A high-flame-retardant, high-life, high-load, low-smoke, halogen-free building cloth wire and its preparation process

Abstract

The invention discloses a high-flame-resistance, high-life, high-load, low-smoke, halogen-free building cloth wire and its preparation process, including a copper conductor layer, a conductor winding layer, a semiconductive dielectric coating, an inner insulating layer and an outer insulating layer, and a single copper wire The outside of the conductor is covered with a number of conductor winding layers composed of thin copper wires. The outer surface of the conductor winding layer is provided with an inner insulation layer. The gap between the conductor winding layer and the inner insulation layer is filled with a semi-conductive dielectric coating. The outer surface of the inner insulation layer Fixedly provided with an outer insulating layer. The current carrying capacity of the cable conductor is increased through the composite conductor with single core plus winding structure and semiconductive dielectric coating. Using EVA+PE as the base material and adding the corresponding components of additives, a kind of radiation cross-linked polyolefin material is modified. After extrusion processing and irradiation, the cloth wire and cable have high service life, high flame retardancy, High cold resistance. The whole cable is designed with low-smoke and halogen-free system, so as to achieve good fire-resistant and flame-retardant effect, and does not produce toxic gas, so as to avoid harm to people in case of fire.

Description

technical field [0001] The invention relates to the technical field of wire and cable polymer material formula and cable technology, in particular to a preparation process of high flame-retardant, high-life, high-load, low-smoke, halogen-free building cloth wire. Background technique [0002] The application of electrical wires in the process of home decoration is closely related to personal and property safety. According to statistics from the fire department, most building fires are caused by wires and cables catching fire. Therefore, the quality of home improvement cloth wires is particularly important in the home improvement process. [0003] Wires and cables are similar to the blood vessels and nerves of the human body. In high-rise buildings, villas, family houses, hotels, hospitals, office buildings, schools, shopping malls and other crowded places, they are responsible for power supply, signal control and communication. The chief culprit of the second disaster, when...

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Problems solved by technology

[0003] Wires and cables are similar to the blood vessels and nerves of the human body. In high-rise buildings, villas, family houses, hotels, hospitals, office buildings, schools, shopping malls and other crowded places, they are responsible for power supply, signal control and communication. The chief culprit of the second disaster, when a fire occurs, the ignited general cable will release a large amount of toxic gas and dense smoke, which will not only corrode the instrumentation equipment, cause the equipment to be paralyzed, but also cause people to suffer from inhalation of smoke. Cause poisoning or even death. If the cable is ignited in a small and closed space, it will quickly consume the oxygen in the space and produce poisonous gas, causing the personnel to die of hypoxia and suffocation immediately.

[0004] The existing GB / T 5023.3 standard BV cloth wire products have low flame retardancy, short life, low ampacity, and the cables are prone to embrittlement and cracking at -20°C, especially when the cables are burning and produce a lot of harmful smoke and toxic substances

Moreover, traditional wiring such as telephones and computer local area networks are independent, and cannot integrate composite cables with multi-purpose requirements such as home improvement communication, power transmission, and lighting. The wiring process is complicated and the construction cost is high.

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