Composite section material with grating fibers for cable and preparation method thereof

A technology of grating optical fiber and composite profile, applied in communication cables, cables, circuits, etc., can solve the problems of increasing the cost of cables, failing to achieve monitoring, and being difficult to implement, and achieve the effects of extending service life, reducing weight, and low line loss

Inactive Publication Date: 2011-02-02
ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical fiber is placed between the cable cores or conductors, this technical solution is difficult to implement in practical applications, which greatly increases the cost of the cable
The optical fiber is placed between the insulating layer and the outer protective sheath, and the optical fiber is easily damaged in actual use, thus failing to achieve the purpose of monitoring

Method used

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  • Composite section material with grating fibers for cable and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Take one known commercial continuous grating optical fiber, such as the product of Wuhan University of Technology, one photolithographic grating per 1000m; carry out surface degreasing treatment, and then coat surface coupling agent KH304;

[0040] (2) Take 2 bundles of 12K, T700 carbon fiber bundles, and 2 bundles of ultra-high molecular weight polyethylene fibers, and pack them on 4 creels, and clamp the surface-treated continuous grating optical fiber on the carbon fiber bundle UHMWPE fibers Among the formed fiber bundles, mix and introduce the pultrusion machine with a circular die, and use the pultrusion method to pultrude the fiber material and resin. Take the 118 unsaturated polyester of Longzhu Company as the pultrusion resin, and the volume of the mixed fiber material Accounting for 70% of the total volume of fiber material and resin; according to the pultrusion speed, pultrusion temperature, curing temperature and other conditions recommended by the resin s...

Embodiment 2

[0043] (1) Take one known commercial coded continuous grating optical fiber (such as the product of Wuhan University of Technology), one photolithographic grating per 100m, and mechanically roughen;

[0044] (2) Get 3 bundles of 12K carbon fiber bundles and 1 bundle of basalt fibers, take the continuous grating optical fiber obtained in step (1), and coaxially fit the outer surface of the mixed fiber bundle of continuous carbon fibers and basalt fibers, without twisting, and mix with the mixed fiber bundle together, mix and introduce the pultrusion machine of the circular die, adopt the pultrusion method to pultrude the mixed fiber material and resin, take the epoxy resin of Reichhold company as the pultrusion resin, the volume of the fiber material accounts for the total of the fiber material and the resin 66% of the volume; perform pultrusion according to the pultrusion speed, pultrusion temperature, and curing temperature recommended by the resin supplier, and then perform c...

Embodiment 3

[0048] (1) Take one known commercial coded continuous grating optical fiber (such as the product of Wuhan University of Technology), one photolithographic grating per 100m, and mechanically roughen;

[0049] (2) Take 2 bundles of 12K carbon fiber bundles and 2 bundles of glass fibers, take the continuous grating optical fiber obtained in step (1), and coaxially fit the outer surface of the mixed fiber bundle of continuous carbon fiber and basalt fiber, without twisting, and mix with the mixed fiber bundle together, mix and introduce the pultrusion machine of the circular die, adopt the pultrusion method to pultrude the fiber material and the resin, take the epoxy resin of Reichhold company as the pultrusion resin, the volume of the fiber material accounts for the total volume of the fiber material and the resin According to the pultrusion speed, pultrusion temperature, curing temperature and other conditions recommended by the resin supplier, pultrusion is carried out, and then...

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Abstract

The invention relates to a composite section material with grating fibers for a cable and a preparation method thereof, in particular to the composite section material which can immediately monitor the stress state and the temperature state of a lead wire. The composite section material comprises fiber material and resin; the fiber material is a mixture fiber material of at least one of carbon fiber and glass fiber, and ultrahigh molecular weight polyethylene fiber, basalt fiber or aramid fiber; and along the length direction, the fiber material is internally provided with at least one grating fiber. The composite section material is prepared by pulling and extruding the fiber material and the resin. The cable with the grating fibers can immediately monitor the stress state and the temperature state of the lead wire and immediately monitor the operation state of a transmission modified line, has the advantages of light weight, good fatigue resistance, large intensity, high-temperatureresistance and corrosion resistance, and overcomes the defects of high cost, insufficient toughness and the like, caused by single carbon fiber material.

Description

technical field [0001] The invention relates to a composite profile with grating optical fiber used for cables and a preparation method thereof, in particular to a composite profile capable of real-time monitoring of the force and temperature of a wire and a preparation method thereof. Background technique [0002] Fiber Bragg grating is a passive optical fiber component, which has important applications in the field of communication and sensing, and its working principle is shown in figure 1 . Fiber Bragg grating is a wavelength selective reflection device, and the reflection wavelength λ is related to the grating pitch Λ. In the field of optical fiber sensing, when temperature and stress act on the grating, the pitch Λ of the grating will change, and the change of the grating pitch Λ will cause the reflection wavelength λ to move. By measuring the change of the reflection wavelength λ, the temperature, strain measurement, see attached figure 1 . [0003] The advantages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B11/22
Inventor 张跃峰何振宇何顺伦
Owner ZHEJIANG ZHONG JU COMPOSITE MATERIAL CO LTD
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