Reversible color-changing material and reversible temperature-indicating coating, and preparation methods and applications thereof

A technology of color-changing materials and temperature-indicating coatings, which is applied in the field of coatings, can solve the problems of low temperature-indicating temperature points, inconspicuous changes, and inconspicuous discoloration, and achieve the effects of high temperature-indicating temperature points, economical cost savings, and obvious color changes

Inactive Publication Date: 2020-06-02
SHENZHEN POWER SUPPLY BUREAU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently disclosed color-changing coatings mainly include the following types: 1) Reversible color-changing coatings made of isocyanate curing agent and hydroxyl resin or amino resin containing active hydrogen at a mass ratio of 1:3, and the color-changing temperature range of temperature sensitivity is -5 ℃~70℃, there are 14 temperature points, the colors are dark green, medium green, malachite green, grass green, black, sea blue, royal blue, golden yellow, golden red, bright red, rose red, bright yellow, brown black, pink, orange red , but the problem with this scheme is that the temperature display temperature point is low, and the colors between adjacent temperature points are similar, and the change is not obvious, which cannot reflect the heating fault problem of power distribution equipment
2) Polyurethane resin, thermosetting acrylic resin and full methyl etherified amino resin are used as film-forming substances, and temperature-sensitive microcapsules and vanadium dioxide are used as thermochromic

Method used

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preparation example Construction

[0030] The invention provides a preparation method of the above-mentioned reversible discoloration material, which comprises the following steps: uniformly mixing crystal violet lactone, bisphenol A and a color developer to prepare the reversible discoloration material.

[0031] The above-mentioned preparation method is simple to make, does not require special instruments and equipment, and has simple formula and wide sources of raw materials, can significantly reduce the preparation cost, and is suitable for industrial production and application.

[0032] Further, the step of uniformly mixing crystal violet lactone, bisphenol A and developer includes the following steps: mixing crystal violet lactone, bisphenol A and developer at 50°C-100°C (preferably 80°C) Heat and melt under conditions, add crystal violet lactone and bisphenol A, mix well, cool to below 40°C, and grind to powder.

[0033] The present invention also provides the application of the above-mentioned reversible...

Embodiment 1

[0050] The reversible temperature-indicating paint in this embodiment is composed of a reversible color-changing material and RTV, and the reversible color-changing material is: RTV=1:2 according to the mass ratio, and the reversible color-changing material is composed of crystal violet lactone, bisphenol A and stearic acid Composition; by mass ratio crystal violet lactone: bisphenol A: stearic acid = 1:1:50.

[0051] Its preparation method comprises the following steps:

[0052] a. Heat stearic acid in a beaker to 80°C until completely melted, then add crystal violet lactone and bisphenol A and continue heating and stirring for 10 minutes. After stopping heating, naturally cool the obtained product to room temperature, take it out and place it in a ceramic mortar. Grind into powder to obtain reversible color-changing materials;

[0053] b. Mix RTV and reversible color-changing material evenly, then paint on the casing of the power distribution equipment, and let it dry natur...

Embodiment 2

[0055] The reversible temperature-indicating paint in this embodiment is composed of a reversible color-changing material and RTV, and the reversible color-changing material is RTV=1:5 according to the mass ratio, and the reversible color-changing material is composed of crystal violet lactone, bisphenol A and stearic acid Composition; by mass ratio crystal violet lactone: bisphenol A: stearic acid = 1:1:50.

[0056] Its preparation method comprises the following steps:

[0057] a. Heat stearic acid in a beaker to 80°C until it melts completely, then add crystal violet lactone and bisphenol A and continue heating and stirring for 10 minutes, stop heating and cool the resulting product naturally to the temperature shown, take it out and place it in a ceramic mortar Grind into powder to obtain reversible color-changing materials;

[0058] b. Mix RTV and reversible color-changing material evenly, then paint on the casing of the power distribution equipment, and let it dry natura...

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Abstract

The invention relates to a reversible color-changing material and a reversible temperature-indicating coating, and preparation methods and applications thereof. The reversible color-changing materialcomprises crystal violet lactone, bisphenol A and a color developing agent, and the color developing agent is stearic acid or naphthalene. According to the reversible color-changing material, the combination of crystal violet lactone, bisphenol A and the specific color developing agent is innovatively adopted, so that the reversible color-changing material has a proper temperature indicating range, is high in temperature indicating temperature point, obvious in color change and single in color changing, and can be recognized by naked eyes to achieve the purpose of warning temperature. The color of the temperature-indicating coating is reversible, so that the temperature-indicating coating can be repeatedly used, the reversible color-changing material has few raw materials, the economic cost can be saved, the effect is obvious, and the practicability is higher.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a reversible color-reversing material, a reversible temperature-indicating coating and a preparation method and application thereof. Background technique [0002] The safe operation of the power system is related to the development of the entire national economy and the stability of people's lives. However, there are many factors that affect the safe operation of the power system, and one of the important aspects is the safe operation of the electrical equipment itself. Because most of the electrical equipment adopts a closed structure, the heat dissipation is poor, the heat gradually accumulates, and the local temperature of the equipment rises. Excessive high temperature endangers the normal operation of the equipment and even reduces the service life of the equipment. Intuitive and effective monitoring of the temperature of the equipment is not only related to the life of th...

Claims

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Application Information

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IPC IPC(8): C09D5/26C09D183/04
CPCC09D5/26C09D183/04C08K5/18C08K5/13
Inventor 赵法强吕为薛荣胡琴钟毅锋周坤余郁彬汪为陈烁杭张廷丁刘颖张达汪建波
Owner SHENZHEN POWER SUPPLY BUREAU
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