Silver-plated conductive aramid paper and preparation method thereof

A technology of aramid paper and Zhongyin, which is applied in papermaking, paper, physical treatment of paper, etc., can solve the problems of unfavorable large-scale fine production, low conductivity of conductive aramid fiber, and increased concentration of chemical reagents, and achieve high electromagnetic shielding efficiency , Excellent washing resistance and bending firmness, the effect of improving hydrophilicity

Active Publication Date: 2020-07-03
QINGDAO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method requires a large amount of chemical reagents to be soaked in the pre-treatment of aramid fiber, and the overall requirements for the concentration of chemical reagents, reaction time, reaction temperature and other factors are relatively high. Although the aramid fiber is endowed with certain conductivity, However, uncontrollable factors such as the concentration of chemical reagents after soaking and use increase, which is not conducive to large-scale fine production. At the same time, the processing time is long, and a large number of chemical reagents cause certain environmental pollution. The conductive aramid fibers prepared have low conductivity.

Method used

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  • Silver-plated conductive aramid paper and preparation method thereof
  • Silver-plated conductive aramid paper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Cut a commercially purchased aramid paper substrate with a thickness of 0.18mm into a size of 5cm×5cm, soak it in 50% ethanol solution, wash it for 30min, take it out and dry it.

[0031] (2) The cleaned aramid paper substrate is subjected to plasma treatment at room temperature under the conditions of a nozzle height of 4 cm, a nozzle speed of 1 m / min, and a duty ratio of 80%.

[0032] (3) Put the plasma-treated aramid paper substrate into the silver nitrate solution with a concentration of 20g / L prepared in advance. After soaking for 30min, slowly add the glucose solution with a concentration of 30g / L to the silver nitrate solution. In the solution, after reacting for 24 hours, the aramid paper substrate was taken out, washed three times with deionized water, and then vacuum-dried at 60°C for 24 hours to obtain silver-plated conductive aramid paper.

[0033] The electrical resistance of the conductive aramid paper prepared in this example is 0.152Ω / sq. After placi...

Embodiment 2

[0036] (1) Cut a commercially purchased aramid paper substrate with a thickness of 0.18mm into a size of 5cm×5cm, soak it in 50% ethanol solution, wash it for 30min, take it out and dry it.

[0037] (2) The cleaned aramid paper substrate is subjected to plasma treatment at room temperature under the conditions of a nozzle height of 5 cm, a nozzle speed of 1 m / min, and a duty ratio of 80%.

[0038] (3) Put the plasma-treated aramid paper substrate into the silver nitrate solution with a concentration of 15g / L prepared in advance. After soaking for 30min, slowly add the glucose solution with a concentration of 30g / L to the silver nitrate solution. In the solution, after 24 hours of reaction, the aramid paper was taken out, washed three times with deionized water, and then vacuum-dried at 60° C. for 24 hours to obtain silver-plated conductive aramid paper.

[0039] The resistance of the conductive aramid paper prepared in this example is 0.051 Ω / sq. After washing the conductive a...

Embodiment 3

[0042] (1) Prepare 50% ethanol solution, cut a commercially purchased aramid paper with a thickness of 0.30 mm into 5 cm×5 cm, soak it, wash it for 60 min, take it out and dry it.

[0043] (2) The cleaned aramid paper is subjected to room temperature plasma treatment under the conditions of a nozzle height of 2 cm, a nozzle speed of 1 m / min, and a duty ratio of 30%.

[0044] (3) Put the plasma-treated aramid paper into the silver nitrate solution with a concentration of 5g / L prepared in advance. After soaking for 60min, slowly drop the glucose solution with a concentration of 10g / L into the silver nitrate solution In the process, after the reaction was carried out for 36 hours, the aramid paper was taken out, washed three times with deionized water, and then vacuum-dried at 60° C. for 24 hours to obtain silver-plated conductive aramid paper.

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Abstract

The invention discloses a silver-plated conductive aramid paper and a preparation method thereof. The preparation method comprises the following steps: step a, washing an aramid paper substrate with acleaning agent, removing the impurities on the surface, and drying; step b, performing a plasma treatment on the cleaned aramid paper substrate to obtain a surface-activated aramid paper substrate; and step c, putting the aramid paper substrate processed by the plasma treatment into a silver ammonia solution, activating for a certain period of time, slowly dropwise adding a reducing agent into the solution, reacting for a certain period of time, taking out the aramid paper substrate, fully cleaning the aramid paper substrate with deionized water, and drying to finally obtain the conductive aramid paper with a silver-plated surface. The mass ratio of the silver content in the prepared conductive aramid paper is 3%-12%, the conductive aramid paper has good conductivity and electromagnetic shielding performance, the preparation process is simple, and the operation is convenient.

Description

technical field [0001] The invention relates to the technical field of conductive polymer composite materials, in particular to a silver-plated conductive aramid paper and a preparation method thereof. Background technique [0002] Conductive materials are widely used in many fields such as electrostatic protection, electromagnetic shielding, electric heating and sensors. Although traditional metal conductive materials have high conductivity, they are heavy and brittle, which can no longer meet the requirements of contemporary society for lightweight and flexible materials. Conductive polymer composites have the advantages of light weight, good flexibility, and simple preparation process, and have received extensive attention in recent years. [0003] Aramid fiber has the advantages of small specific gravity, high specific strength, good impact resistance, chemical corrosion resistance, and high temperature resistance. It is a good base material for preparing conductive com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/06D21H23/50D21H25/04
CPCD21H19/06D21H23/50D21H25/04
Inventor 周彦粉马建伟孙振华江亮陈韶娟
Owner QINGDAO UNIV
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