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Communication optical cable sheath pipe

A technology for optical fiber cables and sheathing tubes, which can be used in electrical components and other directions to solve problems such as poor mechanical properties, poor flame retardancy, and easy deformation at high temperatures.

Inactive Publication Date: 2018-06-12
管莉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are various requirements for the indicators of communication optical fiber cables, such as insulation, tensile strength, operating temperature, flame retardant performance and other indicators. Continuously improving the performance of sheath materials is an urgent need for economic and social development. Traditional sheath materials often have problems such as poor flame retardancy, poor chemical stability, high temperature deformation, poor mechanical properties, and short service life, which bring a lot of inconvenience to actual use and even threaten the safety of people's lives and property

Method used

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  • Communication optical cable sheath pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A communication optical fiber cable sheath tube, which includes a four-layer structure from the inside to the outside, which are respectively a water-blocking layer, a heat-insulating layer, a shielding layer, and a protective layer; the water-blocking layer is extruded with a heat-insulating layer, so The shielding layer is extruded outside the heat insulation layer, and the protective layer is extruded outside the shielding layer; the thickness of the water blocking belt layer is 0.3-0.5mm, the thickness of the heat insulation layer is 0.2-0.3mm, and the thickness of the shielding layer is 0.05 mm. -0.1mm, the thickness of the protective layer is 2mm;

[0017] The heat insulation layer is a double-layer synthetic mica tape; the shielding layer is aluminum foil; the protective layer is a modified polyethylene composite material layer, which is prepared from the following raw materials in parts by weight:

[0018] 100 parts of high-density polyethylene, 50 parts of low-...

Embodiment 2

[0022] A communication optical fiber cable sheath tube, which includes a four-layer structure from the inside to the outside, which are respectively a water-blocking layer, a heat-insulating layer, a shielding layer, and a protective layer; the water-blocking layer is extruded with a heat-insulating layer, so The shielding layer is extruded outside the heat insulation layer, and the protective layer is extruded outside the shielding layer; the thickness of the water blocking belt layer is 0.3-0.5mm, the thickness of the heat insulation layer is 0.2-0.3mm, and the thickness of the shielding layer is 0.05 mm. -0.1mm, the thickness of the protective layer is 2mm;

[0023] The heat insulation layer is a double-layer synthetic mica tape; the shielding layer is aluminum foil; the protective layer is a modified polyethylene composite material layer, which is prepared from the following raw materials in parts by weight:

[0024] 150 parts of high-density polyethylene, 90 parts of low-...

Embodiment 3

[0028] Carry out performance detection test to the sheath pipe protective layer of embodiment 1-2, each performance numerical value is as table 1:

[0029] Table 1

[0030]

[0031] Salt resistance test: soak the test material in Example 1 in 10% sodium chloride solution for 30 days, the tensile strength decreased by 0.7%, the elongation at break decreased by 0.3%, and other properties and characterizations had no obvious changes.

[0032] Alkali resistance test: the test material of Example 1 was soaked in 10% sodium hydroxide solution for 30 days, the tensile strength decreased by 0.8%, the elongation at break decreased by 0.2%, and other properties and characterizations had no obvious changes.

[0033] Heat resistance performance: when the test material of Example 1 was placed in steam at 160°C for 48 hours, the tensile strength decreased by 2.3%, the elongation at break decreased by 1.9%, and the resistivity decreased by 3.7%. There was no significant change in other pr...

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Abstract

The invention belongs to the field of wires and cables and discloses a communication optical cable sheath pipe. The communication optical cable sheath pipe has a four-layer structure, including a water-blocking tape layer, a thermal insulating layer, a shielding layer and a protecting layer from inner to outer, wherein the thermal insulating layer is extruded to wrap the exterior of the water-blocking tape layer; the shielding layer is extruded to wrap the exterior of the thermal insulating layer; and the protecting layer is extruded to wrap the exterior of the shielding layer. The communication optical cable sheath pipe disclosed by the invention is capable of resisting against acid, alkali and salt corrosion and has excellent mechanical property, flame-retardant insulating property and high temperature resistance.

Description

technical field [0001] The invention relates to a communication optical fiber cable sheath tube, which belongs to the field of electric wires and cables. Background technique [0002] The communication optical fiber cable consists of a plurality of mutually insulated wires or conductors to form a cable core, and a communication line with a sealed sheath on the outside. Some are also equipped with an outer sheath outside the sheath. There are various laying methods such as overhead, direct burial, pipeline and underwater. According to the structure, it is divided into symmetrical, coaxial and integrated cables; according to its function, it is divided into field and permanent cables (underground and submarine cables). The communication optical fiber cable has a wide transmission frequency band, a large communication capacity, and is less affected by external interference, but it is not easy to repair. Can transmit telephone, telegram, data and image etc. There are various...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L69/00C08L23/08C08K13/02C08K3/22C08K5/11C08K3/04C08K3/30C08K5/40H02G3/04
CPCC08L23/06C08L2201/02C08L2201/08C08L2203/202C08L2205/02C08L2205/025C08L2205/035C08L2207/062C08L2207/066H02G3/0412C08L69/00C08L23/0853C08K13/02C08K2003/2224C08K5/11C08K3/04C08K2003/3009C08K5/40
Inventor 魏洪昌管莉吴学进刘继婷刘冬陈鹏相京霞张永超陈暴默王英山
Owner 管莉
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