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Water-based reversible thermochromic ink and preparation method thereof

A temperature-induced discoloration and water-based technology, which is applied in inks, household utensils, applications, etc., can solve the problems of insensitive discoloration, environmental protection, and high discoloration temperature, and achieve the effect of sensitive temperature change, less organic compounds, and sensitive discoloration

Pending Publication Date: 2021-10-01
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The first object of the present invention is to provide a water-based reversible thermochromic ink to solve the common problems of existing reversible thermochromic inks, such as high discoloration temperature, insensitivity to discoloration, irreversible discoloration process, inability to be reused, and most solvent-based temperature-changing inks. The ink is not environmentally friendly and the application range is small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of preparation method of water-based reversible thermochromic ink of the present invention, specifically implement according to the following steps:

[0033] Step 1, according to the mass ratio of 1:3:10, take crystal violet lactone, bisphenol A and myristyl alcohol to form respectively, use grinding equipment to grind the three to prepare thermochromic powder;

[0034] Step 2, weigh polyvinyl alcohol and purified water respectively according to 9% and 66.5% by mass and put them into a beaker, then put the beaker into a magnetic stirring water bath with a water bath temperature of 60°C and stir until the polyethylene After all the alcohol solids are dissolved to form a uniform sol, stop stirring and take out the beaker. After the beaker is cooled to room temperature, the connecting material is obtained; the speed of the magnetic stirring water bath is 500r / min, and the stirring time is controlled at 30min;

[0035] Step 3, weigh the thermochromic powder prepared ...

Embodiment 2

[0043] A kind of preparation method of water-based reversible thermochromic ink of the present invention, specifically implement according to the following steps:

[0044] Step 1, weighing crystal violet lactone, bisphenol A and tetradecyl alcohol respectively according to the mass ratio of 1:2:15, and using grinding equipment to grind the three into thermochromic powder;

[0045] Step 2, weigh polyvinyl alcohol and purified water respectively according to 11% and 74.4% by mass and put the two into a beaker, then put the beaker into a magnetic stirring water bath with a water bath temperature of 70°C and stir until the polyethylene After the alcohol solids are all dissolved to form a uniform sol, stop stirring and take out the beaker. After the beaker is cooled to room temperature, the binder is obtained; the speed of the magnetic stirring water bath is 500r / min, and the stirring time is controlled at 40min;

[0046] Step 3, weigh the thermochromic powder prepared in step 1 ac...

Embodiment 3

[0049] A kind of preparation method of water-based reversible thermochromic ink of the present invention, specifically implement according to the following steps:

[0050] Step 1, weighing crystal violet lactone, bisphenol A and myristyl alcohol respectively according to the mass ratio of 1:4:10, using grinding equipment to grind the three into thermochromic powder;

[0051] Step 2, weigh polyvinyl alcohol and purified water according to 9% and 65.5% mass percentage respectively and put the two into a beaker, then put the beaker into a magnetic stirring water bath with a water bath temperature of 65°C and stir until the polyethylene After all the alcohol solids are dissolved to form a uniform sol, stop stirring and take out the beaker. After the beaker is cooled to room temperature, the connecting material is obtained; the speed of the magnetic stirring water bath is 500r / min, and the stirring time is controlled at 35min;

[0052] Step 3: Weigh the thermochromic powder prepare...

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PUM

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Abstract

The invention discloses a water-based reversible thermochromic ink, which is composed of the following components in percentage by mass: 14-25% of thermochromic powder; 9%-11% of polyvinyl alcohol; 65.5% to 74.4% of purified water; and 0.5%-0.6% of a base material wetting agent, wherein the sum of the mass percentages of the components mentioned above is 100%, the thermochromic powder comprises crystal violet lactone, bisphenol A and tetradecyl alcohol; and the mass ratio of crystal violet lactone to bisphenol A to tetradecyl alcohol is 1: (3-4): (10-20). The invention also discloses a preparation method of the water-based reversible thermochromic ink.

Description

technical field [0001] The invention belongs to the technical field of printing ink preparation, specifically relates to a water-based reversible thermochromic ink, and also relates to a preparation method of the water-based reversible thermochromic ink. Background technique [0002] With the continuous deepening of research on thermochromic inks, the application of thermochromic inks in various fields is also expanding. At present, it is mainly used on the surface of objects that need to display temperature, such as motors, etc. On the product packaging for anti-counterfeiting treatment, after changing the temperature, observe whether the color of the printed text or pattern has changed to identify whether the product is true or not, as well as for personalized printing, etc. [0003] At present, there are more or less the following four problems in temperature-changing inks: ①The discoloration temperature is too high, which is inconvenient for direct inspection. ②The disc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/106C09D11/037C09D11/033
CPCC09D11/50C09D11/106C09D11/037C09D11/033
Inventor 马利娥黄淳伟徐洪利王强郭正阳
Owner XIAN UNIV OF TECH
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