CN111218147A - Reversible color-changing material, reversible temperature indicating coating, preparation method and application thereof - Google Patents
Reversible color-changing material, reversible temperature indicating coating, preparation method and application thereof Download PDFInfo
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- CN111218147A CN111218147A CN202010092457.5A CN202010092457A CN111218147A CN 111218147 A CN111218147 A CN 111218147A CN 202010092457 A CN202010092457 A CN 202010092457A CN 111218147 A CN111218147 A CN 111218147A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/26—Thermosensitive paints
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
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Abstract
The invention relates to a reversible color-changing material, a reversible temperature indicating coating, a preparation method and an application thereof, wherein the reversible color-changing material comprises the following components: crystal violet lactone, bisphenol A and a color developing agent, wherein the color developing agent is stearic acid or naphthalene. The reversible color-changing material innovatively adopts the combination of crystal violet lactone, bisphenol A and a specific color developing agent, so that the reversible color-changing material has a proper temperature indication range, and has the advantages of high temperature indication temperature point, obvious color change, single color change and capability of being identified by naked eyes, thereby achieving the purpose of warning and indicating temperature. The color of the warm paint is reversible, so that the warm paint can be repeatedly utilized, and the reversible color-changing material has the advantages of less raw materials, economic cost saving, obvious effect and higher practicability.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a reversible color-changing material, a reversible temperature-indicating coating, and a preparation method and application thereof.
Background
The safe operation of the power system is related to the development of the whole national economy and the stability of the people's life. However, there are many factors that affect the safe operation of the power system, and one important aspect is the safe operation of the electrical equipment itself. Because most electrical equipment adopts closed structure, lead to the heat dissipation poor, heat is accumulation gradually, and equipment local temperature risees, and normal operating of equipment is endangered even to too high temperature reduces the life of equipment. The intuitive and effective monitoring of the temperature of the equipment is not only relevant to the service life of the equipment, but also relevant to the safe operation of the power grid.
At present, the coating applied to monitoring the heating fault temperature of the power distribution equipment is few, and the prior art does not have the color-changing coating of the heating fault temperature point of the typical power distribution equipment. The currently disclosed color-changing coating mainly comprises the following components: 1) the reversible color-changing coating is prepared from an isocyanate curing agent and hydroxyl resin or amino resin containing active hydrogen according to a mass ratio of 1:3, the temperature-sensing color-changing temperature range is-5-70 ℃, and the temperature-sensing color-changing coating has 14 temperature points, wherein the colors of the temperature points are respectively dark green, medium green, malachite green, grass green, black, sea blue, sapphire blue, golden yellow, golden red, scarlet, rose red, bright yellow, brownish black, peach red and orange red. 2) The prepared color-changing coating has good high temperature resistance, aging resistance and flame retardance by taking the polyurethane resin, the thermosetting acrylic resin and the fully methylated amino resin as film-forming substances and taking the temperature-sensing microcapsules and the vanadium dioxide as thermochromism materials, but the color-changing temperature range is 30-80 ℃, the range is too large, the color change is not obvious, and the fault monitoring of power distribution equipment is not facilitated. In addition, adopt infrared temperature sensor to realize the real time monitoring to the inside temperature of electric substation in addition, when the temperature exceeded the safe value, the control box started the fan and dispels the heat the cooling to equipment, can promote power transmission and transformation equipment security, but this technical scheme has the problem that the installation is implemented complicatedly, can not detect power transmission and transformation equipment trouble temperature point that generates heat pertinence, and the sensor detects that it is great by environmental factor influence degree to can only carry out temperature monitoring to local point.
Disclosure of Invention
Based on the above, there is a need for a reversible color-changing material, a reversible temperature indicating coating and a preparation method thereof. The reversible color-changing material has a proper temperature indication range, is high in temperature indication temperature point, is obvious and reversible in color change, and can achieve the purpose of warning and indicating temperature.
A reversible color-changing material comprises the following components: crystal violet lactone, bisphenol A and a color developing agent, wherein the color developing agent is stearic acid or naphthalene.
In one embodiment, the color developing agent is stearic acid, and the temperature indication range of the reversible color changing material is 69-77 ℃.
In one embodiment, the color-developing agent is stearic acid, and the mass ratio of the crystal violet lactone to the bisphenol a to the color-developing agent is 1: (0.8-1.2) and (45-55).
In one embodiment, the indicator is naphthalene, and the temperature indication range of the reversible color-changing material is 79-82 ℃.
