TWI632260B - High-stability quantum dots doped fiber and anti-counterfeit fabric having the same - Google Patents

Abstract

Different from the conventional quantum dot fiber, which shows the problem of poor stability and luminous efficiency, the present invention provides a high stability quantum dot fiber mainly composed of a plurality of quantum dots, a polymer sheath, and a sheath protective film. Composition. In particular, the polymer sheath is made of an ester polymer having a high glass transition temperature, and the sheath protective film is made of an acrylic polymer having a low glass transition temperature. Among them, the low glass transition temperature of the acrylic polymer helps to improve the softness and corrosion resistance of the quantum dot fiber, thereby effectively preventing the yellowing of the polymer sheath during storage or processing, and avoiding water and oxygen passing through the rayon. The purpose of the polymer to erode quantum dots.

Description

High stability quantum dot fiber and anti-counterfeit fabric having the high stability quantum dot fiber

The invention relates to the technical field of fibers and fabrics, in particular to a high stability quantum dot fiber and a security fabric having the high stability quantum dot fiber.

The implementation of anti-counterfeiting technology can be used to curb the infringer's activities of product imitation without the permission of the owner. At present, anti-counterfeiting technology is divided into: printing anti-counterfeiting technology, chemical material anti-counterfeiting technology, physical anti-counterfeiting technology, digital information anti-counterfeiting technology, structure and packaging anti-counterfeiting technology.

Quantum dot fibers and their fabrics have been developed as emerging anti-counterfeiting technologies. Chinese Patent No. CN106245129 discloses a method for manufacturing quantum dot fibers, which comprises the following manufacturing steps: (1') adding quantum dots to an organic solvent, uniformly stirring to obtain a quantum dot solution; (2') adding an additive polymer The quantum dot spinning solution is sequentially added to the quantum dot solution, and uniformly stirred to obtain a quantum dot spinning solution; (3') the quantum dot spinning solution is processed into a quantum dot fiber by an electrospinning device.

Referring to FIG. 1A, FIG. 1B and FIG. 1C, a schematic diagram of a quantum dot security fabric is shown. As shown in Fig. 1A, the simple configuration of the quantum dot security fabric 1' includes a main body 11', a security webbing 12' and a security pattern 13'. Here, the main body 11' is a woven fabric substrate or a paper substrate woven from a plurality of fibers. On the other hand, the anti-counterfeit webbing 12' and the security pattern 13' can be woven by using a plurality of quantum dot fibers and a plurality of polymer fibers in combination. In particular, Figure 1A shows the security pattern 13' as a combination of geometry and pattern. Different from Fig. 1A, Fig. 1B shows that the security pattern 13' is a one-dimensional barcode (1D barcode). In the anti-counterfeiting technology, a plurality of quantum dot fibers having different widths and different fluorescent colors may be used to form the barcode, so that the photoluminescence (PL) spectrum of the barcode includes a plurality of visible light bands of different intensities and wavelengths. As a set of codes. On the other hand, Fig. 1C shows that the security pattern 13' is a combination of letters and numbers.

The quantum dot security fabric 1' exhibits an interesting anti-counterfeiting technique. However, mononuclear quantum dots (eg, CdSe) readily react with water-oxygen molecules in the environment, causing problems with poor quantum dot stability. Although the proposed and applied applications of core-nuclear structure quantum dots (CdSe-ZnS) and multi-alloy quantum dots (Cd _1-X Zn _X Se or Cd _1-X Zn _1-X Se) improve the stability of traditional mononuclear quantum dots. Good problems, but complex quantum dots also show defects in process complexity and high cost. Conversely, the selection of a quantum dot having a simple structure as a fluorescent substance embedded in the security web 12' may show a defect of insufficient stability. Therefore, how to develop a quantum dot anti-counterfeiting fabric with high stability and low cost has become a subject worthy of attention. In view of this, the inventors of the present invention have tried their best to study the invention, and finally developed a high-stability quantum dot fiber of the present invention and a security fabric having the high-stability quantum dot fiber.

