WO2019128472A1

WO2019128472A1 - Symmetrical parallel butterfly fiber optic drop cable

Info

Publication number: WO2019128472A1
Application number: PCT/CN2018/114095
Authority: WO
Inventors: 王胡江; 林卫峰; 高峰; 王宇亮; 蒋北; 刘沛东; 沈晨曦; 胡静红
Original assignee: 江苏亨通光电股份有限公司
Priority date: 2017-12-27
Filing date: 2018-11-28
Publication date: 2019-07-04
Also published as: CN107907954A

Abstract

A symmetrical parallel butterfly fiber optic drop cable, comprising a first optical unit (1) and a second optical unit (2) which is symmetrical with the first optical unit (1), the first optical unit (1) and the second optical unit (2) being the same in structure. Each of the first optical unit (1) and the second optical unit (2) comprises an optical fiber (10). Non-metal strengthening members (20) are provided symmetrically at two sides of the optical fiber (10); the periphery of the optical fiber (10) and the non-metal strengthening members (20) are covered with a sheath layer (30); the sheath layer (30) is provided with two symmetrical V-shaped slots (40). The sheath layer (30) comprises the following materials in parts by weight: 100 parts of matrix resin, 50-70 parts of flame retardant, 3-10 parts of flame retardant synergist, 5-15 parts of solubilizing agent, 0.5-2 parts of coupling agent, 0.5-0.8 part of antioxidant, and 0.5-1 part of coloring agent. The fiber optic cable is high in modulus and strength, light, and environment-friendly, and also has excellent properties such as bending resistance and tensile fatigue resistance.

Description

Symmetric parallel butterfly-shaped cable

Technical field

The invention relates to the field of optical cables, in particular to a symmetric parallel butterfly-introducing optical cable.

Background technique

There are two kinds of traditional butterfly-shaped cable-introduction structures, one with hanging wires and one without hanging wires. The limitations of the traditional butterfly-introducing optical cables in the field of use are gradually reflected. In the next 3-5 years, the access network cable market will face a huge demand market, and the newly developed FTTH symmetric parallel butterfly cable will be used as a product with safety, efficiency and convenience. Boost the implementation of all-optical networks.

Summary of the invention

The technical problem to be solved by the present invention is to provide a symmetric parallel butterfly-introducing optical cable, which has the characteristics of high modulus, high strength, light weight, environmental protection, and the like, and also has excellent resistance to bending and tensile fatigue.

In order to solve the above technical problem, the present invention provides a symmetric parallel butterfly drop cable comprising a first light unit and a second light unit symmetrical with the first light unit, the first light unit and the second light The first light unit and the second light unit each include: an optical fiber, and two sides of the optical fiber are symmetrically provided with a non-metallic reinforcing member, and the optical fiber and the non-metallic reinforcing member are sheathed on the outer circumference. a layer, the sheath layer is provided with two mutually symmetric V-shaped grooves;

The material of the sheath layer comprises, by weight:

Preferably, the matrix resin comprises: EVA, POE, PE, wherein the VA content in the EVA is 28%.

Preferably, the flame retardant is aluminum hydroxide or magnesium hydroxide.

Preferably, the flame retardant synergist is ammonium polyphosphate.

Preferably, the coupling agent is a silane coupling agent.

Preferably, further comprising a wire hanging wire disposed between the first light unit and the second light unit, the sheath layer covering the first light unit, the wire hanging wire, and the second light unit between.

Preferably, the non-metallic reinforcing member comprises: a high-strength yarn, an outer circumference of the high-strength yarn is an adhesive layer, an outer circumference of the adhesive layer is an extruded layer, and the thickness of the extruded layer is smaller than the adhesive The thickness of the layer.

Preferably, the high-strength yarn is disposed at a center position of the non-metallic reinforcing member, and the radius of the cylinder composed of the high-strength yarn is not less than the thickness of the bonding layer.

Technical effects of the present invention:

1. The symmetric parallel butterfly-introducing optical cable of the present invention makes the optical cable more lightweight, reduces the weight and diameter of the optical cable, and can adapt to a complicated construction environment.

2. The symmetric parallel butterfly-introducing cable of the present invention is connected to the network at one end, and the other end is connected to the 4K high-definition video terminal device, which adopts an optical cable, which is simple to lay, saves space and is easy to install, and provides assistance for product promotion and application. It also provides a new solution for the development of access networks.

3. The symmetric parallel butterfly optical cable of the invention saves raw materials and environment friendly compared with the traditional optical cable, meets the requirements of the society for lower carbon and environmental protection, improves the wiring efficiency and the connection rate of the optical cable product, and can bring the user with The performance improvement and cost saving provide a more reliable and economical solution for the communication network, and also lay a cost foundation for the great development of China's FTTx construction.

4. The non-metallic reinforcing member of the invention can improve the tensile strength of the non-metal member, so that the optical cable has excellent resistance to bending and tensile fatigue.

DRAWINGS

1 is a schematic structural view of an optical fiber cable introduced in Embodiment 1 of the present invention;

2 is a schematic structural view of an optical fiber cable according to Embodiment 2 of the present invention;

Figure 3 is a cross-sectional view of the non-metallic reinforcement of the present invention;

The label in the figure shows:

10-fiber, 20-non-metallic reinforcement, 30-sheath, 40-V groove, 50-wire suspension, 1-first light unit, 2-second light unit.

Detailed ways

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments, which are to be understood by those skilled in the art.

