Insulated B1-level flame-retardant power cable

Abstract

The invention discloses an insulated B1-level flame-retardant power cable, and belongs to the technical field of cables, wherein the insulated B1-level flame-retardant power cable comprises a conductive core and a flame-retardant insulating layer coating the surface of the conductive core, and the flame-retardant insulating layer is prepared from the following raw materials in parts by weight: 75-86 parts of polyethylene resin, 40-45 parts of polyethylene glycol, 1-2 parts of a plasticizer, 3-5 parts of a flame retardant, 0.5-0.8 part of an antioxidant, 0.3-0.5 part of a stabilizer, 2.5-4 parts of talcum powder and 3-6 parts of a lubricant. the surface of magnesium hydroxide is modified, so that the surface is coated by adsorption on the surface of magnesium hydroxide, and the surface of magnesium hydroxide is changed from hydrophilic and oleophobic to hydrophobic and oleophylic, so that the obtained magnesium hydroxide has relatively good lipophilicity and dispersity; and the compatibility with polyethylene resin and the dispersity in the polyethylene resin can be improved, and the flame retardant property of the cable is improved on the premise that the mechanical property of the polyethylene resin is not influenced.

Description

technical field [0001] The invention belongs to the technical field of cables, and relates to an insulated B1-class flame-retardant power cable. Background technique [0002] With the rapid development of the national economy, the amount and scope of use of wires and cables are getting bigger and bigger. In recent years, industries such as power plants, substations, smelting and petrochemical industries have a great demand for control cables. In use, it is necessary not only to avoid mechanical damage, insulation damage, insulation aging and deterioration of the control cable, but also to have the effect of fire prevention. [0003] Cable material is a general term for plastics used for wire and cable insulation and sheathing. It is made of rubber, plastic, nylon and other materials as base materials, combined with auxiliary components such as plasticizers, fillers, color masterbatches, and antioxidants. Different types of cables and The use environment has different requi...

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Problems solved by technology

[0003] Cable material is a general term for plastics used for wire and cable insulation and sheathing. It is made of rubber, plastic, nylon and other materials as base materials, combined with auxiliary components such as plasticizers, fillers, color masterbatches, and antioxidants. Different types of cables and The use environment has different requirements on the performance of cable materials. Most of the commercially available cable materials are not resistant to scratches and folds, are easy to corrode and oxidize the internal metal wires, have poor flame retardancy, cannot balance hardness and toughness, and are highly toxic when burned. Resistance to humidity, cold and heat

[0004] Since the cable material is mainly composed of carbon, hydrogen, oxygen and other elements, most cable materials are combustible and flammable materials. When burning, the heat release rate is high, the calorific value is high, the flame spreads fast, it is not easy to extinguish, and sometimes it produces thick smoke. and toxic gases, causing harm to the environment and a huge threat to people's lives

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