Enhanced layer-stranded optical cable and preparation process thereof

A preparation process, layer twisting technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of affecting the life and performance of optical fibers, and the thermal expansion coefficient is very different, so as to enhance mechanical properties, improve smoothness, and enhance resistance. stretching effect

Inactive Publication Date: 2020-10-30
四川天府江东科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the production process of the stranded optical cable, a large number of polymer material fibers are used for protection, but because the thermal expansion coefficients of the polymer material and the glass material in the fiber are very different, the polymer material will expand during production, installation and use. and shrink much larger than the fiber
And over time, polymer materials, such as PBT, PP and PE, will shrink back, and these shrinkage deformations will cause the optical fibers in the cable to be stressed, thereby affecting the life and performance of the optical fiber

Method used

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  • Enhanced layer-stranded optical cable and preparation process thereof

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preparation example Construction

[0064] A preparation process for an enhanced layer-stranded optical cable, including the process for preparing the described enhanced layer-stranded optical cable is as follows:

[0065] Prepare outer sheath 1 and prepare loose tube 3;

[0066] Wherein, the percentage by weight of the polyethylene composite material for preparing the outer sheath 1 is as follows: 75-85% polyethylene, 15-25% glass fiber, and 0.1-5% additive;

[0067] Wherein, the percentage by weight of the polybutylene terephthalate composite material for preparing the loose tube 3 is as follows: polybutylene terephthalate material 70-80%, glass fiber 20-30%, additive 0.1 -5%.

Embodiment 1

[0068] Embodiment 1, the weight percent of the polybutylene terephthalate composite material that prepares described loose tube 3 is as follows:

[0069] Polybutylene terephthalate 78%;

[0070] 20% glass fiber, the specification of glass fiber is TCR736;

[0071] Silicone resin 2%, the specification of silicone resin is 100A;

[0072] Antioxidant 0.5%, the trade mark that antioxidant adopts is 1010.

Embodiment 2

[0073] Embodiment 2, the weight percent of the polybutylene terephthalate composite material that prepares described loose tube 3 is as follows:

[0074] Polybutylene terephthalate 83%;

[0075] 15% glass fiber, the specification of glass fiber is TCR736;

[0076] Silicone resin 1.5%, the specification of silicone resin is 100A;

[0077] Antioxidant 0.5%, the trade mark that antioxidant adopts is trade mark 168.

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Abstract

The invention discloses an enhanced layer-stranded optical cable and a preparation process thereof, and relates to the field of layer-stranded optical cables. The enhanced layer-stranded optical cablecomprises an outer sheath (1) wrapping a plurality of loose tubes (3), optical fibers (4) are arranged in the loose tubes (3), a reinforcer (5) is arranged in the center of the optical cable, and theloose tubes (3) are arranged around the reinforcer (5). The polyethylene composite material for preparing the outer sheath (1) comprises the following components in percentage by weight: 75-85% of polyethylene, 15-25% of glass fibers and 0.1-5% of an additive. The polybutylene terephthalate composite material for preparing the loose tubes (3) is prepared from the following components in percentage by weight: 70-80% of a polybutylene terephthalate material, 20-30% of glass fibers and 0.1-5% of an additive. According to the invention, shrinkage of the high-molecular material is reduced, influence of stress on the optical fibers caused by shrinkage of the high-molecular material is reduced, the influence on the service life and performance of the optical fibers is reduced, and stretch resistance and impact resistance of the optical cable are enhanced.

Description

technical field [0001] The invention relates to a layer-stranded optical cable, in particular to an enhanced layer-stranded optical cable and a preparation process thereof. Background technique [0002] At present, layer-stranded optical cables are widely used in the construction of outdoor communication networks. Stranded optical cables are usually composed of subunits, strength members, fillers and wrapping components. The structure of the subunits can be single-core or multi-core structure. The strength members can be metal or non-metal strength members. The main purpose is to increase the tensile strength of the optical cable, and at the same time, FRP is a non-metallic structure, which is not affected by electromagnetic interference. The filling structure is to increase the roundness of the cable and also increase its tensile strength (structures with metal are generally not recommended). The use of wrapping is mainly to ensure the stability of the cable structure and...

Claims

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Application Information

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IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4432G02B6/4479G02B6/4486
Inventor 唐海燕朱卫华魏成东陈雪康
Owner 四川天府江东科技有限公司
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