Anti-counterfeiting material, preparation method thereof and anti-counterfeiting down feather

Abstract

The invention discloses an anti-counterfeiting material, a preparation method thereof and anti-counterfeiting down feather, and relates to the technical field of down feather anti-counterfeiting. The anti-counterfeiting material is prepared from the following components in parts by weight: 10-20 parts of polymer microspheres; 5 to 10 parts of a surfactant; 15-25 parts of a film forming agent; 3-8 parts of a plasticizer; 2-5 parts of a dispersant; 30 to 40 parts of a solvent; the polymer microspheres are prepared from a mixture of nano titanium dioxide and nano zinc oxide, and polythiophene and derivatives thereof through in-situ polymerization. Soaking the down feather in a weakly alkaline solution, washing the down feather with clear water, and drying the down feather; and immersing the down feather into an anti-counterfeiting material, taking out the down feather, and airing to obtain the anti-counterfeiting down feather. The polymer microspheres can emit high-brightness fluorescence under the irradiation of infrared light, the unique anti-counterfeiting feature cannot be perceived under common illumination and can only be recognized through specific infrared detection equipment, and the anti-counterfeiting reliability and concealment are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of down anti-counterfeiting, and in particular to an anti-counterfeiting material and a preparation method thereof, and anti-counterfeiting down. Background Art

[0002] As the down product market continues to expand, counterfeit and shoddy products are increasingly rampant. Traditional anti-counterfeiting methods, such as labels and QR codes, are easily copied or damaged, and it is difficult to meet the demand for high-quality and high-security anti-counterfeiting of down products. Developing a reliable, unique and difficult-to-copy anti-counterfeiting technology is crucial to protecting consumer rights and maintaining market order.

[0003] Infrared anti-counterfeiting technology has gradually attracted attention due to its good concealment and difficulty in detection and cracking. However, when used in down, existing infrared anti-counterfeiting materials have problems such as weak bonding with down and affecting the warmth retention and fluffiness of down, which limits its application in the field of down products. Summary of the invention

[0004] In order to solve at least one of the above technical problems, an anti-counterfeiting material for down is developed which has little impact on the performance of down, has certain infrared anti-counterfeiting performance, and has high anti-counterfeiting durability. The present application provides an anti-counterfeiting material, a preparation method thereof, and anti-counterfeiting down.

[0005] In one aspect, the present application provides an anti-counterfeiting material, which is prepared by including the following components in parts by weight:

[0006] 10-20 parts of polymer microspheres;

[0007] 5-10 parts of surfactant;

[0008] 15-25 parts of film-forming agent;

[0009] 3 to 8 parts of plasticizer;

[0010] 2 to 5 parts of dispersant;

[0011] 30-40 parts of solvent;

[0012] The polymer microspheres are prepared by in-situ polymerization of a mixture of nano titanium dioxide and nano zinc oxide and polythiophene and its derivatives.

[0013] Optionally, in the mixture of nano-titanium dioxide and nano-zinc oxide, the weight ratio of nano-titanium dioxide to nano-zinc oxide is 1 to 3:1.

[0014] Optionally, the preparation method of the polymer microspheres is: mixing nano titanium dioxide and nano zinc oxide, dissolving the mixture with thiophene monomer in an organic solvent, adding an initiator, and reacting under nitrogen protection; after the reaction, removing unreacted monomers and impurities to obtain polymer microspheres.

[0015] Optionally, the weight ratio of the total amount of the nano-titanium dioxide and nano-zinc oxide added to the amount of the thiophene monomer added is 1:2-5.

[0016] Optionally, the particle size of the polymer microspheres is 0.1-1 μm.

[0017] Optionally, the solvent is a mixture of water and ethanol, and the volume ratio of water to ethanol is 1 to 3:1.

[0018] Optionally, the surfactant is a nonionic surfactant;

[0019] And / or, the film-forming agent is a water-based polyurethane resin;

[0020] And / or, the plasticizer is diisooctyl phthalate;

[0021] And / or, the dispersant is polyacrylic acid sodium salt.

[0022] In the second aspect, the present application provides a method for preparing the above-mentioned anti-counterfeiting material. Under stirring conditions, a surfactant, a film-forming agent, a plasticizer and a dispersant are added to a solvent in sequence, the stirring speed is 300 to 500 r / min, and the stirring time is 30 to 60 min; polymer microspheres are slowly added to the above-mentioned mixed solution, and stirring is continued for 2 to 3 hours at a stirring speed of 100 to 200 r / min. The mixture is mixed evenly to obtain an anti-counterfeiting material.

[0023] In a third aspect, the present application provides a method for preparing anti-counterfeiting down, comprising the following steps:

[0024] S1. Down pretreatment

[0025] Soak the down in a weak alkaline solution for 10 to 15 minutes, then rinse with clean water and dry at 50 to 60°C.

