Flame-retardant building power sheath material and preparation method thereof

Abstract

The invention discloses a flame-retardant building power sheath material and a preparation method thereof. The flame-retardant building power sheath material is prepared from the following raw materials in parts by weight: 21-38 parts of linear low density polyethylene, 15-25 parts of SG-2 type polyvinyl chloride resin, 16-22 parts of methylpentachlorostearate, 10-15 parts of quartz sand, 14-23 parts of semi-reinforced carbon black, 10-20 parts of lithium base bentonite, 11-15 parts of triphenyl phosphate, 33-36 parts of chlorinated paraffin, 10-20 parts of brominated polystyrene, 3-9 parts of attapulgite, 6-10 parts of a light screening agent, 2-6 parts of an antioxidant, 5-8 parts of a flame retardant and 2-6 parts of a stabilizer. According to the sheath material disclosed by the invention, the main body consists of linear low density polyethylene and lithium base bentonite, and SG-2 type polyvinyl chloride resins, methylpentachlorostearate, quartz sand, semi-reinforced carbon black, triphenyl phosphate, chlorinated paraffin, brominated polystyrene and attapulgite are added, so that the obtained cable sheath material has the advantages of high flame-retardant property, short burning distance and fast self-extinguishing time. The preparation process is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of cable sheath production, in particular to a flame-retardant building power sheath material and a preparation method thereof. Background technique [0002] The cable jacket is a layer of rubber or rubber synthetic sleeve that protects the cable from damage caused by the natural environment and external factors, and can insulate to ensure that foreign objects are not damaged. Cables are the basic bridges for building power systems. They are distributed in various environmental conditions. Some areas are extremely cold, the temperature difference between day and night is large, and ultraviolet radiation is strong. In some areas, high temperature, heavy rainfall, and high temperature cause rapid aging of the sheath and long service life. Short, prone to cracking, and flammable, it poses a greater threat to people's lives. Although a variety of cable sheath materials have been prepared at present, they stil...

AI Technical Summary

Problems solved by technology

[0003] As we all know, the cable sheath is a layer of rubber wrapped around the cable core to insulate and protect the inner conductor. The quality of the cable sheath depends on the insulation performance, fire resistance and mechanical properties of the sheath, while Due to the unreasonable matching of the traditional 105°C cable sheath, the insulation performance is average compared with other types of sheaths. After the sheath is put into actual production, it is prone to leakage or even breakdown by high voltage, resulting in sheath burning. damage or cause a fire, endangering the safety of people's lives and property