Radiation-resistant and flame-retardant nuclear power station cable insulating material and preparation method thereof

Abstract

The invention discloses a radiation-resistant and flame-retardant nuclear power station cable insulating material. The radiation-resistant and flame-retardant nuclear power station cable insulating material comprises the following raw materials in parts by weight: 90-100 parts of an ethylene-propylene-diene monomer, 30-40 parts of neoprene, 50-60 parts of ABS resin, 20-30 parts of an ethylene-tetrafluoroethylene copolymer, 15-25 parts of barium sulfate, 10-15 parts of lead oxide, 20-25 parts of rare earth oxide, 10-20 parts of silicon nitride, 20-25 parts of nanotalcum powder, 15-25 parts of hard pottery clay, 20-30 parts of nanomagnesium hydroxide, 1-1.5 parts of a zircoaluminate coupling agent TL-5, 4-8 parts of 1, 1, 3, 3-tetramethylbutyl hydroperoxide, 0.5-1.1 parts of sulphur powder, 0.8-1.2 parts of an assistant crosslinking agent TAIC, 0.4-0.8 part of an assistant crosslinking agent HVA-2, 2-4 parts of sodium crotonate, 4-6 parts of magnesium oxide, 2-5 parts of triphenyl phosphate, 3-6 parts of zinc stearate and 3-4 parts of an antiager. The invention further discloses a preparation method of the radiation-resistant and flame-retardant nuclear power station cable insulating material.

Description

technical field [0001] The invention relates to the technical field of cable insulating materials, in particular to a radiation-resistant and flame-retardant nuclear power plant cable insulating material and a preparation method thereof. Background technique [0002] Nuclear power plant cables are an important electrical component of nuclear power plants, and the conditions in which they are used are relatively harsh. When a high-energy tube rupture accident occurs in a nuclear power plant, the cable will be subjected to the dual effects of high temperature and high-energy radiation, which will cause the sheath material to fail and affect the normal operation of the nuclear power plant. [0003] Ordinary cables are not suitable for nuclear power plant cables due to their poor radiation resistance, and cannot cope with harsh radiation environmental conditions, resulting in short service life of the cables and potential safety hazards. At present, wires and cables improve the...

AI Technical Summary

Problems solved by technology

When a high-energy tube rupture accident occurs in a nuclear power plant, the cable will be subjected to the dual effects of high temperature and high-energy radiation, resulting in failure of the sheath material and affecting the normal operation of the nuclear power plant

[0003] Ordinary cables are not suitable for nuclear power plant cables due to their poor radiation resistance, and cannot cope with harsh radiation environmental conditions, resulting in short service life of the cables and potential safety hazards

At present, wires and cables improve the radiation resistance and other properties of the material by increasing the oxygen index of the insulating material of the sheath, or the material has shell forming properties, but the physical and mechanical properties of the insulating material are greatly reduced.