Rat-proof optical cable, preparation method thereof, and outer sheath material of rat-proof optical cable

A technology of outer sheath and optical cable, which is applied in the field of optical fiber and optical cable, can solve the problems of difficult construction, high cost of armoring materials, and thick cable diameter, and achieve the effects of simple and convenient preparation method, improved production rate, and preventable tensile properties

Active Publication Date: 2017-08-18
JIANGSU TRIGIANT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the effect of physical rodent prevention is better, but due to the high cost of armoring materials, low efficiency of optical cable production process, heavy weight of optical cable, and difficulty in construction with thick cable diameter, the cost of optical cable is increased.
However, chemical rodent control will cause environmental pollution due to the use of chemical materials, and will affect the health of operators during the production process, and the effect of rodent control is not ideal, so this method is rarely used now

Method used

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  • Rat-proof optical cable, preparation method thereof, and outer sheath material of rat-proof optical cable
  • Rat-proof optical cable, preparation method thereof, and outer sheath material of rat-proof optical cable
  • Rat-proof optical cable, preparation method thereof, and outer sheath material of rat-proof optical cable

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Effect test

Embodiment 1

[0023] like figure 1 As shown, the present invention provides a rodent-proof optical cable, including a cable core, the cable core is twisted by a central reinforcement 2 and several bundle tubes 3 surrounding the reinforcement, and inside the bundle tube 3 Several optical fibers 1 are provided; a stainless steel band 6 is wrapped around the cable core, and an outer sheath 4 is extruded at the outermost layer of the cable core; It is a 2.5mm crimped stainless steel strip, and hot melt glue is injected into the overlapping part of the crimped steel strip, and then a plurality of stainless steel wires 5 with a diameter of 0.4mm are wrapped around the crimped stainless steel strip, which prevents rodents from using their teeth Pry off the strap joints.

[0024] As a further improvement, the material of the bundle tube 3 is polyurethane, which is more stable than PBT and easier to form, which is convenient for the bundle tube 3 to be made smaller. The outer diameter of the bundle...

Embodiment 2

[0029] The present invention also provides a preparation method of the anti-rat optical cable, comprising the following steps:

[0030] 1) The optical fiber is cured and colored by UV. The tension of the optical fiber is 65g±5g, the tension of the take-up is 75g±5g, and the production speed is 2400m / min. In order to ensure the quality of curing, two curing furnaces are used for curing. In the curing furnace The nitrogen injection method is adopted in the glass tube, the pressure flow valve is 0.4MPa, the pressure injection valve is 3 MPa, the ink coating pressure is 0.35MPa, and the ink mold is heated, and the working temperature needs to reach 65±5℃;

[0031] 2) Put the optical fiber into the polyurethane bundle tube through the oil needle, and pass through the hot water tank and the cold water tank for secondary cooling. The temperature of the hot water tank is 30~33°C, and the temperature of the cold water tank is 25~28°C. The take-up tension is 3~5N, and the production spe...

Embodiment 3

[0038] The present invention also provides an outer sheath material for an anti-rodent optical cable, comprising the following components in parts by mass: 25 parts of modified high molecular weight polyethylene, 3 parts of polyphenylene sulfone resin, 9 parts of thermoplastic polyurethane elastomer, 1 part of mixture of tetrapentaerythritol and triester of phosphite, 2 parts of carbon black masterbatch, 0.5 part of rheology modifier, 1 part of stearic acid, 0.5 part of zinc stearate, 3 parts of diatomaceous earth, β-type 1 part of hemihydrate gypsum, 2 parts of silicon dioxide, 1 part of asbestos fiber, 5 parts of goat pollen.

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Abstract

The invention provides a rat-proof optical cable, a preparation method thereof, and an outer sheath material of the rat-proof optical cable. The rat-proof optical cable comprises a cable core which is formed by stranding a central reinforcement piece and a plurality of beam tubes around the reinforcement piece, and the beam tubes are internally provided with a plurality of optical fibers. The cable core is wrapped by a stainless steel belt, and an outer sheath is extruded at the outermost layer of the cable core. The stainless steel belt is a lipped stainless steel belt with the lipped width of 5mm and the height of 2.5mm, and firstly hot melt adhesive is injected into the joint of the lipped steel belt and then the lipped stainless steel belt is wrapped by multiple stainless steel wires with the diameter of 0.4mm. According to the rat-proof optical cable provided by the invention, under the premise of ensuring structural strength and tensile performance, the bite of rats is effectively prevented, the preparation method is simple and convenient, and the outer sheath used by the optical cable has the effects of wear resistance, low smoke, non halogen, and rat control.

Description

technical field [0001] The invention relates to the field of optical fiber cables, in particular to a rat-proof fiber optic cable, a preparation method thereof, and an outer sheath material of the rat-proof fiber optic cable. Background technique [0002] With the strengthening of environmental protection in our country, the ecological environment has been greatly improved, and the squirrels in mountainous areas have increasingly damaged optical cables, affecting the normal communication. Rodent-proof optical cable has become a common type of optical cable in communication cables. Generally, there are two kinds of rodent-proof optical cables: one is physical rodent-proof and the other is chemical rodent-proof. [0003] Physical rodent protection usually adopts armor protection. The most effective method is thin round galvanized steel wire armor and nylon sheath protection. Chemical rodent protection usually adds chemical additives to the outer sheath material of the optical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44C08L23/06
CPCC08L23/06C08L2201/02C08L2201/08C08L2201/22C08L2203/202C08L2205/03C08L2207/04C08L2207/068G02B6/443G02B6/4479C08L81/06C08L75/04C08K13/04C08K7/12C08K5/09C08K5/098C08K3/34C08K3/36
Inventor 常国庆潘峰谢裕莫敏晖潘家乐
Owner JIANGSU TRIGIANT TECH
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