CN111455676A - Preparation method of bionic photonic crystal structure chromogenic textile - Google Patents
Preparation method of bionic photonic crystal structure chromogenic textile Download PDFInfo
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- CN111455676A CN111455676A CN201910049478.6A CN201910049478A CN111455676A CN 111455676 A CN111455676 A CN 111455676A CN 201910049478 A CN201910049478 A CN 201910049478A CN 111455676 A CN111455676 A CN 111455676A
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Images
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D06N3/042—Acrylic polymers
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0036—Polyester fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
- D06N3/0038—Polyolefin fibres
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0059—Organic ingredients with special effects, e.g. oil- or water-repellent, antimicrobial, flame-resistant, magnetic, bactericidal, odour-influencing agents; perfumes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0056—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the compounding ingredients of the macro-molecular coating
- D06N3/0063—Inorganic compounding ingredients, e.g. metals, carbon fibres, Na2CO3, metal layers; Post-treatment with inorganic compounds
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
- D06N3/0077—Embossing; Pressing of the surface; Tumbling and crumbling; Cracking; Cooling; Heating, e.g. mirror finish
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/04—Vegetal fibres
- D06N2201/042—Cellulose fibres, e.g. cotton
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2201/00—Chemical constitution of the fibres, threads or yarns
- D06N2201/06—Animal fibres, e.g. hair, wool, silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/08—Microballoons, microcapsules
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2205/00—Condition, form or state of the materials
- D06N2205/10—Particulate form, e.g. powder, granule
- D06N2205/103—Nanoparticles
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/08—Properties of the materials having optical properties
- D06N2209/0807—Coloured
- D06N2209/083—Multi-coloured
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2213/00—Others characteristics
- D06N2213/03—Fibrous web coated on one side with at least two layers of the same polymer type, e.g. two coatings of polyolefin
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention belongs to the technical field of photonic crystal preparation, and discloses a preparation method of a bionic photonic crystal structure chromogenic textile. The invention adopts the self-crosslinking polyacrylate as the adhesive, and plays a role in bonding the photonic crystal color-generating structure layer and the textile substrate, thereby enhancing the bonding between the photonic crystal color-generating structure layer and the textile substrate and obviously improving the stability and firmness of the photonic crystal color-generating structure layer.
Description
Technical Field
The invention belongs to the technical field of photonic crystal preparation, and particularly relates to a preparation method of a functional textile, and more particularly relates to a preparation method of a bionic photonic crystal structure chromogenic textile.
Background
At present, the coloring of textiles is mainly based on pigment color generation, that is, color is generated mainly by applying a coloring agent such as a dye or a pigment, and the mechanism thereof involves an electron transition mechanism and the like. With the progress of research, researches and reports for obtaining colors of bionic structures by utilizing the interaction between a special physical structure constructed on the surface of a textile and visible light, such as diffraction, interference, scattering and the like, are frequently repeated. The bionic structure color is obviously different from the pigment color, and the structure color can often generate special effects which are not possessed by the conventional pigment color, such as high saturation, high brightness, special metal luster and iridescence effect (different colors and hues at different observation angles) and the like. If the bionic structure color generation can be tightly combined with the textile, the method is favorable for obtaining the high value-added ecological textile, and the textile structure color generation is expected to become an important supplementary mode of pigment color generation.
Photonic crystal structural color is a common structural color. Photonic crystals refer to artificial periodic dielectric structures with photonic band gap characteristics, the basic characteristic of which is to have a photonic band gap. When the visible light wave band falls into the special forbidden band of the photonic crystal, the photonic crystal can selectively reflect the light forbidden to be transmitted in the forbidden band, the reflected light forms coherent diffraction on the surface of the photonic crystal with the periodically arranged structure, and the human eyes can see gorgeous structural color. At present, reports of constructing a photonic crystal color-generating structure on the surface of a textile substrate by using nano microspheres as structural elements and self-assembling the nano microspheres so as to obtain a bionic structure color effect are continuously presented. However, at present, the color generation of the photonic crystal structure of the textile is mostly concentrated on common knitted and woven textiles, and the textile is more favored to be taken.
