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Double-core cable for aviation and manufacturing method thereof

A dual-core optical cable, aerospace technology, applied in the direction of light guides, optics, optical components, etc., can solve the problems of optical fiber and outer sheath material performance degradation, optical cables cannot meet the application occasions, and cannot guarantee the operation of optical cables, etc., to achieve high resistance to high Low temperature resistance, excellent creep resistance, and the effect of solving uniformity

Inactive Publication Date: 2017-04-19
SHANDONG PACIF OPTICS FIBER & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • 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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  • Double-core cable for aviation and manufacturing method thereof

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Embodiment 1

[0036] A dual-core optical cable for aerospace, with a structure such as figure 1 As shown, the double-core optical cable includes two side-by-side optical fibers, the outer surface of each optical fiber is coated with a polyimide coating, and a polyethersulfone tight sleeve layer 2 is provided outside the polyimide coating. Two aramid fiber reinforced optical cable reinforcement cores (KFRP) 3 are arranged on both sides of the optical fiber. The outer sheath 4 is arranged on the periphery of the core 3 (KFRP); the polyimide coating is obtained by coating polyimide on the outer surface of the optical fiber, and then curing by ultraviolet rays, the coating speed is 180m / min, and the ultraviolet The wavelength is 380nm.

[0037] The thickness of the polyimide coating is 37 μm. The thickness of the polyethersulfone tight sleeve layer is 0.15mm, the thickness of the outer sheath is 0.45mm, and the material of the outer sheath is thermoplastic polyurethane elastomer (TPU). The r...

Embodiment 2

[0045] A kind of twin-core optical cable for aerospace, as shown in embodiment 1, the difference is:

[0046] The double-core optical cable includes two side-by-side optical fibers, and the outer surface of each optical fiber is coated with polyimide coating. The polyimide coating is coated with polyimide on the outer surface of the optical fiber, and then passed through ultraviolet After curing, the coating speed is 150m / min, and the ultraviolet wavelength is 375nm.

[0047] The thickness of the polyimide coating is 42 μm. The thickness of the polyethersulfone tight sleeve layer is 0.18mm, the thickness of the outer sheath is 0.38mm, and the material of the outer sheath is thermoplastic polyurethane elastomer (TPU).

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Abstract

The invention relates to a double-core cable for aviation. The double-core cable comprises two parallel fibers, wherein an outer surface of each fiber is coated with a polyimide coating layer, the polyimide coating layer is externally provided with a polyethersulfone jacket layer, two sides of the two fibers are provided with two aramid fiber enhancement cable reinforcement cores (KFRP), an outer sheath is arranged at periphery of the two fibers and the two aramid fiber enhancement cable reinforcement cores (KFRP), the polyimide coating layer is formed through coating polyimide at an outer surface of the fiber and curing the coated fiber through utilizing UV, a coating speed is 150-180 m / min, and wavelength of the UV is 365-395nm. The double-core cable is advantaged in that the polyimide coating layer is formed through coating polyimide at an outer surface of the fiber and curing the coated fiber through utilizing UV, the coating speed is fast, a coating outer diameter has good uniformity, creep performance and tensile performance of the cable are excellent, and the cable further has properties of high temperature resistance, hydrolysis resistance, acid and alkali resistance, nontoxicity, flame retardation and fuel oil resistance.

Description

technical field [0001] The invention relates to an ultra-light special communication optical cable, in particular to a double-core 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, and anti-electromagnetic interference compared with traditional copper cables; since the 1990s, optical fiber has great advantages in the aerospace application of optical fiber guidance and optical fiber technology . Different from civilian optical cables, aerospace optical cables require light weight, large working temperature difference, mechanical and optical stability in this temperature range, acid and alkali resistance, resistance to various fuels and oils, flame retardant, radiation resistance and other special features. Require. [0003] However, the traditional aviation optical cable is generally composed of optical fiber, cable core and outer sheath...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/4432G02B6/443G02B6/4436G02B6/4479
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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