[0026] S2. Impregnation treatment

[0027] Immerse the pretreated down in the anti-counterfeiting material and stir continuously for 20 to 30 minutes;

[0028] S3. Drying

[0029] After impregnation, take out the down and dry it under natural ventilation conditions for 2 to 3 hours, and then dry it at 40 to 50°C for 1 to 2 hours.

[0030] In a fourth aspect, the present application provides an anti-counterfeiting down, which is prepared by the above-mentioned preparation method.

[0031] In summary, the present invention includes at least one of the following beneficial technical effects:

[0032] 1. The polymer microspheres can emit bright fluorescence under infrared light. The unique anti-counterfeiting feature cannot be detected under ordinary light and can only be identified by specific infrared detection equipment, which greatly improves the reliability and concealment of anti-counterfeiting;

[0033] 2. Reasonable selection of ingredients and optimization of preparation process. The film formed by the film-forming agent has good air permeability and flexibility, and will not block the gaps between down fibers, thus ensuring that the warmth retention and fluffiness of the down are not significantly affected. After testing, the warmth retention and fluffiness of the treated down decreased less than that of the untreated down;

[0034] 3. The anti-counterfeiting material is firmly bonded to the down through chemical bonds and physical adsorption. During the daily use and washing of down products, the anti-counterfeiting material is not easy to fall off and can maintain the anti-counterfeiting effect for a long time;

[0035] 4. The solvent used is a mixed solution of water and ethanol. All components are non-toxic and harmless, meet environmental protection requirements, and will not cause harm to human health and the environment. DETAILED DESCRIPTION

[0036] The present application is further described in detail below with reference to the embodiments.

[0037] In the following examples of the present application, the main components involved, unless otherwise specified, were purchased from commercially available products.

[0038] Surfactant: polyoxyethylene sorbitan fatty acid ester (polysorbate) is exemplified;

[0039] The film-forming agent is exemplarily a water-based polyurethane resin;

[0040] The plasticizer is exemplified by diisooctyl phthalate;

[0041] The dispersant is exemplified by sodium polyacrylic acid;

[0042] Solvent: A mixture of water and ethanol is exemplarily used, and the volume ratio of water to ethanol is 2:1. Specific embodiments

[0044] Preparation Example

[0045] 1 part by weight of nano titanium dioxide and 1 part by weight of nano zinc oxide were mixed, and then dissolved with 5 parts by weight of thiophene monomer in an organic solvent, 0.1 parts by weight of initiator (azobisisobutyronitrile) were added, and the mixture was reacted at 60° C. for 8 hours under nitrogen protection; after the reaction, unreacted monomers and impurities were removed by dialysis to obtain polymer microspheres.

[0046] Example 1

[0047] Under stirring conditions, 5 parts by weight of a surfactant, 25 parts by weight of a film-forming agent, 8 parts by weight of a plasticizer and 2 parts by weight of a dispersant are sequentially added to 30 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 10 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0048] Example 2

[0049] Under stirring conditions, 8 parts by weight of a surfactant, 20 parts by weight of a film-forming agent, 7 parts by weight of a plasticizer and 3 parts by weight of a dispersant are sequentially added to 35 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 12 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0050] Example 3

[0051] Under stirring conditions, 10 parts by weight of a surfactant, 15 parts by weight of a film-forming agent, 6 parts by weight of a plasticizer and 4 parts by weight of a dispersant are sequentially added to 40 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 14 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0052] Example 4

[0053] Under stirring conditions, 5 parts by weight of a surfactant, 15 parts by weight of a film-forming agent, 5 parts by weight of a plasticizer and 5 parts by weight of a dispersant are sequentially added to 30 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 16 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0054] Example 5

[0055] Under stirring conditions, 8 parts by weight of a surfactant, 20 parts by weight of a film-forming agent, 4 parts by weight of a plasticizer and 2 parts by weight of a dispersant are sequentially added to 35 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 18 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0056] Example 6

[0057] Under stirring conditions, 10 parts by weight of a surfactant, 25 parts by weight of a film-forming agent, 3 parts by weight of a plasticizer and 5 parts by weight of a dispersant are sequentially added to 40 parts by weight of a solvent at a stirring speed of 300 r / min for 45 min; 20 parts by weight of the polymer microspheres prepared in the above preparation example are slowly added to the above mixed solution, and stirring is continued for 3 hours at a stirring speed of 100 r / min. Mix well to obtain an anti-counterfeiting material.

[0058] Application Examples 1 to 6 The anti-counterfeiting materials prepared in the above Examples 1 to 6 are exemplarily used to treat down by the following method to prepare anti-counterfeiting down.

