Radiation-resistant flame-retardant cable insulation material and preparing method thereof

Abstract

The invention discloses a radiation-resistant flame-retardant cable insulation material. The radiation-resistant flame-retardant cable insulation material is prepared from, by weight, 80-90 parts of ethylene propylene diene monomer, 30-40 parts of chloroprene rubber, 40-50 parts of ABS resin, 20-30 parts of ethylene-tetrafluoroethylene copolymers, 10-20 parts of barium sulfate, 10-15 parts of lead oxide, 20-25 parts of rare earth oxide, 10-20 parts of silicon nitride, 15-25 parts of hard clay, 20-30 parts of nanometer hydrogen peroxide, 1-1.5 parts of an aluminum zirconium coupling agent TL-5, 4-8 parts of 1,1,3,3-tetramethylbutyl hydroperoxide, 0.5-1.1 parts of sulfur powder, 0.8-1.2 parts of an assistant cross-linking agent TAIC, 0.4-0.8 part of an assistant cross-linking agent HVA-2, 2-4 parts of melamine cyanurate, 4-6 parts of magnesium oxide, 2-5 parts of triphenyl phosphate, 3-6 parts of zinc stearate and 3-4 parts of an anti-aging agent. The radiation-resistant flame-retardant cable insulation material is excellent in radiation resistance, good in mechanical performance, flame-retardant resistance and tensile and wear resistance, long in service life and suitable for high-radiation fields, and particularly, is suitable for nuclear power stations.

Description

technical field [0001] The invention relates to the technical field of cable insulating materials, in particular to a radiation-resistant and flame-retardant cable insulating material and a preparation method thereof. Background technique [0002] Wind energy, nuclear energy and solar energy are all clean energy, which are used by human beings, and all kinds of energy need cables. Nuclear power plant cables are an important electrical component of nuclear power plants, and the conditions of their places of use 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, resulting in failure of the sheath material and affecting the normal operation of the nuclear power plant. Cables for wind energy cannot be used in nuclear power plants. [0003] Ordinary cables are not suitable for nuclear power plant cables due to their poor radiation resistance,...

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. Cables for wind energy cannot be used in nuclear power plants

[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.

Images