Common materials of textiles include polypropylene non-woven fabrics, terylene, cotton, polyester cotton, real silk fabrics, polyester and the like. The non-woven fabric is a common textile formed by directional or random fibers, has the characteristics of moisture resistance, air permeability, light weight, low price, recycling and the like, is produced by a continuous one-step method of high-temperature melting, spinning, laying, hot-pressing and coiling, and is widely applied in the fields of sanitation, advertising, decoration, packaging, clothing, automobile industry and the like, and the non-woven fabric product with colors is not lacked. So far, most of the colors of textiles, especially non-woven fabrics, are mostly obtained by pigment color generation, and there are few researches and reports on constructing a photonic crystal color generation structure on the surface of non-woven fabrics to obtain a bionic structure color so as to obtain a structure color generation non-woven fabrics product. On the other hand, in the preparation process of the bionic photonic crystal structure chromogenic textile, the stability of the photonic crystal chromogenic structure on the surface of the textile substrate is of great importance to the color presentation and the color durability, so that the enhancement of the stability of the photonic crystal chromogenic structure on the textile has great significance to the improvement of the application level of the bionic photonic crystal structure chromogenic textile.
Disclosure of Invention
The invention aims to provide a preparation method of a bionic photonic crystal structure chromogenic textile, which is obtained by coating a photonic crystal chromogenic structural layer on a textile substrate.
Preferably, the method obtains a textile with a highly stable photonic crystal color-generating structure by disposing an adhesive layer between the photonic crystal color-generating structure layer and the textile substrate.
Preferably, the adhesive layer is a coating layer formed by curing a self-crosslinking polyacrylate emulsion, namely, the adhesive layer is a transparent self-crosslinking polyacrylate film layer formed on the surface of the textile substrate. The self-crosslinking polyacrylate emulsion is selected to prepare the coating because of low price, low requirement on film forming conditions, good film forming property, and tough, smooth and bright coating film and strong adhesion.
Preferably, the photonic crystal color generation structure layer is a coating formed by curing nano microspheres.
Specifically, the adhesive self-crosslinking polyacrylate emulsion is cast on a textile substrate to obtain a transparent bonding layer, and then the monodisperse nano microspheres are self-assembled on the transparent bonding layer, so that the bionic photonic crystal structure chromogenic textile with structural color effect and good durability is obtained. The textile can be used in the fields of advertisement, decoration, packaging, clothing, anti-counterfeiting and the like.
Specifically, the nano-microsphere is a microsphere that is commonly used in the art and can self-assemble on the surface of a textile substrate to generate a photonic crystal structure, and may be any one of polystyrene microsphere, silica microsphere, titanium dioxide microsphere, polymethyl methacrylate microsphere, poly (styrene-methacrylic acid) microsphere, poly (styrene-methyl methacrylate-methacrylic acid) microsphere, silica-polystyrene composite microsphere, and the like.
Preferably, the method comprises the steps of:
(1) preparation of the adhesive layer: adding water into self-crosslinking polyacrylate emulsion with solid content of 45% to prepare finishing liquid, preparing the finishing liquid on the surface of a textile substrate, and curing to obtain the textile substrate with an adhesive layer;
(2) preparing a photonic crystal color-generating structure layer: centrifuging monodisperse nano microspheres with the solid content of 30% and the particle size of 175-300 nm, pouring out supernatant, uniformly mixing lower-layer sticky substances with a polyvinyl alcohol aqueous solution with the mass fraction of 10%, preparing the obtained mixed solution on the surface of the bonding layer, and curing to obtain the color-developing textile with the bionic photonic crystal structure.
Preferably, the concentration of the finishing liquid in the step (1) is 10-20% by mass fraction.
Preferably, the textile substrate in the step (1) is any one of polypropylene non-woven fabric, terylene, cotton, polyester cotton, silk fabric and polyester.
Preferably, when the textile substrate is a polypropylene non-woven fabric, the gram weight of the polypropylene non-woven fabric is 150-200 g/m2。
Preferably, the thickness of the adhesive layer in the step (1) is 60 to 85 μm.
