Radiation-resistant and flame-retardant ethylene propylene diene monomer cable insulation material for nuclear power plant

Abstract

The invention discloses a radiation-resistant and flame-retardant ethylene propylene diene monomer cable insulation material for a nuclear power plant. The radiation-resistant and flame-retardant ethylene propylene diene monomer cable insulation material comprises the following materials in parts 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 copolymer, 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 nano-aluminium hydroxide, 1-1.5 parts of an aluminium-zirconium coupling agent TL-5, 4-8 parts of 1,1,3,3-tetramethyl butyl hydrogen peroxide, 0.5-1.1 parts of sulfur powder, 0.8-1.2 parts of an assistant crosslinker TAIC, 0.4-0.8 part of an assistant crosslinker HVA-2, 2-4 parts of melamine cyanurate, 4-6 parts of aluminum oxide, 2-5 parts of triphenyl phosphite, and 3-4 parts of an antiager. The radiation resistant and flame retardant ethylene propylene diene monomer cable insulation material has the advantages of excellent radiation resistance, excellent mechanical performance, excellent flame retardant property, excellent pull-resisting and wear-resisting properties and long service life, and is suitable for high radiation sites, particularly the nuclear power plant.

Description

technical field [0001] The invention relates to the technical field of cable insulating materials, in particular to a radiation-resistant and flame-retardant EPDM cable insulating material for nuclear power plants. 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, an...

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.

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