In one embodiment, the color developer is naphthalene, and the mass ratio of the crystal violet lactone to the bisphenol a to the color developer is 1: (1.5-2.2) and (45-55).
The preparation method of the reversible color-changing material comprises the following steps:
and uniformly mixing the crystal violet lactone, the bisphenol A and the color developing agent to prepare the reversible color-changing material.
In one embodiment, the step of uniformly mixing the crystal violet lactone, the bisphenol a and the color developer comprises the following steps:
heating and melting the color developing agent at 50-100 ℃, adding the crystal violet lactone and the bisphenol A, uniformly mixing, cooling to below 40 ℃, and grinding to be powder.
A reversible temperature indicating coating comprises the following components: the color-changing material comprises silicon sulfide rubber and a reversible color-changing material, wherein the reversible color-changing material is the reversible color-changing material.
In one embodiment, the mass ratio of the reversible color-changing material to the vulcanized silicone rubber is 1 (2-5).
The reversible color-changing material or the reversible temperature indicating paint is applied to the preparation of power distribution equipment.
In one embodiment, the voltage class of the power distribution equipment is 10 KV-35 KV.
The reversible color-changing material innovatively adopts the combination of crystal violet lactone, bisphenol A and a specific color developing agent, so that the reversible color-changing material has a proper temperature indication range, and has the advantages of high temperature indication temperature point, obvious color change, single color change and capability of being identified by naked eyes, thereby achieving the purpose of warning and indicating the temperature. The reversible color-changing material has reversible color, so the reversible color-changing material can be repeatedly utilized, and the reversible color-changing material has less raw materials, can save economic cost and has higher practicability.
Detailed Description
In order that the invention may be more fully understood, a more particular description of the invention will now be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a reversible color-changing material, which comprises the following components: crystal violet lactone, bisphenol A and color developing agent, wherein the color developing agent is stearic acid or naphthalene.
The reversible color-changing material innovatively adopts the combination of crystal violet lactone, bisphenol A and a specific color-developing agent, and can select the appropriate color-developing agent according to the specific requirements of the power distribution equipment so as to obtain a temperature indication range in an appropriate range, the warning temperature is high, the color-changing temperature is above 70 ℃, and the heating fault of the power distribution equipment can be well reflected. The reversible color-changing material has few temperature points, changes color between blue and white, obviously changes color and can well display the temperature change condition of power distribution equipment. In addition, the reversible color-changing material has the advantages of rapid color change, less environmental influence, wider application range and reversible color, so that the reversible color-changing material can be repeatedly used, has less raw materials, can save economic cost, has obvious effect and has higher practicability.
Further, the color developing agent is stearic acid, and the temperature indication range of the reversible color changing material is 69-77 ℃; further, the temperature indication range is 75 ℃ to 77 ℃. The reversible color-changing material is blue at 69-77 ℃, the blue color begins to fade at 69 ℃, the blue color begins to white at 77 ℃ or above, the color changes from white to blue at the same time when the temperature begins to decrease, and the description is omitted, so that the reversible color-changing material can well reflect about 75 ℃ which is one of important heating fault temperature points of power distribution equipment.
It should be understood that the "temperature indication range" of the present invention is the range of the temperature point at which the color of the material changes, and it should be understood that there may be differences according to the kind of the auxiliary materials added in the coating material to which it is applied and the content thereof, and it should be understood that the present invention is within the protection scope thereof. For example: the temperature indication range of the reversible color-changing material is 69-77 ℃, which means that the temperature point of the color change of the reversible color-changing material is in the range of 69-77 ℃, the blue color can begin to lighten at the temperature of 69 ℃ and can also begin to lighten at the temperature of 70 ℃, and the reversible color-changing material is understood to be in the protection range of the invention.
Further, the color developing agent is stearic acid, and the mass ratio of the crystal violet lactone to the bisphenol A to the stearic acid is 1: (0.8-1.2) and (45-55).
The reversible color-changing material can form a form that stearic acid is used as a carrier and crystal violet lactone and bisphenol A are wrapped by a color-developing agent by controlling the components within the range, so that the reversible color-changing material only generates color change within a temperature indication range without phase change, and the color development is accurate and obvious. And by controlling each component in the range, the color change obvious degree of the reversible color-changing material can be improved, the identification degree of naked eyes is improved, the temperature of the power distribution equipment is conveniently monitored, and the temperature warning is realized.
