A graphene-coated building environmental protection cable

Abstract

The invention relates to the technical field of cables and particularly relates to a superconducting core building environment-friendly cable with a grapheme coating. The cable comprises cable core units which are orderly provided with copper alloy conductors, graphene plating layers and insulating layers from the inside to the outside. The cable core units are orderly coated with a tape, a PE inner sheath and a polyolefin sheath, and the space between the cable cores and the tape is filled with a filling layer. With the superconducting property and the excellent electromagnetic shielding performance of grapheme, a prepared novel conductive coating can be used in the cable. The graphene has an excellent characteristic of excellent electrical conductivity, a graphene conductive layer is made of the conductive coating, the thermal stability of a shielding layer is improved, the overall mechanical, electrical and chemical resistance performance of the cable is excellent, the cable is moreenergy-efficient and environment-friendly by setting a polyolefin insulation layer and is more durable by setting the polyolefin sheath, and the cable has a long service life.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to a graphene-coated building environmental protection cable. Background technique [0002] Cables can be divided into DC cables and AC cables according to the system of photovoltaic power plants, and can be divided into DC cables and AC cables according to the use and environment. Taking DC cables as an example, DC cables can be divided into: series cables between components, parallel cables between strings and between strings and DC distribution boxes, and cables between DC distribution boxes and inverters. These cables are all DC cables, which are often laid outdoors and need to be protected from moisture, sun exposure, cold, heat, and ultraviolet rays. In some special environments, they also need to be resistant to chemicals such as acids and alkalis. [0003] At present, the shielded cables used in our country's buildings are all transmission lines wrapped with metal mesh braid...

AI Technical Summary

Problems solved by technology

In practical applications, there are some problems that cannot be ignored in cables using metal mesh braids: due to the harsh requirements of the shielding system for grounding, it is very easy to cause poor grounding, such as excessive grounding resistance, unbalanced grounding potential, etc. There will be a potential difference between two points in the transmission system, which will generate a current on the metal shielding layer, causing the shielding layer to be discontinuous and destroying its integrity. In this way, the shielding layer itself has become the largest source of interference, which leads to its performance. On the contrary, it is far inferior to the unshielded system

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