A kind of mineral filler material for electric cable and preparation method thereof

Abstract

The invention relates to a mineral filling material for cables and a preparation method thereof. The mineral filling material comprises the following components in percentage by volume: 60 percent of high-alumina cement, 15 percent of quartz powder, 15 percent of calcium carbonate, 1 percent of calcium stearate, 5 percent of hydrogen peroxide, 2 percent of lithium base enhanced powder and 2 percent of polypropylene fibers (PP). The base material refers to an inorganic mineral material, the mineral filling material disclosed by the invention is high in fire resistance and flame-retardant property and has high strength, and the selected materials do not produce toxic and harmful substances under high-temperature conditions and are slight in environmental influence.

Description

technical field [0001] The invention relates to the technical field of transmission cable production, in particular to a mineral filler material for cables and a preparation method thereof. Background technique [0002] In the cable production process, in order to ensure the roundness of the cable and avoid the friction between the core wires, it is necessary to add filling materials between the core wires. The existing cables often use non-flammable glass fiber materials, halogen-containing resistors Fill it with combustible materials or flame-retardant rock wool ropes; halogen-containing cables will produce a large amount of toxic smoke in the event of a fire, hindering firefighting and evacuation of personnel, and causing secondary hazards; glass fiber materials are easy to overflow and form glass in the air. Fiber dust, flame-retardant rock wool rope contains carcinogens, which affect the health of production workers, and this type of filler affects the heat conduction a...

AI Technical Summary

Problems solved by technology

[0002] In the cable production process, in order to ensure the roundness of the cable and avoid the friction between the core wires, it is necessary to add filling materials between the core wires. The existing cables often use non-flammable glass fiber materials, halogen-containing resistors Fill it with combustible materials or flame-retardant rock wool ropes; halogen-containing cables will produce a large amount of toxic smoke in the event of a fire, hindering firefighting and evacuation of personnel, and causing secondary hazards; glass fiber materials are easy to overflow and form glass in the air. Fiber dust, flame-retardant rock wool rope contains carcinogens, which affect the health of production workers, and this type of filler affects the heat conduction and heat dissipation of the cable, which in turn affects the transmission capacity of the cable and the loss of the rated current in the conductor of the same cross-section; currently other The filling material has the problems of poor flame retardancy and fire resistance