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A kind of stimuli-responsive color-changing functional coating and its preparation method and application

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

Active Publication Date: 2020-12-04
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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  • A kind of stimuli-responsive color-changing functional coating and its preparation method and application
  • A kind of stimuli-responsive color-changing functional coating and its preparation method and application
  • A kind of stimuli-responsive color-changing functional coating and its preparation method and application

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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 the technical field of coatings, and specifically relates to a stimulus-responsive color-changing functional coating and its preparation method and application. The invention provides a stimulus-responsive color-changing functional coating, which includes the following preparation raw materials: epoxy resin, furanone pigments, amine curing agents and solvents. In the present invention, the furanone pigments are organic conjugated conductive molecules. The reaction between the amine curing agent and the furanone pigments forms cross-linked molecules containing hydrogen bonds. The cross-linked molecules can react under different environmental stimuli. It shows excellent electronic transition behavior, and the cross-linked molecule is unstable. It can produce electronic transitions with different characteristics through different stimulation conditions, giving the paint color-changing properties, making it have different colors under different environmental stimuli. Experimental results show that the stimulus-responsive color-changing functional coating of the present invention has thermochromic, ultraviolet photochromic and strong acid color-changing properties, with diverse color-changing stimulation conditions and a wide color-changing range.

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 Patents(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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