The object of the present invention is to provide a high stability quantum dot fiber and a security fabric having the high stability quantum dot fiber. Different from the conventional quantum dot fiber, the stability and the luminous efficiency are not good. The high stability quantum dot fiber proposed by the invention mainly consists of a plurality of quantum dots, a polymer sheath, and a sheath protective film. Composition. In particular, the polymer sheath is made of an ester polymer having a high glass transition temperature, and the sheath protective film is made of an acrylic polymer having a low glass transition temperature. Among them, the low glass transition temperature of the acrylic polymer helps to improve the softness and corrosion resistance of the quantum dot fiber, thereby effectively preventing the yellowing of the polymer sheath during storage or processing, and avoiding water and oxygen passing through the rayon. The purpose of the polymer to erode quantum dots.

In order to achieve the above-mentioned primary object of the present invention, the inventors of the present invention provide a first embodiment of the high-stability quantum dot fiber, which is composed of: a polymer sheath; a plurality of quantum dots, Doped or coated in the polymer sheath; and a sheath protective film that coats the polymer sheath.

Further, in order to achieve the above-mentioned primary object of the present invention, the inventors of the present invention simultaneously provide a second embodiment of the high-stability quantum dot fiber, which is composed of: a polar core; a polymer sheath, a package The polar core is coated; a plurality of quantum dots are adsorbed on the surface of the polar core to be doped or coated in the polymer sheath; and a sheath protective film is coated on the polymer sheath.

Further, in order to achieve the above-mentioned primary object of the present invention, the inventors of the present invention simultaneously provide a third embodiment of the high-stability quantum dot fiber, which is composed of: a polar core; a polymer sheath, a package Covering the polar core; a plurality of quantum dots adsorbed on the surface of the polar core to be doped or coated in the polymer sheath; a sheath protective film covering the polymer sheath; and a plurality of hydrophilic groups Nanoparticles are blended into the sheath protective film.

In the first embodiment, the second embodiment, and the third embodiment of the high-stability quantum dot fiber, the polymer sheath may be made of any of the following materials: polyester (Polyester, PET), polyurethane ( Polyurethane, PU), Poly(vinyl chloride, PVC), Polypropylene (PP), or Polyamide (PA), or a combination or copolymer of the above, or non-man-made Co-fabric of materials.

In the first embodiment, the second embodiment, and the third embodiment of the high-stability quantum dot fiber, the sheath protective film is made of an acrylic polymer monomer having a low glass transition temperature.

In the first embodiment, the second embodiment, and the third embodiment of the high-stability quantum dot fiber, the quantum dot may be any of the following: II-VI quantum dots, III-V quantum dots. a group II-VI quantum dot having a shell-core structure, a III-V quantum dot having a shell-core structure, an aspherical II-VI quantum dot having an alloy structure, a combination of any two of the above, or any two of the above The combination of the above.

In the first embodiment, the second embodiment, and the third embodiment of the high-stability quantum dot fiber, the quantum dot is an aspherical quantum dot having an alloy structure, and the structure comprises: a compound core , represented by the chemical formula M1A1; an inner shell surrounding the core of the compound and represented by the chemical formula M1 _x M2 _1-x A1 _y A2 _1-y ; and a multi-legged outer shell surrounding the inner shell The layer is represented by the chemical formula M1A2 or M2A2.

In the first embodiment, the second embodiment, and the third embodiment of the high-stability quantum dot fiber, a weather-resistant layer is further included on the sheath protective film; wherein the weather resistance is The material from which the layer is made may be any of the following: a fluorocarbon polymer or an oxide.

In the second embodiment of the high-stability quantum dot fiber, the polar core is a spherical core or a strip core; and the polar core can be made of any of the following: cerium oxide (Silica) SiO2), polymethylmethacrylate (PMMA), a surface modification of any of the above, a combination of any two of the above, or a combination of any two or more of the foregoing.

In the second embodiment of the high-stability quantum dot fiber, the hydrophilic nanoparticle can be made of any of the following: cerium dioxide (Silica, SiO2) particles, titanium dioxide (Titania, TiO2) particles. , methyl vinyl ether-maleic anhydride copolymer monoalkyl ester, polyvinyl pyrrolidone (PVP), or polyacrylate.

In order to more clearly describe a high-stability quantum dot fiber and an anti-counterfeit fabric having the high-stability quantum dot fiber proposed by the present invention, a preferred embodiment of the present invention will be described in detail below with reference to the drawings.

