Thermochromic water-based ink for paper material and preparation method of thermochromic water-based ink

A temperature-sensitive discoloration and water-based ink technology, applied in the field of ink, can solve the problem of low adhesion, achieve excellent adhesion, extended application, and good effect of temperature-sensitive discoloration

Inactive Publication Date: 2018-08-07
XIAMEN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, thermochromic pigments have been used in anti-counterfeiting and other fields, but when thermochromic materials are applied to water-based inks, there are often problems such as low adhesion

Method used

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  • Thermochromic water-based ink for paper material and preparation method of thermochromic water-based ink

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preparation example Construction

[0015] Embodiments of the present invention provide a method for preparing a thermochromic water-based ink for paper materials, comprising the following steps:

[0016] S1, 10-20 parts by weight of binder, 2-5 parts by weight of crosslinking agent, 50-70 parts by weight of solvent, 1-2 parts by weight of leveling agent, 0.5-1.5 parts by weight of wetting agent in Stir at 80-95°C for 20-30 minutes, then let stand for 10-20 minutes to form a mixture;

[0017] S2, adding 8-13 parts by weight of an antifoaming agent into the mixture, stirring and mixing for 5-10 minutes, then adding 2-6 parts by weight of temperature-sensitive reversible color powder and 1-3 parts by weight of additives, Stir for 3-8 minutes.

[0018] Furthermore, in a preferred embodiment of the present invention, the temperature-sensitive reversible color powder is pretreated before use: the temperature-sensitive reversible color powder is placed in a dopamine solution, and the pH is adjusted to 8-9 , add lign...

Embodiment 1

[0035] A kind of temperature-sensitive color-changing water-based ink for paper materials provided by the present embodiment:

[0036] Formula: 19 parts of polyvinyl alcohol, 2 parts of modified rosin resin, 2.44 parts of urea, 63.41 parts of deionized water, 9.76 parts of tributyl phosphate, 0.73 parts of wetting agent (PE-100), 1.66 parts of BYK-333 leveling agent 2.5 parts, temperature-sensitive reversible color powder 2.5 parts, auxiliary agent (silica sol and chitosan quaternary ammonium salt with a mass ratio of 4:1) 2.5 parts.

[0037] Preparation steps:

[0038] (1) Put the temperature-sensitive reversible color powder in 0.7g / L dopamine solution, adjust the pH to 8, add 0.14g lignosulfonate, stir for 4 hours, separate and dry.

[0039] (2) Stir the binder, crosslinking agent, solvent, leveling agent and wetting agent at a constant temperature of 90°C at 160r / min for 25min, and after standing for 20min, a milky white sol system mixture is formed;

[0040] (3) Add the...

Embodiment 2

[0042] A kind of temperature-sensitive color-changing water-based ink for paper materials provided by the present embodiment:

[0043] Formula: 15 parts of polyvinyl alcohol, 1.5 parts of modified rosin resin, 3 parts of urea, 65 parts of deionized water, 11 parts of tributyl phosphate, 1.05 parts of wetting agent (PE-100), 1.86 parts of BYK-333 leveling agent 2.5 parts, temperature-sensitive reversible color powder 2.5 parts, auxiliary agent (silica sol and chitosan quaternary ammonium salt with a mass ratio of 4:1) 2.5 parts.

[0044] Preparation steps:

[0045] (1) Put the temperature-sensitive reversible color powder in 0.7g / L dopamine solution, adjust the pH to 8, add 0.14g lignosulfonate, stir for 4 hours, separate and dry.

[0046] (2) Stir the binder, crosslinking agent, solvent, leveling agent and wetting agent at a constant temperature of 90°C at 160r / min for 25min, and after standing for 20min, a milky white sol system mixture is formed;

[0047] (3) Add the defoame...

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Abstract

The invention provides thermochromic water-based ink for a paper material and a preparation method of the thermochromic water-based ink, relating to the technical field of ink. The preparation methodcomprises the following steps: (S1) stirring 10-20 parts of linking materials, 2-5 parts of a cross-linking agent, 50-70 parts of a solvent, 1-2 parts of a flatting agent and 0.5-1.5 parts of a wetting agent (in parts by weight) at 80-95 DEG C for 20-30 minutes, and standing for 10-20 minutes, so as to form a mixture; and (S2) adding 8-13 parts of a defoaming agent into the mixture, stirring and mixing for 5-10 minutes, adding 2-6 parts of reversible thermochromic powder and 1-3 parts of a bonding agent, and stirring for 3-8 minutes. The prepared thermochromic water-based ink has excellent adhesive force and is cheap and harmless to the environment and the human body, and the application of reversible thermochromic materials in the anti-counterfeit printing of packages can be greatly expanded.

Description

technical field [0001] The invention relates to the technical field of inks, and in particular to a temperature-sensitive color-changing water-based ink for paper materials and a preparation method thereof. Background technique [0002] Water-based ink is also referred to as ink for short. Water-based ink is a water-based printing ink prepared by chemical process and physical mixing of linking agent, crosslinking agent, solvent, auxiliary agent, pigment and related additives. With the rapid development of China's packaging industry in recent years, China's ink industry has been greatly expanded. Especially in recent years, while China's packaging industry is pursuing exquisite printing, it also needs to highlight the concept of environmental protection. The development of relatively environmentally friendly water-based ink series has been improved unprecedentedly. Therefore, there is no harm to human health, less environmental pollution, and more environmentally friendly te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/50C09D11/106C09D11/08C09D11/037
CPCC09D11/037C09D11/08C09D11/106C09D11/50
Inventor 李月婵谢安朱诗成李月婷
Owner XIAMEN UNIV OF TECH
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