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Fire-resistant wires and cables

I. Fire-retardant and fire-resistant protection of fire-resistant cables

In places with extremely high fire safety requirements, such as buildings, subways, and nuclear power plants, fire-resistant cables must be able to maintain circuit continuity during a fire. Yuefeng mica tape (especially synthetic mica tape) is the core insulating material for such cables:

When the cable encounters an open flame, the mica tape can maintain structural stability at high temperatures of 300-1000℃, forming a ceramic insulation layer, blocking the spread of flames and maintaining insulation performance, ensuring that the cable continues to supply power during the initial stage of a fire (usually 1-3 hours), buying time for personnel evacuation and emergency rescue.

Compared with traditional flame-retardant materials, Yuefeng mica tape is halogen-free and non-toxic, and does not release harmful gases during combustion, meeting environmental protection and safety standards (such as GB/T 19666-2005 "General specifications for flame-retardant and fire-resistant wires and cables").

II. Cable insulation in high-temperature environments

In high-temperature scenarios such as industrial furnaces, metallurgical equipment, and aerospace, the insulation layer of ordinary cables is easily damaged due to high-temperature aging. Yuefeng mica products (such as mica paper and mica board), as the high-temperature insulation layer of cables:

Can withstand long-term operating temperatures of 200-600℃ (phlogopite products can even reach above 800℃), effectively isolating the conductor from the external environment and preventing insulation breakdown.

For example, in kiln temperature measurement cables and automotive engine compartment harnesses, the Yuefeng mica insulation layer can resist continuous high-temperature radiation and extend the service life of the cables.

III. Enhanced insulation of high-voltage cables

High-voltage cables such as high-voltage transmission lines and transformer leads have strict requirements for insulation strength. Yuefeng mica composite materials (such as mica-impregnated resin layers) are used for the main or auxiliary insulation of cables:

Its breakdown voltage can reach above 15kV/mm, and it can withstand the electric field strength under high voltage, preventing partial discharge and corona phenomena, and reducing the rate of insulation aging.

At the same time, the chemical stability of mica can resist the influence of environmental factors such as moisture and oil stains, ensuring the stable operation of high-voltage cables in outdoor or complex industrial environments.

IV. Structural support and protection of special cables

In flexible cables and frequently twisted moving cables (such as robot arm cables and elevator cables), Yuefeng mica tape or mica film combines flexibility and mechanical strength:

As a cable wrapping layer, it can provide insulation protection and enhance the tensile and torsional resistance of the cable, preventing damage to the conductor due to mechanical stress.

In addition, in anti-corrosion cables, the mica layer can block the corrosion of acids, alkalis, and chemical gases on the conductor, making it suitable for special environments such as chemical and marine environments.