Method for preparing polymer/silver composite membrane by depositing dopamine

A polymer film and polymer technology, which is applied in the plating of superimposed layers, the device for coating liquid on the surface, the coating process of metal materials, etc., to achieve the effect of uniform and dense silver layer, easy operation and high bonding strength

Inactive Publication Date: 2010-06-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the deficiencies in existing polymer surface metallization mo

Method used

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  • Method for preparing polymer/silver composite membrane by depositing dopamine
  • Method for preparing polymer/silver composite membrane by depositing dopamine
  • Method for preparing polymer/silver composite membrane by depositing dopamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Prepare a dopamine aqueous solution with a mass fraction of 0.15mM / mL, adjust the pH to 8.5 with Tris acid and hydrochloric acid solution, soak a 1cm*1cm polyimide membrane in it, and stir at a stirring rate of 60 rpm for 24 hours After the stirring is finished, the polyimide film deposited with polydopamine is taken out, washed with distilled water, and dried in vacuum;

[0025] 2) Configure a silver nitrate solution with a mass fraction of 3wt%, and titrate with ammonia water until the precipitate just disappears completely to obtain a silver plating solution;

[0026] 3) Soak the polyimide film deposited with polydopamine in 10mL of silver plating solution, add 10mL of 6wt% glucose solution, and react for 10 minutes to obtain a polyimide / silver film with uniform metallic silver coverage on both sides Composite film.

[0027] It is determined that the film can conduct electricity, the resistance is between 1.5-2.0Ω, and the reflectivity is 95-98%.

[0028] The el...

Embodiment 2

[0030] 1) Prepare a dopamine aqueous solution with a mass fraction of 0.1mM / mL, and adjust the pH to 6 with Tris acid and hydrochloric acid solution, soak a 1cm*1cm polyimide membrane in it, and stir at a stirring rate of 30 rpm for 0.5 hours After the stirring is finished, the polyimide film deposited with polydopamine is taken out, washed with distilled water, and dried in vacuum;

[0031] 2) configure a silver nitrate solution with a mass fraction of 1 wt%, and titrate with ammonia water until the precipitate just disappears completely to obtain a silver plating solution;

[0032] 3) Soak the polyimide film deposited with polydopamine in 100mL silver plating solution, add 10mL of 1wt% glucose solution, and react for 1 minute to obtain a polyimide / silver composite film with uniform metallic silver coverage on both sides. membrane.

Embodiment 3

[0034] 1) Prepare a dopamine aqueous solution with a mass fraction of 0.3mM / mL, adjust the pH to 10 with Tris acid and hydrochloric acid solution, soak a 1cm*1cm polyimide membrane in it, and stir at a stirring rate of 100 rpm for 36 hours After the stirring is finished, the polyimide film deposited with polydopamine is taken out, washed with distilled water, and dried in vacuum;

[0035] 2) configure a silver nitrate solution with a mass fraction of 6wt%, and titrate it with ammonia water until the precipitate just disappears completely to obtain a silver plating solution;

[0036] 3) Soak the polyimide film deposited with polydopamine in 10mL of silver plating solution, add 10mL of 4wt% glucose solution, and react for 10 minutes to obtain a polyimide / silver film with uniform metallic silver coverage on both sides. Composite film.

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Abstract

The invention discloses a method for preparing a polymer/silver composite membrane by depositing dopamine, which belongs to the field of surface medication for the polymer. The prior polymer surface metallization art has the problems of long time, bad electric conductivity and the like. The method comprises the following steps of: depositing dopamine on the surface of the polymer membrane under an alkaline condition; arranging the polymer membrane, on which the dopamine is deposited, in silver plating solution; and adding reducer glucose solution into the mixture to prepare the polymer/silver composite membrane with high electric conductivity and high reflectivity. The method has simple and convenient operation, short time and low cost, and is applicable for all shapes and performance of polymer membranes. The prepared composite membrane has excellent electric conductivity and high reflectivity, and is applicable for chemical industry, metallurgy, new materials, microelectronic devices, military industrial technology and life system.

Description

technical field [0001] The invention belongs to the field of polymer surface modification, in particular to a method for reducing silver on the surface of a polymer film, in particular to the preparation of a polymer / silver composite with high conductivity and high reflectivity by dopamine deposition in the presence of a reducing agent membrane method. Background technique [0002] The properties of polymer surfaces are closely related to the application of materials in various industries. How to modify polymer surfaces more quickly and effectively has been a hot spot in this field for many years. Lightweight, foldable, highly conductive and highly reflective polyimide / silver composite film has both the high strength, high modulus and excellent high and low temperature resistance of polyimide, and the high conductivity and high reflectivity of silver The characteristics make it have broad application prospects in electrical engineering, electronics, information, military, a...

Claims

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Application Information

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IPC IPC(8): C23C28/00B05D7/24
Inventor 王文才曹兵廖园武德珍金日光赵静潘凯
Owner BEIJING UNIV OF CHEM TECH
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