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Method for preparing halogen-free smoke-suppressant and flame-retardant plastic optical fiber sheath

A plastic optical fiber and flame-retardant technology, which is applied in the field of preparation of plastic optical fiber sheaths, can solve the problems of plastic optical fiber products such as flammability and potential safety hazards, achieve the effects of reduced mechanical properties, meet product requirements, and improve affinity

Active Publication Date: 2011-01-19
江西大圣塑料光纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a method for preparing a halogen-free, smoke-suppressing, and flame-retardant plastic optical fiber sheath, which solves the problems of flammability and potential safety hazards in existing plastic optical fiber products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 100 kg of xylene, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1 kg of sodium lauryl sulfate into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 70°C, and keep warm for 70 minutes Stop stirring and heating, filter the reaction materials, dry and ball mill to obtain the magnesium hydroxide powder modified by the first step. Add 100 kg of xylene, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 0.6 kg of aminopropyltrimethoxysilane into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 85°C , heat preservation reaction for 50 minutes; stop stirring and heating, filter, dry and ball mill the reaction materials to obtain magnesium hydroxide powder modified in the second step.

[0019] Add 60 kilograms of polyethylene in internal mixer, 0.9 kilograms of flame retardant accelerator aluminum hydroxide, 0.48 kilograms of flame retardant synergist ammonium polyphos...

Embodiment 2

[0021] Add 350 kg of low-viscosity methyl silicone oil, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1.2 kg of polyoxyethylene sorbitan monooleate 85 (Tween85) into a 500-liter carbon steel kettle, start stirring, Stir evenly; raise the temperature to 75° C., and keep it warm for 50 minutes; stop stirring and heating, filter, dry and ball-mill the reaction materials to obtain magnesium hydroxide powder modified by the first step. Add 350 kg of low-viscosity methyl silicone oil, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 0.8 kg of ureapropyltriethoxysilane into a 500-liter carbon steel kettle, start stirring, and stir well ; Heating up to 8, ℃, heat preservation reaction for 50 minutes; stop stirring and heating, filter, dry and ball mill the reaction materials to obtain magnesium hydroxide powder modified in the second step.

[0022] Add 60 kg of polyethylene, 1.2 kg of antimony oxide, 0.75 kg of red phosphorus, ...

Embodiment 3

[0024] Add 150 kg of liquid paraffin, 20 kg of commercially available magnesium hydroxide flame retardant powder and 1 kg of sodium dodecylbenzenesulfonate into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 45°C, and keep warm for reaction 100 minutes; stop stirring and heating, filter the reaction materials, dry, and ball mill to obtain the magnesium hydroxide powder modified by the first step. Add 150 kg of liquid paraffin, 20 kg of one-step modified magnesium hydroxide flame retardant powder and 1 kg of stearic acid into a 500-liter carbon steel kettle, start stirring, and stir well; heat up to 75 ° C, keep warm for 70 Minutes; stop stirring and heating, filter the reaction materials, dry, and ball mill to obtain magnesium hydroxide powder modified in the second step.

[0025] Add 60 kg of polyethylene, 1.5 kg of molybdenum trioxide, 1 kg of ammonium pyrophosphate, and 15 kg of the above-mentioned two-step modified magnesium hydroxide flame reta...

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PUM

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Abstract

The invention discloses a method for preparing a halogen-free smoke-suppressant and flame-retardant plastic optical fiber sheath, which is characterized by comprising the following steps of: (1) modifying magnesium hydroxide; and (2) preparing a flame-retardant plastic optical fiber. The method has the advantages that: by modifying a magnesium hydroxide flame retardant by two steps, the affinity of the magnesium hydroxide flame retardant with a polyethylene matrix is greatly improved, a flame-retardant accelerant and a synergist are added, the reduction of the mechanical properties of the prepared flame-retardant plastic optical fiber sheath is a little under the condition of ensuring the flame retardance, and the mechanical demand of the product can be met.

Description

technical field [0001] The invention relates to a preparation method of a plastic optical fiber sheath, in particular to a preparation method of a halogen-free, smoke-suppressing and flame-retardant plastic optical fiber sheath. Background technique [0002] Plastic optical fiber is a new type of optical fiber with plastic as the light-guiding medium. It is considered to be the best choice to solve the problem of "the last 100 meters" of optical fiber connection during fiber-to-the-home. Fiber-to-the-home is the basis of "three-network integration", and "three-network integration" is an important direction for the current national industrial policy to vigorously develop. The development goals and strategic planning of the industry have been clarified in the documents issued by the State Council and several ministries and commissions. elaboration. [0003] Plastic optical fiber has low cost, high bandwidth (compared with copper CAT5), large core diameter, good flexibility, e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02
Inventor 陈明
Owner 江西大圣塑料光纤有限公司
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