Mouseproof optical cable

Abstract

The invention discloses a mouseproof optical cable which comprises a cable core, an outer sheath, and a soft armor layer. The outer sheath coats the cable core. The soft armor layer coats the outer sheath and is made of a PA12 material. The structure of the mouseproof optical cable is simple, the soft armor layer can effectively prevent the optical cable from being bitten, the integrity of the optical cable is ensured, the weight of the optical cable is not increased, and the production cost is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of optical fiber transmission, in particular to a mouse-proof optical cable. Background technique [0002] At present, there are two ways to prevent rats from damaging optical cables in the market. One is chemical method, that is, mixing repellent into the outer sheath to prevent rats; the other is physical method, mainly through steel tape armoring, steel wire The armor uses the hardness of the metal to prevent rats from biting, and also adds glass yarn to the inside of the outer sheath to use the sharpness of the glass yarn after being bitten by rats to pierce the throat of rats to prevent rats. The method of adding repellent substances in the sheath material of the optical cable is mainly by adding strong irritating chemical substances such as capsicum, which has the advantages of low cost and little change in the structure of the optical cable. The environment is polluted, the personnel in the processin...

AI Technical Summary

Problems solved by technology

The method of adding repellent substances in the sheath material of the optical cable is mainly by adding strong irritating chemical substances such as capsicum, which has the advantages of low cost and little change in the structure of the optical cable. The environment is polluted, the personnel in the processing process, and the water source are polluted, and the service life has not been verified

Using physical methods, using metal insulation, such as steel wire and steel belt, etc., has the advantages of obvious anti-rat effect, no pollution to the environment, and no pollution during processing. The disadvantage is that the cost increases, and the outer sheath of the optical cable needs maintenance. Its own weight increases. When the outer sheath is bitten by mice, the steel strip will be corroded in contact with the air for a long time, and the flexibility of the optical cable with steel armor will decrease.

The advantage of using glass yarn is that it has obvious rodent-proof effect and does not increase the weight of the optical cable. The disadvantage is that it is harmful to the environment, especially for operators. Because the glass fiber is small and easy to break, it is easy to be sucked into the lungs and irritate the skin. Calcification of the lungs, causing "silicosis" is more harmful than "pneumoconiosis", and the glass yarn is easy to absorb water. When the outer sheath is broken, the glass yarn can resist mice, but because it is easy to absorb water, it will cause its own damage to the optical cable. The glass yarn after absorbing water has a strong corrosion effect, which will affect the optical cable

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