First embodiment of high stability quantum dot fiber

Referring to Figure 2, there is shown a cross-sectional view of a first embodiment of a high stability quantum dot fiber of the present invention. As shown in FIG. 2, the high stability quantum dot fiber 1 of the present invention comprises: a plurality of quantum dots 11, a polymer sheath 12, and a sheath protecting film 13; Among them, the polymer sheath 12 is made of a polymer material. Common synthetic fiber materials include polyester (Polyester, PET), polyurethane (PU), polyvinyl (vinyl chloride), PVC, polypropylene (PP), or polyamide. (Polyamide, PA).

It is worth noting that some studies have pointed out that vinyl monomers containing vinyl may cause redness, itching and other symptoms in the skin of infants or sensitive skin patients. Therefore, in order to improve the similar problem, the polymer sheath 12 may also be made of a high molecular polymer, and the high molecular polymer contains a silica material in a weight ratio (wt%) of at least more than 50, such that The chemical structure of the polymer is [Si(CH ₃ ) ₂ O] _n ; wherein the n is between 50 and 100.

The quantum dot 11 functions as a light converter, which may be a II-VI quantum dot, a III-V quantum dot, a II-VI quantum dot having a shell-core structure, or a shell-core structure. A III-V group quantum dot, an aspherical II-VI quantum dot having an alloy structure, a combination of any two of the above, or a combination of any two or more of the above. Also, various quantum dot material materials are organized in the following Table (1). Table 1)  <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> Category</td><td> Exemplary material</td></tr><tr ><td> II-VI Quantum Dots</td><td> CdSe or CdS </td></tr><tr><td> III-V Quantum Dots</td><td> (Al, In, Ga)P, (Al, In, Ga)As, or (Al, In, Ga)N </td></tr><tr><td> Group II-VI quantum dots having a shell-core structure </td><td> CdSe/ZnS </td></tr><tr><td> III-V Quantum Dots with Shell-Nuclear Structure</td><td> InP/ZnS </td> </tr><tr><td> Non-spherical II-VI quantum dots with alloy structure</td><td> ZnCdSeS </td></tr></TBODY></TABLE>

It must be particularly noted that the exemplary materials listed in Table (1) are not intended to limit the type of quantum dots 11. For example, Figure 3 shows a schematic structural diagram of a quantum dot having a special non-spherical structure. As shown in FIG. 3, the quantum dot 11 may also be an aspherical quantum dot having an alloy structure, and structurally include: a compound core 112 represented by the chemical formula M1A1, which is represented by the chemical formula M1 _x M2 _1-x A1 _y A2 An inner shell layer 113 represented by _1-y , and a multi-legged outer shell layer 114 represented by the chemical formula M1A2 or M2A2. It must be particularly noted that among the chemical formulas M1 _x M2 _1-x A1 _y A2 _1-y , 0 < x < 1 and 0 < y < 1. Further, y is gradually decreased in a first direction from the surface of the compound core 112 toward the surface of the inner shell layer 113. On the other hand, the multi-legged structural outer layer 114 has a base portion 1141 and a plurality of protrusions 1142, and the plurality of protrusions 1142 are spaced apart from each other and extend from the base portion 1141 in a second direction away from the inner casing layer 113.

In view of the above, M1 and M2 are different materials, and M1 and M2 may be any of the following materials: Zn, Sn, Pb, Cd, In, Ga, Ge, Mn, Co, Fe, Al, Mg, Ca, Sr, Ba, Ni, Ag, Ti, or Cu. In addition, A1 and A2 are also different materials, and A1 and A2 may be any of the following materials: Se, S, Te, P, As, N, I, or O.

Next, please refer to the process diagram of the high stability quantum dot fiber of the present invention shown in FIG. 4A, FIG. 4B and FIG. 4C. The first embodiment of the high stability quantum dot fiber of the present invention can be produced by the following steps: Step (1): As shown in FIG. 4A, a plurality of quantum dots 11 are added to have a high glass transition temperature (High Tg). In the monoester monomer solution 12a, a plurality of masterbatch semi-finished products 2 are obtained after the polymerization and granulation process; Step (2): as shown in FIG. 4B, the plurality of masterbatch semi-finished products 2 are added to have a low glass. In the acrylic acid monomer solution 13a of the conversion temperature (Low Tg), a plurality of fiber masterbatches 3 are obtained after the polymerization and granulation process; Step (3): as shown in FIG. 4C, the plural number is obtained after the spinning process The fiber masterbatch 3 is made into a plurality of quantum dot fibers 1.

