CN118291081A - Anti-counterfeiting glue and anti-counterfeiting detection method thereof - Google Patents

Anti-counterfeiting glue and anti-counterfeiting detection method thereof Download PDF

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Publication number
CN118291081A
CN118291081A CN202311725229.7A CN202311725229A CN118291081A CN 118291081 A CN118291081 A CN 118291081A CN 202311725229 A CN202311725229 A CN 202311725229A CN 118291081 A CN118291081 A CN 118291081A
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China
Prior art keywords
glue
counterfeiting
fluorescent
magnetic
curing
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CN202311725229.7A
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Chinese (zh)
Inventor
王允军
杜满新
陈历历
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Suzhou Xingshuo Nanotech Co Ltd
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Suzhou Xingshuo Nanotech Co Ltd
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Priority to CN202311725229.7A priority Critical patent/CN118291081A/en
Publication of CN118291081A publication Critical patent/CN118291081A/en
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Abstract

The invention relates to the technical field of glue detection and discloses anti-counterfeiting glue and an anti-counterfeiting detection method thereof. The anti-counterfeiting detection method of the glue comprises the process of detecting whether fluorescence and/or magnetism exists in the glue. When the glue contains anti-counterfeiting particles with fluorescence performance, only light irradiation is needed, fluorescence can be emitted from the glue, and therefore the glue with the same appearance is distinguished; similarly, when the glue contains magnetic anti-counterfeiting particles, only a magnetic field is needed to be applied to the glue to see whether the glue contains enriched particles, so that the glue with the same appearance can be distinguished; when the anti-counterfeiting particles in the glue have both fluorescence and magnetism, the glue with the same appearance can be distinguished by using the fluorescence effect and the magnetism enrichment effect.

Description

Anti-counterfeiting glue and anti-counterfeiting detection method thereof
Technical Field
The invention belongs to the technical field of glue detection, and particularly relates to anti-counterfeiting glue and an anti-counterfeiting detection method thereof.
Background
Glue is an intermediate for connecting two materials, and is mostly available in water, belonging to the class of fine chemical industry and various types. According to the main component classification, there are mainly acrylic type, epoxy type, polysulfide type, polyurethane type, silica gel type, UV curing type, and the like glues.
At present, no matter what type of glue is on the market, the sources of the glue with the same color system (such as transparent glue) cannot be distinguished from the appearance, the authenticity cannot be distinguished, and the phenomena of stretching the articles of plum and confusing the market are easy to occur.
In view of this, the anti-counterfeiting glue and the anti-counterfeiting detection method thereof enable the public to easily distinguish glue with the same appearance, and avoid counterfeiting.
Disclosure of Invention
The invention aims to provide anti-counterfeiting glue and an anti-counterfeiting detection method thereof, so that the public can easily distinguish glue with the same appearance, and counterfeiting is avoided.
According to a first aspect of the invention, an anti-counterfeiting glue is provided, which is characterized by comprising a glue body and anti-counterfeiting particles dispersed in the glue body, wherein the anti-counterfeiting particles have fluorescence and/or magnetism. When the glue contains anti-counterfeiting particles with fluorescence performance, only light irradiation is needed, fluorescence can be emitted from the glue, and therefore the glue with the same appearance is distinguished; similarly, when the glue contains the anti-counterfeiting particles with magnetism, only a magnetic field is applied to the glue to see whether the glue contains enriched particles, so that the glue with the same appearance can be distinguished. When the anti-counterfeiting particles in the glue have fluorescence performance and magnetic performance, the glue with the same appearance can be distinguished by utilizing the fluorescence effect and the magnetic enrichment effect, and after the anti-counterfeiting particles have magnetism, the anti-counterfeiting particles can be enriched, so that the enriched anti-counterfeiting particles are convenient to remove from the glue, and the normal use of the glue is not affected completely. In order to be able to remove the security particles from the glue, the security particles preferably have a size of 100nm to 500nm.
