CN111923325A - Integrated surface color-changing structural part and manufacturing method thereof - Google Patents

Integrated surface color-changing structural part and manufacturing method thereof Download PDF

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Publication number
CN111923325A
CN111923325A CN202010719676.1A CN202010719676A CN111923325A CN 111923325 A CN111923325 A CN 111923325A CN 202010719676 A CN202010719676 A CN 202010719676A CN 111923325 A CN111923325 A CN 111923325A
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layer
film
color
integrated
adhesive layer
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Inventor
方超
孙金生
蒙日亮
梁成
陈永炳
赵欢
赵小霞
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Dongfeng Liuzhou Motor Co Ltd
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Dongfeng Liuzhou Motor Co Ltd
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Priority to CN202010719676.1A priority Critical patent/CN111923325A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/14467—Joining articles or parts of a single article
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
    • B29C45/14221—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure by tools, e.g. cutting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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    • B32B27/00—Layered products comprising a layer of synthetic resin
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/04—Modelling plastic materials, e.g. clay
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B29C2045/1486—Details, accessories and auxiliary operations
    • B29C2045/14868—Pretreatment of the insert, e.g. etching, cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/02—Synthetic macromolecular particles
    • B32B2264/0214—Particles made of materials belonging to B32B27/00
    • B32B2264/0228—Vinyl resin particles, e.g. polyvinyl acetate, polyvinyl alcohol polymers or ethylene-vinyl acetate copolymers
    • B32B2264/0235—Aromatic vinyl resin, e.g. styrenic (co)polymers
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/12—Mixture of at least two particles made of different materials
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    • B32—LAYERED PRODUCTS
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/404—Multi-coloured

Abstract

The invention discloses an integrated surface color-changing structural member which comprises a surface film and a plastic matrix which are integrated into an integrated structure, wherein the surface film comprises an IMD film, a first adhesion layer, a nanostructure layer and a receiving layer which are sequentially arranged from top to bottom. The surface film has the color changing function caused by the structural color, has rich color changing capability, can see different colors at different visual angles, does not need to consume electric energy in the color changing process, is energy-saving and environment-friendly, has low production cost, is easy to manufacture, does not occupy space, has wide application range, can be solidified with various plastic products into a whole by IMD technology to form the integrated surface color changing structural part, endows the surface of the plastic products with the color changing function, and improves the grade of the plastic products.

Description

Integrated surface color-changing structural part and manufacturing method thereof
Technical Field
The invention belongs to the technical field of surface decoration, and particularly relates to an integrated surface color-changing structural member and a manufacturing method thereof.
Background
Among emerging materials, plastic materials are widely used due to their excellent processing and use properties. In order to enhance and change the appearance texture of plastic products, the surface of a plastic part needs to be decorated by means of a surface decoration process, which has a remarkable effect on improving the product grade and is adopted by middle-high grade consumer electronics and automobile parts. The traditional surface decoration process comprises screen printing, spraying, electroplating and the like, the processes can be completed only by secondary processing after a plastic part is taken out of a mold cavity, and the processes have many defects and limitations, such as high product processing reject ratio, long production period, environmental pollution and the like.
With the development of information technology, In-Mold Decoration (IMD) technology capable of integrated injection molding has attracted more and more attention. The IMD technology is a technology that a printed and molded decorative film is placed in an injection mold, then plastic is injected on the back of the decorative film, and the plastic and a thin film are simultaneously cured and molded. IMD technique can make the product reach decorative and functional in effect of an organic whole, has that the production effect is high, and the cost of labor is low to and the durability and the complexity of printing pattern can promote advantage such as by a wide margin, thereby obtain masses' favor. Another type of color that has an effect on the appearance and quality of the vehicle is a variable color, and nowadays, various color atmosphere lamp products are mainly used for the color change of the vehicle, and different colors are presented by controlling the colors of the atmosphere lamps.
