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High-conductivity environment-friendly aramid fiber and preparation method thereof

A technology of aramid fiber and high conductivity, which is applied in the field of conductive polymer composite materials, can solve the problems of easily damaged aramid fiber and the decrease of fiber strength, and achieve the effect of high firmness, strong conductivity and good conductivity

Pending Publication Date: 2021-06-04
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method is very easy to damage the aramid fiber during the coarsening process of the aramid fiber, resulting in problems such as a decrease in fiber strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A highly conductive and environmentally friendly aramid fiber, comprising an aramid fiber body, an adhesive layer arranged on the surface of the aramid fiber body for enhancing the stability of the conductive aramid fiber in a water environment, used for bonding with the adhesive layer Cooperate with the adsorption layer for the adsorption of silver ions, and the silver plating layer. The adhesion layer is a polydopamine modified layer, and the adsorption layer is a silane coupling agent modified layer.

[0025] The aramid fiber body is meta-aramid fiber or para-aramid fiber.

[0026] The preparation method of above-mentioned highly conductive, environment-friendly aramid fiber, comprises the following steps:

[0027] (1) Clean the aramid fiber body, remove surface impurities and dry;

[0028] (2) Using 1g / L dopamine aqueous solution, modifying the aramid fiber body at a reaction temperature of 15°C for 4 hours, washing with deionized water for 3 times and then drying...

Embodiment 2

[0039] The same part of this embodiment and embodiment 1 will not be repeated, and the difference is that the preparation method of the above-mentioned highly conductive and environmentally friendly aramid fiber comprises the following steps:

[0040] (1) Clean the aramid fiber body, remove surface impurities and dry;

[0041] (2) Using a 5g / L dopamine aqueous solution, modifying the aramid fiber body at a reaction temperature of 20°C for 20 hours to obtain polydopamine-modified aramid fibers;

[0042] (3) Using a silane coupling agent aqueous solution, modify the polydopamine-modified aramid fiber at a reaction temperature of 50°C for 8 hours, wash it with deionized water for 3 times, and then dry it to obtain a polydopamine / silane coupling Aramid fiber modified by coupling agent;

[0043] (4) Place the modified aramid fibers in the prepared silver-ammonia solution, activate it for 50 minutes, add the reducing solution prepared in advance dropwise, react for 10 hours, wash w...

Embodiment 3

[0049] The same part of this embodiment and embodiment 2 will not be repeated, and the difference is that: the preparation method of the above-mentioned highly conductive and environmentally friendly aramid fiber comprises the following steps:

[0050] (1) Clean the aramid fiber body, remove surface impurities and dry;

[0051] (2) Using 8g / L dopamine aqueous solution, modifying the aramid fiber body at a reaction temperature of 35°C for 48 hours to obtain polydopamine-modified aramid fiber;

[0052] (3) Use an aqueous solution of silane coupling agent to modify the polydopamine-modified aramid fiber at a reaction temperature of 80°C for 10 hours, wash it with deionized water for 3 times, and then dry it to obtain a polydopamine / silane coupling Aramid fiber modified by coupling agent;

[0053] (4) Place the modified aramid fiber in the prepared silver ammonia solution, after activating for 60 minutes, add the reducing solution prepared in advance dropwise, react for 24 hours, w...

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PUM

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Abstract

The invention relates to the technical field of conductive polymer composite materials, in particular to a high-conductivity and environment-friendly aramid fiber and a preparation method thereof. The high-conductivity and environment-friendly aramid fiber comprises an aramid fiber body, an adhesion layer which is arranged on the surface of the aramid fiber body and used for enhancing the stability of the conductive aramid fiber in a water environment, an adsorption layer for adsorbing silver ions in cooperation with the adhesion layer, and a silver plating layer. According to the method, aramid fibers are not damaged, no harm is caused to the environment, the prepared finished product is high in conductivity, and the silver layer is relatively high in firmness.

Description

technical field [0001] The invention relates to the technical field of conductive polymer composite materials, in particular to a highly conductive and environmentally friendly aramid fiber and a preparation method thereof. Background technique [0002] Conductive materials are widely used in electrostatic protection and electromagnetic shielding. Traditional metal materials cannot meet the requirements of flexibility and strength. Conductive polymer composite materials can meet the above requirements, and have attracted extensive attention in recent years. [0003] Aramid fiber is a high-performance polymer synthetic material with excellent properties such as high strength, high modulus, high temperature resistance, flame retardancy, and chemical stability. Can be used as an excellent base material. Therefore, it is widely used in military industry, protection field, industrial field and so on. The macromolecular structure of poly-p-phenylene terephthalamide fiber (abbre...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M15/37D06M13/513D06M101/36
CPCD06M11/83D06M15/37D06M13/513D06M2101/36
Inventor 周彦粉孙保杰江亮李汶玥李乐乐马建伟陈韶娟
Owner QINGDAO UNIV
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