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Oxidation resisting platy silver powder and preparation method thereof
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A flaky silver powder and anti-oxidation technology, which is applied in the field of flaky silver powder and its preparation, can solve the problems of affecting anti-counterfeiting performance, flaky silver powder is easy to oxidize, etc., and achieve the effect of improving anti-oxidation performance
Active Publication Date: 2013-05-08
CHENGDU BANKNOTE PRINTING
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Summary
Abstract
Description
Claims
Application Information
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the existing flaky silver powder is easy to oxidize and affect the anti-counterfeiting performance, provide an anti-oxidation flaky silver powder and its preparation method, and improve the safety and aesthetics of using the flaky silver powder to make anti-counterfeiting latent images
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0051] The content of the antioxidant flake silver powder is specifically:
[0052] 6-8 micron flake silver powder 10 kg
[0053] High purity water 10 liters
[0054] Silver protectant 200g
[0055] The preparation method is as follows:
[0056] a. Measure 10 liters of high-purity water, put the above-mentioned high-purity water in a container, and heat it to 80°C;
[0057] b. Weigh 10 kilograms of flake silver powder and 200 grams of silver protective agent (Shenzhen Ezhen Technology Co., Ltd. EZ-AGII water-soluble silver protective agent can be selected), and place them in the container;
[0058] c. Stir fully after soaking for 1 hour;
[0059] d. Pour the aqueous solution of the flake silver powder into 5 drying trays, and set the oven temperature to 80°C;
[0060] e. Obtain anti-oxidation flake silver powder after drying.
Embodiment 2
[0061] Example 2: The content of the antioxidant flake silver powder is specifically:
[0062] 6-8 micron flake silver powder 10 kg
[0063] High purity water 10 liters
[0064] Silver protector 300g
[0065] The preparation method is as follows:
[0066] a. Measure 10 liters of high-purity water, put the above-mentioned high-purity water in a container, and heat it to 80°C;
[0067] b. Weigh 10 kilograms of flake silver powder and 300 grams of silver protective agent (Shenzhen Ezhen Technology Co., Ltd. EZ-AGII water-soluble silver protective agent can be used), and place them in the container;
[0068] c. Stir fully after soaking for 1 hour;
[0069] d. Pour the aqueous solution of the flake silver powder into 5 drying trays, and set the oven temperature to 80°C;
[0070] e. Obtain anti-oxidation flake silver powder after drying.
Embodiment 3
[0072] The content of the antioxidant flake silver powder is specifically:
[0073] 6-8 micron flake silver powder 10 kg
[0074] High purity water 10 liters
[0075] Silver protectant 400g
[0076] The preparation method is as follows:
[0077] a. Measure 10 liters of high-purity water, put the above-mentioned high-purity water in a container, and heat it to 80°C;
[0078] b. Weigh 10 kilograms of flake silver powder and 400 grams of silver protective agent (Shenzhen Ezhen Technology Co., Ltd. EZ-AGII water-soluble silver protective agent can be used), and place them in the container;
[0079] c. Stir fully after soaking for 1 hour;
[0080] d. Pour the aqueous solution of the flake silver powder into 5 drying trays, and set the oven temperature to 80°C;
[0081] e. Obtain anti-oxidation flake silver powder after drying.
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Abstract
The invention discloses oxidation resisting platy silver powder and a preparation method thereof, relates to the platy silver powder and aims to solve the problem that the conventional silver powder is easy to oxidize so the anti-counterfeiting performance is influenced. The oxidation resisting platy silver powder comprises the following components: 6-to-8-micron platy silver powder, high-purity water and a silver protective agent; the content ratio of the platy silver powder to the high-purity water is 1 kilogram / 1liter; the content ratio of the silver protective agent to the platy silver powder is 20 to 50 grams / 1kilogram; the preparation method comprises the following steps of: a, taking the high-purity water in a ratio, placing the high-purity water in a container, and heating to 80 DEG C; b, weighing the platy silver powder and the silver protective agent in the ratio and placing in the container; c, soaking for one hour and then fully stirring; d, pouring the aqueous solution of the platy silver powder into a plurality of drying disks, wherein the temperature of a drying oven is set to be 80 DEG C; and e, after drying, obtaining the oxidation resisting platy silver powder.
Description
Technical field [0001] The invention relates to a flaky silver powder and a preparation method thereof, and belongs to an important research field of metal powder metallurgy. Background technique [0002] Anti-oxidation flake silver powder is a kind of latent image anti-counterfeiting functional material, which overcomes the technical bottleneck that flake silver powder is easy to oxidize and change color. Anti-oxidant silver powder is mainly used in metal inks of various securities, such as banknotes, securities, licenses and bills. The metallic luster of anti-oxidant flaky silver powder is used to improve the high quality of printed products. It can be used in the perspective of light. Next, the hidden pattern in the base pattern is displayed, while the latent image pattern is hidden in the base pattern and is not displayed, realizing the purpose of anti-counterfeiting. Through the use of metal ink made of anti-oxidant flake silver powder, the see-through latent image is not e...
Claims
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Application Information
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