Among the high-stability quantum dot fibers 1, an acrylic polymer having a low glass transition temperature (that is, a sheath protective film 13) is coated on the high glass transition temperature polyester film (ie, the polymer sheath 12). It helps to improve the softness and corrosion resistance of the quantum dot fiber 1. For example, polymethyl methacrylate helps to enhance the oxidation resistance of the polymer sheath 12, effectively preventing the polymer sheath 12 from yellowing during storage or processing. It is conceivable that the first embodiment utilizes the sheath protective film 13 to enhance the softness and corrosion resistance of the rayon polymer, thereby preventing the water oxygen from eroding the quantum dots 11 through the rayon polymer.

Second embodiment of high stability quantum dot fiber

Referring to Figures 5A and 5B, there are shown cross-sectional views of a second embodiment of a high stability quantum dot fiber of the present invention. Comparing FIG. 2 with FIG. 5A, it can be found that, in comparison with the foregoing first embodiment, the second embodiment of the high-stability quantum dot fiber 1 further includes a polar core 10 as the plurality of quantum structures. Point 11 is the body. In other words, unlike the first embodiment, a plurality of quantum dots 11 are doped and dispersed in the polymer sheath 12, and in the second embodiment, the quantum dots 11 are adsorbed on the surface of the polar core 10. In the second embodiment, the polar core 10 may be made of cerium oxide (Silica, SiO ₂ ), polymethylmethacrylate (PMMA), a modified substance of any of the foregoing, or both of the foregoing. Combination, or a combination of any two or more of the foregoing. Also, in terms of structure, the polar core 10 may be a spherical core or a strip core. Further, as shown in FIG. 5B, the number of the polar cores 10 may be plural.

Third embodiment of high stability quantum dot fiber

Referring to Figure 6, there is shown a cross-sectional view of a third embodiment of a high stability quantum dot fiber of the present invention. Comparing FIG. 5A with FIG. 6, it can be seen that the third embodiment of the high-stability quantum dot fiber 1 is structurally further included in the structure of the sheath protective film 13 as compared with the foregoing second embodiment. A plurality of hydrophilic nanoparticles 14. In the third embodiment, the hydrophilic nanoparticle 14 may be made of cerium oxide (Silica, SiO ₂ ), titanium dioxide (Titania, TiO ₂ ), methyl vinyl ether-maleic anhydride copolymer. Alkyl esters, polyvinyl pyrrolidone (PVP), or polyacrylates. By doping the hydrophilic nanoparticle 14 into the sheath protective film 13, the oil-repellent property of the sheath protective film 13 can be improved, and the oil stain can be prevented from intruding into the polymer sheath 12 through the sheath protective film 13.

Fourth Embodiment of High Stability Quantum Dot Fiber

Referring to Figure 7, there is shown a cross-sectional view of a fourth embodiment of a high stability quantum dot fiber of the present invention. Comparing FIG. 5A with FIG. 7, it can be seen that the fourth embodiment of the high-stability quantum dot fiber 1 is structurally further including a weathering property over the sheath protective film 13 as compared with the foregoing second embodiment. Layer 15. In the fourth embodiment, the weather resistant layer 15 may be made of a fluoropolymer or an oxide to increase the weather resistance or water repellency of the quantum dot fiber 1.

Thus, the above description has clearly and completely described all embodiments of the high stability quantum dot fiber 1 of the present invention. Next, all embodiments of a security fabric having the high stability quantum dot fiber 1 will be described below.

Referring to Figure 8, there is shown an application diagram of a security fabric of the present invention. As shown in Fig. 8, the security fabric 4 is attached to a product 5 having anti-counterfeiting requirements, such as a T-shirt as shown in Fig. 8. Moreover, as shown in the perspective view of the product having anti-counterfeiting requirements as shown in FIGS. 9A and 9B, the anti-counterfeiting fabric 4 can also be attached to a brand-name backpack or a brand-name sneaker to increase its anti-counterfeiting effect. In the present invention, the security fabric 4 is mainly composed of a main body 41 and an anti-counterfeiting pattern 42; wherein the main body 41 may be a fabric substrate independent of the product 5 having anti-counterfeiting requirements. , a paper substrate, or a rigid substrate. If the fabric substrate is used as the main body 41, the fabric substrate can be woven using a plurality of fibers. On the other hand, the security pattern 42 is processed by the high-stability quantum dot fiber 1 described above.

