MXene-based electrothermal ink and preparation method and application thereof

An electric heating ink and electric heating technology, which is applied in the fields of ink, application, household appliances, etc., can solve the problems of unstable electric heating performance of carbon-based ink, high price, and difficult preparation of polymer materials.

Active Publication Date: 2021-09-10
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They all have excellent low-voltage heating performance, but they are expensive, not corrosion-resistant, and not conducive to large-scale production; polymer-based conductive heating inks refer to conductive inks that use polymer conductive polymers as fillers. Aniline, polyacetylene conductive ink
However, the preparation of polymer materials is relatively difficult, the cost is high, the process is complicated, and the electrothermal performance is not ideal, which greatly limits its development; carbon-based inks have problems such as unstable electrothermal performance and high driving voltage.

Method used

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  • MXene-based electrothermal ink and preparation method and application thereof
  • MXene-based electrothermal ink and preparation method and application thereof
  • MXene-based electrothermal ink and preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0037] Provide a MXene-based electrothermal ink, including MXene (Ti 3 C 2 T x ) nanosheets (the particle diameter of the lateral dimension is 0.5-2.5 microns, and the sheet thickness is 1-2 nanometers), xanthan gum and water, wherein the mass fraction of MXene is 13.04%, and the mass ratio of MXene to xanthan gum is 150 :8.

[0038] Provide a kind of preparation method of above-mentioned MXene-based electrothermal ink, comprise the following steps:

[0039] 1) 1.0g precursor powder (Ti 3 AlC 2 ) was placed in a mixed solution of 20mL 9mol / L concentrated hydrochloric acid and 1.98g lithium fluoride powder for etching. After etching for a period of time, the acidic substances contained in the solution were removed by centrifugation, and then the centrifugation was continued to obtain a large amount of hydrophilic groups on the surface. Agglomerated MXene nanosheet aqueous dispersion;

[0040] 2) The MXene suspension obtained in step 1) is frozen into ice cubes in freeze d...

Embodiment 2

[0046] Provide a MXene-based electrothermal ink, including MXene (Ti 3 C 2 T x ) nanosheets (the particle diameter of the transverse dimension is 0.5-2.5 microns, and the sheet thickness is 1-2 nanometers), xanthan gum and water, wherein the mass fraction of MXene is 16.7%, and the ratio of MXene to xanthan gum is 200: 4.

[0047] Provide a kind of preparation method of above-mentioned MXene-based electrothermal ink, comprise the following steps:

[0048] 1) 1.0g precursor powder (Ti 3 AlC 2 ) was placed in a mixed solution of 20mL 9mol / L concentrated hydrochloric acid and 1.98g lithium fluoride powder for etching. After etching for a period of time, the acidic substances contained in the solution were removed by centrifugation, and then the centrifugation was continued to obtain a large amount of hydrophilic groups on the surface. Agglomerated MXene nanosheet aqueous dispersion;

[0049] 2) The MXene suspension obtained in step 1) is frozen into ice cubes in freeze dryi...

Embodiment 3

[0055] Provide a MXene-based electrothermal ink, including MXene (Ti 3 C 2 T x ) nanosheets (the particle diameter of the lateral dimension is 0.5-2.5 microns, and the sheet thickness is 1-2 nanometers), xanthan gum and water, where the mass fraction of MXene in the bonding substrate is 21.94%, MXene and xanthan The concentration ratio of glue is 280:2.

[0056] Provide a kind of preparation method of above-mentioned MXene-based electrothermal ink, comprise the following steps:

[0057] 1) 1.0g precursor powder (Ti 3 AlC 2 ) was placed in a mixed solution of 20mL 9mol / L concentrated hydrochloric acid and 1.98g lithium fluoride powder for etching. After etching for a period of time, the acidic substances contained in the solution were removed by centrifugation, and then the centrifugation was continued to obtain a large amount of hydrophilic groups on the surface. Agglomerated MXene nanosheet aqueous dispersion;

[0058] 2) The MXene suspension obtained in step 1) is froz...

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Abstract

The invention discloses MXene-based electrothermal ink as well as a preparation method and application thereof, and belongs to the technical field of electrothermal ink. The electrothermal printing ink comprises MXene nanosheets, xanthan gum and water, the mass fraction of the MXene is 5-35%, and the mass ratio of the MXene to the xanthan gum is (300-200): (1-10). The preparation method comprises the following steps: firstly, adding the xanthan gum powder into the water, and fully mixing to prepare a bonding base material; and then fully dispersing the MXene powder into the bonding base material to prepare the MXene-based electrothermal ink. The MXene-based electrothermal ink is good in stability, low in solid content, green, environment-friendly and low in cost, when the MXene-based electrothermal ink is used for silk-screen printing, the curing temperature is low, an obtained silk-screen printing electrothermal film can shield 99.99% of electromagnetic waves under the X wave band, and the electromagnetic shielding characteristic is excellent; moreover, stable temperature rise can be realized under a relatively low driving voltage, effective work in a severe cold environment can be realized, a heat preservation effect is achieved, and potential application prospects are realized.

Description

technical field [0001] The invention belongs to the technical field of electrothermal inks, and in particular relates to an MXene-based electrothermal ink and its preparation method and application. Background technique [0002] With the rapid development of the electronics industry, electrothermal inks are more and more widely used in printed electronics technology, and have attracted widespread attention in the fields of radio frequency identification systems, radiant heating films, flexible printed circuit boards, and electromagnetic shielding. [0003] Conductive heating ink is a functional conductive coating, which can directly convert electrical energy into thermal energy, and is a key factor affecting electrothermal performance. The existing inks with electrothermal properties are divided into three categories: metal conductive inks, polymer conductive inks and carbon-based conductive inks. Metal conductive ink is a kind of conductive ink made of conductive metal pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/52
CPCC09D11/52
Inventor 李宝文吴晗
Owner WUHAN UNIV OF TECH
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