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Infrared colorful false proof material and preparation method thereof

A colorful and infrared technology, applied in the field of chemical anti-counterfeiting materials and their preparation, can solve the problems of small number of fluorescent light, low technical content of ultraviolet fluorescent materials, poor concealment, etc. Effect

Inactive Publication Date: 2007-10-24
龙彪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet fluorescent materials have low technical content and are easy to be exploited: when a single energy up-conversion luminescent material is excited by a laser detector, the number of fluorescence is small, the fluorescence color is only green or yellow, and the fluorescence brightness is low, which is not conducive to the development and application of subsequent products , and neither of them can be encrypted, quantitative identification cannot be carried out, the concealment is poor, and the anti-counterfeiting effect is not ideal

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0006] Embodiment 1: in the preparation raw material, according to aluminum oxide (Al 2 o 3 ) 30g, lead fluoride (PbF 2 ) 8g, beryllium fluoride (Be 2 f 2 ) 8g, calcium fluoride (CaF 2 )5g, strontium fluoride (SrF 2 ) 35g, lanthanum fluoride (LaF 3 ) 2g, europium trioxide (Eu 2 o 3 ) 3g, Samarium Trioxide (Sm 2 o 3 ) 1g, thulium trioxide (Tm 2 o 3 ) 1.5g, gadolinium trioxide (Gd 2 o 3 ) 2.5g, mixed and ground to a particle size of 20-30μm, put into a ceramic 95 porcelain sintering pot, put it into an automatic temperature control furnace, and raise the temperature at a rate of 10°C per minute to 1350°C for 3.5 hours at a constant temperature , and then heated to 1600 ° C, quenched, cooled and then ground to a particle size of 0.2-15 μm, and finally packaged into a product.

Embodiment 2

[0007] Embodiment 2: in the preparation raw material, according to aluminum oxide (Al 2 o 3 )35g, lead fluoride (PbF 2 ) 18g, beryllium fluoride (Be 2 f 2 ) 10g, calcium fluoride (CaF 2 )5g, strontium fluoride (SrF 2 ) 10g, lanthanum fluoride (LaF 3 ) 4g, europium trioxide (Eu 2 o 3 ) 3g, Samarium Trioxide (Sm 2 o 3 )2g, thulium trioxide (Tm 2 o 3 ) 1g, gadolinium trioxide (Gd 2 o 3 ) in the proportion of 1g, mixed and ground to a particle size of 20-30μm, put it into a ceramic 95 porcelain sintering pot, put it into an automatic temperature-controlled furnace, and raise the temperature at a rate of 10°C per minute to 1320°C for 3.5 hours at a constant temperature. After the temperature is raised to 1620°C, it is quenched, cooled and then ground to a particle size of 0.2-15 μm, and finally packaged into a product.

Embodiment 3

[0008] Embodiment 3: in the preparation raw material, according to aluminum oxide (Al 2 o 3 ) 45g, lead fluoride (PbF 2 )5g, beryllium fluoride (Be 2 f 2 ) 10g, calcium fluoride (CaF 2 )5g, strontium fluoride (SrF 2 ) 10g, lanthanum fluoride (LaF 3 )5g, europium trioxide (Eu 2 o 3 ) 4g, Samarium Trioxide (Sm 2 o 3 )3g, thulium trioxide (Tm 2 o 3 ) 4g, gadolinium trioxide (Gd 2 o 3 ) 4g, mix and grind to a particle size of 20-30μm, put it into a ceramic 95 porcelain sintering pot, put it into an automatic temperature-controlled furnace, and raise the temperature at a rate of 10°C per minute to 1350°C for 4 hours. After the temperature is raised to 1650°C, it is quenched, cooled and then ground to a particle size of 0.2-15 μm, and finally packaged into a product.

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PUM

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Abstract

The invention discloses an infrared colorful false proof material and making method, which comprises the following steps: selecting certain proportional alumina, lead fluoride, beryllium fluoride, calcium fluoride, strontium fluoride, lanthanum fluoride, europium trioxide, samarium trioxide, thulium trioxide and gadolinium trioxide as raw materal; blending these raw materials; grinding; heating; insulating; heating again; quenching; cooling; grinding; packing. The spectral scale is broad to form 3-6 different colorful fluorescences stimulated by laser at 960nm, which is fit for falseproof marking material.

Description

technical field [0001] The invention relates to a chemical anti-counterfeiting material and a preparation method thereof. Background technique [0002] At present, in the anti-counterfeiting technology, the chemical anti-counterfeiting materials used mainly include ultraviolet fluorescent materials and energy up-conversion luminescent materials. Ultraviolet fluorescent materials have low technical content and are easy to be exploited: when a single energy up-conversion luminescent material is excited by a laser detector, the number of fluorescence is small, the fluorescence color is only green or yellow, and the fluorescence brightness is low, which is not conducive to the development and application of subsequent products , and neither of them can be encrypted, quantitative identification cannot be carried out, the concealment is poor, and the anti-counterfeiting effect is not ideal. Contents of the invention [0003] The object of the present invention is to overcome th...

Claims

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Application Information

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IPC IPC(8): C09K3/00C09C3/00
Inventor 龙彪
Owner 龙彪
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