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High temperature and ultra high temperature wire and cable

Information Source:Henan Huadong Cable Co., Ltd  Release date:2014-03-13

High temperature cable classification: organic polymer materials and inorganic materials in high temperature cable high temperature cable.

(One) the organic polymer material high temperature cable is mainly the fluorine plastic and silicone rubber cable.

1, the fluorine plastics insulated wire and cable
The fluorine plastics is an important category of plastic, people usually understand fluorine plastic is from the contact plastics King - polytetrafluoroethylene (PTFE) began. In fact, PTFE is output and the largest amount of fluorine plastic varieties, fluorine plastic wire and cable commonly used are: fluorinated ethylene propylene (FEP, commonly known as F46), polytetrafluoroethylene (PTFE), ethylene tetrafluoroethylene copolymer (ETFE, commonly known as F40), polyvinylidene fluoride (PVDF) etc..
Fluorine plastic cable are: high temperature, high temperature resistant communication cable guide in line and assembly line, high temperature resistant power and control signal cable for high temperature compensating conductor and industry, atomic reactor radiation resistant cable and vehicle wire etc..

(2) silicon rubber insulated wire and cable
Silicone rubber is a polymer material with silicon element instead of the formation of carbon, silicon rubber has better heat resistance. Wire cable used silicone rubber methyl vinyl silicone rubber, working temperature range is -60 ℃ ~ 180 ℃. Silicone rubber with bending performance and better low temperature performance, not easy to damage and cracking, these properties are generally not high temperature cable with silicon rubber cable, so it has a wide scope of application, has been a bright spot of high-temperature cable.
Silicone rubber cable in the high temperature shift cable, soft power cable, electrical wiring, low temperature high temperature operation place.

(two) high temperature cable inorganic materials

Inorganic materials because of can not be extruded and excellent processing performance, thus formed cable insulation is more difficult, adhesion and uniformity is poor, and insulation performance is lower than the polymer materials, but the excellent high temperature performance, can meet the special high temperature industry demand.

1, mineral insulated cable
The structure of the product was copper conductors Magnesium Oxide insulated cable, power cable, control cable is mainly, heating cable and wire cloth. Normal working temperature is 250 ℃, but the actual operating temperature is higher, because Magnesium Oxide melting point is 2800 ℃, far above the melting point of copper cable, the fire even after repeated use.
The cable production is Magnesium Oxide shaped porcelain pillar in vitro wear in copper, copper conductor and the outer tube while pulling annealing and form, Magnesium Oxide porcelain column crushed evenly to form the cable insulation, mineral insulated cable production length is limited, large size is shorter.
Mineral insulated cable has the advantages of high temperature resistance, fire, explosion proof, waterproof, radiation resistance, strong corrosion resistance, high mechanical strength, good grounding performance, small size, long service life, large carrying capacity, strong overload capacity, etc..

2, inorganic coated with super high temperature cable insulation
Inorganic insulation package system generally adopts inorganic bag and wire cable, the cable with processed. Refractory belt as high temperature resistant material, can still keep normal insulating properties at 800 ℃ high temperature resistant cable, which is one of the main materials; alkali free glass fiber into inorganic silicon materials, has a certain insulation, melting temperature is 600 ℃, the braiding process, also as reinforcement; more than two kinds of materials not forming an insulating sealing and close, so the coating inorganic paint curing, silicon powder and borax etc, to form an insulator.
In inorganic materials, materials of high temperature resistance is more, but the processability and poor formability, according to the above method to form the cable insulation is also easy to damage, selection of different materials can be made according to the working temperature of 500 ℃, 800 ℃, 1000 ℃ cable or even, in addition to high temperature alloy conductor of this conductor should use nickel copper conductor or matching.

Ultra high temperature cable is often used in aerospace, military industry, heating furnace, chemical reactor, nuclear power plant and the iron and steel industry.

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