Preferably, the weight ratio of the nano microsphere sticky substance to the polyvinyl alcohol in the step (2) is (40-50): 100.
Preferably, the thickness of the photonic crystal color-generating structure in the step (2) is 20-30 μm.
Preferably, the curing in step (1) and step (2) may be performed by a technique commonly used in the art, such as oven drying, uv curing lamp irradiation, and the like.
In a preferable mode, in the step (1), the curing is performed by oven drying, the drying temperature is 120 ℃, and the treatment time is 120 s.
In a preferable mode, in the step (2), the curing is performed by oven drying, the drying temperature is 60 ℃, and the treatment time is 60 s.
In the invention, the nanometer microsphere is firstly centrifuged to remove the supernatant liquid so as to further improve the solid content, the lower sticky substance is taken out and then mixed with the polyvinyl alcohol, and then the mixture is coated on the textile substrate, the sticky nanometer microsphere granules are easy to self-assemble on the surface of the textile substrate with the adhesive layer rapidly to form a photonic crystal structure layer, and the defect of long time required by the generation of the structural color caused by the direct coating of the nanometer microsphere dispersion liquid is effectively solved. The polyvinyl alcohol is selected to prepare the coating liquid, because the polyvinyl alcohol has certain adhesiveness, the bonding property between adjacent microspheres in the photonic crystal structure can be improved, the stability of the photonic crystal structure is further enhanced, and the stability and the firmness of the photonic crystal color-generating structure on the textile are further improved.
Has the advantages that:
the invention provides a preparation method of a bionic photonic crystal structure chromogenic textile, which is characterized in that the structural chromogenic textile is prepared by utilizing a physical chromogenic principle, and the photonic crystal chromogenic structural layer enables the textile to have structural color and the color to have obvious iridescent effect (the color changes along with different observation angles); according to the invention, the self-crosslinking polyacrylate is used as an adhesive, and the polyacrylate film is arranged between the photonic crystal color generation structure layer and the textile substrate, so that the effect of bonding the photonic crystal color generation structure layer and the textile substrate is achieved, the bonding between the photonic crystal color generation structure layer and the textile substrate is enhanced, and the stability and firmness of the photonic crystal color generation structure layer are remarkably improved.
Drawings
FIG. 1 is a schematic structural diagram of a bionic photonic crystal structure-colored polypropylene non-woven fabric obtained in the invention, wherein: 1. a textile substrate; 2. an adhesive layer; 3. nano-microsphere particles; 4. a photonic crystal color-generating structure layer.
FIG. 2 is a scanning electron microscope image of the bionic photonic crystal color-generating structure layer obtained in example 1.
FIG. 3 is a video microscope image of the polypropylene nonwoven fabric with bionic photonic crystal structure color generation obtained in example 1.
Detailed Description
The present invention will be described in more detail with reference to examples. It is to be understood that the practice of the invention is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the invention.
In the present invention, all the percentages are by weight or mass, and all the equipments and raw materials are commercially available or commonly used in the industry, if not specified. Unless otherwise indicated, the examples employ methods that are within the ordinary skill in the art.
Example 1
The embodiment provides a preparation method of a bionic photonic crystal structure color-generating polypropylene non-woven fabric, which comprises the following specific steps:
(1) preparing a transparent self-crosslinking polyacrylate film layer: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, preparing into finishing liquid with concentration of 10% (by weight), and casting the finishing liquid onto a product with gram weight of 150g/m2Drying the surface of the white polypropylene non-woven fabric in an oven at 120 ℃;
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse black polystyrene nano microspheres with the solid content of 30% and the particle size of 240nm, pouring out supernatant, uniformly mixing a lower-layer sticky substance and a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 40:100, blade-coating the mixture on a polypropylene non-woven fabric loaded with a transparent self-crosslinking polyacrylate film layer by a coating machine, taking out the polypropylene non-woven fabric, and drying the polypropylene non-woven fabric in a 60 ℃ oven to obtain the self-crosslinking polyacrylate film.