FIG. 8 shows that the security pattern 42 is a graphic, but this does not limit the appearance of the security pattern 42. In terms of practical anti-counterfeiting means, the anti-counterfeiting pattern 42 can be any of the following: the fluorescent color of the quantum dot, the fluorescent wavelength of the quantum dot, the fluorescent intensity of the quantum dot, the graphic, the text, the letter, the number, and the A barcode (1D barcode), a 2D barcode, a Chinese-sensible code, a QR code, a matrix barcode (Maxicode), a combination of any two of the above, or a combination of any two or more of the above. It should be particularly noted that, as shown in the upper view of the security fabric shown in FIG. 10, the anti-counterfeiting pattern 42 can be woven by the quantum dot fibers 1 of the same color; of course, the quantum dot fibers 1 of different colors can be woven. The security pattern 42 (shown in Figure 8).

It is worth noting that if the fluorescent color of the quantum dot, the fluorescent wavelength of the quantum dot, and the fluorescent intensity of the quantum dot are used as anti-counterfeiting means, the anti-counterfeiting pattern woven by the plurality of quantum dot fibers must be irradiated with the ultraviolet lamp. 42. The wavelength composition and intensity of the fluorescent light emitted by the anti-counterfeiting pattern 42 are then analyzed using a spectrometer. Referring to the photoluminescence (PL) spectrum shown in FIG. 11A, the fluorescent light emitted by the display security pattern 42 includes a plurality of different colored lights, and the intensity of the colored lights is also different. Therefore, we can obtain a security code by encoding the plurality of light colors and the plurality of intensities. In addition, referring to the optical fluorescence spectrum shown in FIG. 11B, the fluorescent light emitted by the display security pattern 42 includes a plurality of monochromatic lights of different intensities, and the colors of the monochromatic lights are the same. Therefore, we can obtain a security code by encoding the different monochromatic lights and their corresponding intensities.

It should be noted that, if a hard substrate is used as the main body 41, the hard substrate may be a substrate that is easy to process such as a plastic substrate, a metal substrate, or a wood substrate. More creatively, as shown in the perspective view of the main body and the security pattern shown in FIG. 12, a light guide plate can be used as the main body 41, and the security pattern 42 is attached to the light guide plate. Further, when the security fabric 4 is applied to the product 5 having anti-counterfeiting requirements, an LED light strip 6 of an LED can be mounted simultaneously in the product 5 having the anti-counterfeiting requirement. In this way, the user only needs to illuminate the UV strip 6 of the LED, so that the anti-counterfeiting pattern 42 can be illuminated, thereby enabling anti-counterfeiting identification.

Thus, the above-mentioned system has completely and clearly explained the high-stability quantum dot fiber of the present invention and the security fabric having the high-stability quantum dot fiber; and, as described above, the present invention has the following advantages:

(1) Unlike conventional quantum dot fibers which exhibit poor stability and luminous efficiency, the present invention provides a highly stable quantum dot fiber 1 mainly composed of a plurality of quantum dots 11, a polymer sheath 12 And a sheath protective film 13 is formed. Specifically, the polymer sheath 12 is made of an ester polymer having a high glass transition temperature, and the sheath protective film 13 is made of an acrylic polymer having a low glass transition temperature. Among them, the low glass transition temperature of the acrylic polymer helps to improve the softness and corrosion resistance of the quantum dot fiber 1, thereby effectively preventing the yellowing of the polymer sheath 12 during storage or processing, thereby avoiding the passage of water and oxygen. The purpose of eroding quantum dots 11 by rayon polymers.

It is to be understood that the foregoing detailed description of the embodiments of the present invention is not intended to Both should be included in the scope of the patent in this case.