[0059] The preparation method is: soak the down in a weak alkaline solution (sodium carbonate solution with a pH value of 8) for 12 minutes, then rinse it with clean water, and then dry it at 50°C; immerse the pretreated down in the anti-counterfeiting material and stir it continuously for 30 minutes; after the impregnation is completed, take out the down, dry it under natural ventilation conditions for 3 hours, and then dry it at 40°C for 1 hour.

[0060] The anti-counterfeit down treated in the above application examples 1 to 6 was tested. In the fluorescence intensity test, infrared light with a wavelength of 850nm was used for detection; the warmth retention rate was tested in accordance with the national standard GB / T 10288-2016 "Test Method for Down and Feathers"; the fluffiness was tested in accordance with the national standard GB / T 10288-2016; the fluorescence intensity retention rate was the fluorescence intensity after washing, and the treated down was subjected to 50 standard washing procedures (refer to GB / T 8629-2017 "Household Washing and Drying Procedure for Textile Testing"), and the fluorescence intensity was tested again, and the previous ratio could still be maintained; the test results are shown in Table 1.

[0061] Table 1

[0062]

[0063] By comparing application examples 1 to 6 with the blank example and Table 1, it can be seen that the fluorescence intensity of the down treated with the anti-counterfeiting material prepared by the technical solution of the present application can reach 650 cd / m 2The above, and the fluorescence intensity retention rate after washing 50 times reaches more than 81%; the warmth retention rate of the down treated with the anti-counterfeiting material prepared by the technical solution of the present application is only reduced by about 4% compared with the untreated down, and the fluffiness of the down is less than 5% compared with the untreated down.

[0064] Application Example 4, which is processed with the anti-counterfeiting material prepared in Example 4, has better comprehensive performance than other examples, and the fluorescence intensity can reach 690 cd / m 2 The fluorescence intensity retention rate after 50 washings is more than 81%; its warmth retention rate is only about 2% lower than that of untreated down, and the down fluffiness is less than 3% lower than that of untreated down.

[0065] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An anti-counterfeiting material, characterized in that: The method is prepared by comprising the following components in parts by weight: 10-20 parts of polymer microspheres; 5-10 parts of surfactant; 15-25 parts of film-forming agent; 3 to 8 parts of plasticizer; 2 to 5 parts of dispersant; 30-40 parts of solvent; The polymer microspheres are prepared by in-situ polymerization of a mixture of nano titanium dioxide and nano zinc oxide and polythiophene and its derivatives.

2. The anti-counterfeiting material according to claim 1, characterized in that: In the mixture of nano titanium dioxide and nano zinc oxide, the weight ratio of nano titanium dioxide to nano zinc oxide is 1 to 3:

1.

3. The anti-counterfeiting material according to claim 1, characterized in that: The preparation method of the polymer microspheres comprises: mixing nano titanium dioxide and nano zinc oxide, dissolving the mixture with thiophene monomer in an organic solvent, adding an initiator, and reacting under nitrogen protection; after the reaction, removing unreacted monomers and impurities to obtain polymer microspheres.

4. The anti-counterfeiting material according to claim 3, characterized in that: The weight ratio of the total amount of the nano titanium dioxide and nano zinc oxide added to the amount of the thiophene monomer added is 1:2-5.

5. The anti-counterfeiting material according to claim 1, characterized in that: The particle size of the polymer microspheres is 0.1-1 μm.

6. The anti-counterfeiting material according to claim 1, characterized in that: The solvent is a mixture of water and ethanol, and the volume ratio of water to ethanol is 1 to 3:

1.

7. The anti-counterfeiting material according to claim 1, characterized in that: The surfactant is a non-ionic surfactant; And / or, the film-forming agent is a water-based polyurethane resin; And / or, the plasticizer is diisooctyl phthalate; And / or, the dispersant is polyacrylic acid sodium salt.

8. A method for preparing the anti-counterfeiting material according to claim 1, characterized in that: Under stirring conditions, add surfactants, film-forming agents, plasticizers and dispersants to the solvent in sequence, with a stirring speed of 300-500 r / min and a stirring time of 30-60 min; slowly add polymer microspheres to the above mixed solution, continue stirring for 2-3 hours, with a stirring speed of 100-200 r / min, mix evenly, and obtain anti-counterfeiting material.

9. A method for preparing anti-counterfeiting down, characterized in that: The following steps are involved: S1. Down pretreatment Soak the down in a weak alkaline solution for 10 to 15 minutes, then rinse with clean water and dry at 50 to 60°C. S2. Impregnation treatment Immersing the pretreated down in the anti-counterfeiting material described in claim 1, and stirring continuously, the immersion time is 20 to 30 minutes; S3. Drying After impregnation, take out the down and dry it under natural ventilation conditions for 2 to 3 hours, and then dry it at 40 to 50°C for 1 to 2 hours. 10.An anti-counterfeiting down, characterized in that: It is prepared by the preparation method described in claim 9.

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