Further, the color developing agent is naphthalene, and the temperature indication range of the reversible color changing material is 79-82 ℃; further, the temperature indication range is 80 ℃ to 82 ℃. The reversible color-changing material is blue at the temperature of 79-82 ℃, the blue color becomes light from 79 ℃, the color completely changes into white at 82 ℃, and the color changes from white to blue when the temperature is reduced, which is not described herein any more, and the reversible color-changing material can well reflect about 80 ℃ which is one of important heating fault temperature points of power distribution equipment.
Further, the color developing agent is naphthalene, and the mass ratio of crystal violet lactone, the bisphenol A and the naphthalene is 1: (1.5-2.2) and (45-55).
The reversible color-changing material can form a form that naphthalene is used as a carrier and crystal violet lactone and bisphenol A are wrapped by a color-developing agent by controlling the components within the range, so that the reversible color-changing material only generates color change within a temperature indication range without phase change, and the color development is accurate and obvious. And each component is controlled within the range, so that the color change obvious degree of the reversible color-changing material can be improved, the visual identification degree is improved, the temperature of the power distribution equipment can be monitored more conveniently, and the temperature warning is realized.
The invention provides a preparation method of the reversible color-changing material, which comprises the following steps: uniformly mixing crystal violet lactone, bisphenol A and a color developing agent to prepare the reversible color-changing material.
The preparation method is simple in preparation, free of special instruments and equipment, simple in formula, wide in raw material source, capable of remarkably reducing the preparation cost and suitable for industrial production and application.
Further, the step of uniformly mixing the crystal violet lactone, the bisphenol A and the color developing agent comprises the following steps: heating crystal violet lactone, bisphenol A and developer at 50-100 deg.C (preferably 80 deg.C) for melting, adding crystal violet lactone and bisphenol A, mixing, cooling to below 40 deg.C, and grinding into powder.
The invention also provides application of the reversible color-changing material in preparation of a reversible temperature indicating coating. The paint has the advantages of proper temperature indication range, high temperature indication temperature point, obvious color change, single color change and capability of being identified by naked eyes, achieves the aim of warning and indicating the temperature, and is particularly suitable for preparing reversible temperature indicating paint.
The invention also provides a reversible temperature indicating coating which comprises the vulcanized silicone rubber and a reversible color-changing material, wherein the reversible color-changing material is the reversible color-changing material. The reversible color-changing material is as described above, and is not described in detail herein.
Through preparing into coating with above-mentioned reversible temperature-indicating color-changing material, can coat on the distribution equipment surface, so when distribution equipment generates heat, its surperficial coating can demonstrate the colour and change, and then realizes distribution equipment's the temperature monitoring of warning, improves distribution equipment's security. Compared with the coating prepared by adopting infrared equipment and the like, the coating prepared by the method has the advantages of lower cost, lower requirement on power distribution equipment and wider application.
It is understood that the reversible temperature indicating coating can be added with auxiliary materials and solvents acceptable in the coating field according to the performance requirements of the coating per se so as to meet the requirements of each device, and the reversible temperature indicating coating is understood to be in the protection scope of the invention.
Furthermore, in the reversible temperature indicating coating, the mass ratio of the reversible color-changing material to the vulcanized silicone rubber is 1 (2-5). Furthermore, the mass ratio of the reversible color-changing material to the vulcanized silicone rubber is 1: 3. By mixing the RTV and the reversible color-changing material, the PTV can bond the reversible color-changing material on the equipment to be coated, so that the bonding strength of the temperature indicating paint and the equipment to be coated and the coating performance of the paint are improved.
Through a large number of experiments, research personnel find that the mass ratio of the reversible color-changing material to the vulcanized silicone Rubber (RTV) has a certain influence on the obvious degree of the color change of the coating, when the RTV content is lower, the color-changing effect is more obvious, but when the RTV content is too low, the acting force between the coating and power distribution equipment can be influenced, the service life is reduced, and by controlling the mass ratio of each component within the range, the service life of the coating can be prolonged on the basis of ensuring the visual identification degree.
The invention also provides application of the reversible color-changing material or the reversible temperature indicating paint in preparation of equipment. The voltage class of the power distribution equipment is preferably 10 KV-35 KV. The reversible color-changing material and the reversible temperature indicating paint are as described above, and are not described in detail herein.
The present invention also provides a power distribution apparatus comprising an apparatus substrate and a coating supported on the apparatus substrate, wherein the coating comprises a reversible color change material or a reversible temperature indicating coating.
