Cable material with high expansion force

Abstract

The invention discloses a cable material with high expansion force, and is characterized in that the cable material comprises the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin, 40-50 parts of PVC resin, 15-20 parts of PBT resin, 15-18 parts of dibutyl phthalate, 10-12 parts of benzoyl peroxide, 7-10 parts of dipentaerythritol hexaacrylate, 2-4 parts of a silane coupling agent, 0.6-0.8 part of an antibacterial agent, 10-15 parts of straw ash, 3-5 parts of graphite, 3-5 parts of an anti-aging agent, 16-18 parts of a filling material, and 4-6 parts of silicone rubber. The cable material extends the aging resistance of the cable material, the filling material has the advantages of stable chemical structure, good gelation ability and high expansion ability, prolongs the service life of a cable, and saves the resources; a copper body is protected from avoiding oxidation, the copper body cannot be damaged, the service life is extended, the cost is saved, and the efficacy is improved; the addition of the straw ash, the requirements of the standards on environmental protection are met; and the extrusion process performance is excellent.

Description

technical field [0001] The invention belongs to the technical field of cable materials, in particular to a cable material with high expansion force. Background technique [0002] The application of high-voltage power cables in my country is very common and extensive. Most of the high-voltage power cables are laid underground and the environment is mostly humid. Moisture can easily penetrate into the interior of the cable structure. Therefore, under normal high-voltage energization, the theory of electrical stress believes that the internal stress of the cable during production and operation is the main reason for promoting the growth of water branches. When the cable is subjected to voltage and water, in the high-voltage power frequency electric field, the polar water molecules migrate strongly and convert the electric field energy into kinetic energy and heat energy, and the water molecules with huge energy move violently inside the insulation. The insulation level of the ...

AI Technical Summary

Problems solved by technology

Oxidation of copper conductors may occur during the production of cables, and the existing solution is to block the contact between copper and air, or use a passivation film to isolate the contact between copper and the outside world. Damage to the copper body itself seriously affects the performance of the cable and shortens its service life