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Method for preparing polyaniline conductive ink

A technology of conductive ink and polyaniline, applied in ink, household utensils, applications, etc., can solve the problems of cumbersome, multi-process, high cost of polyaniline conductive ink, etc., and achieve the effect of improved productivity and good dispersion

Inactive Publication Date: 2009-01-28
苏州丸爱半导体包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the previous preparation method of polyaniline conductive ink needs many and loaded down with trivial details procedures
Moreover, with this cumbersome preparation method, there is a problem that the cost of polyaniline conductive ink is very high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0019] The preparation method of the polyaniline conductive ink of the present application at least includes:

[0020] (1) A step of polymerizing aniline in an aqueous solvent in the presence of an anionic surfactant to obtain a polyaniline colloid (polymerization step),

[0021] (2) A step of adding one or more organic solvents to the reaction solution after the polymerization reaction is completed, separating the two layers, and transferring the polyaniline colloid to a layered process (transfer step), and

[0022] (3) Step of removing the water layer (separation step). It can also include

[0023] (4) Add binder resin to the organic layer. If necessary, a step of evaporating the solvent of the organic layer and adding the organic solvent again (re-dispersion step).

[0024] In the preparation method of the polyaniline conductive ink of the present application, the anionic surfactant used in the polymerization step has two functions: a protic acid and a surfactant. The type is n...

Embodiment 1

[0043] (1) Synthesis of polyaniline

[0044] Add 0.1 mol of dodecylbenzenesulfonic acid and 0.1 mol of aniline to 1.5L of pure water, and stir well. Cool while stirring. When the liquid temperature in the reaction tank reaches 5°C or less, slowly add 500ml of 0.25mol / L ammonium persulfate aqueous solution dropwise to synthesize polyaniline. After the dropwise addition of the aqueous ammonium persulfate solution was completed, the mixture was stirred for 12 hours to complete the reaction.

[0045] (2) Transfer of polyaniline from water system to organic system

[0046] Transfer 300 ml of polyaniline synthesis solution to a separatory funnel, add 200 ml of ethyl acetate to it, and mix well. After standing still until the organic layer is separated from the water layer, the lower water layer is removed. Take out the organic layer, add acrylic resin dissolved in ethyl acetate, mix and stir thoroughly while blowing hot air, and remove the solvent.

[0047] (3) Scatter

[0048] After th...

Embodiment 2

[0052] (1) Synthesis of polyaniline

[0053] Add 0.1 mol of dodecylbenzenesulfonic acid and 0.1 mol of aniline to 1.5L of pure water, and stir well. Cool while stirring. When the liquid temperature in the reaction tank reaches 5°C or less, slowly add 500ml of 0.25mol / L ammonium persulfate aqueous solution dropwise to synthesize polyaniline. After the dropwise addition of the aqueous ammonium persulfate solution was completed, the mixture was stirred for 12 hours to complete the reaction.

[0054] (2) Transfer of polyaniline from water system to organic system

[0055] Transfer 10 ml of polyaniline synthesis solution to a separatory funnel, add 65 g of acrylic resin solution (4 g of acrylic resin, 42 g of toluene, 17.6 g of methyl ethyl ketone, 1.4 g of isopropanol) into it, and mix well.

[0056] After standing still until the organic layer is separated from the water layer, the lower water layer is removed. Take out the organic layer, mix and stir thoroughly while blowing hot air...

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Abstract

The production process of the polyaniline electrically conductive ink is composed of a process for obtaining a polyaniline colloid by polymerization of aniline in an aqueous medium at least in the presence of an anionic surfactant, a process for separating into two layers by adding at least one organic solvent to the reaction solution after the polymerization to migrate the polyaniline colloid to the organic layer, and a process for removing the aqueous layer.

Description

Technical field [0001] The invention of this application relates to a preparation method of polyaniline conductive ink. In more detail, the invention of this application relates to a simple preparation of a polyaniline conductive ink that can transfer polyaniline colloids obtained by polymerization in an aqueous solvent to an organic layer without going through the steps of agglomeration, separation, washing, etc. method. Background technique [0002] In the past, polyaniline conductive ink was prepared by polymerizing aniline in an aqueous solvent in the presence of an anionic surfactant, and agglomerating the obtained polyaniline colloid (for example, Patent Document 1-JP 6-279584, 2- JP 2001-049170). [0003] In the preparation method of this polyaniline conductive ink, the polyaniline colloid formed in the presence of an anionic surfactant not only has a very small particle size (for example, tens of nm to several μm), but also anionic surface active system The compatibility ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/10C09D11/52
Inventor 细田正和阿部真也毛利英希小池美穗仓本宪幸
Owner 苏州丸爱半导体包装有限公司
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