High-flame-retardant, long-service-life and high-load low-smoke halogen-free building cloth wire and preparing technology

Abstract

The invention discloses a high-flame-retardant, long-service-life and high-load low-smoke halogen-free building cloth wire and a preparing technology. The high-flame-retardant, long-service-life and high-load low-smoke halogen-free building cloth wire comprises a copper conductor layer, conductor winding layers, a semiconducting medium coating, an inner insulating layer and an outer insulating layer. The outer side of the single copper conductor is coated with the multiple conductor winding layers formed by winding thin copper wires, the inner insulating layer is arranged on the outer sides of the conductor winding layers, gaps between the conductor winding layers and the inner insulating layer are filled with the semiconducting medium coating, and the outer insulating layer is fixedly arranged on the outer surface of the inner insulating layer. The current-carrying capacity of a cable conductor is increased through the composite conductor formed by the single core, the winding structure and the semiconducting medium coating. EVA and PE serve as base materials, corresponding-component assistants are added, an irradiation-cross-linking polyolefin material is modified, extrusion processing and irradiation are carried out, and the cloth wire cable has the long service life, the high flame resistance and the high cold resistance accordingly. The whole cable is completely designed through the low-smoke halogen-free system, the good fire-resistant effect and the good flame-retardant effect are achieved accordingly, toxic gas can not be generated, and harm to the human body is avoided under the fire condition.

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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