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Yellowing-resistant flame-retardant transparent material for optical cable sheath and preparation method thereof

A transparent material and anti-yellowing technology, which is applied in the field of anti-yellowing flame-retardant transparent materials for optical cable sheaths and its preparation, can solve the problems of easy cracking, optical cable failure, and moisture resistance, and achieve low odor performance and good flame retardancy Characteristics, the effect of good moisture resistance and temperature resistance

Inactive Publication Date: 2019-11-08
ANHUI CHUZHO DEWEI NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The sheath material for optical fiber cables is also very important for the outer layer material due to the requirements of the use environment. At present, the materials used for optical fibers are mostly low-smoke and halogen-free materials, but they are easy to crack and not resistant to moisture. Failure, so the yellowing resistance of optical fiber materials has put forward higher requirements

Method used

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  • Yellowing-resistant flame-retardant transparent material for optical cable sheath and preparation method thereof
  • Yellowing-resistant flame-retardant transparent material for optical cable sheath and preparation method thereof
  • Yellowing-resistant flame-retardant transparent material for optical cable sheath and preparation method thereof

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preparation example Construction

[0033] Second object of the present invention is to provide a kind of preparation method of anti-yellowing flame retardant transparent material for optical cable sheath, comprising the steps:

[0034] (1) Weigh polyvinyl chloride resin, liquid plasticizer, and flame retardant, add them to a high-speed mixer and mix at high speed until the temperature rises to 80°C to 90°C;

[0035] (2) Add the weighed stabilizer and anti-yellowing agent to the high-speed mixer in step (1) and mix at a high speed until the temperature rises to 115°C;

[0036] (3) Add the weighed low-melting super cold-resistant solid plasticizer into the high-speed mixer in step (2), mix until the temperature rises to 120°C, and put it into a twin-screw extruder to extrude and granulate to obtain the described The cable sheath is made of anti-yellowing and flame-retardant transparent material.

[0037] Wherein, the temperature setting range of the twin-screw extruder is 120°C-165°C, the screw speed is 30-40rpm...

Embodiment 1

[0052]Example 1 added 1.5 parts of calcium-zinc stabilizer and 2.5 parts of anti-yellowing agent, embodiment 2 added 1.0 part of organotin stabilizer and 2.5 parts of anti-yellowing agent, embodiment 3 and embodiment 4 are calcium-zinc stabilizers , organotin stabilizer and anti-yellowing agent three compound system, then as can be seen from the numerical value of double 85, the numerical value of embodiment 1 and 2 is lower than embodiment 3 and 4, it can be seen that the compounding of the three The effect is better than that of non-combined. And the double 85 effect of embodiment 4 is better than embodiment 3, can find out from formula component, the addition of calcium zinc stabilizer, organic tin stabilizer and anti-yellowing agent of embodiment 4 is all higher than embodiment 3, The value of double 85 is better.

[0053] In addition, the yellowing-resistant transparent material used for the sheath of the optical cable of Example 4 and Comparative Example 2 is irradiated...

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Abstract

The invention relates to a yellowing-resistant flame-retardant transparent material for an optical cable sheath, the yellowing-resistant flame-retardant transparent material comprises the following components in parts by weight: 100 parts of polyvinyl chloride resin; 25 to 35 parts of a liquid plasticizer; 3 to 5 parts of a low melting point ultra-cold resistant solid plasticizer; 1.5 to 2.8 partsof a stabilizer; 1.5 to 3.5 parts of an anti-yellowing agent; 15-25 parts of a flame retardant; wherein the stabilizer is one or two of a calcium zinc stabilizer and an organotin stabilizer. The yellowing-resistant flame-retardant transparent material for the optical cable sheath has good humidity resistance and temperature resistance, basically does not change color after aging for 168 hours at85 DEG C and 85% humidity, has good flame retardant properties and reaches VW-1 grade. At the same time, the yellowing-resistant flame-retardant transparent material has excellent low-odor performance. Both low-odor stabilizer and plasticizer are selected. The yellowing-resistant flame-retardant transparent material is a new type of low-odor environmental protection material.

Description

technical field [0001] The invention relates to a yellowing-resistant and flame-retardant transparent material for an optical cable sheath and a preparation method thereof. Background technique [0002] At present, there is a new wave of optical fiber and cable in the world. The competitiveness of my country's optical fiber and cable enterprises is constantly improving, and they are actively expanding overseas markets. Optical cable sheath material is an indispensable material in the process of making optical fiber cables. Due to the existence of optical fibers and nylon in the cable structure, the selection of outer material is very important. [0003] The sheath material for optical fiber cables is also very important for the outer layer material due to the requirements of the use environment. At present, the materials used for optical fibers are mostly low-smoke and halogen-free materials, but they are easy to crack and not resistant to moisture. Failure, so the yellowin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/06C08K5/12C08K5/57
CPCC08K5/12C08K5/57C08L2201/02C08L2201/08C08L2203/202C08L27/06
Inventor 邓之俊陆威袁宝周玉梅张坤吴万昌庄丽娜
Owner ANHUI CHUZHO DEWEI NEW MATERIAL
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