CN110982324A - Crushing method of structured color pigment and structured color pigment - Google Patents
Crushing method of structured color pigment and structured color pigment Download PDFInfo
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- CN110982324A CN110982324A CN201911128306.4A CN201911128306A CN110982324A CN 110982324 A CN110982324 A CN 110982324A CN 201911128306 A CN201911128306 A CN 201911128306A CN 110982324 A CN110982324 A CN 110982324A
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- structural color
- protective material
- color pigment
- color film
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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
- C09D5/22—Luminous paints
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
The application discloses crushing method of structure color pigment and structure color pigment, and the crushing method of structure color pigment comprises the following steps: coating a layer of protective material on the surface of the structural color film; crushing the structural color film coated with the protective material to obtain a structural color pigment coated with the protective material; and removing the protective material on the surface of the structural color pigment. The structural color pigment is obtained by coating a protective material on the surface of the structural color film to protect the structural color film, grinding or crushing the structural color film to reach a preset particle size, and removing the protective material coated on the surface of the structural color pigment.
Description
Technical Field
The application belongs to the technical field of luminous pigments, and particularly relates to a crushing method of a structural color pigment and the structural color pigment.
Background
With the widespread use of nanotechnology, various fields have begun to use optical material films made of high refractive index optical film layers and low refractive index optical film layers alternately laminated. When light rays enter the high refractive index optical film layer and the low refractive index optical film layer, a plurality of times of refraction and reflection occur. Therefore, the transmission direction of the light is changed, and the interference of the light is formed, and the required color can be realized through design.
However, in the process of preparing the structured color pigment by pulverizing the optical material film, the structure of the structured color pigment is easily destroyed or abraded, resulting in graying of the color of the structured color pigment.
Disclosure of Invention
The application provides a crushing method of a structural color pigment and the structural color pigment, and aims to solve the technical problem that the color of the structural color pigment is grayed due to the fact that the structure of the structural color pigment is easily damaged or abraded by a traditional crushing method.
In order to solve the technical problem, the application adopts a technical scheme that: a method of pulverizing a structured color pigment, comprising: coating a layer of protective material on the surface of the structural color film; crushing the structural color film coated with the protective material to obtain a structural color pigment coated with the protective material; and removing the protective material on the surface of the structural color pigment.
According to an embodiment of the present application, the coating of a layer of protective material on the surface of the structural color film includes: and heating and melting the protective material, adding the protective material into the structural color film, stirring, and cooling to coat a layer of the protective material on the surface of the structural color film.
According to an embodiment of the application, the weight of the protective material is greater than or equal to one third of the weight of the structural color film.
According to an embodiment of the present application, the shattering of the structural color film coated with the protective material includes: scattering the structural color film coated with the protective material; and crushing the scattered structural color film to enable the structural color film to reach a preset particle size.
According to an embodiment of the present application, the removing the protective material on the surface of the structural color pigment includes: and (3) putting the structural color pigment coated with the protective material into an organic solvent, stirring, precipitating and filtering.
According to an embodiment of the present application, before stirring and precipitating the structural color pigment, the method further comprises: and heating the structural color pigment put into the organic solvent in a water bath.
According to an embodiment of the present application, the removing the protective material from the surface of the structural color pigment further comprises: and drying and filtering to obtain the structural color pigment, wherein the drying temperature is 50-250 ℃.
According to an embodiment of the application, the protective material is a meltable and/or soluble organic material.
According to an embodiment of the present application, the protective material comprises an organic resin, a wax or a solid alcohol.
In order to solve the above technical problem, another technical solution adopted by the present application is: a structural color pigment obtained by crushing by the method of any one of the above.
The beneficial effect of this application is: according to the method, the surface of the structural color film is coated with the protective material to protect the structural color film, the structural color film is ground or crushed, the protective material coated on the surface of the structural color pigment is removed after the predetermined particle size is reached, and the structural color pigment can be obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic flow diagram of one embodiment of a method for comminuting a structured color pigment according to the present application;
fig. 2 is a schematic structural view of a structural color film in an example of the structural color pigment pulverization method of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic flow chart of an embodiment of a method for pulverizing a structural color pigment according to the present application.
An embodiment of the application provides a method for crushing a structural color pigment, which comprises the following steps:
s101: and coating a layer of protective material on the surface of the structural color film.