As a preferable scheme of the anti-counterfeiting glue, the anti-counterfeiting particles comprise a fluorescent layer and/or a magnetic layer, and the fluorescent layer comprises a fluorescent material coated in a curing material; the magnetic layer comprises a magnetic material coated in a solidified material. The fluorescent material and/or the magnetic material are/is wrapped by the curing material, so that the failure caused by the influence of components in the glue on the fluorescent material or the magnetic material is avoided.
As a preferable scheme of the anti-counterfeiting glue, the anti-counterfeiting particles comprise a fluorescent layer, a magnetic layer and a fluorescent layer which are sequentially arranged. Namely, the anti-counterfeiting particles are of a sandwich structure, so that fluorescence can be generated when illumination is conducted on the glue from all angles.
As a preferable scheme of the anti-counterfeiting glue, the magnetic material is wrapped with an inorganic layer;
Preferably, the inorganic layer is selected from at least one of a silicon-containing oxide, an aluminum-containing oxide, a zirconium-containing oxide, a titanium-containing oxide, a hafnium-containing oxide, or an yttrium-containing oxide. The magnetic material carried by the inorganic layer can be stably dispersed in the solidified material, so that the magnetic material is prevented from leaking.
As a preferable scheme of the anti-counterfeiting glue, the fluorescent material comprises at least one of fluorescent nanoparticles, fluorescein, fluorescent polymer and organic fluorescent molecules;
preferably, the fluorescent nanoparticle comprises at least one of a carbon dot, a quantum dot, a nanorod, or a nanoplatelet.
As a preferable scheme of the anti-counterfeiting glue, the magnetic material comprises metal and metal oxide with superparamagnetism, paramagnetic or ferromagnetic properties;
Preferably, the magnetic material is selected from Fe3O4、Fe2O3、CoFe2O4、MnFe2O4、NiFe2O4、 compounds neodymium iron boron, samarium cobalt, metal Fe, co, ni and one of metal oxides of alloy Fe 2Co、Ni2 Fe.
As a preferable scheme of the anti-counterfeiting glue, the preparation method of the anti-counterfeiting particles comprises the following steps:
s1, mixing a fluorescent material with a curing material, and curing to form a fluorescent curing material; and/or
S2, mixing the magnetic material with a curing material, and curing to form a magnetic curing material;
s3, granulating the fluorescent curing material and/or the magnetic curing material;
Preferably, the curing material is a photo-curing glue or a thermosetting glue.
Photo-curable glues such as ultraviolet curing UV glue; heat curable glue such as heat curable epoxy.
As a preferable scheme of the anti-counterfeiting glue, a mixture of a magnetic material and a curing material is coated on the fluorescent curing material for curing;
preferably, after the magnetic curing material is formed on the fluorescent curing material, a mixture of the fluorescent material and the curing material is coated on the magnetic curing material and cured.
As a preferable scheme of the anti-counterfeiting glue, in the fluorescent curing material, the mass ratio of the fluorescent material to the curing material is (1-4): 5, a step of; in the magnetic curing material, the mass ratio of the magnetic material to the curing material is (1-3): 5. the inventor discovers that the glue has better fluorescence and/or magnetism effect through the design of the proportion.
The second aspect of the invention provides a glue anti-counterfeiting detection method, which is characterized in that: including a process of detecting the presence of fluorescence and/or magnetism in the glue.
Compared with the prior art, the invention has at least the following advantages:
1. When the glue contains anti-counterfeiting particles with fluorescence performance, only light irradiation is needed, fluorescence can be emitted from the glue, and therefore the glue with the same appearance is distinguished; similarly, when the glue contains magnetic anti-counterfeiting particles, only a magnetic field is needed to be applied to the glue to see whether the glue contains enriched particles, so that the glue with the same appearance can be distinguished; when the anti-counterfeiting particles in the glue have fluorescence performance and magnetic performance, the glue with the same appearance can be distinguished by utilizing the fluorescence effect and the magnetic enrichment effect, and after the anti-counterfeiting particles have magnetism, the anti-counterfeiting particles can be enriched, so that the enriched anti-counterfeiting particles are convenient to remove from the glue, and the normal use of the glue is not affected completely.
