CNT:SNC:PEDOT ternary water-based conductive ink and preparation method thereof

A conductive ink, water-based technology, used in inks, household appliances, applications, etc., can solve the problems of high price and easy oxidation, achieve excellent stability and conductivity, improve resource utilization, and improve the effect of sustainable development

Active Publication Date: 2021-02-09
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, gold powder and silver powder have stable chemical properties and good electrical conductivity,

Method used

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  • CNT:SNC:PEDOT ternary water-based conductive ink and preparation method thereof
  • CNT:SNC:PEDOT ternary water-based conductive ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039]Example 1

[0040]5 g of pine wood pulp was added to a 100 g DMF solution in which 20 g of sulfamic acid was dissolved, and after reacting at 90° C. for 6 hours, the pine wood pulp was separated from the reaction solution to obtain sulfated cellulose. The sulfated cellulose was added to water and sheared and dispersed for 40 minutes to obtain an aqueous dispersion of sulfated nanocellulose (SNC aqueous dispersion).

[0041]1.5 g of CNT was added to 100 g of SNC aqueous dispersion (1 wt%), and CNT:SNC dispersion was prepared by ultrasonic dispersion. 1.5 g of EDOT monomer was added to the above CNT:SNC dispersion liquid, stirred and dispersed for 1 hour. Then 3.75g of ammonium persulfate and 0.15g of ferric chloride were added, and the polymerization was carried out for 18 hours under a nitrogen atmosphere, and the polymerization temperature was 35°C. After the reaction, the CNT:SNC:PEDOT ternary water-based conductive ink can be obtained.

Example Embodiment

[0042]Example 2

[0043]1 g of pine wood pulp was added to 100 g of DMF solution in which 5 g of sulfamic acid was dissolved, and after reacting at 70° C. for 2 hours, the pine wood pulp was separated from the reaction solution to obtain sulfated cellulose. The sulfated cellulose is added to water and sheared and dispersed for 20 minutes to obtain an aqueous dispersion of sulfated nanocellulose (SNC aqueous dispersion).

[0044]0.5g of CNT was added to 100g of SNC aqueous dispersion (1wt%), and CNT:SNC dispersion was prepared by ultrasonic dispersion. 0.5g of EDOT monomer was added to the above CNT:SNC dispersion liquid, stirred and dispersed for 1 hour. Then, 0.75 g of ammonium persulfate and 0.025 g of ferric chloride were added, and the polymerization was carried out for 6 hours under a nitrogen atmosphere, and the polymerization temperature was 20°C. After the reaction, the CNT:SNC:PEDOT ternary water-based conductive ink can be obtained.

Example Embodiment

[0045]Example 3

[0046]3 g of pine wood pulp was added to 100 g of DMF solution in which 10 g of sulfamic acid was dissolved, and after reacting at 80° C. for 4 hours, the pine wood pulp was separated from the reaction solution to obtain sulfated cellulose. Sulfated cellulose was added to water and sheared and dispersed for 30 minutes to obtain an aqueous dispersion of sulfated nanocellulose (SNC aqueous dispersion).

[0047]1g of CNT was added to 100g of SNC aqueous dispersion (1wt%), and CNT:SNC dispersion was prepared by ultrasonic dispersion. 1g of EDOT monomer was added to the above CNT:SNC dispersion liquid, stirred and dispersed for 1 hour. Then, 2g of ammonium persulfate and 0.075g of ferric chloride were added, and the polymerization was carried out for 12 hours under a nitrogen atmosphere, and the polymerization temperature was 25°C. After the reaction, the CNT:SNC:PEDOT ternary water-based conductive ink can be obtained.

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Abstract

The invention discloses a CNT:SNC:PEDOT ternary water-based conductive ink and a preparation method thereof. The method comprises the following steps: adding carbon nanotubes into a sulfated nanocellulose aqueous dispersion, and conducting uniform dispersing to obtain a CNT:SNC dispersion; adding an EDOT monomer into the CNT:SNC dispersion, and conducting uniform stirring to obtain a mixed liquid;and adding ammonium persulfate and ferric chloride into the mixed solution, and carrying out polymerization reaction in an inert atmosphere to obtain the CNT:SNC:PEDOT ternary water-based conductiveink. The CNT:SNC:PEDOT ternary conductive ink has the advantages of being water-based, environment-friendly, good in stability, good in adhesive force, free of heating curing, high in universality andthe like. Meanwhile, due to the advantages of stable dispersion, high conductivity, excellent printing adaptability, excellent coating mechanical stability and the like, the conductive ink provided by the invention is expected to be applied to printing of various flexible electronic devices.

Description

technical field [0001] The invention belongs to the field of conductive ink, and mainly relates to a CNT:SNC:PEDOT ternary water-based conductive ink and a preparation method thereof. Background technique [0002] Conductive ink refers to the ink that is printed on conductive substrates to enable it to conduct current and eliminate the ability to accumulate static charges. It is generally printed on non-conductive substrates such as plastic, glass, ceramics or cardboard. As a key material used in printed electronic technologies such as radio frequency identification technology, flexible printed circuits, sensors, electromagnetic shielding, membrane switches and e-books, conductive ink has attracted widespread attention for its application advantages and research results. Conductive inks are generally composed of conductive fillers, binders, solvents and various auxiliary agents, among which conductive fillers are the key phase of ink conductivity. Conductive fillers include...

Claims

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Application Information

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IPC IPC(8): C09D11/52C09D11/102C09D11/14C09D11/03C09D11/033C08G61/12
CPCC09D11/52C09D11/102C09D11/14C09D11/03C09D11/033C08G61/126C08G2261/11C08G2261/3243
Inventor 祁海松冯晓王熙军党超王明周生辉
Owner SOUTH CHINA UNIV OF TECH
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