Graphene-copper composite core light-weight fireproof flexible cable used for data center power supply

Abstract

The invention discloses a graphene-copper composite core light-weight fireproof flexible cable used for a data center power supply. The cable comprises a graphene-copper composite core, a fireproof layer and a 90-DEG C butyronitrile modified flexible polyvinyl chloride insulating layer from inside to outside in sequence; the graphene-copper composite core is formed by multiple flexible single copper wires in a stranded manner; the gaps of the copper wires are filled with graphene conductive adhesive; and the outer layer is tightly and longitudinally wrapped with a semi-conductive elastic wrapping band. By adoption of the annealed flexible thin copper wires and graphene conductive adhesive for absorbing heat after power on, the flexibility of the composite conductor is further improved; inaddition, by adoption of the 90-DEG C butyronitrile modified flexible polyvinyl chloride insulating layer, elasticity of the insulating material is improved while the insulativity is ensured; the overall cable bending radius is four times of that of the conventional cable, and the index which is better than six times of that of the conventional cable is realized, so that the cable is more suitablefor being laid in a narrow space; and by adoption of wrapped high-performance fireproof wrapping band material, it is ensured that the fireproof level can reach A level 1,000 DEG C of GB / T12666.

Description

technical field [0001] The invention relates to a graphene-copper composite core light-weight fire-resistant flexible cable for a data center power supply, in particular to a processing method for a graphene-copper composite core material fire-resistant flexible cable. Background technique [0002] The current carrying capacity of a cable is determined by the conductivity of the conductor. At present, the cables used in the construction of base stations and data centers in the communication industry generally use pure copper core cables. With the increasing power consumption of 5G and the access of high-load equipment, the only way to ensure a higher current-carrying capacity is to increase the cross-sectional area of ​​the cable. However, The increase of the section will inevitably increase the weight and outer diameter of the cable, and increase the cost of the product and the difficulty of construction. Therefore, it is urgent to find a material with high conductivity and...

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Problems solved by technology

[0004] Chinese authorized patent CN201410194397.2 a kind of preparation method of wire and cable with copper-graphene composite phase conductive core, CN201410193891.7 a kind of core-sheath structure conductive wire core of wire and cable and its preparation method etc. disclose the copper-graphene The preparation principle of the graphene composite cable conductor material is described, mainly the copper-graphene composite conductor prepared by the chemical reduction reaction of the metal by the chemical solution, the composite conductor prepared in this way consumes a lot of resources and energy consumption , it is difficult to mass-produce in enterprises, and should stay in the laboratory stage

[0005] China's authorized patents CN201610054970.9 a highly conductive graphene fiber and its preparation method, CN201410421879.7 a conductive and thermally conductive graphite composite wire and its preparation method, etc. disclose a cable with a graphene fiber medium, and the graphene fiber filament reaches μm Grade, with ultra-fine fiber filaments as conductors, the multi-strand bundle process is easy to break, and the processing is difficult

Moreover, due to the high hardness of wire and cable conductors with graphene as the main conductive medium, it is not conducive to laying in some occasions with mobile requirements.

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