2. Aiming at the application environment of glue, the anti-counterfeiting particles are preferably in a sandwich structure, and the magnetic layer is wrapped between the two fluorescent layers, so that the influence of the glue on magnetism is avoided, and the enrichment of the anti-counterfeiting particles is not easy.
3. The fluorescent material is fixedly sealed in the photo-curing glue or the thermosetting glue, the nature of the curing material is the glue, and the glue to be anti-counterfeiting cannot be influenced as the environment property of the applied glue is similar.
4. The glue detection method is simple, and the authenticity and the source of the glue can be judged by judging whether anti-counterfeiting particles exist in the glue through fluorescence and/or magnetism.
Drawings
The foregoing and other features of the present disclosure will be more fully described when considered in conjunction with the following drawings. It is appreciated that these drawings depict only several embodiments of the present disclosure and are therefore not to be considered limiting of its scope. The present disclosure will be described more specifically and in detail by using the accompanying drawings.
FIG. 1 is an effect diagram of illumination of glue;
FIG. 2 is a graph showing the effect of applying a magnetic field to glue;
fig. 3 is a graph showing the effect of both illuminating the glue and applying a magnetic field to the glue.
Detailed Description
The following examples are described to aid in the understanding of the invention and are not, nor should they be construed in any way to limit the scope of the invention.
At least one of the "when preceding or following a list of elements" as for example "is described herein modifies the entire list of elements without modifying individual elements of the list. Unless otherwise defined, all terms (including technical and scientific terms) in the specification can be defined as commonly understood by one of ordinary skill in the art. Terms defined in commonly used dictionaries should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. Furthermore, unless expressly stated to the contrary, the words "comprise" and the words "comprising" when used in this specification mean the presence of stated features, regions, integers, steps, operations, elements, and/or components, but does not preclude the presence or addition of one or more other features, regions, integers, steps, operations, elements, components, and/or groups thereof. Accordingly, the above phraseology is to be understood as meaning to include the stated elements, but not to exclude any other elements.
As mentioned in the background art, no matter what type of glue is currently available in the market, the source of the glue with the same color system (such as transparent glue) cannot be distinguished from the appearance, and the authenticity cannot be distinguished, so that the situation that the market is confused due to the fact that the person wears the transparent glue is easy to occur.
In a first aspect of the present invention, an anti-counterfeiting glue is provided, which comprises a glue body and anti-counterfeiting particles dispersed in the glue body, wherein the anti-counterfeiting particles have fluorescence and/or magnetism. When the glue contains anti-counterfeiting particles with fluorescence performance, only light irradiation is needed, fluorescence can be emitted from the glue, and therefore the glue with the same appearance is distinguished; similarly, when the glue contains the anti-counterfeiting particles with magnetism, only a magnetic field is applied to the glue to see whether the glue contains enriched particles, so that the glue with the same appearance can be distinguished. When the anti-counterfeiting particles in the glue have fluorescence performance and magnetic performance, the glue with the same appearance can be distinguished by utilizing the fluorescence effect and the magnetic enrichment effect, and after the anti-counterfeiting particles have magnetism, the anti-counterfeiting particles can be enriched, so that the enriched anti-counterfeiting particles are convenient to remove from the glue, and the normal use of the glue is not affected completely. In order to be able to remove the security particles from the glue, the security particles preferably have a size of 100nm to 500nm.
In some embodiments, the security particles comprise a fluorescent layer comprising a fluorescent material encapsulated in a cured material and/or a magnetic layer; the magnetic layer comprises a magnetic material coated in a solidified material. The fluorescent material and/or the magnetic material are/is wrapped by the curing material, so that the failure caused by the influence of components in the glue on the fluorescent material or the magnetic material is avoided.