<present invention>

1‧‧‧ quantum dot fiber

11‧‧‧ Quantum dots

12‧‧‧ polymer sheath

13‧‧‧ Sheath protective film

112‧‧‧ compound core

113‧‧‧ inner shell

114‧‧‧Multiple structural outer shell

1141‧‧‧ base

1142‧‧‧Protruding

12a‧‧‧Ester monomer solution

13a‧‧‧Acrylic monomer solution

3‧‧‧ fiber masterbatch

2‧‧‧ masterbatch semi-finished products

10‧‧‧Polar core

14‧‧‧Hydrophilic nanoparticle

15‧‧‧ weathering layer

4‧‧‧Security fabric

5‧‧‧Products with anti-counterfeiting needs

41‧‧‧ Subject

42‧‧‧Anti-counterfeiting pattern

6‧‧‧LED UV strips

<知知>

1'‧‧‧Quantum point security fabric

11’‧‧‧ Subject

12’‧‧‧Anti-counterfeiting webbing

13’‧‧‧ security pattern

1A is a schematic view showing a quantum dot security fabric; FIG. 1B is a schematic view showing a quantum dot security fabric; FIG. 1C is a schematic view showing a quantum dot security fabric; and FIG. 2 is a first view showing a high stability quantum dot fiber of the present invention. 3 is a schematic structural view showing a quantum dot having a special non-spherical structure; FIG. 4A, FIG. 4B, and FIG. 4C are schematic views showing a process of the high-stability quantum dot fiber of the present invention; FIG. Figure 5B is a cross-sectional view showing a second embodiment of a high-stability quantum dot fiber of the present invention; Figure 6 is a cross-sectional view showing a third embodiment of a high-stability quantum dot fiber of the present invention; A cross-sectional view of a fourth embodiment of a high stability quantum dot fiber of the invention; Fig. 8 is a view showing the application of a security fabric of the present invention; Figs. 9A and 9B are perspective views showing a product having anti-counterfeiting requirements; Fig. 11A shows a photoluminescence (PL) spectrum; Fig. 11B shows a photoluminescence spectrum; Fig. 12 shows a main body and a security map It is shown in perspective in FIG.

Claims (18)

