High temperature resistance multimode special optical fiber for aviation and manufacturing method thereof

A high temperature resistant and aviation technology, applied in the direction of fiber mechanical structure, etc., to achieve the effect of high flame retardant performance, round and stable structure, and good adhesion

Inactive Publication Date: 2014-09-17
NANJING QUANXIN CABLE TECH
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Problems solved by technology

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

Method used

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  • High temperature resistance multimode special optical fiber for aviation and manufacturing method thereof

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preparation example Construction

[0028] Its preparation method includes the following processes:

[0029] 1) The fiber core is multimode, and the structure is divided into 50 / 125μm and 62.5 / 125μm;

[0030] 2) Use coating equipment to coat high temperature-resistant -55℃~+125℃ UV-curable acrylate on the periphery of the fiber core as a coating layer, temperature-resistant -55℃~+125℃, and the outer diameter of the coating layer is 245μm ;

[0031] 3) Single-layer or double-layer extruded ethylene tetrafluoroethylene copolymer materials are used by high-temperature extruders, and wrapped around the coating layer as a tight cladding layer 3, with a temperature resistance of -55°C to +125°C;

[0032] 4) Use a high-speed braiding machine to weave aramid fiber, and wrap it around the outer edge of the tight cladding 3 as the reinforcement layer 4, meeting the tensile strength of 150N;

[0033] 5) Use a high-temperature extruder to extrude ethylene tetrafluoroethylene copolymer, and wrap it around the reinforcement...

example

[0034] Typical example: the outer diameter of the optical cable is 1.8mm, the outer diameter of the tight cladding is 0.9mm, the core structure is 62.5μm / 125μm, and the high temperature resistant multimode optical cable for aviation is 125°C, expressed as GTAE125-62.5 / 125-0.9-1.8 .

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Abstract

The invention provides a high temperature resistance multimode special optical fiber for aviation and a manufacturing process of the optical fiber. The optical fiber structurally comprises a fiber core, an ultraviolet curing acrylic ester coating layer, an ethylene tetrafluoroethylene copolymer tight cladding, an aromatic polyamide fiber reinforcing layer and an ethylene tetrafluoroethylene copolymer restrictive coating. According to the manufacturing process, the fiber core of the optical fiber is a multimode, the coating layer is coated through the special ultraviolet curing acrylic ester, and the temperature of which the coating layer can withstand ranges from -55 DEG C to +125 DEG C. The outer diameter of the coating layer is 245 micron. According to the tight cladding, a high temperature extrusion molding machine is adopted to extrude out the high temperature ethylene tetrafluoroethylene copolymer in a double-layered mode. The reinforcing layer is knitted through the aromatic polyamide fiber having high tension resistance performance. According to the restrictive coating, the high temperature extrusion molding machine is adopted to extrude out the ethylene tetrafluoroethylene copolymer. The optical fiber has the advantages that the high-low temperature of which the coating layer can withstand ranges from -55 DEG C to +125 DEG C, and the optical fiber is high in intensity, resistant to bending, impact and aging, long in service life, resistant to mucedine, high in flame retardant, capable of providing highly reliable services in the severe environment and suitable for high-speed signal transmission under special environmental conditions such as the aerospace or electron or airborne environment.

Description

technical field [0001] The invention is a high-temperature-resistant multi-mode optical cable for aviation and a preparation method thereof. Features such as mold and high flame retardancy can provide high-reliability services in harsh environments, and are 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 cables, there are already many domestic manufacturers, and the technical level is also very mature. However, the application of optical cables in the military field is still in the initial stage of development. The main reason is that military optical cables have high requirements, not only good environmental and mechanical properties, but also special requirements such as high and low temperature resistance, high strength, impact resistance, bending resistance, and long life. Therefore, the materials and manufacturing proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 樊群何丽坚李峰许宪成成绍强陈祥楼赖洪林
Owner NANJING QUANXIN CABLE TECH
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