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Self-repairing optical cable reinforced core containing microcapsules and preparation method

A self-healing and microcapsule technology, applied in the field of materials, can solve problems such as appearance deformation, achieve good reinforcement and toughness, and improve the effect of non-self-healing

Inactive Publication Date: 2017-06-27
HAIAN INST OF HIGH TECH RES NANJING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Traditional aramid fibers cannot recover by themselves without the assistance of external conditions, so when microcracks appear on the surface of aramid fibers, they will slowly accumulate on the surface of the aramid fibers and eventually lead to deformation of the appearance

Method used

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preparation example Construction

[0029] This embodiment also discloses a self-repairing optical cable reinforcement core containing microcapsules and a preparation method thereof, including the following steps:

[0030] (1) Preparation of self-healing microcapsules: urea was dissolved in 2.5% ethylene maleic anhydride (EMA) solution under stirring environment, and after the urea was completely dissolved, appropriate amount of ammonium chloride and resorcinol were added. Use hydrochloric acid and sodium hydroxide to adjust the pH of the reaction system to 4-5, then add dicyclopentadiene, and after the emulsion is stabilized, finally add 37% formaldehyde solution, (urea and 37% formaldehyde solution are based on the amount of the substance) The ratio is 0.5-0.6:1). The system was heated to 55°C for 4 hours. Cool to room temperature, filter and wash, air-dry and sieve for later use.

[0031] (2) Preparation of the blend:

[0032] 5-15 servings of micro-crack self-repairing capsules;

[0033] Catalyst 2 to 4 ...

Embodiment 1

[0045] Dissolve 5 g of urea in 200 ml of 2.5% ethylene maleic anhydride (EMA) solution under stirring environment. After all the urea is dissolved, add 0.5 g of ammonium chloride and resorcinol respectively. Use hydrochloric acid and sodium hydroxide to adjust the pH of the reaction system to 4-5, then add 60ml of dicyclopentadiene, and after the emulsion is formed stably, finally add 13g of 37% formaldehyde solution. The system was heated to 55°C at 1°C / min and reacted for 4h. Cool to room temperature, filter and wash, and air dry naturally.

[0046] 82 parts of liquid unsaturated polyester; 15 parts of self-healing microcapsules and 3 parts of catalyst were mixed evenly for 30 minutes. Under pultrusion conditions, it passes through a die at 180°C and a heating zone at 280°C at a speed of 0.01m / s.

Embodiment 2

[0048] Dissolve 5 g of urea in 200 ml of 2.5% ethylene maleic anhydride (EMA) solution under stirring, and add 0.5 g of ammonium chloride and resorcinol respectively after the urea is completely dissolved. Use hydrochloric acid and sodium hydroxide to adjust the pH of the reaction system to 4-5, then add 60ml of dicyclopentadiene, and after the emulsion is formed stably, finally add 13g of 37% formaldehyde solution. The system was heated to 55°C at 1°C / min and reacted for 4h. Cool to room temperature, filter and wash, and air dry naturally.

[0049] 88 parts of liquid unsaturated polyester; 10 parts of self-healing microcapsules and 2 parts of catalyst were mixed evenly for 30 minutes. Under pultrusion conditions, it passes through a die at 180°C and a heating zone at 280°C at a speed of 0.01m / s.

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Abstract

The application discloses a self-repairing optical cable reinforced core containing microcapsules and a preparation method. The self-repairing reinforced chip is formed by mixing microcapsules, catalysts and an unsaturated polyester and covers an aramid fiber surface through a pultrusion process. The material of the reinforced core is aramid fibers, and the mass ratio of the microcapsules to the unsaturated polyester in the mixture is 5% to 15%; and shell capsule walls of the microcapsules are urea resins,inner capsule cores are dicyclopentadiene, and the mass ratios of the capsule cores to the capsule walls are 5:1. When the surface of the aramid fiber reinforced core cracks, the microcapsules are broken, dicyclopentadiene rapidly permeates crazing, and meets the Grubbs catalysts to produce cross-linking, thereby achieving the purpose of repairing. Thus the service life of an optical cable core is prolonged, and the self-repairing optical cable reinforced core is suitable for novel industrial production.

Description

technical field [0001] The application belongs to the technical field of materials, and in particular relates to a self-repairing optical cable reinforcement core containing microcapsules and a preparation method thereof. Background technique [0002] Because optical cables are relatively easy to be damaged by human beings in actual transportation and operation, this affects the normal use of optical cables to a certain extent, and even causes unnecessary energy waste and loss. Therefore, the technology requires us to use some fillers to line the inner layer of the optical cable cortex to achieve the effect of strengthening and toughening. The aramid fiber composite material currently used in the market is used as a filler to alleviate this problem, but when the optical cable is subjected to greater deformation and twisting, the damage to the optical cable itself is permanent and irreparable. So we need a new self-healing fiber optic cable reinforcement core to solve the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
CPCG02B6/443G02B6/4479G02B6/564
Inventor 任华曹婷婷张鹏飞张亚仇叶云
Owner HAIAN INST OF HIGH TECH RES NANJING UNIV
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