is extruded on a single or multiple stranded tinned copper conductors to form an insulated core, and multiple insulated cores are twisted into a cable to form a cable core; The cable core can be properly filled with high temperature resistant materials to form a filling layer, and the outer surface of the filling layer is wrapped with a tape layer, a longitudinal shielding layer and an extruded sheath layer; the wrapping layer is flame retardant and high temperature resistant. The material is glass fiber cloth, the insulating layer and the outer sheath layer are made of polyethersulfone PES extruded material; the shielding layer is a soft copper tape longitudinally wrapped shielding layer, and multiple A drain wire consisting of a tinned copper wire.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The beneficial effect of the utility model is that the structural design is simple, scientific and reasonable, and the production is easy. The cable insulation layer and the outer sheath adopt polyethersulfone PES, which effectively improves the performance of the product. The cable has excellent heat resistance, physical and mechanical properties, electrical insulation properties, extrusion formability, especially has outstanding advantages such as continuous use at high temperatures and environments with rapid temperature changes and still maintains stable performance:

a. The heat distortion temperature is 200-220°C, the continuous use temperature is 180-200°C, and the UL temperature index is 180°C;

b. It can withstand 150-160 ℃ hot water or steam, and will not be corroded by acid and alkali at high temperature;

c. The elastic modulus is almost unchanged at -100-200 degrees, especially better than any thermoplastic resin above 100 degrees;

d. The linear expansion coefficient is small, and its temperature dependence is also small;

e. It is non-toxic, approved by the US FDA, and also meets the requirements of the Japanese Ministry of Health and Welfare Announcement No. 434 and No. 178;

f. It is self-extinguishing and has excellent flame retardancy without adding any flame retardant, which can reach UL94V-0 level.

2. The shielding layer in the utility model is wrapped vertically with copper tape and drain wires are added to make the cable shielding effect better. If the embossing process is used, the whole cable will be softer.

Description of drawings

Fig. 1 Structural schematic diagram of the utility model four-core polyethersulfone insulated high temperature resistant flame retardant control cable.

Labels in the figure: 1 conductor, 2 insulating layer, 3 filling layer, 4 wrapping layer, 5 drain wire, 6 shielding layer, 7 outer sheath.

The utility model will be further described below through specific embodiments in conjunction with the accompanying drawings.

Detailed ways

Referring to Fig. 1, in this embodiment, an insulating layer 2 is extruded on a single or multiple stranded tinned copper conductors 1 to form an insulated wire core, and a plurality of insulated wire cores are stranded to form a cable core; in the cable core The filling layer 3 can be properly filled with high temperature resistant materials, and the outer surface of the filling layer 3 is wrapped with the tape layer 4, the longitudinal shielding layer 6 and the extruded sheath layer 7 in sequence;

In the specific implementation, the wrapping layer 4 is made of flame-retardant and high-temperature-resistant glass fiber cloth, the insulating layer 2 and the outer sheath layer 7 are made of polyethersulfone PES extruded material; the shielding layer 6 is a 0.1mm soft copper strip longitudinal The wrapping shielding layer adopts embossing process, and a plurality of tinned copper wires are placed between the wrapping layer 4 and the shielding layer 6 to form a drain wire 5 .

Claims (1)

1. Polyethersulfone insulated high temperature resistant flame retardant control cable is characterized in that an insulating layer (2) is extruded on a single or multiple twisted tinned copper conductors (1) to form an insulated core, and is composed of multiple insulated wires The cores are twisted into a cable to form a cable core; the core can be properly filled with high-temperature resistant materials to form a filling layer (3), and the outer surface of the filling layer (3) is wrapped with a tape layer (4) and a longitudinal shielding layer ( 6) and an extruded sheath layer (7); the wrapping layer (4) is made of flame-retardant and high-temperature-resistant glass fiber cloth, and the insulating layer (2) and the outer sheath layer (7) are all made of polyester Ethersulfone PES extrusion material; the shielding layer (6) is an annealed copper strip longitudinally covering the shielding layer, and multiple tinned copper wires are placed between the wrapping layer (4) and the shielding layer (6) (5).

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