As a preferable scheme of the anti-counterfeiting glue, the anti-counterfeiting particles comprise a fluorescent layer, a magnetic layer and a fluorescent layer which are sequentially arranged. Namely, the anti-counterfeiting particles are of a sandwich structure, so that fluorescence can be generated when illumination is conducted on the glue from all angles.
As a preferable scheme of the anti-counterfeiting glue, the magnetic material is wrapped with an inorganic layer;
Preferably, the inorganic layer is selected from at least one of a silicon-containing oxide, an aluminum-containing oxide, a zirconium-containing oxide, a titanium-containing oxide, a hafnium-containing oxide, or an yttrium-containing oxide. The magnetic material carried by the inorganic layer can be stably dispersed in the solidified material, so that the magnetic material is prevented from leaking. The inorganic material has good water and oxygen blocking performance, and the effect of the inorganic material is to protect the magnetic material and reduce damage to the magnetic material by the external environment, and the inorganic material comprises, but is not limited to, silicon-containing oxide, aluminum-containing oxide, zirconium-containing oxide, titanium-containing oxide, hafnium-containing oxide or yttrium-containing oxide, and the like, and particularly silicon dioxide, titanium dioxide and the like.
As a preferable scheme of the anti-counterfeiting glue, the fluorescent material comprises at least one of fluorescent nanoparticles, fluorescein, fluorescent polymer and organic fluorescent molecules;
preferably, the fluorescent nanoparticle comprises at least one of a carbon dot, a quantum dot, a nanorod, or a nanoplatelet. The quantum dot comprises at least one of group IIB-VIA, group IIIA-VA, group IVA-VIA, group IVA, group IB-IIIA-VIA, group VIII-VIA, perovskite material and carbon quantum dot. For example, the group II-VI compound can include :CdSe、CdTe、ZnS、ZnSe、ZnTe、ZnO、HgS、HgSe、HgTe、MgSe、MgS、CdSeS、CdSeTe、CdSTe、ZnSeS、ZnSeTe、ZnSTe、HgSeS、HgSeTe、HgSTe、CdZnS、CdZnSe、CdZnTe、CdHgS、CdHgSe、CdHgTe、HgZnS、HgZnSe、HgZnTe、MgZnSe、MgZnS、HgZnTeS、CdZnSeS、CdZnSeTe、CdZnSTe、CdHgSeS、CdHgSeTe、CdHgSTe、HgZnSeS、HgZnSeTe、HgZnSTe or a combination thereof. The III-V compounds may include :GaN、GaP、GaAs、GaSb、AlN、AlP、AlAs、AlSb、InN、InP、InAs、InSb、GaNP、GaNAs、GaNSb、GaPAs、GaPSb、AlNP、AlNAs、AlNSb、AlPAs、AlPSb、InNP、InNAs、InNSb、InPAs、InPSb、InZnP、GaAlNP、GaAlNAs、GaAlNSb、GaAlPAs、GaAlPSb、GaInNP、GaInNAs、GaInNSb、GaInPAs、GaInPSb、InAlNP、InAlNAs、InAlNSb、InAlPAs、InAlPSb or combinations thereof. Quantum dots include nanocrystals having a homogeneous or substantially homogeneous composition, e.g., a core, as well as heterogeneous nanocrystals, such as core/shell quantum dots comprising a core and one or more shells surrounding the core. A shell is defined as a material surrounding a core and may include one or more shell layers. The metal oxide includes: zn, cr, co, dy, er, eu, fe, gd, gd, pr, nd, ni, in, pr, sm, tb, tm, and combinations thereof. The fluorescent polymer has a functional group (such as fluorescein) capable of emitting fluorescence and monomers capable of polymerizing, and the monomers are polymerized or polymerized with other monomers which do not contain fluorescence, so that the fluorescent polymer is prepared. Fluorescein includes, but is not limited to, stilbenes, coumarins, fluorans (xanthenes), benzoxazoles (including imidazoles, thiazoles), naphthalimides, thiophenedicarboxylamides, polycyclic aromatic hydrocarbons (fluoranthenes), perylenetetracarboxylic imides, phycoerythrins, polymethylchlorophyll proteins, and the like; the fluorescent polymer has a fluorescent functional group in its structure, and common fluorescent groups include, but are not limited to, stilbenes, coumarins, fluorans (xanthenes), benzoxazoles (including