CN203600721U - Structure of polyimide silver nanoflower composite film - Google Patents
Structure of polyimide silver nanoflower composite film Download PDFInfo
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- CN203600721U CN203600721U CN201320797665.0U CN201320797665U CN203600721U CN 203600721 U CN203600721 U CN 203600721U CN 201320797665 U CN201320797665 U CN 201320797665U CN 203600721 U CN203600721 U CN 203600721U
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Abstract
The utility model discloses a structure of a polyimide silver nanoflower composite film. The structure of the polyimide silver nanoflower composite film comprises a substrate layer, wherein the substrate layer is a polyimide film, the surface of which is complexed with silver ions; silver nanoflower layers are respectively adhered to the upper surface and the lower surface of the polyimide film and are formed by silver nanosheets, and the length*width*height of the silver nanosheets is 200-900nm*20-40nm*20-40nm; the thicknesses of the silver nanoflower layers are 1-8 micrometers; and the silver nanosheets are formed by silver nanoparticles. The structure has the advantages that the excellent mechanical property of the polyimide film serving as the substrate is ensured, the generated silver nanoflower is uniform in distribution and large in density, and the polyimide silver nanoflower composite film has wide application prospect.
Description
Technical field
The utility model discloses a kind of structure of polyimides silver nanoparticle flower laminated film, and preparation method thereof, relate to metal nano technical field, be specifically related to a kind of polyimides silver nanoparticle flower laminated film obtaining at Kapton surface in situ growth silver nanoparticle flower and preparation method thereof.
Background technology
Metal Nano structure often has the character of many uniquenesses, these character make them obtain studying widely and applying in fields such as optics, electricity, magnetics, catalysis, medical and nano-devices, and wherein the nano structural material of silver is owing to having good electric conductivity, catalytic and SERS(metal nanoparticle surface-enhanced Raman) characteristic is subject to extensive concern.But in actual applications, compare at present the generally powder with nanostructured and the colloidal sol of preparation, the film with nanostructured is more convenient for operating and reclaiming, and can not pollute.So how can be in the situation that guaranteeing the original performance of metal Nano structure and pattern, metallic film or metal composite thin film that again can high-efficient simple produce has nanostructured are a great problems.
Prior art, as the publication number Chinese patent application document that is CN102330080A, disclosing " a kind of preparation method of silver nanoparticle film ", is the method for preparing silver nanoparticle sheet film and be further assembled into the silver nanostructured film of colored type in silicon chip, sheet glass, sheet metal substrate.Though this patent application is prepared silver nanoparticle floral structure at multiple inorganic material surface, for organic material surface lack correlative study, this has limited the application of the metal Nano structure take organic flexibility as substrate.As everyone knows, Kapton is one of organic polymer thin-film material having outstanding combination property, and it has excellent mechanical property, chemical stability and resistant of high or low temperature, has been widely used in the field such as Aeronautics and Astronautics and microelectronics.
Utility model content
The utility model provides a kind of structure of polyimides silver nanoparticle flower laminated film, take Kapton as substrate, silver nanoparticle flower layer on the upper and lower surface of Kapton has, obtain the laminated film of silver nanoparticle flower and polyimides, give this laminated film SERS characteristic by silver nanostructured electromagnetic property, gathered around and have broad application prospects.
The utility model discloses a kind of structure of polyimides silver nanoparticle flower laminated film, comprise basalis, described basalis is the Kapton that surface complexation has silver ion, the upper surface of described Kapton and lower surface are respectively with silver nanoparticle flower layer, described silver nanoparticle flower layer is made up of Nano silver piece, length × wide × the height of described Nano silver piece be 200～900nm ×, 20～40nm × 20～40nm.
The structure of the utility model polyimides silver nanoparticle flower laminated film, wherein, the thickness of described silver nanoparticle flower layer is 1～8um.Described Nano silver piece is made up of silver nano-grain.
Silver nanoparticle flower on the utility model basalis is evenly distributed, and density is large, in guaranteeing the very good mechanical properties of basalis Kapton, has given this laminated film SERS characteristic by its silver nanostructured electromagnetic property in surface.The utility model preparation method is simple, easy to operate, and cost is low; Can be to Kapton two sides depositing silver nano flower simultaneously; The silver nanoparticle flower that superficial growth goes out is evenly distributed, and density is large, has good electromagnetic property; Retain the good mechanical performance of polyimides, and belonged to flexible material, be convenient to practical operation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model polyimides silver nanoparticle flower laminated film;
Fig. 2 is the XRD collection of illustrative plates of surperficial silver nanoparticle flower layer in the utility model embodiment mono-; Fig. 3 is the SEM microstructure figure of surperficial silver nanoparticle flower layer in the utility model embodiment mono-;
Fig. 4 is the SEM microstructure figure of surperficial silver nanoparticle flower layer in the utility model embodiment bis-;
Fig. 5 is the SEM microstructure figure of surperficial silver nanoparticle flower layer in the utility model embodiment tri-.
The specific embodiment
Tell about by the following examples detailed process of the present utility model, it is the convenience in order to understand that embodiment is provided, and is never restriction the utility model.
The structure of a kind of polyimides silver nanoparticle flower of the utility model laminated film, comprise basalis, described basalis is the Kapton that surface complexation has silver ion, the upper surface of described Kapton and lower surface are respectively with silver nanoparticle flower layer, described silver nanoparticle flower layer is made up of Nano silver piece, length × wide × the height of described Nano silver piece be 200～900nm ×, 20～40nm × 20～40nm.The thickness of described silver nanoparticle flower layer is 1～8um, and described Nano silver piece is made up of silver nano-grain.