Example 1

As shown in FIG. 1, an embodiment of a symmetric parallel butterfly drop cable of the present invention is mainly configured by: a first light unit 1 and a second light unit 2 symmetric with the first light unit 1, the A light unit 1 and a second light unit 2 are identical in structure, and the first light unit 1 and the second light unit 2 each include: an optical fiber 10, and two sides of the optical fiber 10 are symmetrically provided with a non-metallic reinforcing member 20, The outer periphery of the optical fiber 10 and the non-metallic reinforcing member 20 is covered with a sheath layer 30, and the sheath layer 30 is provided with two mutually symmetric V-shaped grooves 40.

As shown in FIG. 2, the non-metallic reinforcing member 20 includes: a high-strength yarn 201, an outer circumference of the high-strength yarn 201 is an adhesive layer 202, and an outer circumference of the adhesive layer 202 is an extruded layer 203. The thickness of the extruded layer 203 is less than the thickness of the bonding layer 202.

The high-strength yarn 201 is disposed at a center position of the non-metallic reinforcing member 20, and the radius of the cylinder composed of the high-strength yarn 201 is not less than the thickness of the bonding layer 202. The arrangement of such a structure can improve the tensile strength of the non-metallic member and satisfy the use of the non-metallic reinforcing member to introduce the optical cable in this embodiment.

In this embodiment, the material of the sheath layer comprises, by weight:

Wherein, in the embodiment, the matrix resin comprises: EVA, POE, PE, wherein the VA content in the EVA is 28%.

The flame retardant is aluminum hydroxide or magnesium hydroxide.

The flame retardant synergist is ammonium polyphosphate.

The coupling agent is a silane coupling agent.

Example 2

A butterfly-shaped drop cable is disclosed in Embodiment 2, the structure of which is mainly: a first light unit 1 and a second light unit 2 symmetrical with the first light unit 1, in the first light unit A wire suspension wire 50 is disposed between the first light unit 1 and the second light unit 2, and the first light unit 1 and the second light unit 2 each include: an optical fiber 10, The non-metallic reinforcing member 20 is symmetrically disposed on the two sides of the optical fiber 10. The optical fiber 10, the non-metallic reinforcing member 20, and the wire hanging wire 50 are coated with a sheath layer 30 on the outer periphery thereof. Two mutually symmetrical V-shaped grooves 40.

In this embodiment, the material of the sheath layer comprises, by weight:

The flame retardant is aluminum hydroxide or magnesium hydroxide.

The flame retardant synergist is ammonium polyphosphate.

The coupling agent is a silane coupling agent.

The above symmetric parallel butterfly-introducing optical cable makes the optical cable more lightweight, reduces the weight and diameter of the optical cable, and can adapt to a complicated construction environment.

The symmetric parallel butterfly-shaped cable is connected to the network at one end, and the other end is connected to the 4K high-definition video terminal device. The optical cable is used, which is simple to lay, saves space and is easy to install, and provides assistance for product promotion and application. The development of the network provides a new solution.

Compared with the traditional optical cable, the above symmetric parallel butterfly optical cable saves raw materials, is environmentally friendly, meets the requirements of the society for lower carbon and environmental protection, improves the wiring efficiency and the connection rate of the optical cable product, and can bring the performance improvement to the user. And the cost savings provide a more reliable and economical solution for the communication network, and also lay a cost foundation for the great development of China's FTTx construction.

The non-metallic reinforcing member of the above optical cable can improve the tensile strength of the non-metallic member, so that the optical cable has excellent resistance to bending and tensile fatigue.

In the above embodiment, the low-smoke halogen-free sheath is used, which has low smoke, no halogen, flame retardant, ultraviolet resistance, wear resistance and the like.

The embodiments described above are merely preferred embodiments for the purpose of fully illustrating the invention, and the scope of the invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are within the scope of the present invention. The scope of the invention is defined by the claims.

Claims

A symmetric parallel butterfly-introducing optical cable, comprising: a first light unit and a second light unit symmetrical with the first light unit, wherein the first light unit and the second light unit are identical in structure, The first light unit and the second light unit each include: an optical fiber, the two sides of the optical fiber are symmetrically provided with a non-metallic reinforcing member, and the outer surface of the optical fiber and the non-metallic reinforcing member are coated with a sheath layer, and the sheath Two symmetrical V-shaped grooves are provided on the layer;

The material of the sheath layer comprises, by weight:
A symmetric parallel butterfly drop cable according to claim 1, wherein said matrix resin comprises: EVA, POE, PE, wherein the VA content in the EVA is 28%.
A symmetric parallel butterfly drop cable according to claim 1 wherein said flame retardant is aluminum hydroxide or magnesium hydroxide.
A symmetric parallel butterfly drop cable according to claim 1 wherein said flame retardant synergist is ammonium polyphosphate.
A symmetric parallel butterfly drop cable according to claim 1 wherein said coupling agent is a silane coupling agent.
A symmetric parallel butterfly drop cable according to claim 1, further comprising a wire suspension wire disposed between said first light unit and said second light unit, said sheath layer Covered between the first light unit, the wire suspension wire, and the second light unit.
A symmetric parallel butterfly drop cable according to claim 1, wherein said non-metallic reinforcing member comprises: a high-strength yarn, said outer circumference of said high-strength yarn being a bonding layer, said bonding layer The outer periphery is an extruded layer having a thickness less than the thickness of the bonding layer.
A symmetric parallel butterfly drop cable according to claim 7, wherein said high-strength yarn is disposed at a center position of said non-metallic reinforcing member, and said cylinder of said high-strength yarn has a radius of not less than The thickness of the bonding layer.