imidazoles, thiazoles), naphthalimides, thiophenedicarboxylic amides, polycyclic aromatic hydrocarbons (fluoranthenes), perylenetetracarboxylic imides, and the like, and monomers for synthesizing a fluorescent polymer include: fluorescent polymers are prepared from fluorescein isothiocyanate, tetramethyl isothiocyanamine, heme, rhodamine B, 5 (6) -carboxyl tetramethyl rhodamine, rhodamine 6G, rhodamine 123, rhodamine 101, fluorescein, herste fluorescent dye, 4', 6-diamidino-2-phenylindole, copper phthalocyanine disulfonic acid, dihydroxysilicon phthalocyanine, scarlet acid and the like which have reactive groups such as amino groups, hydroxyl groups, mercapto groups, carboxyl groups, sulfonic acid groups, isothiocyanate groups, acyl chloride groups, sulfonyl chloride groups, epoxy groups and the like, and are polymerized or polymerized with other monomers which do not contain fluorescence. The organic fluorescent dye includes: fluorescein (stilbenes, coumarin, fluoran, benzoxazole, naphthalimide, thiophene dicarboxylic acid amide, polycyclic aromatic hydrocarbon, perylene tetracarboxylic imide, etc.), aromatic condensed ring compounds, intramolecular charge transfer compounds, metal complex fluorescent materials, enzymes, rare earth metal chelates.
In some embodiments, the magnetic material comprises a metal and a metal oxide having superparamagnetic, paramagnetic, or ferromagnetic properties;
Preferably, the magnetic material is selected from Fe3O4、Fe2O3、CoFe2O4、MnFe2O4、NiFe2O4、 compounds neodymium iron boron, samarium cobalt, metal Fe, co, ni and one of metal oxides of alloy Fe 2Co、Ni2 Fe.
In some embodiments, the method of making the security particle comprises the steps of:
s1, mixing a fluorescent material with a curing material, and curing to form a fluorescent curing material; and/or
S2, mixing the magnetic material with a curing material, and curing to form a magnetic curing material;
s3, granulating the fluorescent curing material and/or the magnetic curing material;
Preferably, the curing material is a photo-curing glue or a thermosetting glue.
Photo-curable glues such as ultraviolet curing UV glue; heat curable glue such as heat curable epoxy.
As a preferable scheme of the anti-counterfeiting glue, a mixture of a magnetic material and a curing material is coated on the fluorescent curing material for curing;
preferably, after the magnetic curing material is formed on the fluorescent curing material, a mixture of the fluorescent material and the curing material is coated on the magnetic curing material and cured.
In some embodiments, the mass ratio of the fluorescent material to the cured material in the fluorescent cured material is (1-4): 5, a step of; in the magnetic curing material, the mass ratio of the magnetic material to the curing material is (1-3): 5. the inventor discovers that the glue has better fluorescence and/or magnetism effect through the design of the proportion.
In a second aspect of the present invention, a method for anti-counterfeit detection of glue is provided, which comprises a process of detecting whether fluorescence and/or magnetism exists in the glue. When fluorescence is detected in the glue, the glue can be magnetically attracted to the anti-counterfeiting particles, or fluorescence is detected at the same time, and the anti-counterfeiting particles can be magnetically attracted, so that anti-counterfeiting identification can be performed on the glue.
The present invention will be described in further detail with reference to specific examples and comparative examples, but the present invention is not limited to the following examples, and the implementation conditions adopted in the examples may be further adjusted according to different requirements of specific use, and the conditions not specified are conventional conditions in the industry.
