Physical adsorption temperature-resistant high-flame-retardant communication optical cable and manufacturing method thereof
A technology of physical adsorption and production method, which is applied in the field of communication optical cables, can solve the problems of high cost, extremely high requirements for fire resistance and flame retardant of optical cables, and inability to meet the requirements of flame retardant performance or tensile performance for the use of optical cables.
Active Publication Date: 2021-09-10
NANJING WASIN FUJIKURA OPTICAL COMM LTD
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Problems solved by technology
[0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. It is a communication cable assembly that uses one or more optical fibers placed in a sheath as a transmission medium and can be used individually or in groups. Metro , railways, large buildings, and central computer rooms have extremely high requirements for fire-resistant and flame-retardant optical cables. Most of the traditional high-flame-retardant optical cables use flame-retardant non-metallic materials for chemical flame-retardant, which requires high raw materials and high costs. Whether it is flame-retardant properties Or the tensile properties cannot meet the requirements of optical cables in special scenarios
Method used
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specific Embodiment
[0036] Firstly, thread the optical fiber ribbon through the central hole of the core in the extruder, inject PBT material through the extruder, and insert the core into the mold sleeve in the extruder to form a circular cavity with a center and three interlayers. The casing structure of the elliptical arc cavity, the powdered activated carbon is broken up by the activated carbon oscillator, combined with the nitrogen filling device, the activated carbon and nitrogen are blown into the cavity of the casing through the back of the mold core, and finally the casing and optical fiber are formed With bonded non-metallic tubular structure and internal cavity with nitrogen and activated carbon.
[0037] Then the structure formed by the extrusion machine and the combination of the sleeve and the optical fiber ribbon enters the cooling water tank for cooling, is blown dry by the blower, and is finally received into the sleeve wire take-up machine through the wire take-up traction device...
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Abstract
The invention relates to the technical field of communication optical cables, in particular to a physical adsorption temperature-resistant high-flame-retardant communication optical cable and a manufacturing method thereof. The physical adsorption temperature-resistant high-flame-retardant communication optical cable comprises a communication unit, activated carbon, a cavity, a sleeve, an aramid fiber reinforcing piece, a mica tape and an LSZH flame-retardant sheath, the LSZH flame-retardant sheath is located on the outermost layer of the optical cable, and the mica tape is located in a central interlayer of the LSZH flame-retardant sheath; the aramid fiber reinforcer is located on the inner side of the LSZH flame-retardant sheath, the sleeve is located on the inner side of the aramid fiber reinforcer, the inner side of the sleeve and the central interlayer are cavities, the activated carbon is located in the cavity of the central interlayer of the sleeve, the communication unit is located in the cavity of the inner side of the sleeve, and the cavities are of a sealed structure and filled with nitrogen and the activated carbon. The activated carbon has strong physical adsorption capacity and can adsorb nitrogen, when the outside is combusted at high temperature, the nitrogen filled in the cavity and the adsorbed nitrogen are released to produce an oxygen-free environment, and a remarkable flame-retardant effect is achieved.
Description
technical field [0001] The invention relates to the technical field of communication optical cables, in particular to a physical adsorption temperature-resistant high flame-retardant communication optical cable and a manufacturing method thereof. Background technique [0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. It is a communication cable assembly that uses one or more optical fibers placed in a sheath as a transmission medium and can be used individually or in groups. Metro , railways, large buildings, and central computer rooms have extremely high requirements for fire-resistant and flame-retardant optical cables. Most of the traditional high-flame-retardant optical cables use flame-retardant non-metallic materials for chemical flame-retardant, which requires high raw materials and high costs. Whether it is flame-retardant properties Or the tensile performance cannot satisfy the use of optical cables in s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): G02B6/44
CPCG02B6/4436G02B6/443G02B6/4432
Inventor 陈珠海张成龙
Owner NANJING WASIN FUJIKURA OPTICAL COMM LTD