Low temperature organic irreversible thermochromic paint, preparation method and application thereof

A thermochromic material and thermochromic technology applied in the field of coatings

Active Publication Date: 2013-10-02
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the above-mentioned reversible color-reversible materials are subject to certain restrictions in use, especially in some occasions that require irreversible coloring, such as: automatic marking, automatic printing

Method used

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  • Low temperature organic irreversible thermochromic paint, preparation method and application thereof
  • Low temperature organic irreversible thermochromic paint, preparation method and application thereof
  • Low temperature organic irreversible thermochromic paint, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This low-temperature organic irreversible thermochromic coating is prepared according to the following component ratios:

[0023]

[0024] The preparation method of this low-temperature organic irreversible thermochromic coating is:

[0025] (1) Disperse talcum powder and organic reversible thermochromic material in a high-speed disperser to obtain component A;

[0026] (2) Add a certain amount of water-based epoxy resin to component A obtained in step (1), add modifier KH-560 and other additives, stir and mix at high speed, take out the coating mixture, and grind it in a grinder Fine, use a 100-mesh fine sieve to filter out the insoluble solid impurities therein to obtain a color-changing paint.

[0027] (3) The obtained discoloration coating is coated on the pre-treated tinplate sheet, and the discoloration performance and basic performance of the coating are tested.

[0028] Embodiment 1 performance measurement result is as following table:

[0029]

Embodiment 2

[0031] This low-temperature organic irreversible thermochromic coating is prepared according to the following component ratios:

[0032]

[0033]

[0034] The preparation method of this low-temperature organic irreversible thermochromic coating is:

[0035] (1) Disperse talcum powder and organic reversible thermochromic material in a high-speed disperser to obtain component A;

[0036] (2) Add a certain amount of water-based epoxy resin to component A obtained in step (1), add modifiers and other additives, stir and mix at high speed, take out the coating mixture, grind it in a grinder, and use A 100-mesh fine sieve is used to filter out insoluble solid impurities therein to obtain a color-changing paint.

[0037] (3) The obtained discoloration coating is coated on the pre-treated tinplate sheet, and the discoloration performance and basic performance of the coating are tested.

[0038] Embodiment 2 performance measurement result is as follows table:

[0039]

Embodiment 3

[0041] This low-temperature organic irreversible thermochromic coating is prepared according to the following component ratios:

[0042]

[0043]

[0044] The preparation method of this low-temperature organic irreversible thermochromic coating is:

[0045] (1) Disperse talcum powder and discoloration material in a high-speed disperser to obtain component A;

[0046] (2) Add a certain amount of water-based epoxy resin to component A obtained in step (1), add modifiers and other additives, stir and mix at high speed, take out the coating mixture, grind it in a grinder, and use A 100-mesh fine sieve is used to filter out insoluble solid impurities therein to obtain a color-changing paint.

[0047] (3) The obtained discoloration coating is coated on the pre-treated tinplate sheet, and the discoloration performance and basic performance of the coating are tested.

[0048] Embodiment 3 performance measurement result is as follows table:

[0049]

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PUM

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Abstract

The invention discloses a low temperature organic irreversible thermochromic paint and a preparation method thereof. By weight part, the paint consists of: 70-85 of waterborne epoxy resin; 10-30 of an organic reversible thermochromic material; 2.5-3.5 of a silane coupling agent; 5.8-6.5 of talcum powder; 0.8-1 of a dispersant; 0.3-0.6 of an anti-settling agent; and 0.5-0.7 of a defoaming agent. Specifically, the organic reversible thermochromic material is prepared by reaction of crystal violet lactone and bisphenol A in fatty alcohol. In the invention, by modifying the organic reversible thermochromic material, the low temperature organic reversible thermochromic material is transformed into the low temperature irreversible thermochromic material, which is especially suitable for automatic lineation, automatic printing and other fields.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a low-temperature organic irreversible thermochromic coating, a preparation method and an application thereof. Background technique [0002] Low-temperature reversible organic color-changing materials are widely used in industry. After research, it is found that organic thermochromic materials are composed of three parts: chromogenic agent, chromogenic agent and solvent compound. The color of the system, the chromogen as the electron acceptor, determines the color depth of the color-changing system, the two undergo a thermal reaction to form a blue dye, and after cooling, the original colorless crystal violet lactone is decomposed, and the electron transfer is reversible with temperature. The solvent compound determines the discoloration temperature of the system. For example: bisphenol A / crystal violet lactone color-changing material system, the basic principle of color change is relate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/26
Inventor 高延敏代仕梅王玉李照磊
Owner HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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