And a layer of protective material is coated on the surface of the structural color film, so that the structural color film is protected. Specifically, the protective material can be heated and melted, and added into the structural color film, and stirred, so that the surface of each structural color film is coated with a layer of protective material.
The protective material may be a meltable and/or soluble organic material, such as an organic resin, wax, or solid alcohol, among others. The organic resin may be a PVC (polyvinyl chloride) resin, an ABS (acrylonitrile-butadiene-styrene copolymer) resin, or other resins. The wax may be paraffin wax, Fischer-Tropsch wax, PE wax, PP wax, microcrystalline wax. The solid alcohol may be polyethylene glycol. In the embodiment, stearic acid is adopted, heated to 60-70 ℃ to be melted, and then added into the structural color film. It should be noted that the melting point of the fusible protective material used should not be too high, and should be lower than the melting point of the material in the structural color film. In some embodiments, the protective material may be used alone, and in other embodiments, two or more protective materials may be used in combination, which is not limited herein.
The weight of the protective material added to the structural color film needs to be greater than or equal to one third of the weight of the structural color film. Therefore, the surface of each structural color film can be coated with a layer of protective material, and the protective material cannot be excessive, so that the mutual agglomeration between the structural color films coated with the protective material is reduced, and the subsequent efficiency of crushing the structural color films is improved.
In other embodiments, the protective material may be sprayed or coated on the surface of the structural color film, so that the surface of the structural color film is coated with a layer of protective material, and the structural color films are not easily adhered to each other.
S102: and crushing the structural color film coated with the protective material to obtain the structural color pigment coated with the protective material.
And crushing the structural color film coated with the protective material to obtain the structural color pigment coated with the protective material. Because the surface of the structural color film is coated with the protective material, the protective material can protect the structural color film when being crushed, and reduce the abrasion of the surface of the structural color film and the damage of the structure, thereby the crushed structural color pigment has smooth surface, high brightness and bright color.
In some embodiments, comminuting the structural color film coated with the protective material comprises:
and (3) scattering the structural color film coated with the protective material, and then crushing the scattered structural color film to enable the structural color film to reach a preset particle size, so as to obtain the structural color pigment coated with the protective material, wherein the particle sizes of the structural color pigment are consistent. Because the protective material is added into the structural color film for mixing, and the protective material is coated on the surface of the structural color film and then the structural color film is easy to bond with the clusters, the clustered structural color film needs to be ground by a ball mill, scattered into a small cluster structure, and rolled except the ball mill. The diameter of the scattered structural color film is 2-3 mm, such as 2mm, 2.5mm or 3mm, which is not limited herein. The scattered structural color film can be crushed by a jet mill to crush the structural color film to a preset particle size, the jet mill has high crushing efficiency, and the structural damage to the structural color film is small. The predetermined particle size depends on the actual requirements of the structured color pigment, and the structured color film is usually pulverized to 8 to 12 μm, for example, 8 μm, 10 μm or 12 μm. Of course, in other embodiments, a ball mill may also be used to directly crush the structural color film to a predetermined particle size.
S103: and removing the protective material on the surface of the structural color pigment.
And removing the protective material on the surface of the structural color pigment, so that the obtained structural color pigment is smooth in surface, high in brightness and bright in color because the structural color pigment is protected by the protective material during crushing.
The protective material for removing the surface of the structural color pigment comprises: and (3) putting the structural color pigment coated with the protective material into an organic solvent, stirring, precipitating and filtering. The protective material is dissolved in the organic solvent, the structural color pigment is precipitated, the protective material can be fully dissolved by stirring, and the structural color pigment is filtered, so that the crushed structural color pigment can be obtained. Wherein, the organic solvent can adopt absolute ethyl alcohol or glycerol, etc.
In some embodiments, before stirring and precipitating the structural color pigment, the method further comprises heating the structural color pigment in the organic solvent in a water bath, wherein the heating can accelerate the dissolution of the protective material and improve the production efficiency, and the temperature of the water bath heating is within the melting point range of the protective material.
Further, the removing the protective material on the surface of the structural color pigment further comprises: the structural color pigment obtained after drying and filtering is dried at a temperature of 50 ℃ to 250 ℃, for example, 50 ℃, 95 ℃, 100 ℃, 145 ℃, 150 ℃ or 250 ℃, and is not limited herein. Drying can accelerate the drying of the structural color pigment and improve the production efficiency.
