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Stimulable response colour changing functional coating, and preparation method and application thereof

A functional coating and stimuli-responsive technology, applied in the field of coatings, can solve problems such as the inability to meet the needs of multi-functional color-changing coatings and the single color-changing stimulus

Active Publication Date: 2019-04-23
SHAANXI SCI TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned color-changing epoxy resin coating can only change color under a single stimulus condition (temperature, electric field or ultraviolet light) by adding inorganic substances or changing the main chain structure of the epoxy resin molecule. Demand for multifunctional color-changing coatings in modern society

Method used

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  • Stimulable response colour changing functional coating, and preparation method and application thereof
  • Stimulable response colour changing functional coating, and preparation method and application thereof
  • Stimulable response colour changing functional coating, and preparation method and application thereof

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preparation example Construction

[0042] The present invention also provides a method for preparing a stimuli-responsive color-changing functional coating described in the above technical solution, comprising the following steps:

[0043] (1) After mixing the furanone pigment with a solvent, the bubbles are removed to obtain a furanone pigment solution;

[0044] (2) mixing the furanone pigment solution obtained in the step (1) with epoxy resin to obtain a mixture liquid;

[0045] (3) The mixture liquid obtained in the step (2) is mixed with an amine curing agent to remove air bubbles to obtain a stimuli-responsive color-changing functional coating.

[0046] In the present invention, the amount of each preparation raw material used in the preparation method is the same as the amount of each preparation raw material used in the aforementioned technical solution of the stimuli-responsive color-changing functional coating, and will not be repeated here.

[0047] In the invention, the furanone pigment is mixed wit...

Embodiment 1

[0054] 1.7 g of 1,5-benzodifurandione and 25 g of acetone were magnetically stirred at 900 r / min for 5 minutes, and then ultrasonicated at a frequency of 40 kHz for 30 minutes to obtain a 1,5-benzodifurandione solution; then The obtained 1,5-benzodifurandione solution and 31.1 g of 828-type epoxy resin were magnetically stirred at 900 r / min for 10 minutes to obtain a mixed material liquid; finally, the mixed material liquid was mixed with 42.2 g of 3164-type polymer The amide curing agent was magnetically stirred at 900r / min for 10min, and then ultrasonicated at a frequency of 40kHz for 5min to obtain a stimuli-responsive color-changing functional coating.

Embodiment 2

[0056] 1.7 g of 1,8-benzodifurandione and 25 g of acetone were magnetically stirred at 900 r / min for 5 minutes, and then ultrasonicated at a frequency of 40 kHz for 30 minutes to obtain a 1,8-benzodifurandione solution; then The obtained 1,8-benzodifurandione solution and 31.1 g of 828 type epoxy resin were magnetically stirred at 900 r / min for 10 min to obtain a mixed material liquid; finally, the mixed material liquid was mixed with 42.2 g of 3164 type polymer The amide curing agent was magnetically stirred at 900r / min for 10min, and then ultrasonicated at a frequency of 40kHz for 5min to obtain a stimuli-responsive color-changing functional coating.

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Abstract

The invention belongs to technical field of coatings, and particularly relates to a stimulable response colour changing functional coating, and a preparation method and application thereof. The invention provides the stimulable response colour changing functional coating, which is prepared from the following raw materials: epoxy resin, a furanone pigment, an amine curing agent and a solvent. According to the stimulable response colour changing functional coating, the furanone pigment comprises organic conjugated conductive molecules; hydrogen bond-containing cross-linking molecules are formedby reacting the amine curing agent and the furanone pigment; the cross-linking molecules can show extremely good electronic transition behaviour under different environmental stimuli; the cross-linking molecules are unstable; and electron transitions of different properties can be produced through different stimulus conditions to endow the coating with a colour changing property, so that the coating has different colours under the different environmental stimuli. An experimental result shows that the stimulable response colour changing functional coating provided by the invention has the properties of thermally induced colour changing, ultraviolet induced colour changing and strong acid colour charging; the colour changing stimulating conditions are diversified; and the colour changing range is wide.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a stimuli-responsive color-changing functional coating and a preparation method and application thereof. Background technique [0002] Stimuli-responsive color-changing materials refer to a class of materials whose color changes reversibly or irreversibly under the stimulation of changes in the external environment. The stimuli-response conditions for this type of material usually come from changes in temperature, light intensity, pH, electric field strength, and magnetic field strength in the environment where the material is located, and corresponding thermochromism, photochromism, acid-base discoloration, and electrochromism occur. Chromogenic and magnetochromic phenomena. By endowing the material with the function of changing color, the functional application of the material can be improved. For example, the application of color-changing materials in paint can r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/26
CPCC09D163/00C09D5/26C08K5/1539C08K5/1535C08K5/17C09D5/028C09D5/29C09D5/00C08G65/2612
Inventor 张海昌周启欣邓志峰曾伟秀
Owner SHAANXI SCI TECH UNIV
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