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

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...

Examples

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)...

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...

Examples

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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