Different from the situation of the prior art, the structural color film is protected by coating a protective material on the surface of the structural color film, the structural color film is ground or crushed to reach a preset particle size, and then the protective material coated on the surface of the structural color pigment is removed, so that the structural color pigment can be obtained.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a structural color film in an embodiment of a structural color pigment pulverizing method of the present application.
Except that the crushing method of the application enables the structural color pigment to have high brightness and bright color, the structural color film 10 adopted in the application also has the advantages of low cost and high brightness. The structural color film 10 in an embodiment of the present application includes an intermediate layer 11, and first refractive index optical film layers L1, L2 and second refractive index optical film layers H1, H2 alternately stacked on both sides of the intermediate layer 11, wherein the first refractive index is smaller than the second refractive index. Wherein the refractive index of the material of the intermediate layer 11 is greater than the first refractive index. The outer surfaces 12, 13 of the first refractive index optical film layers L1, L2 are provided with second refractive index optical film layers H1, H2.
Specifically, the first refractive-index optical film layers L1 and L2 are made of a low-refractive-index optical material, and the second refractive-index optical film layers H1 and H2 are made of a high-refractive-index optical material. Wherein the high refractive index optical material may be an optical material having a refractive index of 2.3 or more. The low index optical material may be an optical material having a refractive index of less than or equal to 1.6. The difference between the refractive indexes of the second refractive index optical film layers H1 and H2 and the refractive indexes of the first refractive index optical film layers L1 and L2 is greater than or equal to 0.7.
The structural color film 10 may have a structure in which layers of first refractive index optical film layers L1, L2 and second refractive index optical film layers H1, H2 are alternately deposited, that is, the structural color film 10 may include a second refractive index optical film layer H1, a first refractive index optical film layer L1, an intermediate layer 11, a first refractive index optical film layer L2, and a second refractive index optical film layer H2, which are sequentially stacked. The refractive index of the material of the intermediate layer 11 is greater than the first refractive index, that is, the material of the intermediate layer 11 may be an optical material with a refractive index greater than 1.6, and preferably, the high-refractive-index optical material used for the intermediate layer 11 may be the same as the material of the second-refractive-index optical film layers H1 and H2.
The total number of layers of the structural color film 10 is greater than or equal to 5, and the total number of layers is an odd number, for example, 5 layers, 9 layers, and 13 layers. For example, the structural color film 10 may be made of five optical film layers, in order of the second refractive index optical film layer H1-the first refractive index optical film layer L1-the second refractive index optical film layer H (intermediate layer 11) -the first refractive index optical film layer L2-the second refractive index optical film layer H2. Or the structural color film 10 may be made of nine optical film layers, in order of the second refractive index optical film layer-the first refractive index optical film layer-the second refractive index optical film layer (intermediate layer) -the first refractive index optical film layer-the second refractive index optical film layer.
Wherein the optical thickness of each second refractive index optical film layer H1, H2 and the optical thickness of each first refractive index optical film layer L1, L2 is 20 nm-1000 nm, for example, 20 nm, 50 nm, 100 nm, 500 nm, 1000 nm.
By adopting a high-refractive-index optical material as the material of the intermediate layer 11, and meanwhile, the outer surfaces 12 and 13 of the first refractive-index optical film layers L1 and L2 are provided with the second refractive-index optical film layers H1 and H2, the higher the refractive indexes of the second refractive-index optical film layers H1 and H2 are, the more favorable the reflection effect of visible light is increased, and the brightness of the pigment can be increased. Therefore, the present embodiment can provide the structural color film 10 with a simple structure and excellent reflection performance on the basis of cheap optical materials and less total film layers of the optical film, thereby reducing the manufacturing cost and simplifying the manufacturing process.
In one embodiment, the material of the second refractive index optical film layers H1 and H2 may include at least one of titanium dioxide, tantalum pentoxide, niobium pentoxide, zinc sulfide, or zirconium dioxide. The material of the first refractive index optical film layers L1, L2 may include at least one of silicon monoxide, silicon dioxide, or magnesium fluoride.
In an embodiment, the material of the second refractive index optical film layers H1, H2 may be zinc sulfide, and the material of the first refractive index optical film layers L1, L2 may be magnesium fluoride.
Another embodiment of the present application provides a structured color pigment obtained by pulverizing the pigment according to any of the above embodiments.