The transparent self-crosslinking polyacrylate film layer obtained in example 1 was tested to have a thickness of 60 μm; the thickness of the obtained photonic crystal color-generating structure is 20 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained in example 1 shows a green structure color effect and has a significant iridescence effect (the observed color changes along with the change of the observation angle).
In the embodiment, the black nano-microspheres are used, so that the process of color pretreatment of the white polypropylene non-woven fabric base layer is omitted, the nano-microspheres directly construct a photon crystal structure with bright color generation on the white non-woven fabric base layer, and the practical application of the bionic structure color generation on the non-woven fabric is promoted; from another aspect, the invention also provides a method for preparing the bionic photonic crystal structure on the white polypropylene non-woven fabric.
Example 2
The embodiment provides a preparation method of a bionic photonic crystal structure color-generating polypropylene non-woven fabric, which comprises the following specific steps:
(1) preparing a transparent self-crosslinking polyacrylate film layer: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, preparing into finishing liquid with concentration of 15% (by weight), and casting the finishing liquid into a product with gram weight of 180g/m2Drying the surface of the white polypropylene non-woven fabric in an oven at 120 ℃;
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse black poly (styrene-methacrylic acid) nano microspheres with the solid content of 30% and the particle size of 300nm, pouring out supernatant, taking down a lower-layer sticky substance, uniformly mixing the lower-layer sticky substance with a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 45:100, blade-coating the mixture on polypropylene non-woven fabric loaded with a transparent self-crosslinking polyacrylate film layer by a coating machine, taking out the polypropylene non-woven fabric, and placing the polypropylene non-woven fabric in a 60 ℃ oven for drying to obtain the self-crosslinking polyacrylate film.
The thickness of the transparent self-crosslinking polyacrylate film layer obtained in example 2 was 74 μm; the thickness of the obtained photonic crystal color-generating structure was 26 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained in example 2 shows a magenta structure color effect and has a significant iridescence effect (the observed color changes along with the change of the observation angle).
Example 3
The embodiment provides a preparation method of a bionic photonic crystal structure color-generating polypropylene non-woven fabric, which comprises the following specific steps:
(1) preparing a transparent self-crosslinking polyacrylate film layer: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, preparing into finishing liquid with concentration of 20% (by weight), and casting the finishing liquid into a product with gram weight of 200g/m2Drying the surface of the white polypropylene non-woven fabric in an oven at 120 ℃;
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse black (polystyrene-butyl acrylate-methacrylic acid) nano microspheres with the solid content of 30% and the particle size of 175nm, pouring out supernatant, uniformly mixing a lower-layer sticky substance and a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 50:100, blade-coating the mixture on a polypropylene non-woven fabric loaded with a transparent self-crosslinking polyacrylate film layer through a coating machine, taking out the polypropylene non-woven fabric, and drying the polypropylene non-woven fabric in a 60 ℃ oven to obtain the self-crosslinking polyacrylate film.
The thickness of the transparent self-crosslinking polyacrylate film layer obtained in example 3 was 85 μm; the thickness of the obtained photonic crystal color-generating structure was 30 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained in example 3 shows a purple structure color effect and has a significant iridescence effect (the observed color changes along with the change of the observation angle).
Example 4
The embodiment provides a preparation method of a bionic photonic crystal structure color-generating polypropylene non-woven fabric, which comprises the following specific steps:
(1) preparing a transparent self-crosslinking polyacrylate film layer: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, and preparing into the final product10% (by mass) of the finishing liquor, and then casting the finishing liquor on a gram weight of 150g/m2Drying the surface of the white polypropylene non-woven fabric in an oven at 120 ℃;
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse black (polystyrene-butyl acrylate-acrylic acid) nano microspheres with the solid content of 30% and the particle size of 220nm, pouring out supernatant, taking down a lower-layer sticky substance, uniformly mixing the lower-layer sticky substance with a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 50:100, blade-coating the mixture on polypropylene non-woven fabric loaded with a transparent self-crosslinking polyacrylate film layer through a coating machine, taking out the polypropylene non-woven fabric, and placing the polypropylene non-woven fabric in an oven at 60 ℃ for drying to obtain the self-crosslinking polyacrylate film.
