High temperature-resistant light optical cable for aeronautics and astronautics and preparation method

An aerospace and high-temperature-resistant technology, applied in the direction of light guides, optics, optical components, etc., can solve problems such as the performance degradation of optical fibers and outer sheath materials, the failure of optical cables to meet the application occasions, and the inability to guarantee the operation of optical cables, etc., to achieve good high and low temperature resistance High performance, light weight, good high and low temperature resistance

Inactive Publication Date: 2017-05-31
SHANDONG PACIF OPTICS FIBER & CABLE CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

When the operating temperature is higher than 70°C or lower than -40°C, the performance of the optical fiber and the outer sheath material in the optical cable will drop sharply, the optical fiber will be easily broken, and the outer sheath will be seriously aged, which cannot guarantee the normal operation of the optical cable, so conventional optical cables cannot meet the requirements. Applications in harsh environments such as aerospace

Method used

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  • High temperature-resistant light optical cable for aeronautics and astronautics and preparation method

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Embodiment 1

[0042] A high temperature resistant optical cable for aerospace, the structure is as follows figure 1 As shown, it includes optical fiber 1, polyimide coating 2, polyethersulfone tight sleeve layer 3, aramid fiber braiding layer 4, polytetrafluoroethylene sheath 5, polyimide coating thickness from inside to outside About 37μm; the thickness of the polyethersulfone tight sleeve layer is 0.20mm, the thickness of the aramid fiber braided layer is 0.3mm, and the thickness of the polytetrafluoroethylene sheath is 0.25mm. The polyimide coating is obtained by coating polyimide on the outer surface of the optical fiber, and then curing by ultraviolet light, the coating speed is 170m / min, and the ultraviolet wavelength is 380nm.

[0043] The preparation method of the above-mentioned high-temperature-resistant light-weight optical cable for aerospace includes the following steps:

[0044] (1) Choose a bending-resistant single-mode fiber, and the fiber structure is 9 / 125μm;

[0045] (2...

Embodiment 2

[0051] A high temperature resistant optical cable for aerospace, the structure is as follows figure 1 As shown, it includes optical fiber 1, polyimide coating 2, polyethersulfone tight sleeve layer 3, aramid fiber braiding layer 4, polytetrafluoroethylene sheath 5, polyimide coating thickness from inside to outside About 40μm; the thickness of the polyethersulfone tight sleeve layer is 0.30mm, the thickness of the aramid fiber braided layer is 0.4mm, and the thickness of the polytetrafluoroethylene sheath is 0.2mm. The polyimide coating is obtained by coating polyimide on the outer surface of the optical fiber, and then curing by ultraviolet light, the coating speed is 160m / min, and the ultraviolet wavelength is 385nm.

[0052] The preparation method of the above-mentioned high-temperature-resistant light-weight optical cable for aerospace includes the following steps:

[0053] (1) Choose a bending-resistant single-mode fiber, and the fiber structure is 9 / 125μm;

[0054] (2)...

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Abstract

The invention relates to a high temperature-resistant optical cable for aeronautics and astronautics. The high temperature-resistant optical cable sequentially comprises an optical fiber, a polyimide coating layer, a polyether sulfone clamping layer, an aramid fiber weaving layer and a polytetrafluoroethylene protective sheath from interior to exterior, wherein the polyimide coating layer is formed by coating the outer surface of the optical fiber with polyimide, and then curing by ultraviolet rays; the coating speed is 150 to 180m / min, and the length of the ultraviolet ray is 365 to 395nm. The high temperature-resistant optical cable has the advantages that the high and low temperature-resistant property is good; the use temperature range is -150 to 300 DEG C, and the optical fiber is also suitable for outer atmosphere spaces; the optical fiber can be used for a long time at the temperature of 180 to 200 DEG C, and the anti-creepage property is good; the roundness is good, the weight is light and is 4 to 5Kg / km, the high temperature-resistant property, aging-resistant property and low shrinkage property are realized, and the flame-retardant property and chemical stability are excellent.

Description

technical field [0001] The invention relates to a light optical cable for communication, in particular to a high temperature resistant light optical cable for aerospace and a preparation method thereof. Background technique [0002] As a transmission medium, optical fiber has the advantages of ultra-lightweight, wide bandwidth, anti-electromagnetic interference, and good confidentiality compared with traditional copper cables; with the development of the aviation industry, in recent years, the application research of optical fiber cables in the field of aerospace widely. Aerospace optical cables are different from ordinary optical fiber cables, fully considering their applicability and safety, requiring light weight, thin wire diameter, high temperature resistance, and mechanical and optical stability in the long-term high temperature range, high strength, and bending resistance , impact resistance, aging resistance, acid and alkali resistance, resistance to various fuels a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/4436G02B6/443G02B6/4432G02B6/4479
Inventor 艾兴余李广省李冠魁郭亚亭周文高宪武
Owner SHANDONG PACIF OPTICS FIBER & CABLE CO LTD
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