The apparent texture of the existing product obtained by the IMD process is determined by the IMD membrane, the existing IMD membrane generally consists of a thin film layer, a graphic layer and an adhesive layer, and the color of the graphic layer is fixed and unchangeable, so that the surface color of the product is fixed and the color change effect cannot be generated. Although the atmosphere lamp can change color, the atmosphere lamp usually comprises parts such as a light guide strip, a light guide strip mounting bracket, a light guide mounting seat and the like, is complex in structure, is mounted in a relatively hidden area, and can only play an auxiliary role. In addition, the atmosphere lamp plays a role in color change under the condition of power consumption, the opaque ornament cannot play a role in color change because the ornament cannot penetrate through the opaque ornament, the color change type is fixed, and the color change richness is low. In addition, the prior atmosphere lamp and IMD technology are independent, and the atmosphere lamp and the IMD technology are combined with each other by installing the atmosphere lamp at the back part of the IMD product and realizing the color change of the surface of the IMD product through the color change of the atmosphere lamp.
Disclosure of Invention
In order to overcome the defects and shortcomings in the prior art, the invention aims to provide an integrated surface color-changing structural member and a manufacturing method thereof. The integrated surface color-changing structural member is based on the color-changing effect caused by structural color, does not need to consume electric energy, is energy-saving and environment-friendly, and has wide application range.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the integrated surface color-changing structural member comprises a surface film and a plastic matrix which are integrated into an integrated structure, wherein the surface film comprises an IMD film, a first adhesion layer, a nanostructure layer and a receiving layer which are sequentially arranged from top to bottom.
Preferably, the IMD thin film includes a PC film, a PET film, or a PMMA film. After the membrane materials are treated by the IMD technology, the surface hardness of the membrane materials can reach 2-3H.
Preferably, the nanostructure layer is a single-layer structure formed by transparent nanoparticle particles. Preferably, the nanoparticulate particles comprise organic particles and/or inorganic particles. Preferably, the organic particles include, but are not limited to, nano PS (polystyrene) particles, nano PMMA (polymethylmethacrylate) particles, and the like. Preferably, the inorganic particles include, but are not limited to, nano-SiO2Particles, nano calcium silicate particles, and the like.
Preferably, the particle size of the nano microsphere particles is 500 nm-50 um. The nano-structure layer formed by the nano-microsphere particles with the particle size range has better color change effect.
Preferably, the receiving layer is composed of at least one of a high temperature resistant material layer, a pattern layer and a TP circuit layer; the high-temperature resistant material layer is made of high-temperature resistant materials such as PC, PET or PDMS. In fact, receiving layers with different functions can be used according to the design requirements of the surface or function of the product.
Preferably, a second adhesion layer is arranged between the receiving layer and the nanostructure layer.
Preferably, the first adhesive layer and the second adhesive layer are respectively formed by transparent adhesives, and preferably, an aqueous polyurethane adhesive or a polyacrylic adhesive is adopted.
Preferably, the thicknesses of the first adhesive layer and the second adhesive layer are respectively smaller than the particle size of the nano-microsphere particles.
Preferably, the thickness of the first adhesion layer is 0.48-0.65 times of the particle size of the nanoparticle. The relation between the thickness of the first adhesion layer and the particle size of the nano microsphere particles can influence the structural color changing effect of the structural member and influence the color changing effect at different angles. The parameters of the invention are set, so that the structural member with better color change effect can be obtained.
Preferably, the thickness of the second adhesive layer is not more than 0.3 times the particle size of the nanoparticle. The key for ensuring the nanostructure layer to generate structural color is to prevent the first adhesive layer from being bonded with the second adhesive layer, so the thickness of the second adhesive layer needs to be well controlled, and the smaller the thickness of the second adhesive layer is, the better the adhesion requirement is. When the thickness of the second adhesive layer is not more than 0.3 times of the grain diameter of the nano microsphere grains, the first adhesive layer can be ensured not to be adhered with the second adhesive layer.
In the invention, the plastic substrate is actually a plastic product needing surface decoration, and is solidified with the surface film into a whole through IMD technology. The surface of the plastic substrate can be designed with patterns or/and colors as required, and transparent or opaque plastics can be adopted.
