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Anti-counterfeiting glass ceramic composite material and manufacturing method thereof

A technology of glass ceramics and composite materials, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of not showing obvious up-conversion luminescence changes, deciphering and counterfeiting of materials, and prone to large batches.

Active Publication Date: 2019-12-03
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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  • Anti-counterfeiting glass ceramic composite material and manufacturing method thereof
  • Anti-counterfeiting glass ceramic composite material and manufacturing method thereof
  • Anti-counterfeiting glass ceramic composite material and manufacturing method thereof

Examples

Experimental program
Comparison scheme
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 manufacturing method thereof. A precursor mixture for preparing the anti-counterfeiting material comprises 49-75 mol% of SiO2, 5-14 mol% of Al2O3, 8-19 mol% of Cs2CO3, 9-20 mol% of CsF, 6-25 mol% of YbF3 and 0.16-0.49 mol% of ErF3, wherein the total molar amount of the components adds up to 100 mol%. According tothe anti-counterfeiting glass ceramic composite material and the manufacturing method thereof, the anti-counterfeiting material is prepared by adopting a melt quenching method and a subsequent heat treatment process; the obtained anti-counterfeiting material is able to achieve up-conversion luminescence of different colors under excitation of 980-nm laser with different intensities, namely, withthe enhancement of the laser intensity, the up-conversion luminescence of the anti-counterfeiting material gradually changes from low-power red light to green light under high power; and the anti-counterfeiting glass ceramic composite material has good physical and chemical stability, as well as practicable 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 Applications(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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