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A kind of printing ink with thermochromic emissivity and its preparation method and application

A printing ink and thermochromic technology, applied in the field of inkjet printing, can solve the problems of complex multi-layer structure and cumbersome preparation process, and achieve the effect of stable printing performance

Active Publication Date: 2021-07-09
NAT UNIV OF DEFENSE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the existing visible / infrared compatible self-adaptive camouflage coatings with complex multi-layer structure and cumbersome preparation process, and to provide a self-adaptive camouflage coating with simple structure and simple preparation process. Layered thermochromic emissivity-changing inkjet printing inks

Method used

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  • A kind of printing ink with thermochromic emissivity and its preparation method and application
  • A kind of printing ink with thermochromic emissivity and its preparation method and application
  • A kind of printing ink with thermochromic emissivity and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The preparation method of the thermochromic emissivity printing ink provided in this embodiment comprises the following steps:

[0042] (1) thermochromic material [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 preparation of

[0043] CuCl 2 2H 2 O 17g and (C 2 h 5 ) 2 Dissolve 21.2g of NH·HCl in 140g of deionized water, stir and mix evenly, react in a constant temperature water bath at 70°C for 2 hours, take it out and cool to room temperature, after the solid precipitates, filter it with absolute ethanol, collect the solid, and weigh it with absolute ethanol Crystallize twice, put the crystals into a vacuum drying oven, and dry them at 60°C for 3 hours to obtain 38 g of bright green needle-like crystals, namely [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 .

[0044] After testing, [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 The purity is 99.99%, the grain size is 18-31μm, and the relative humidity is 15%.

[0045] (2) Preparation of printing ink

[0046] Slowly add 0.25g of BYK-2155 (produ...

Embodiment 2

[0054] The preparation method of the thermochromic emissivity printing ink provided in this embodiment comprises the following steps:

[0055] (1) thermochromic material [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 preparation of

[0056] CuCl 2 2H 2 O 17g and (C 2 h 5 ) 2 Dissolve 19.7g of NH·HCl in 120g of deionized water, stir and mix evenly, react in a constant temperature water bath at 60°C for 2 hours, take it out and cool to room temperature, after the solid precipitates, filter it with absolute ethanol, collect the solid, and weigh it with absolute ethanol Crystallize twice, put the crystals in a vacuum drying oven, and dry them at 60°C for 3 hours to obtain 34.1 g of bright green needle-like crystals, namely [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 .

[0057] After testing, [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 The purity is 99.9%, the grain size is 10-39μm, and the relative humidity is 12%.

[0058] (2) Preparation of printing ink

[0059] Slowly add 0.1 g of BYK-161 (manufac...

Embodiment 3

[0061] The preparation method of the thermochromic printing ink provided in this embodiment comprises the following steps:

[0062] (1) thermochromic material [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 preparation of

[0063] CuCl 2 2H 2 O 17g and (C 2 h 5 ) 2 Dissolve 16.4g of NH·HCl in 120g of deionized water, stir and mix evenly, react in a constant temperature water bath at 65°C for 2h, take it out and cool to room temperature, after the solid precipitates, filter it with absolute ethanol, collect the solid, and weigh it with absolute ethanol Crystallize twice, put the crystals in a vacuum drying oven, and dry them at 60°C for 3 hours to obtain 29 g of bright green needle-like crystals, namely [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 .

[0064] After testing, [(C 2 h 5 ) 2 NH 2 ] 2 CuCl 4 The purity is 99.99%, the grain size is 16-42μm, and the relative humidity is 20%.

[0065] (2) Preparation of printing ink

[0066] Slowly add 0.25g of BYK-2173 (produced by German BYK ...

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Abstract

The invention provides a thermochromic variable emissivity printing ink and a preparation method and application thereof. Water composition, by selecting [(C 2 H 5 ) 2 NH 2 ] 2 CuCl 4 It is a thermochromic material, and is equipped with acrylic resin emulsion and / or polyvinyl alcohol aqueous solution as a linking material and deionized water as a solvent. The printing performance is stable, and the coating printed by the ink of the present invention can be green at room temperature (25° C.), yellow at a higher temperature (52° C. and above), and can be restored to green when the temperature is lowered. The variable emissivity material can make the coating have the characteristic that the emissivity decreases with the increase of temperature within a certain temperature range (60-100 ℃), thereby enabling high-temperature weapons and equipment to achieve adaptive camouflage in the infrared band.

Description

technical field [0001] The invention belongs to the technical field of inkjet printing, and in particular relates to a thermochromic emissivity inkjet printing ink which can be used for preparing an adaptive camouflage coating, a preparation method and application thereof. Background technique [0002] Inkjet printing technology is a non-contact digital printing technology that inputs the required pattern into the computer in digital form, directly sprays ink onto the substrate after image processing, and prints various patterns. This technology gets rid of the dilemma of high energy consumption, high emission, high pollution and low added value of the traditional printing process, and has obvious advantages such as simple production process, breaking the restrictions of traditional color registration and printing, low energy consumption and low pollution. [0003] One of the keys to inkjet printing technology is the printing ink. Inkjet printing inks are mainly divided int...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/38C09D11/30C09D11/50
CPCC09D11/30C09D11/38C09D11/50
Inventor 程海峰谢东津刘东青王楠楠张朝阳嵇海宁汤丹
Owner NAT UNIV OF DEFENSE TECH
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