Reversible thermochromic ink as well as preparation method and application thereof

A thermochromic ink and thermochromic technology, applied in the direction of ink, application, temperature control by electric means, etc., can solve the problems of affecting the anti-counterfeiting effect, long recoloring time, unable to achieve rapid color change, etc. The effect of the chromic effect

Inactive Publication Date: 2020-05-26
HUNAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, thermochromic inks are not sensitive to color change and take a long time to recolor, which cannot achieve rapid color change and affect the anti-counterfeiting effect

Method used

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  • Reversible thermochromic ink as well as preparation method and application thereof
  • Reversible thermochromic ink as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This example provides a method for preparing a reversible thermochromic ink. The raw material components used are as follows: thermochromic powder: 23%, modified malic acid resin: 22%, deionized water: 5%, isopropanol: 40% %, ethyl acetate: 5%, SRE-4190 hyperdispersant: 3%, 2-ethylhexanol: 2%; the specific steps of the preparation method are as follows:

[0038] S1. Preparation of thermochromic powder: mix crystal violet lactone, boric acid, and cetyl alcohol in a mass ratio of 1:15:50, stir with a magnetic stirrer, stir evenly, and put it in a water bath at 80°C for 3 hours to react. After completion, dry in a constant temperature drying oven at 40°C, ball mill and sieve to obtain a thermochromic powder with a fineness of 800 μm;

[0039] S2. Prepare solvent: add the modified malic acid resin to isopropanol and deionized water, stir and dissolve, add half of 2-ethylhexanol and stir evenly;

[0040] S3. Stir once: put the thermochromic powder prepared in the step into ...

Embodiment 2

[0043] This example provides a method for preparing a reversible thermochromic ink. The raw material components used are as follows: thermochromic powder: 20%, modified malic acid resin: 24%, deionized water: 8%, isopropanol: 40% %, ethyl acetate: 6%, SRE-4190 hyperdispersant: 1%, 2-ethylhexanol: 1%; the specific steps of the preparation method are as follows:

[0044] S1. Preparation of thermochromic powder: mix crystal violet lactone, boric acid, and cetyl alcohol in a mass ratio of 5:20:45, stir with a magnetic stirrer, stir evenly, and put it in a 95°C water bath for 4 hours to react. After completion, dry in a constant temperature drying oven at 40°C, ball mill and sieve to obtain a thermochromic powder with a fineness of 700 μm;

[0045] S2. Prepare the solvent: add the modified malic acid resin to isopropanol and deionized water, stir and dissolve, add ethyl acetate and 0.5% 2-ethylhexanol and stir evenly;

[0046] S3. Stir once: put the thermochromic powder prepared i...

Embodiment 3

[0049]This example provides a method for preparing a reversible thermochromic ink. The raw material components used are as follows: thermochromic powder: 20%, modified malic acid resin: 20%, deionized water: 4%, isopropanol: 45% %, ethyl acetate: 7%, SRE-4190 hyperdispersant: 2%, 2-ethylhexanol: 2%; the specific steps of the preparation method are as follows:

[0050] S1. Preparation of thermochromic powder: mix crystal violet lactone, boric acid, and cetyl alcohol in a mass ratio of 1:20:50, stir with a magnetic stirrer, stir evenly, and put it in a 90°C water bath for 5 hours to react. After completion, dry in a constant temperature drying oven at 40°C, ball mill and sieve to obtain a thermochromic powder with a fineness of 700 μm;

[0051] S2. Prepare the solvent: add the modified malic acid resin to isopropanol, stir and dissolve, add half of 2-ethylhexanol and stir evenly;

[0052] S3. Stir once: put the thermochromic powder prepared in the step into the solution in step...

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PUM

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Abstract

The invention discloses reversible thermochromic ink as well as a preparation method and application thereof. Crystal violet lactone is used as a color former; boric acid is used as a color developingagent to prepare a thermochromic material; the thermochromic material is added into the ink, so that the ink is endowed with a thermochromic effect, is light blue at normal temperature, is grey whiteunder heat sources such as a lighter and the like, the anti-counterfeiting function of the ink is realized, printed images and texts can be subjected to color change through a certain heat source, and the color can be recovered after the heat source is removed for a period of time; the identification method is convenient and rapid, and thermochromism has reversibility.

Description

technical field [0001] The invention relates to the technical field of inks, more specifically, to a reversible temperature-sensitive ink and its preparation method and application. Background technique [0002] With the continuous development of the economy, the number of counterfeit and shoddy products continues to rise, making the anti-counterfeiting of products more and more important. In the current commercial field, in order to avoid counterfeiting and shoddy goods, companies usually put anti-counterfeiting marks on their products. Anti-counterfeiting. Ink anti-counterfeiting is a widely used anti-counterfeiting method at present, that is, adding special anti-counterfeiting materials to ink binders and processing special printing inks through special processes. It is mainly used on product trademarks and packaging. This type of anti-counterfeiting technology is simple, low-cost, and easy to detect. [0003] In order to further improve the anti-counterfeiting strength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50G05D23/30
CPCC09D11/50G05D23/30
Inventor 钟云飞刘丹飞崔子杰游诗英
Owner HUNAN UNIV OF TECH
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