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High-temperature 260 DEG C resistant tightly-packaged fiber and preparation process thereof

A technology of tight-packed optical fiber and high temperature resistance, which is applied in the direction of clad optical fiber, multi-layer core/clad optical fiber, etc., to achieve the effects of improving heat resistance, environmental resistance, and tensile strength

Inactive Publication Date: 2012-06-27
NANJING QUANXIN CABLE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the application of optical fiber in the military field is still in the initial stage of development

Method used

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  • High-temperature 260 DEG C resistant tightly-packaged fiber and preparation process thereof
  • High-temperature 260 DEG C resistant tightly-packaged fiber and preparation process thereof
  • High-temperature 260 DEG C resistant tightly-packaged fiber and preparation process thereof

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Experimental program
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Embodiment Construction

[0009] Control attached figure 1 , its structure is that the periphery of the fiber core 1 is a polyimide coating layer 2 coated with coating equipment; Tight outer layer 4 of polytetrafluoroethylene material (PFA).

[0010] Its preparation process, optical fiber core is divided into single-mode and multi-mode, typical specifications are: single-mode structure 9 / 125μm, multi-mode structure 50 / 125μm or 62.5 / 125μm; coating layer is coated with polyimide by coating equipment , the temperature resistance grade of polyimide is -65℃~+260℃, and the outer diameter of the coating layer is 155μm. The coating layer enables the normal laying and installation of tight-packed optical fibers at -65℃; The soluble polytetrafluoroethylene material (PFA) extruded by machine single-layer thin-wall, and the outer layer of the tight wrap can withstand high temperature of 260°C.

[0011] Control attached figure 2 , the structure is that the periphery of the fiber core 1 is coated with polyimide ...

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Abstract

The invention discloses a high-temperature 260 DEG C resistant tightly-packaged fiber and a preparation process thereof. The high-temperature 260 DEG C resistant tightly-packaged fiber is characterized in that a coating layer is arranged on the periphery of a fiber core, and a tightly-wrapping layer is arranged on the periphery of the coating layer. According to the preparation process, a fiber core comprises a single-mode fiber core and a multi-mode fiber core, wherein the single-mode structure has a thickness of 9 / 125mu m and the multi-mode structure has a thickness of 50 / 125mu m or 62.5 / 125mu m; polyimide is coated on the coating layer by using a coating device, a tightly-wrapping fiber is normally laid and installed at a temperature of -65 DEG C by the coating layer, wherein the polyimide resists the temperature grade of -65 DEG C- +260 DEG C, the outer diameter of the coating layer is 155mu m; and soluble polytetrafluoroethylene (FPA) thin-wall-extruded by adopting a high-temperature extruding machine in the tightly-wrapping layer, and the tightly-wrapping layer resists a high temperature of 260 DEG C. The high-temperature 260 DEG C resistant tightly-packaged fiber has the characteristics of high temperature 260 DEG C and low temperature -65 DEG C resistance, high strength, bending resistance, impact resistance, ageing resistance, long service life, corrosion resistance, inflaming retarding and the like, and is suitable for high-speed signal transmission under aerospace, electrons and onboard special environment conditions.

Description

technical field [0001] The invention is a high-temperature-resistant 260°C tight-packed optical fiber and its preparation process. The product has the characteristics of high and low temperature resistance -65°C ~ +260°C, high strength, bending resistance, impact resistance, aging resistance, long life, corrosion resistance, flame retardancy, etc. , can provide high-reliability services in harsh environments, and is suitable for high-speed signal transmission in aerospace, electronics, and airborne special environmental conditions. Background technique [0002] At present, in the field of common civilian optical fibers, there are already many domestic manufacturers, and the technical level is also very mature. However, the application of optical fiber in the military field is still in the initial stage of development. The main reason is that military optical fibers have high requirements, not only good environmental and mechanical properties, but also special requirements s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/036C03C25/50C03C25/18
Inventor 李峰樊群肖缪霞许宪成郑木广陈祥楼王崇国赖洪林
Owner NANJING QUANXIN CABLE TECH
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