The thickness of the transparent self-crosslinking polyacrylate film layer obtained in example 4 was tested to be 70 μm; the thickness of the resulting photonic crystal color-generating structure was 27 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained in example 4 shows a blue structure color effect and has a significant iridescence effect (the observed color changes along with the change of the observation angle).
Example 5
The embodiment provides a preparation method of bionic photonic crystal structure color-producing polyester cotton, which comprises the following specific steps:
(1) preparing a transparent self-crosslinking polyacrylate film layer: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, preparing into finishing liquid with concentration of 10% (by weight), and casting the finishing liquid into a product with gram weight of 100g/m2Placing the surface of the black polyester-cotton fabric in an oven for drying at 120 ℃;
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse polymethyl methacrylate (PMMA) microspheres with the solid content of 30% and the particle size of 280nm, pouring out supernatant, uniformly mixing lower-layer sticky substances with 10% polyvinyl alcohol aqueous solution according to the weight ratio of 40:100, blade-coating the mixture on black polyester-cotton fabric loaded with a transparent self-crosslinking polyacrylate film layer by a coating machine, taking out, and drying in a 60 ℃ drying oven to obtain the self-crosslinking polyacrylate film.
The transparent self-crosslinking polyacrylate film layer obtained in example 5 was tested to have a thickness of 60 μm; the thickness of the obtained photonic crystal color-generating structure is 20 μm.
The bionic photonic crystal structure color-producing polyester cotton obtained in example 5 shows an orange-red structural color effect and has a significant iridescence effect (the observed color changes along with the change of the observation angle).
Comparative example 1
The difference between the comparative example and the example 1 is that no adhesive layer is arranged between the photonic crystal color-generating structure layer and the polypropylene non-woven fabric, and the preparation method is the following in other examples 1:
centrifuging monodisperse black polystyrene nano microspheres with the solid content of 30% and the particle size of 240nm, pouring out supernatant, uniformly mixing a lower-layer sticky substance and a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 40:100, blade-coating the mixture on white polypropylene non-woven fabric by a coating machine, taking out the white polypropylene non-woven fabric, and drying the white polypropylene non-woven fabric in a 60 ℃ oven to obtain the nano-composite material.
The thickness of the photonic crystal color-generating structure obtained in the comparative example was 20 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained by the comparative example shows a green structure color effect and has a remarkable iridescence effect (the observed color changes along with the change of the observation angle).
Comparative example 2
The difference between the comparative example and the example 1 is that a bonding layer is not arranged between the photonic crystal color generation structure layer and the polypropylene non-woven fabric, a self-crosslinking polyacrylate emulsion and the nano microspheres are mixed to obtain a mixed solution, and then the mixed solution is coated on the polypropylene non-woven fabric, and the preparation method is the same as that of the example 1, and specifically comprises the following steps:
(1) preparing a transparent self-crosslinking polyacrylate finishing liquid: adding purified water into self-crosslinking polyacrylate emulsion with solid content of 45%, and preparing into finishing liquid with concentration of 10% (by mass);
(2) preparing a bionic photonic crystal color-generating structure layer: centrifuging monodisperse black polystyrene nano microspheres with the solid content of 30% and the particle size of 240nm, pouring out supernatant, uniformly mixing a lower-layer sticky substance and a polyvinyl alcohol aqueous solution with the mass fraction of 10% according to the weight ratio of 40:100, adding the self-crosslinking polyacrylate finishing liquid prepared in the step (1), uniformly mixing to obtain a mixed liquid, blade-coating the obtained mixed liquid on a polypropylene non-woven fabric loaded with a transparent self-crosslinking polyacrylate film layer through a coating machine, taking out, and drying in a 60 ℃ oven to obtain the self-crosslinking polyacrylate film.
The thickness of the photonic crystal color-generating structure obtained in the comparative example was tested to be 75 μm.
The bionic photonic crystal structure color-generating polypropylene non-woven fabric obtained in the comparative example shows a dull structural color effect after characterization. The reason is that the microspheres are too adhered after the self-crosslinking polyacrylate and the nano microspheres are mixed, the self-assembly capability of the nano microspheres is influenced to a certain extent, the regular structure is not achieved, and the bright structural color cannot be developed.
