Anti-breakdown cable

Abstract

The invention belongs to the field of cables, and specifically relates to an anti-breakdown cable. The anti-breakdown cable comprises a conductor, wherein the conductor is sleeved with an insulating layer, a shielding layer, a middle layer, a waterproof layer, a fireproof high temperature-resisting layer, and an outer sheath in sequence from inside to outside, and the shielding layer is made of anano composite graphene shielding material. A synthesis method of adding the nano composite graphene shielding material is applied to power cables. The process is easy to perform, raw materials are relatively easy to obtain, and due to add of the nano composite graphene shielding material, the cable has higher thermal stability at high temperature and lower hygroscopicity and can help improve production low viscosity and improve breakdown strength of the shielding material.

Description

technical field [0001] The invention belongs to the field of cables, and in particular relates to a breakdown-resistant cable. Background technique [0002] With the advancement of science and the improvement of people's living standards, electricity is more and more closely related to our lives. Wire and cable are one of the necessary supporting products when using electrical products. They play the role of transmitting electricity, transmitting information and realizing electromagnetic energy conversion. It is mainly composed of four basic structures, which are conductor, shielding layer, insulating layer and sheathing layer. [0003] At present, copper is the most commonly used conductor for power cables, but it has high cost, relatively large resistive loss and poor corrosion resistance. The material of the power cable shielding layer is mainly made by uniformly dispersing and adding conductive carbon black in the polymer, but because the conductivity of carbon black is...

AI Technical Summary

Problems solved by technology

[0004] Chinese utility model patent, authorized notification number CN205582608U discloses a nano-graphene low-voltage power cable, which uses a nano-graphene layer on the surface of the conductor to improve the electrical conductivity, but because the conductivity of the copper conductor is not as strong as that of graphene, the electrical conductivity There is still room for improvement, and nano-graphene is easy to agglomerate, which is not conducive to the improvement of electrical conductivity; Chinese patent literature, authorized notification number CN103739929B discloses a polyolefin high semi-conductive shielding material containing graphene for cables and a preparation method thereof, which uses graphene Evenly disperse into ethylene-vinyl acetate copolymer to improve the shielding effect, but the bonding force between the inorganic material and the polymer copolymer is low, it is difficult to uniformly disperse graphene, and it is prone to permeation during use