Embodiment mono-: the structure of a kind of polyimides silver nanoparticle flower of the utility model laminated film, obtain in accordance with the following methods, the mixed aqueous solution of configuration ascorbic acid and natrium citricum, ascorbic acid concentrations is 0.01mol/l, sodium citrate concentration is 0.2mmol/l, and in mixed aqueous solution, the concentration ratio of ascorbic acid and natrium citricum is 50:1, in this mixed aqueous solution, dropwise adds buffer citric acid, the pH that regulates this mixed aqueous solution is 3.2, for subsequent use after slowly stirring; The surface complexation of preparing by surface chemical modification-ion-exchange is had to the Kapton of silver ion, at room temperature immerse fast in the mixed aqueous solution of the above-mentioned ascorbic acid configuring and natrium citricum, dip time is 2min, remains a constant speed and slowly stir in dip time; After taking-up, fully clean by deionized water, wash away remained on surface solution, be statically placed in air natural dryingly, obtain the polyimides silver nanoparticle flower laminated film that silver nanoparticle flower layer thickness is 4um.By X-ray diffraction analysis, the X ray diffracting spectrum of the polyimides silver nanoparticle flower laminated film surface composition that embodiment mono-prepares, according to the characteristic peak of collection of illustrative plates, shows that film surface composition is argent, as shown in Figure 2.Microscopic appearance observation is carried out on polyimides silver nanoparticle flower laminated film surface embodiment mono-being prepared by SEM, can see the nano flower being assembled into by Nano silver piece of Surface Creation, even compact, monolithic Nano silver piece length is about 300～800nm, width and height are in 20～40nm scope, as shown in Figure 3.
Embodiment bis-: the structure of a kind of polyimides silver nanoparticle flower of the utility model laminated film, obtain in accordance with the following methods, the mixed aqueous solution of configuration hydroquinones and potassium citrate, hydroquinones concentration is 0.01mol/l, concentration of potassium citrate is 1mmol/l, and in mixed aqueous solution, the concentration ratio of hydroquinones and potassium citrate is 10:1, in this mixed aqueous solution, dropwise adds buffer citric acid, regulating the pH of mixed aqueous solution is 3.5, for subsequent use after slowly stirring; The surface complexation of preparing by surface chemical modification-ion-exchange is had to the Kapton of silver ion, in the hydroquinones that at room temperature immersion configures fast and the mixed aqueous solution of potassium citrate, dip time is 1min, remains a constant speed and slowly stir in dip time; After taking-up, fully clean by deionized water, wash away remained on surface solution, be statically placed in air natural dryingly, obtain the polyimides silver nanoparticle flower laminated film that silver nanoparticle flower layer thickness is 1um.Microscopic appearance observation is carried out on polyimides silver nanoparticle flower laminated film surface embodiment bis-being prepared by SEM, can see the nano flower being assembled into by Nano silver piece of Surface Creation, even compact, monolithic Nano silver piece length is about 200～400nm, width and be highly 20～40nm, as shown in Figure 4.
Embodiment tri-: the structure of a kind of polyimides silver nanoparticle flower of the utility model laminated film, obtain in accordance with the following methods, the mixed aqueous solution of configuration DMAB and natrium citricum, DMAB concentration is 0.001mol/l, sodium citrate concentration is 1mmol/l, and in mixed solution, the concentration ratio of DMAB and natrium citricum is 1:1, dropwise adds buffer citric acid, regulating the pH of mixed aqueous solution is 3.8, for subsequent use after slowly stirring; The surface complexation of preparing by surface chemical modification-ion-exchange is had to the Kapton of silver ion, in the DMAB that at room temperature immersion configures fast and the mixed aqueous solution of natrium citricum, dip time is 5min, remains a constant speed and slowly stir in dip time; After taking-up, fully clean by deionized water, wash away remained on surface solution, be statically placed in air natural dryingly, obtain the acid imide silver nanoparticle flower laminated film that silver nanoparticle flower layer thickness is 8um.Microscopic appearance observation is carried out on polyimides silver nanoparticle flower laminated film surface embodiment tri-being prepared by SEM, can see the nano flower being assembled into by Nano silver piece of Surface Creation, even compact, monolithic Nano silver piece length is about 500～900nm, width and be highly 20～40nm, as shown in Figure 5.
Although the utility model is described in conjunction with figure above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment is only schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; in the situation that not departing from the utility model aim, can also make a lot of distortion, within these all belong to protection of the present utility model.
Claims (3)
1. the structure of a polyimides silver nanoparticle flower laminated film, comprise basalis, described basalis is the Kapton that surface complexation has silver ion, it is characterized in that, the upper surface of described Kapton and lower surface are respectively with silver nanoparticle flower layer, described silver nanoparticle flower layer is made up of Nano silver piece, the length × wide × height of described Nano silver piece be 200～900nm ×, 20～40nm × 20～40nm.
2. the structure of polyimides silver nanoparticle flower laminated film according to claim 1, is characterized in that, the thickness of described silver nanoparticle flower layer is 1～8um.
3. the structure of polyimides silver nanoparticle flower laminated film according to claim 1, is characterized in that, described Nano silver piece is made up of silver nano-grain.
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| CN201320797665.0U CN203600721U (en) | 2013-12-04 | 2013-12-04 | Structure of polyimide silver nanoflower composite film |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112839502A (en) * | 2021-02-07 | 2021-05-25 | 深圳市华科创智技术有限公司 | Electromagnetic shielding layer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112839502A (en) * | 2021-02-07 | 2021-05-25 | 深圳市华科创智技术有限公司 | Electromagnetic shielding layer |
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Granted publication date: 20140521 Termination date: 20211204 |