A high stability quantum dot fiber comprising: a polymer sheath; a plurality of quantum dots doped or coated in the polymer sheath; a sheath protective film covering the polymer sheath; and a plurality The hydrophilic nanoparticle is blended into the sheath protective film; wherein the hydrophilic nanoparticle can be made of any of the following: cerium oxide (Silica, SiO ₂ ) particles, titanium dioxide (Titania, TiO ₂ ) particles, methyl vinyl ether-maleic anhydride copolymer monoalkyl ester, polyvinyl pyrrolidone (PVP), or polyacrylate. The high stability quantum dot fiber according to claim 1, wherein the polymer sheath can be made of any of the following materials: polyester (polyester, PET), polyurethane (PU), polyvinyl chloride. (Poly (vinyl chloride), PVC), polypropylene (PP), or Polyamide (PA). The high stability quantum dot fiber according to claim 1, wherein the polymer sheath is made of a high molecular polymer, and the high molecular polymer contains a weight ratio (wt%) of at least 50. The silica material has a chemical structural formula of [Si(CH ₃ ) ₂ O] _n ; wherein the n system is between 50 and 100. The high stability quantum dot fiber according to claim 1, wherein the quantum dot can be any one of the following: a II-VI quantum dot, a III-V quantum dot, and a shell-core structure II. a Group VI quantum dot, a III-V quantum dot having a shell-core structure, an aspherical II-VI quantum dot having an alloy structure, a combination of any two of the above, or a combination of any two or more thereof. The high-stability quantum dot fiber according to claim 1, wherein the quantum dot is an aspherical quantum dot having an alloy structure, and the structure comprises: a compound core represented by a chemical formula M1A1; An inner shell surrounding the core of the compound and represented by the chemical formula M1 _x M2 _1-x A1 _y A2 _1-y ; and a multi-legged outer shell surrounding the inner shell by the chemical formula M1A2 or M2A2 Wherein: y is gradually decreased along a first direction from the surface of the compound core toward the surface of the inner shell layer, and 0 < x < 1 and 0 < y <1; the multi-legged outer shell layer The base portion and the plurality of protrusions are spaced apart from each other and extend from the base portion in a second direction away from the inner casing layer; M1 and M2 may be any of the following materials: Zn, Sn, Pb, Cd, In, Ga, Ge, Mn, Co, Fe, Al, Mg, Ca, Sr, Ba, Ni, Ag, Ti, or Cu; both A1 and A2 are any of the following materials: Se, S, Te, P , As, N, I, or O. The high-stability quantum dot fiber according to claim 1, wherein the sheath protective film is made of an acrylic polymer monomer having a low glass transition temperature. The high-stability quantum dot fiber according to claim 1, further comprising at least one polar core coated in the polymer sheath and used as a carrier of the plurality of quantum dots. The high-stability quantum dot fiber according to claim 1, further comprising a weather-resistant layer overlying the sheath protective film; wherein the weather-resistant layer can be made of any of the following materials : Fluorinated polymer or oxide. The high stability quantum dot fiber according to claim 7, wherein the polar core is a spherical core or a strip core; and the polar core can be made of any of the following: cerium oxide (Silica, SiO ₂ ), polymethylmethacrylate (PMMA), a surface modification of any of the above, a combination of any two of the above, or a combination of any two or more of the foregoing. A security fabric comprising: a body; and a security pattern disposed on the body and woven by a plurality of high stability quantum dot fibers; wherein each high stability quantum dot fiber system comprises: a polymer sheath; a plurality of quantum dots doped or coated in the polymer sheath; a sheath protective film covering the polymer sheath; and a plurality of hydrophilic nano particles mixed in the polymer sheath Within the sheath protective film; wherein the hydrophilic nanoparticle can be made of any of the following: cerium oxide (Silica, SiO ₂ ) particles, titanium dioxide (Titania, TiO ₂ ) particles, methyl vinyl ether - Maleic anhydride copolymer monoalkyl ester, polyvinyl pyrrolidone (PVP), or polyacrylate. The security fabric of claim 10, wherein the body can be any one of: a fabric substrate woven from a plurality of fibers, a paper substrate, or a rigid substrate. The anti-counterfeiting fabric of claim 10, wherein the anti-counterfeiting pattern can be any one of the following: a fluorescent color of a quantum dot, a fluorescent wavelength of a quantum dot, a fluorescent intensity of a quantum dot, a graphic, a text, Letters, numbers, 1D barcodes, 2D barcodes, Chinese-sensible codes, QR codes, matrix codes (Maxicode), combinations of the two, or both The combination of the above. The anti-counterfeiting fabric of claim 10, wherein the polymer sheath is made of any of the following materials: polyester (Polyester, PET), polyurethane (Polyurethane, PU), polyvinyl chloride (Poly (vinyl) Chloride), PVC), Polypropylene (PP), or Polyamide (PA). The anti-counterfeiting fabric of claim 10, wherein the quantum dot can be any of the following: a II-VI quantum dot, a III-V quantum dot, a II-VI quantum having a shell-core structure; a point, a III-V group quantum dot having a shell-core structure, an aspherical II-VI quantum dot having an alloy structure, a combination of any two of the above, or a combination of any two or more of the above. The anti-counterfeiting fabric of claim 10, wherein the quantum dot is an aspherical quantum dot having an alloy structure, the structure comprising: a compound core represented by a chemical formula M1A1; and an inner shell layer , surrounding the core of the compound, and represented by the chemical formula M1 _x M2 _1-x A1 _y A2 _1-y ; and a multi-legged outer shell layer surrounding the inner shell layer, represented by the chemical formula M1A2 or M2A2; : y is gradually decreased along a first direction from the surface of the compound core toward the surface of the inner shell layer, and 0 < x < 1 and 0 < y <1; the multi-legged outer shell layer has a base and a plurality a plurality of protrusions, and the plurality of protrusions are spaced apart from each other and extend from the base in a second direction away from the inner shell layer; M1 and M2 may be any of the following materials: Zn, Sn, Pb, Cd, In, Ga, Ge, Mn, Co, Fe, Al, Mg, Ca, Sr, Ba, Ni, Ag, Ti, or Cu; both A1 and A2 are any of the following materials: Se, S, Te, P, As, N , I, or O. The security fabric of claim 10, wherein the sheath protective film is made of an acrylic polymer monomer having a low glass transition temperature. The anti-counterfeiting fabric of claim 10, further comprising at least one polar core as a carrier of the plurality of quantum dots; and the polar core is a spherical core or a strip core. The anti-counterfeiting fabric of claim 10, further comprising a weather-resistant layer overlying the sheath protective film; wherein the weather-resistant layer can be manufactured by any of the following: fluorination polymerization Or an oxide.