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A kind of preparation method of anti-counterfeiting glass-ceramic composite material

A composite material and glass-ceramic technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of deciphering and counterfeiting materials, prone to large quantities, and not having high photothermal effect embedded in glass-ceramic anti-counterfeiting materials. The effect of anti-counterfeiting strength

Active Publication Date: 2021-10-19
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the fluorescent anti-counterfeiting materials that are widely used in the glass and ceramics market only have a single fluorescent anti-counterfeiting function under a single condition, and this type of material is very easy to be deciphered and counterfeited, which leads to a large number of counterfeit products on the market.
Meanwhile, other Yb(ytterbium)-based compounds such as NaYbF 4 、KYbF 4 、KYb 2 f 7 etc., all do not have the high photothermal effect of anti-counterfeiting materials embedded in glass ceramics, and other such Yb (ytterbium)-based compounds do not show obvious up-conversion luminescence changes in the process of changing laser power, so , it is of great significance to study a kind of anti-counterfeiting ceramic glass that can realize multi-color luminescence and high anti-counterfeiting strength under various conditions

Method used

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  • A kind of preparation method of anti-counterfeiting glass-ceramic composite material
  • A kind of preparation method of anti-counterfeiting glass-ceramic composite material
  • A kind of preparation method of anti-counterfeiting glass-ceramic composite material

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Experimental program
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Effect test

Embodiment 1

[0038] A preparation method of anti-counterfeiting material, comprising the following steps:

[0039] (1) Preparation of mixture Ⅰ: Weigh SiO in a specific molar ratio 2 , Al 2 o 3 , Cs 2 CO 3 , CsF, YbF 3 and ErF 3 , and the corresponding molar ratios are 49:10:12:15:13.7 and 0.3, respectively, and put them in a ceramic crucible after grinding fully;

[0040] (2) Raise the temperature of the high-temperature box furnace to 1500°C;

[0041] (3) Put the crucible containing the mixture I into the high-temperature box furnace of step (2) and fully sinter for 45 minutes after adding a crucible cover;

[0042] (4) Take out the sintered molten liquid directly from the high-temperature box furnace with crucible tongs and pour it on the copper mold, and quickly cover the copper mold cover to quench to form the precursor glass;

[0043] (5) Put the precursor glass into a muffle furnace and raise the temperature to 850° C. and hold it for 2 hours for heat treatment to form glass...

Embodiment 2

[0045] A preparation method of anti-counterfeiting material, comprising the following steps:

[0046] (1) Preparation of mixture Ⅰ: Weigh SiO in a specific molar ratio 2 , Al 2 o 3 , Cs 2 CO 3 , CsF, YbF 3 , ErF3 , the molar ratio is 63:7:9:10:10.7:0.3, after being fully ground, put it in a ceramic crucible for later use;

[0047] (2) Raise the temperature of the high-temperature box furnace to 1550°C;

[0048] (3) Put the crucible with the mixture I into the high-temperature box furnace and fully sinter it for 40 minutes after adding the crucible cover;

[0049] (4) Take out the sintered molten liquid directly from the high-temperature box furnace with crucible tongs and pour it on the copper mold, and quickly cover the copper mold cover to quench to form the precursor glass;

[0050] (5) Put the precursor glass into a muffle furnace and raise the temperature to 750° C. and hold it for 2 hours for heat treatment to form glass ceramics, and obtain the anti-counterfeitin...

Embodiment 3

[0052] A preparation method of anti-counterfeiting material, comprising the following steps:

[0053] (1) Preparation of mixture Ⅰ: Weigh SiO in a specific molar ratio 2 , Al 2 o 3 , Cs 2 CO 3 , CsF, YbF 3 , ErF 3 , the molar ratio is 71:6:8:9:5.7:0.3, after being fully ground, put it in a ceramic crucible for later use;

[0054] (2) Raise the temperature of the high-temperature box furnace to 1550°C;

[0055] (3) Put the crucible with the mixture I into the high-temperature box furnace and fully sinter it for 25 minutes after adding the crucible cover;

[0056] (4) Take out the sintered molten liquid directly from the high-temperature box furnace with crucible tongs and pour it on the copper mold, and quickly cover the copper mold cover to quench to form the precursor glass;

[0057] (5) Put the precursor glass into a muffle furnace and raise the temperature to 950° C. and hold it for 2 hours for heat treatment to form glass ceramics, and obtain the anti-counterfeitin...

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Abstract

The invention discloses an anti-counterfeiting glass ceramic composite material and a preparation method thereof. The composition of the precursor mixture for preparing the anti-counterfeiting material is as follows: SiO 2 : 49‑75mol%; Al 2 o 3 : 5‑14mol%; Cs 2 CO 3 : 8‑19mol%; CsF: 9‑20mol%; YbF 3 : 6‑25mol%; ErF 3 : 0.16-0.49mol%. The total molar amount of the above components is 100mol%. The anti-counterfeiting material of the present invention is prepared by a melt quenching method and subsequent heat treatment. The obtained anti-counterfeiting material can realize up-conversion luminescence of different colors under the excitation of 980nm lasers of different intensities, that is, as the laser intensity increases, the up-conversion luminescence of the anti-counterfeiting material gradually changes from low-power red light to high-power red light. green light. And it has good physical and chemical stability, and has practical application prospects in the field of anti-counterfeiting.

Description

technical field [0001] The invention belongs to the technical field of anti-counterfeiting materials, and in particular relates to a novel anti-counterfeiting glass-ceramic composite material and a preparation method thereof. Background technique [0002] In the fields of glass and ceramics, traditional anti-counterfeiting technologies mainly include laser anti-counterfeiting, fluorescent anti-counterfeiting, and temperature-changing anti-counterfeiting. The above-mentioned technologies have played a certain role in the early stage of the development of glass and ceramic anti-counterfeiting technology. However, due to the shortcomings of traditional glass and ceramic anti-counterfeiting technologies, such as low technical content and easy structural combination, etc., in the stage of rapid development of the industry , these traditional anti-counterfeiting technologies are easily counterfeited and have little effect. In recent years, anti-counterfeiting technology has mainl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16C03C4/12C03B19/02
CPCC03B19/02C03C4/12C03C10/16
Inventor 陈江坤陈大钦
Owner FUJIAN NORMAL UNIV
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