The structured color pigment in the present application is a fragment of the above structured color film. The structural color pigment is obtained by coating a protective material on the surface of the structural color film to protect the structural color film, grinding or crushing the structural color film, and removing the protective material coated on the surface of the structural color pigment after the particle size reaches a preset value.
The structural color pigment can be prepared into a coating, and specifically, the structural color pigment and the viscous solution are physically mixed according to a preset mass ratio and uniformly stirred, so that the coating formed by the structural color pigment can be obtained.
The viscous solution is a material with certain viscosity, and optical epoxy glue is generally adopted. The mass percentage of the structural color pigment is 3-70%, for example, 3%, 5%, 20%, 30%, 40%, 50%, 60%, 70%, which can ensure the performance of the structural color pigment formed into a coating layer to be consistent with the design. The structural color pigment is brushed, sprayed or hot-pressed on a target surface and cured, the high-brightness pigment forms a coating on the target surface, and the coating is coated with a structural color film on the target surface and has a high color development effect.
It is noted that the structural color pigment may be a color-changing pigment or a non-color-changing pigment. The color change characteristics of the structured color pigment can be controlled by appropriate design of the structured color film used to make the high brightness pigment. The color change at a certain angle depends on the combined refractive index at the optical film layer. By changing relevant parameters such as the thickness of each film layer of the structural color film and the refractive index of each film layer, the required effect can be obtained. The color change that occurs at different viewing or incidence angles is a result of the combination of selective absorption and wavelength dependent interference effects of the materials of the layers. The interference effect resulting from the superposition of multiple reflected light waves is a major factor in the occurrence of color changes at different angles.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (10)
1. A method for pulverizing a structured color pigment, comprising:
coating a layer of protective material on the surface of the structural color film;
crushing the structural color film coated with the protective material to obtain a structural color pigment coated with the protective material;
and removing the protective material on the surface of the structural color pigment.
2. The method of claim 1, wherein coating the surface of the structural color film with a layer of protective material comprises:
and heating and melting the protective material, adding the protective material into the structural color film, stirring, and cooling to coat a layer of the protective material on the surface of the structural color film.
3. The method of claim 2, wherein the protective material has a weight greater than or equal to one-third of the weight of the structural color film.
4. The method of claim 1, wherein said comminuting the structural color film coated with the protective material comprises:
scattering the structural color film coated with the protective material;
and crushing the scattered structural color film to enable the structural color film to reach a preset particle size.
5. The method of claim 1, wherein the removing the protective material from the surface of the structural color pigment comprises:
and (3) putting the structural color pigment coated with the protective material into an organic solvent, stirring, precipitating and filtering.
6. The method of claim 5, further comprising, prior to agitating to precipitate the structured color pigment: and heating the structural color pigment put into the organic solvent in a water bath.
7. The method of claim 5, wherein the removing the protective material from the surface of the structural color pigment further comprises:
and drying and filtering to obtain the structural color pigment, wherein the drying temperature is 50-250 ℃.
8. The method according to claim 1, characterized in that the protective material is a meltable and/or soluble organic material.
9. The method of claim 1, wherein the protective material comprises an organic resin, a wax, or a solid alcohol.
10. A structured color pigment obtained by pulverization according to the method of any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911128306.4A CN110982324A (en) | 2019-11-18 | 2019-11-18 | Crushing method of structured color pigment and structured color pigment |
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| CN201911128306.4A CN110982324A (en) | 2019-11-18 | 2019-11-18 | Crushing method of structured color pigment and structured color pigment |
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| CN110982324A true CN110982324A (en) | 2020-04-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113105773A (en) * | 2021-04-15 | 2021-07-13 | 哈尔滨工业大学（深圳） | Three-dimensional photonic crystal structure color toner and preparation method thereof |
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| US20120153056A1 (en) * | 2010-12-15 | 2012-06-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Production of multilayered thin film particles |
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- 2019-11-18 CN CN201911128306.4A patent/CN110982324A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20120153056A1 (en) * | 2010-12-15 | 2012-06-21 | Toyota Motor Engineering & Manufacturing North America, Inc. | Production of multilayered thin film particles |
Non-Patent Citations (1)
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| 徐斌等: ""新型纳米铜/石蜡/PVP 温敏复合材料的制备及其性能"", 《传感技术学报》 * |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113105773A (en) * | 2021-04-15 | 2021-07-13 | 哈尔滨工业大学（深圳） | Three-dimensional photonic crystal structure color toner and preparation method thereof |
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