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Low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable with non-metal reinforcers

A non-metallic strength member and a technology for introducing optical cables, which are applied in the field of optical cables, can solve problems such as the reduction of mechanical properties of sheath materials, and achieve the effect of improving compatibility

Active Publication Date: 2020-12-04
SICHUAN TIANYI COMHEART TELECOM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problem that the addition of high content of magnesium hydroxide in the preparation of the sheath leads to the decrease of the mechanical properties of the sheath material, the present invention provides a low-smoke, halogen-free self-supporting butterfly drop cable with non-metallic reinforcement, the sheath Low flame retardant is added to the sleeve, which has good flame retardant effect while ensuring mechanical properties

Method used

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  • Low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable with non-metal reinforcers
  • Low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable with non-metal reinforcers
  • Low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable with non-metal reinforcers

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Experimental program
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Effect test

Embodiment 5

[0029] Examples 5-6, in order to further explore the influence of the particle size of the zeolite powder on the performance of the sheath, when preparing the sheath material, add zeolite powder with different particle sizes, the particle size of the zeolite powder added in Example 5 is 200 mesh , the particle diameter of the zeolite powder added in embodiment 6 is 120 meshes, other raw materials are the same as in embodiment 4, the raw materials of specific embodiments 5-6 are as shown in table 3, and the preparation method of sheath material is exactly the same as embodiment 4 .

[0030] The raw material list of table 3 embodiment 5-6

[0031] raw material Example 4 Example 5 Example 6 LDPE 90 90 90 EVA 60 60 60 magnesium hydroxide 40 40 40 Zeolite powder 10 (325 mesh) 10 (200 mesh) 10 (120 mesh) Dioctyl Thiodipropionate 0.1 0.1 0.1 Titanate coupling agent (NDZ-105) 0.5 0.5 0.5 DNP (antioxidant) 0.1 0....

Embodiment 7

[0036] Examples 7-12, in order to further explore the influence of the preparation process of the sheath material on the performance of the sheath, when banburying, the pressure of Example 7 is set to normal pressure, and the pressure of Example 8 is 2 atmospheres, and the implementation The pressure of example 9 is 2.5 atmospheres, the pressure of embodiment 10 is 3.2 atmospheres, the pressure of embodiment 11 is 3.5 atmospheres, the pressure of embodiment 12 is 3.8 atmospheres, other reaction conditions and each raw material consumption and embodiment 4 The same, and the obtained sheath was subjected to a performance test. The sheaths obtained in Examples 7-9 and Example 12 did not meet the performance standards, and the sheath materials obtained in Examples 10-11 met the performance standards, as shown in Table 5.

[0037] Table 5 embodiment 4,10,11 sheath material performance test result

[0038]

[0039]

[0040] It can be seen from Table 5 that the overall performa...

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Abstract

The invention discloses a low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable with non-metal reinforcers. The low-smoke halogen-free self-supporting butterfly-shaped leading-in optical cable comprises an optical fiber ribbon, reinforcers, astrengthening component and a sheath, wherein the two reinforcers are symmetrically arranged, the optical fiber ribbon is arrangedbetween the two reinforcers, the strengthening component is arranged beside one reinforcer, and the optical fiber ribbon, the reinforcers and the strengthening component are fixed by means of the sheath; and a sheath material of the sheath is prepared from the following raw materials in parts by weight: 130-150 parts of a polyolefin base material, 35-51 parts of a composite flame retardant and 0.05-0.1 part of an antioxidant. The sheath provided by the invention also has an excellent flame-retardant effect and excellent mechanical properties when the low flame retardant is added.

Description

technical field [0001] The invention belongs to the field of optical cables, and in particular relates to a low-smoke, halogen-free self-supporting butterfly lead-in optical cable with a non-metallic reinforcement. Background technique [0002] Optical cables are manufactured to meet optical, mechanical or environmental performance specifications. The basic structure of optical cables generally includes a cable core and a sheath. Fiber optic cable. The sheath of an optical cable generally contains a flame retardant, and magnesium hydroxide is a commonly used inorganic flame retardant. The principle of flame retardant is that as the temperature rises, magnesium hydroxide will decompose and absorb a large amount of heat to reduce the temperature of the system. Further prevent the degradation of the polymer. In addition, the generated magnesium oxide can act as a protective layer to block air and flammable gases, and protect the underlying polymer. At the same time, the water ...

Claims

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Application Information

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IPC IPC(8): G02B6/44C08L23/06C08L23/08C08K13/02C08K3/22C08K3/34C08K5/10C08K5/372C08K5/18
CPCG02B6/4403G02B6/443G02B6/4433G02B6/4436C08L23/06C08L2203/202C08L2207/062C08L2205/02C08K2003/2224C08L2201/02C08L2201/22C08L23/0853C08K13/02C08K3/22C08K3/34C08K5/10C08K5/372C08K5/18
Inventor 黄成廖静高小燕范建川
Owner SICHUAN TIANYI COMHEART TELECOM
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