In addition, the temperature indicating strip can be prepared according to the temperature point and the color change of the coated reversible temperature indicating coating, so that an operator can conveniently judge the specific temperature of the power distribution equipment according to the color of the coating.
The invention also provides a preparation method of the power distribution equipment, which comprises the following steps:
s101: providing a reversible color-changing material;
the preparation method of the reversible color-changing material is as described above, and is not described in detail herein.
S102: mixing the reversible color-changing material and the RTV material to prepare a reversible temperature indicating coating;
s103: and (3) coating the reversible temperature indicating coating on the power distribution equipment, and drying.
The method is simple and convenient to operate, special instruments and equipment are not needed, the prepared coating can accurately reflect the heat change of the power distribution equipment, temperature warning is carried out, and the safety of the power distribution equipment is improved.
The present invention will be described below with reference to specific examples.
Example 1
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 2, the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 50.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to room temperature, taking out the product, and grinding the product into powder in a ceramic mortar to obtain the reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 2
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 5, the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 50.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product in a ceramic mortar into powder to obtain the reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 3
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1:3, the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 50.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product in a ceramic mortar into powder to obtain the reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 4
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 4, the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 45.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 5
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 2-5, wherein the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 55.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product in a ceramic mortar into powder to obtain the reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 6
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 3.5, the reversible color-changing material consists of crystal violet lactone, bisphenol A and stearic acid; crystal violet lactone according to mass ratio: bisphenol A: stearic acid 1: 1: 50.
the preparation method comprises the following steps:
a. heating stearic acid in a beaker to 80 ℃ until the stearic acid is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 7
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 2, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 2: 50.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 8
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 5, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 2: 50.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, then adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product in a ceramic mortar into powder to obtain the reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 9
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1:3, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 2: 50.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 10
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 4, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 1: 50.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 11
The reversible temperature indicating coating of the embodiment consists of a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 2.5, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 2: 48.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Example 12
The reversible temperature indicating coating comprises a reversible color changing material and RTV, wherein the reversible color changing material comprises the following components in percentage by mass: RTV 1: 3.5, the reversible color-changing material consists of crystal violet lactone, bisphenol A and naphthalene; crystal violet lactone according to mass ratio: bisphenol A: naphthalene 1: 2: 50.
the preparation method comprises the following steps:
a. heating naphthalene in a beaker to 80 ℃ until naphthalene is completely melted, adding crystal violet lactone and bisphenol A, continuing heating and stirring for 10min, stopping heating, naturally cooling the obtained product to the temperature, taking out the product, and grinding the product into powder in a ceramic mortar; preparing a reversible color-changing material;
b. and (3) uniformly mixing the RTV and the reversible color-changing material, then coating the mixture on a shell of the power distribution equipment, and naturally drying for 48 hours.
Performance verification experiment
The power distribution devices of examples 1-12 were tested for discoloration of the coatings formed from the reversible thermochromic coating by: the temperature of the distribution equipment was gradually raised and the color of the coating was recorded at several temperature points.
And (3) testing results: the coatings of the embodiments 1 to 6 are blue at 69-77 ℃, gradually become light at about 69 ℃, and completely become white after 77 ℃, wherein the color change of the coating of the embodiment 3 is most obvious, and the quality of the coating is the best; the coatings of examples 7-12 showed blue color at 79 deg.C-82 deg.C, gradually became lighter around 79 deg.C, and completely turned white at 82 deg.C, with the color change of the coating of example 9 being most noticeable and the coating quality being the best.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A reversible color-changing material is characterized by comprising the following components: crystal violet lactone, bisphenol A and a color developing agent, wherein the color developing agent is stearic acid or naphthalene.
2. The reversible color-changing material according to claim 1, wherein the color-developer is stearic acid, and the temperature indication range of the reversible color-changing material is 69 ℃ to 77 ℃.
3. A reversible color-changing material according to claim 1 or 2, wherein the color-developer is stearic acid, and the mass ratio of the crystal violet lactone, the bisphenol a, and the color-developer is 1: (0.8-1.2) and (45-55).
4. The reversible color-changing material according to claim 1, wherein the color-developer is naphthalene, and the temperature indication range of the reversible color-changing material is 79 ℃ to 82 ℃.
5. The reversible color-changing material according to claim 1 or 4, wherein the color-developer is naphthalene, and the mass ratio of the crystal violet lactone, the bisphenol A, and the color-developer is 1: (1.5-2.2) and (45-55).