Further, the inventors examined the color forming effect, binding fastness and stability of photonic crystals of the textiles obtained in the above examples and comparative examples through surface condition observation and folding and bending test, water washing test.
The specific process of the folding and bending test is as follows: and (3) folding and bending one end of the obtained textile from the horizontal direction until the other end of the textile is touched, and observing the structural color of the textile surface and the change condition of the photonic crystal before and after folding and bending by using a video microscope and a digital camera. The specific process of the water washing test is as follows: placing the obtained textile in an oscillation water bath with the water temperature of 60 ℃, oscillating and washing for 30min, and observing the textile surface structure color and the change condition of the photonic crystal before and after washing by using a video microscope and a digital camera. The results of the experiments are shown in the following table:
TABLE 1 Photonic Crystal bond Strength and stability test results
The experiment shows that the method not only can obviously improve the stability and fastness of the photonic crystal structure on the textile, but also can obtain the structural color textile with bright color and obvious iridescence effect.
The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.
Claims (9)
1. A preparation method of a bionic photonic crystal structure color-generating textile is characterized in that an adhesive layer is arranged between the photonic crystal color-generating structure layer and a textile substrate.
2. The method of claim 1, wherein the adhesive layer is a coating formed by curing a self-crosslinking polyacrylate emulsion.
3. The method of claim 1, wherein the photonic crystal color-generating structure layer is a coating formed by curing of nanospheres.
4. Method according to claim 1, characterized in that it comprises the following steps:
(1) preparation of the adhesive layer: adding water into self-crosslinking polyacrylate emulsion with solid content of 45% to prepare finishing liquid, preparing the finishing liquid on the surface of a textile substrate, and curing to obtain the textile substrate with an adhesive layer;
(2) preparing a photonic crystal color-generating structure layer: centrifuging monodisperse nano microspheres with the solid content of 30% and the particle size of 175-300 nm, pouring out supernatant, uniformly mixing lower-layer sticky substances with a polyvinyl alcohol aqueous solution with the mass fraction of 10%, preparing the obtained mixed solution on the surface of the bonding layer, and curing to obtain the color-developing textile with the bionic photonic crystal structure.
5. The method according to claim 4, wherein the concentration of the finishing liquor in the step (1) is 10-20% by mass fraction.
6. The method according to claim 4, wherein the textile substrate in the step (1) is any one of polypropylene non-woven fabric, terylene, cotton, polyester cotton, silk fabric and polyester.
7. The method according to claim 4, wherein the thickness of the adhesive layer in the step (1) is 60 to 85 μm.
8. The method according to claim 4, wherein the weight ratio of the nano microsphere adhesive to the polyvinyl alcohol in the step (2) is (40-50): 100.
9. The method according to claim 4, wherein the thickness of the photonic crystal color-generating structure in the step (2) is 20-30 μm.
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| CN113897789B (en) * | 2021-09-16 | 2023-10-20 | 浙江理工大学 | Yarn with photonic crystal structural color and application thereof |
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| CN114182546A (en) * | 2021-12-08 | 2022-03-15 | 华东师范大学 | Photonic crystal structure yarn dyed fabric and preparation method and application thereof |
| CN114182546B (en) * | 2021-12-08 | 2023-07-14 | 华东师范大学 | Photonic crystal structure colored fabric and preparation method and application thereof |
| CN114561812A (en) * | 2022-02-24 | 2022-05-31 | 浙江理工大学 | Color-changing photonic crystal textile capable of slowly releasing antibacterial and mosquito-proof substances in presence of water and preparation method thereof |
| CN114561812B (en) * | 2022-02-24 | 2024-06-04 | 浙江理工大学 | Color-changing photonic crystal textile capable of slowly releasing antibacterial and mosquito-proof substances when meeting water and preparation method |
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| CN115287919A (en) * | 2022-08-21 | 2022-11-04 | 浙江理工大学 | Method for preparing patterned photonic crystal structure chromogenic fabric with iridescent effect by screen printing |
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