The invention also provides a manufacturing method of the integrated surface color-changing structural member, which comprises the following steps:
(1) preparing a single-layer nanostructure layer by deposition of nano microsphere particles;
(2) coating an adhesive on the back surface of the IMD film to form a first adhesive layer;
(3) the IMD film is adhered with the nanostructure layer through the first adhesion layer and is solidified into a whole through UV;
(4) coating an adhesive on the receiving layer to form a second adhesive layer;
(5) bonding the receiving layer and the integrated structure prepared in the step (3) through a second adhesive layer, and curing the receiving layer and the integrated structure into a whole through UV (ultraviolet) to obtain a surface film prefabricated product;
(6) performing thermoforming on the surface film prefabricated product, and trimming leftover materials to obtain a surface film;
(7) and (3) putting the surface film into a mold cavity of an injection molding machine, and bonding and solidifying the surface film and the plastic matrix into a whole by an IMD (in-mold decoration) injection molding technology to obtain the integrated surface color-changing structural part.
Preferably, in the step (7), the injection molding temperature is 230-240 ℃, the injection molding pressure is 70-75 Pa, and the injection molding speed is 30-40 cm3And/s, the temperature of the mold during injection molding is 75-85 ℃.
The invention adopts the existing colloid self-assembly method to prepare the nanostructure layer with a single-layer structure, such as:
the method comprises the following steps: fixing a PDMS substrate, paving a layer of nano-microsphere particles on the substrate and completely covering, covering a PDMS plate on the substrate, and providing 0.5-3.0 gf/cm by using the PDMS plate with corresponding weight2A range of pressures, and then attaching the upper PDMS slab to a device that can be pulled. The device enables the upper PDMS plate to move back and forth directionally, the distance of each directional movement is at least 4cm, the back and forth times are 3-30 times, the stretching speed is 0.4-4.5 mm/s, and therefore a single-layer nano microsphere self-assembly structure, namely the nano structure layer, can be obtained on the lower PDMS substrate. In order to obtain an optimal monolayer self-assembled structure, in the method, the pressure provided by the upper PDMS plate is 1.25gf/cm2The moving distance was 4cm, the number of times of back and forth was 10, and the stretching rate was 3.5 mm/s.
The second method comprises the following steps: dispersing the nano microsphere particles in water at 24-30 ℃ to form a suspension, adding alkali liquor into the suspension, stirring uniformly, then sucking the suspension by using an injector, adjusting an included angle formed between the injector and the water surface to be 50-70 degrees, preferably 60 degrees, and then injecting the nano microsphere particles into an interface between water and air by using a micro-injection method to form a suspended single-layer film consisting of the nano microsphere particles on the water surface. And when the suspended single-layer film is not expanded on the water surface any more, transferring the suspended single-layer film onto the substrate by draining or improving the underwater PDMS substrate, and drying for 24 hours at the temperature of 60 ℃ to remove the solvent, thus obtaining the nano-structure layer. The alkali liquor can adopt at least one of NaOH, KOH and ammonia water. The mass fraction of the suspension is 0.01-0.03%, preferably 0.02%.
The color change mechanism of the integrated surface color change structural member is as follows: when light irradiates the IMD film, because the IMD film and the first adhesive layer are both transparent, the light can penetrate through the IMD film and the first adhesive layer and further reach the nanostructure layer. When the light reaches the nanostructure layer, the light can generate film interference and total internal reverse color effect on the hemisphere interface of the nanoparticle of the nanostructure layer, so as to generate structural color and reflection effect, and different reflection colors can be generated by changing the particle size of the nanoparticle and the thickness of the adhesion layer. Because the nanostructure layer and the second adhesive layer are transparent layers, part of light can penetrate through the nanostructure layer and the second adhesive layer to reach the receiving layer, so that the color, the pattern or other decorative structures and the like of the surface of the receiving layer are displayed.
Compared with the prior art, the invention has the beneficial effects that: the surface film has the color changing function caused by the structural color, has rich color changing capability, can see different colors at different visual angles, does not need to consume electric energy in the color changing process, is energy-saving and environment-friendly, has low production cost, is easy to manufacture, does not occupy space, has wide application range, can be solidified with various plastic products into a whole by the IMD technology to form the integrated surface color changing structural part, endows the surface of the plastic products with the color changing function, and improves the grade of the plastic products.