6. A method of preparing a reversible color-changing material as claimed in any one of claims 1 to 5, characterized by comprising the steps of:
and uniformly mixing the crystal violet lactone, the bisphenol A and the color developing agent to prepare the reversible color-changing material.
7. The production method according to claim 6, wherein the step of uniformly mixing the crystal violet lactone, the bisphenol A, and the color developer includes the steps of:
heating and melting the color developing agent at 50-100 ℃, adding the crystal violet lactone and the bisphenol A, uniformly mixing, cooling to below 40 ℃, and grinding to be powder.
8. The reversible temperature indicating coating is characterized by comprising the following components: a vulcanized silicone rubber and a reversible color-changing material, the reversible color-changing material being the reversible color-changing material according to any one of claims 1 to 5.
9. A reversible thermopaint as claimed in claim 8, wherein the mass ratio of the reversible color-changing material to the vulcanized silicone rubber is 1 (2-5).
10. Use of a reversible color-changing material according to any one of claims 1 to 5 or a reversible thermochromic coating according to claim 8 or 9 for the preparation of an electrical distribution device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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Cited By (8)
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| CN112111189A (en) * | 2020-08-28 | 2020-12-22 | 深圳供电局有限公司 | Preparation method of temperature indicating coating and transformer substation equipment |
| CN114181585A (en) * | 2021-12-27 | 2022-03-15 | 珠海展辰新材料股份有限公司 | Water-based fireproof coating applied to motor and preparation method thereof |
| CN114716980A (en) * | 2022-04-18 | 2022-07-08 | 桂林电子科技大学 | Reversible thermochromic functional composite phase change material and preparation method and application thereof |
| CN115746604A (en) * | 2022-11-03 | 2023-03-07 | 上海三银制漆有限公司 | Anticorrosive fluorocarbon coating capable of circularly developing color and preparation method thereof |
| CN115895418A (en) * | 2022-09-16 | 2023-04-04 | 武汉仕全兴聚氨酯科技有限公司 | Triple reversible thermochromic temperature indicating coating material, coating and preparation method thereof |
| CN115926518A (en) * | 2022-12-20 | 2023-04-07 | 国网吉林省电力有限公司电力科学研究院 | Preparation method of coating and patch for early warning and detecting thermal defect of power equipment |
| CN116285693A (en) * | 2023-04-10 | 2023-06-23 | 广东电网有限责任公司 | Reversible temperature-indicating paint and preparation method and application thereof |
| CN116426169A (en) * | 2023-04-02 | 2023-07-14 | 炫杰复合材料（上海）有限公司 | Thermal insulation coating and preparation method thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112111189A (en) * | 2020-08-28 | 2020-12-22 | 深圳供电局有限公司 | Preparation method of temperature indicating coating and transformer substation equipment |
| CN114181585A (en) * | 2021-12-27 | 2022-03-15 | 珠海展辰新材料股份有限公司 | Water-based fireproof coating applied to motor and preparation method thereof |
| CN114181585B (en) * | 2021-12-27 | 2022-10-04 | 珠海展辰新材料股份有限公司 | Water-based fireproof coating applied to motor and preparation method thereof |
| CN114716980A (en) * | 2022-04-18 | 2022-07-08 | 桂林电子科技大学 | Reversible thermochromic functional composite phase change material and preparation method and application thereof |
| CN115895418A (en) * | 2022-09-16 | 2023-04-04 | 武汉仕全兴聚氨酯科技有限公司 | Triple reversible thermochromic temperature indicating coating material, coating and preparation method thereof |
| CN115746604A (en) * | 2022-11-03 | 2023-03-07 | 上海三银制漆有限公司 | Anticorrosive fluorocarbon coating capable of circularly developing color and preparation method thereof |
| CN115926518A (en) * | 2022-12-20 | 2023-04-07 | 国网吉林省电力有限公司电力科学研究院 | Preparation method of coating and patch for early warning and detecting thermal defect of power equipment |
| CN115926518B (en) * | 2022-12-20 | 2024-02-02 | 国网吉林省电力有限公司电力科学研究院 | Preparation method of power equipment heating defect early warning detection coating and patch |
| CN116426169A (en) * | 2023-04-02 | 2023-07-14 | 炫杰复合材料（上海）有限公司 | Thermal insulation coating and preparation method thereof |
| CN116285693A (en) * | 2023-04-10 | 2023-06-23 | 广东电网有限责任公司 | Reversible temperature-indicating paint and preparation method and application thereof |
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