Low-smoke nontoxic electrical insulating material

Abstract

The invention discloses a low-smoke nontoxic electrical insulating material, belonging to the technical field of power industry. The low-smoke nontoxic electrical insulating material overcomes the defects of high smoke density and high tendency to generate toxic gas in the existing electrical insulating material combustion process. The low-smoke nontoxic electrical insulating material is composed of the following raw materials in parts by weight: 200-300 parts of polycarbonate resin, 50-100 parts of glass fiber, 10-20 parts of acrylate elastomer, 30-40 parts of ethylene-vinyl acetate copolymer, 3-8 parts of dicumyl peroxide, 4-10 parts of polyethylene wax, 5-10 parts of tritolyl phosphate, 1-3 parts of molybdenum trioxide, 10-20 parts of aluminum hydroxide, 5-10 parts of calcined argil, 10-20 parts of ground calcium carbonate and 1-2 parts of 50-80% AS-coated PTFE (polytetrafluoroethylene) micropowder. The low-smoke nontoxic electrical insulating material can be widely used as a cable material, an insulating sleeve and a watt-hour meter casing material.

Description

technical field [0001] The invention relates to a low-smoke and non-toxic electrical insulating material, which belongs to the technical field of electric power industry. Background technique [0002] According to the national standard GB2900.5, the definition of insulating material is: "the material used to make the device electrically insulated". That is, a material that prevents the passage of electric current. Its resistivity is very high, usually in the range of 10 9 ~10 22 within the range of Ω·m. As in an electric motor, the insulation around the conductors isolates the turns from each other and from the grounded stator core to ensure safe operation of the motor. [0003] Different electrical equipment has different requirements for the performance of insulating materials. Electrical insulation materials not only require the material itself to have high insulation resistance and compressive strength, but also have high requirements for flame retardancy, thermal p...

AI Technical Summary

Problems solved by technology

In order to achieve the purpose of flame retardancy, the traditional method generally uses the addition of halogen-containing polymers or halogen-containing flame retardants. Once a fire occurs, a large amount of smoke and toxic gases will be generated, causing secondary disasters, and the halogen-containing raw materials will reduce the performance of insulating materials. Dielectric properties