High temperature (200 DEG C)-resistant tightly wrapped optical fiber and preparation process thereof

A technology of tightly wrapped 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 high flame retardancy, good adhesion, and stable optical performance

Inactive Publication Date: 2012-05-02
NANJING QUANXIN CABLE TECH
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  • 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 (200 DEG C)-resistant tightly wrapped optical fiber and preparation process thereof
  • High temperature (200 DEG C)-resistant tightly wrapped optical fiber and preparation process thereof
  • High temperature (200 DEG C)-resistant tightly wrapped optical fiber and preparation process thereof

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Embodiment Construction

[0009] Control attached figure 1 The structure is that the periphery of the core 1 is a polyimide coating layer 2; the periphery of the polyimide coating layer 2 is a tight outer layer 4 of cross-linked ethylene tetrafluoroethylene copolymer X-ETFE.

[0010] Its preparation process: the fiber core is divided into single-mode and multi-mode, the single-mode structure is 9 / 125 μm, the multi-mode structure is 50 / 125 μm or 62.5 / 125 μm; the coating layer is coated with polyimide, and the polyimide-coated The temperature resistance grade is -65℃~+200℃, and the outer diameter of the coating layer is 155μm. The coating layer enables the tight-packed optical fiber to be laid and installed normally at -65℃; the tight-packed outer layer 4 is a single layer of high-temperature extruder Thin-wall extrusion cross-linked ethylene tetrafluoroethylene copolymer material X-ETFE, high temperature resistance 200 ℃.

[0011] Control attached figure 2 , its structure is that the periphery of the...

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Abstract

The invention relates to a high temperature (200 DEG C)-resistant tightly wrapped optical fiber and a preparation process thereof. The high temperature (200 DEG C)-resistant tightly wrapped optical fiber is characterized in that a polyimide coating is arranged on the periphery of a fiber core; and a cross-linked ethylene-tetrafluoroethylene copolymer X-ETFE tight wrapping outer layer is arranged on the periphery of the polyimide coating; and the preparation process is as follows: the fiber core of the optical fiber is divided into single mode and multimode, the coating adopts polyimide for coating, the temperature-resistant grade is minus 65 DEG C to plus 200 DEG C, the outer diameter of the coating is 155 mu m, and the coating can enable the tightly wrapped optical fiber to be normally laid and mounted at the temperature of minus 65 DEG C; and the tight wrapping layer adopts a high-temperature plastic extruding machine for single-layer and double-layer thin-wall extrusion of the high-temperature cross-linked ethylene-tetrafluoroethylene copolymer X-ETFE, and the high temperature 200 DEG C can be resisted. The high temperature (200 DEG C)-resistant tightly wrapped optical fiber has the advantages of having the properties of high and low temperature resistance from minus 65 DEG C to plus 200 DEG C, high strength, bending resistance, impact resistance, aging resistance, long service life, corrosion resistance, flame retardance and the like, providing high-reliability services under a harsh environment and being suitable for high-speed signal transmission under aviation, aerospace, electronics, airborne special environmental conditions.

Description

technical field [0001] The invention is a high temperature resistant 200°C tight-packed optical fiber and its preparation process. The product has the characteristics of high and low temperature resistance -65°C ~ +200°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): G02B6/036
Inventor 樊群李峰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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