Example 1:
Taking 2 parts of ferric chloride hexahydrate, 1 part of sodium acetate, 1 part of sodium citrate and 150 parts of ethylene glycol according to the mass amount, reacting in a stainless steel reaction kettle at 200 ℃ for 12 hours, taking out after the reaction is finished, and washing with deionized water and ethanol for a plurality of times to obtain the ferroferric oxide. According to the magnitude of substances, 1 part of ferroferric oxide, 2 parts of ammonia water, 100 parts of ethanol and 100 parts of deionized water are taken in a glass reaction kettle, a stirrer is started, the rotating speed is set at 300rpm, then 10 parts of tetraethyl silicate is slowly poured in, after the reaction is finished for 3 hours, the solvent is poured out, and the ferroferric oxide after silicon coating is obtained after the solvent is washed with ethanol and deionized water for several times.
200Mg of sodium fluorescein and 500mg of ultraviolet UV glue (the main components are polyurethane acrylate prepolymer, acrylate monomer, initiator and the like) are taken and uniformly mixed, and UV is cured to form a fluorescent layer. Mixing 150mg of the silicon-coated ferroferric oxide and 500mg of Ultraviolet (UV) glue uniformly, coating on a fluorescent layer, carrying out UV curing, forming a magnetic layer on the fluorescent layer to form a double-layer structure curing material, and crushing the curing material into particles to prepare anti-counterfeiting particles.
The anti-counterfeiting particles are dispersed into glue (any commercially available glue) to form the anti-counterfeiting glue.
Example 2
Taking 2 parts of ferric chloride hexahydrate, 1 part of sodium acetate, 1 part of sodium citrate and 150 parts of ethylene glycol according to the mass amount, reacting in a stainless steel reaction kettle at 200 ℃ for 12 hours, taking out after the reaction is finished, and washing with deionized water and ethanol for a plurality of times to obtain the ferroferric oxide. According to the magnitude of substances, 1 part of ferroferric oxide, 2 parts of ammonia water, 100 parts of ethanol and 100 parts of deionized water are taken in a glass reaction kettle, a stirrer is started, the rotating speed is set at 300rpm, then 10 parts of tetraethyl silicate is slowly poured in, after the reaction is finished for 3 hours, the solvent is poured out, and the ferroferric oxide after silicon coating is obtained after the solvent is washed with ethanol and deionized water for several times.
200Mg of sodium fluorescein and 500mg of ultraviolet UV glue (the main components are polyurethane acrylate prepolymer, acrylate monomer, initiator and the like) are taken and uniformly mixed, and UV is cured to form a fluorescent layer. Mixing 150mg of the silicon-coated ferroferric oxide and 500mg of ultraviolet/UV glue uniformly, coating on a fluorescent layer, and performing UV curing to form a magnetic layer on the fluorescent layer. Mixing 200mg of sodium fluorescein and 500mg of Ultraviolet (UV) glue uniformly, curing by UV to form a three-layer structure curing material, and crushing the curing material into particles to prepare anti-counterfeiting particles.
The anti-counterfeiting particles are dispersed into glue (any commercially available glue) to form the anti-counterfeiting glue.
When judging whether the glue with no difference in appearance is anti-counterfeiting glue or not, only irradiating with light, and emitting fluorescence in the glue, as shown in fig. 1, namely the anti-counterfeiting glue; or applying a magnetic field to the glue, and observing that the glue has enriched particles, as shown in figure 2, namely the anti-counterfeiting glue. Of course, the glue can be illuminated and magnetic field is applied at the same time, and fluorescent light and enriched particles are observed in the glue, as shown in fig. 3, so that the anti-counterfeiting glue is obtained. The anti-counterfeiting particles of the embodiment 1 are added into the glue shown in fig. 1-3, and the anti-counterfeiting particles of the embodiment 2 are added into the glue, so that the detection method is the same.