Drawings
Fig. 1 is a schematic structural diagram of a longitudinal section of the integrated surface color-changing structural member of the present invention.
In the figure, a surface film 1, a plastic substrate 2, an IMD film 3, a first adhesive layer 4, a nanostructure layer 5, a second adhesive layer 6 and a receiving layer 7.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention. The starting materials used in the examples are commercially available and the procedures used are conventional in the art unless otherwise specified.
As shown in fig. 1, the integrated surface-discoloring structure provided in this embodiment is composed of a surface film 1 and a plastic substrate 2 which are integrally cured. The surface film 1 is composed of an IMD film 3, a first adhesion layer 4, a nanostructure layer 5, a second adhesion layer 6 and a receiving layer 7 which are sequentially arranged from top to bottom, wherein the IMD film 3 is a PC film, a PET film or a PMMA film. The nano-structure layer 5 is a single-layer structure formed by transparent nano-microsphere particles with the particle size of 500 nm-50 um, the nano-microsphere particles are organic particles and/or inorganic particles, the organic particles are nano-PS particles or nano-PMMA particles and the like, and the inorganic particles are nano-SiO2Particulate or nano calcium silicate particles, and the like. The receiving layer 7 is a high temperature resistant material layer (PC, PET, PDMS, or the like), a pattern layer, a TP circuit layer, or the like, and may actually be a receiving layer having different functions according to the design requirements of the surface or function of the product. The first adhesive layer 4 and the second adhesive layer 6 are respectively formed by a transparent waterborne polyurethane adhesive or a polyacrylic acid adhesive, the thickness of the first adhesive layer 4 is 0.48-0.65 times of the particle size of the nano microsphere particles, and the thickness of the second adhesive layer 6 is not more than 0.3 times of the particle size of the nano microsphere particles.
The manufacturing method of the integrated surface color-changing structural member comprises the following steps:
(1) preparing the nanostructure layer 5: the PDMS substrate was fixed, and then a layer of nano-microsphere particles was spread on the substrate and completely covered, and then a PDMS plate was covered on the upper side, to provide 1.25gf/cm by using a corresponding weight of the PDMS plate2A range of pressures, and then attaching the upper PDMS slab to a device that can be pulled. The upper PDMS plate is directionally moved back and forth through the device, the distance of each directional movement is 4cm, the number of times of the back and forth movement is 10 times, the stretching speed is 3.5mm/s, and therefore a single-layer nano microsphere self-assembly structure, namely a nano structure layer, can be obtained on the lower PDMS substrate;
(2) coating an adhesive on the back surface of the IMD film 3 to form a first adhesive layer 4;
(3) the IMD film 3 is bonded with the nanostructure layer 5 through the first adhesive layer 4 and is solidified into a whole through UV (ultraviolet);
(4) coating an adhesive on the receiving layer 7 to form a second adhesive layer 6;
(5) removing the PDMS substrate used for supporting the nanostructure layer 5, then adhering the receiving layer 7 and the integrated structure prepared in the step (3) through the second adhesive layer 6, and curing the integrated structure into a whole through UV (ultraviolet) to obtain a surface thin film prefabricated product;
(6) performing thermoforming and punching trimming on the surface film prefabricated product to trim leftover materials to obtain a surface film 1;
(7) placing the surface film 1 into a mold cavity of an injection molding machine, and bonding and solidifying the surface film 1 and the plastic matrix 2 into a whole by an IMD (in-mold decoration) injection molding technology to obtain an integrated surface color-changing structural member; the injection molding temperature is 230-240 ℃, the injection molding pressure is 70-75 Pa, and the injection molding speed is 30-40 cm3And/s, the temperature of the mold during injection molding is 75-85 ℃.
