Ice coverage preventing electricity transmission cable and production method therefor

Abstract

The invention discloses an ice-coating resistant transmission cable and a manufacturing method thereof, and super-hydrophobic preparation technology is applied to a cable. The n-hexatriacontane of the adopted coating material is saturated alkanes, belongs to chemical inert material and has a good tolerance to the environment; in addition, the n-hexatriacontane is a hydrophobic material and has a low surface energy of only 20 mJ / m<2> . Because PVD technology is utilized to form a super-hydrophobic layer on the surface of a cable, the technology has no special requirement for the cable material components and thus wide applicability is available. After a super-hydrophobic layer is formed, rain water or wet snow is hard to adhere to the surface of a cable; therefore, the occurrence of an ice-coated grid is fundamentally inhibited; on the other hand, even if a small quantity of water droplets condenses on the surface of a cable, the formation of initial frost crystals is greatly delayed because the contact angle formed by water droplets is very large, which is conductive to avoid the occurrence of destructive frozen disasters; moreover, the formed frost crystals are loose in structure and easier to remove.

Description

technical field

[0001] The invention relates to a power transmission cable and a production method. Background technique

[0002] my country is one of the countries most seriously threatened by icing disasters on transmission lines, and the probability of ice damage accidents is very high. Especially since the beginning of winter in recent years, the southern region often suffers from continuous low temperature, rain and snow, which makes the power lines seriously covered with ice and the power equipment suffers huge damage. According to incomplete statistics, only from mid-January to early February 2008, a total of 35,968 lines and 1,731 substations were out of service nationwide due to snow disasters, and 8,868 towers of 110 kV to 500 kV lines were downed. The partial collapse caused the transportation system of 17 provinces and regions in the central, southern and eastern regions to be paralyzed, bringing huge losses to the development of the national economy and people'...

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