While the invention has been disclosed in terms of various aspects and embodiments, other aspects and embodiments will be apparent to those skilled in the art in view of this disclosure, and many changes and modifications can be made without departing from the spirit of the invention. The various aspects and embodiments of the present invention are disclosed for illustrative purposes only and are not intended to limit the invention, the true scope of which is set forth in the following claims.

Claims (10)

1. The anti-counterfeiting glue is characterized by comprising a glue body and anti-counterfeiting particles dispersed in the glue body, wherein the anti-counterfeiting particles have fluorescence and/or magnetism;
Preferably, the size of the anti-counterfeiting particles is 100nm-500nm.
2. The anti-counterfeiting glue according to claim 1, wherein the anti-counterfeiting particles comprise a fluorescent layer and/or a magnetic layer, the fluorescent layer comprising a fluorescent material coated in a cured material; the magnetic layer comprises a magnetic material coated in a solidified material.
3. The anti-counterfeiting glue according to claim 2, wherein the anti-counterfeiting particles comprise a fluorescent layer, a magnetic layer and a fluorescent layer which are sequentially arranged.
4. A tamper-evident glue as claimed in claim 2 or 3, wherein the magnetic material is coated with an inorganic layer;
preferably, the inorganic layer is selected from at least one of a silicon-containing oxide, an aluminum-containing oxide, a zirconium-containing oxide, a titanium-containing oxide, a hafnium-containing oxide, or an yttrium-containing oxide.
5. The anti-counterfeiting glue according to claim 2 or 3, wherein the fluorescent material comprises at least one of fluorescent nanoparticles, fluorescein, fluorescent polymers, and organic fluorescent molecules;
preferably, the fluorescent nanoparticle comprises at least one of a carbon dot, a quantum dot, a nanorod, or a nanoplatelet.
6. A tamper-evident glue according to claim 2 or 3, wherein the magnetic material comprises a metal and metal oxide having superparamagnetic, paramagnetic or ferromagnetic properties;
Preferably, the magnetic material is selected from Fe3O4、Fe2O3、CoFe2O4、MnFe2O4、NiFe2O4、 compounds neodymium iron boron, samarium cobalt, metal Fe, co, ni and one of metal oxides of alloy Fe 2Co、Ni2 Fe.
7. A tamper-evident glue as claimed in claim 2 or 3, wherein the method of preparing the tamper-evident particles comprises the steps of:
s1, mixing a fluorescent material with a curing material, and curing to form a fluorescent curing material; and/or
S2, mixing the magnetic material with a curing material, and curing to form a magnetic curing material;
s3, granulating the fluorescent curing material and/or the magnetic curing material;
Preferably, the curing material is a photo-curing glue or a thermosetting glue.
8. The anti-counterfeiting glue according to claim 7, wherein a mixture of a magnetic material and a curing material is coated on the fluorescent curing material and cured;
preferably, after the magnetic curing material is formed on the fluorescent curing material, a mixture of the fluorescent material and the curing material is coated on the magnetic curing material and cured.
9. The anti-counterfeiting glue according to claim 7, wherein in the fluorescent curing material, the mass ratio of the fluorescent material to the curing material is (1-4): 5, a step of; in the magnetic curing material, the mass ratio of the magnetic material to the curing material is (1-3): 5.
10. A glue anti-counterfeiting detection method is characterized by comprising the following steps of: including a process of detecting the presence of fluorescence and/or magnetism in the glue.
CN202311725229.7A 2023-12-15 2023-12-15 Anti-counterfeiting glue and anti-counterfeiting detection method thereof Pending CN118291081A (en)

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CN202311725229.7A CN118291081A (en) 2023-12-15 2023-12-15 Anti-counterfeiting glue and anti-counterfeiting detection method thereof

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Application Number Priority Date Filing Date Title
CN202311725229.7A CN118291081A (en) 2023-12-15 2023-12-15 Anti-counterfeiting glue and anti-counterfeiting detection method thereof

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CN118291081A true CN118291081A (en) 2024-07-05

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