The color change mechanism of the integrated surface color change structural member is as follows: when light is irradiated onto the IMD film, since the IMD film 3 and the first adhesive layer 4 are transparent, light passes through the IMD film 3 and the first adhesive layer 4 to reach the nanostructure layer 5. When the light reaches the nanostructure layer 5, the light generates thin film interference and total internal reflection effect on the hemispherical interface of the nanoparticle of the nanostructure layer 5, thereby generating structural color and reflection effect, and different reflection colors can be generated by changing the particle size of the nanoparticle and the thickness of the adhesive layer. Since the nanostructure layer 5 and the second adhesive layer 6 are transparent layers, part of the light can reach the receiving layer 7 through the nanostructure layer 5 and the second adhesive layer 6, so as to display the color, pattern or other decorative structure on the surface of the receiving layer 7.
Therefore, the surface film of the embodiment changes color due to structural color, the color change capability is rich, different colors can be seen at different visual angles, electric energy is not consumed in the color change process, the integrated surface color change structural member is energy-saving and environment-friendly, is low in production cost, easy to manufacture, free of space occupation and wide in application range, can be integrally cured with various plastic products through the IMD technology, and is endowed with the surface color change function of the plastic products, and the grade of the plastic products is improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. The integrated surface color-changing structural member is characterized by comprising a surface film and a plastic matrix which are integrated into an integrated structure, wherein the surface film comprises an IMD film, a first adhesion layer, a nanostructure layer and a receiving layer which are sequentially arranged from top to bottom; the nano-structure layer is a single-layer structure formed by transparent nano-microsphere particles, and the first adhesion layer is a transparent layer.
2. The integrated surface color changing structure of claim 1 wherein the IMD film comprises a PC film, a PET film, or a PMMA film.
3. The integrated surface-color-changing structural member of claim 1, wherein the nano-microsphere particles comprise organic particles and/or inorganic particles, and the particle size of the nano-microsphere particles is 500nm to 50 um.
4. The integrated surface color changing structure of claim 1 wherein the receiving layer is comprised of at least one of a high temperature resistant material layer, a pattern layer, and a TP circuit layer.
5. The integrated surface-color-changing structure of claim 1, wherein a second adhesive layer is disposed between the receiving layer and the nanostructure layer.
6. The integrated surface color changing structure of claim 5 wherein the first adhesive layer and the second adhesive layer are each formed of a transparent adhesive.
7. The integrated surface-color-changing structure of claim 5, wherein the thicknesses of the first adhesive layer and the second adhesive layer are respectively smaller than the particle size of the nano-microsphere particles.
8. The integrated surface-discoloration structure according to claim 1, wherein said first adhesive layer has a thickness of 0.48 to 0.65 times the particle size of said nanoparticle.
9. The integrated surface-color-changing structure of claim 5, wherein the thickness of the second adhesive layer is not more than 0.3 times the particle size of the nanoparticle.
10. The method for manufacturing an integrated surface color-changing structural member according to any one of claims 1 to 9, comprising the steps of:
(1) preparing a single-layer nanostructure layer by deposition of nano microsphere particles;
(2) coating an adhesive on the back surface of the IMD film to form a first adhesive layer;
(3) the IMD film is adhered with the nanostructure layer through the first adhesion layer and is solidified into a whole through UV;
(4) coating an adhesive on the receiving layer to form a second adhesive layer;
(5) bonding the receiving layer and the integrated structure prepared in the step (3) through a second adhesive layer, and curing the receiving layer and the integrated structure into a whole through UV (ultraviolet) to obtain a surface film prefabricated product;
(6) performing thermoforming on the surface film prefabricated product, and trimming leftover materials to obtain a surface film;
(7) and (3) putting the surface film into a mold cavity of an injection molding machine, and bonding and solidifying the surface film and the plastic matrix into a whole by an IMD (in-mold decoration) injection molding technology to obtain the integrated surface color-changing structural part.
CN202010719676.1A 2020-07-23 2020-07-23 Integrated surface color-changing structural part and manufacturing method thereof Pending CN111923325A (en)

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CN105949379A (en) * 2016-05-18 2016-09-21 珠海光驭科技有限公司 Nanoparticle, surface optical material and preparation method of surface optical material
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Application publication date: 20201113