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Infrared upward rotating marking material and its prepn. method

An infrared up-conversion and marking technology, which is applied in the field of infrared up-conversion marking materials, can solve the problems of high cost and unsuitability for large-scale production, and achieve the effects of stable wavelength, lower temperature requirements, and simplified preparation process

Inactive Publication Date: 2003-05-07
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Chinese invention patent application CN1185475A discloses an up-conversion material and its preparation method. Its synthesis system is a fluoride-doped rare earth element system. It is a fluoride-doped system. The preparation method of the external light detection material disclosed in the Chinese invention patent application CN1183552A is to prepare a sulfide-doped rare earth element system. The fluoride-doped rare earth element disclosed in the Chinese invention patent application CN1280153A The element system, the preparation method disclosed in the above patent application, its synthesis temperature is above 900°C, in addition, because fluoride and sulfide are easily oxidized by oxygen in the air at high temperature, in the preparation process, it is necessary to pass inert gas (nitrogen or argon) for protection, the cost is high, and it is not suitable for large-scale production

Method used

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  • Infrared upward rotating marking material and its prepn. method
  • Infrared upward rotating marking material and its prepn. method
  • Infrared upward rotating marking material and its prepn. method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment one: synthesize a kind of material by following composition, and the percentage that each composition accounts for raw material gross weight is: Al 2 o 3 5.38%, SiO 2 11.87%, PbF 2 37.16%, CdF 2 19.79%, BaF 2 11.54%, Yb 2 o 3 7.79%, Er 2 o 3 1.26%.

[0034]Weigh 9.34 grams of alumina, 20.68 grams of silicon dioxide, 64.77 grams of lead fluoride, 34.48 grams of cadmium fluoride, 20.11 grams of barium fluoride, 13 grams of ytterbium oxide, and 2.19 grams of erbium fluoride according to the above ratio, and grind them in a ball mill Put it into a platinum crucible for 2 hours, keep the temperature at 350°C for one hour, raise the temperature to 900°C at a rate of 5°C / min, keep it for 120 minutes, cool it down to 450°C at a rate of 5°C / min and keep it for 12 hours, then cool naturally to Take it out at room temperature, and grind it to 300-400 mesh in a ball mill. The infrared up-conversion marking material emits red and green bicolor light under...

Embodiment 2

[0036] Embodiment two: synthesize a kind of material by following composition, and the percentage that each composition accounts for raw material gross weight is: Al 2 o 3 5.91%, SiO 2 13.04%, PbF 2 40.82%, CdF 2 27.17%, YbF 3 11.66%, Er 2 o 3 1.38%.

[0037] Weigh 7.21 grams of alumina, 15.91 grams of silicon dioxide, 64.77 grams of lead fluoride, 33.15 grams of cadmium fluoride, 14.2 grams of ytterbium fluoride, and 1.69 grams of erbium fluoride according to the above proportions, grind them in a ball mill for 2 hours, put Put it in a platinum crucible, keep the temperature at 350°C for one hour, raise the temperature to 850°C at a rate of 5°C / min, keep it for 120 minutes, cool it down to 450°C at a rate of 5°C / min and keep it for 12 hours, cool naturally to room temperature, take it out, and Grind in a ball mill to 300-400 mesh. The infrared up-conversion marking material emits red and green bicolor light under the excitation of 980nm infrared light. Among th...

Embodiment 3

[0039] Embodiment three: synthesize a kind of material by following composition, and the percentage that each composition accounts for raw material gross weight is: Al 2 o 3 2.36%, SiO 2 12.96%, PbF 2 43.50%, CdF 2 23.16%, AlF 3 6.48%, Yb 2 o 3 9.12%, Er 2 o 3 1.47%.

[0040] Weigh 2.93 grams of alumina, 16.09 grams of silicon dioxide, 53.97 grams of lead fluoride, 28.73 grams of cadmium fluoride, 8.04 grams of aluminum fluoride, 9.12 grams of ytterbium oxide, and 1.47 grams of erbium fluoride according to the above ratio, and grind them in a ball mill Put it into a platinum crucible for 2 hours, keep the temperature at 350°C for one hour, raise the temperature to 800°C at a rate of 5°C / min, keep it for 120 minutes, cool it down to 450°C at a rate of 5°C / min and keep it for 12 hours, then cool naturally to Take it out at room temperature, and grind it to 300-400 mesh in a ball mill. The infrared up-conversion marking material emits red and green bicolor light ...

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Abstract

A dual-wavelength infrared up-conversion material for label or antiforge purpose is a RE compound doped composite fluoroxidie ceramics material while can generate one or two or more kinds of wavelength-fixed visible light under the radiation of 980-nm near infrared light. Its advantages are high up-conversion efficiency and stability and simple preparing process.

Description

technical field [0001] The invention relates to an infrared up-conversion marking material, which can emit visible light under the irradiation of infrared light and play the role of anti-counterfeiting and marking. The invention also relates to a preparation method of the infrared up-conversion marking material. Background technique [0002] Infrared up-conversion marking materials use the characteristics of different absorption of infrared rays (800-1500 nanometers), detect or identify their imprints through instruments, and have no reaction under ordinary light irradiation, but under infrared light irradiation, they can be tested. signal or text. Compared with the widely used UV-excited luminescent marking materials, infrared up-conversion marking materials have complicated synthetic components, high technical requirements, and are difficult to imitate. Since the high-efficiency up-conversion material uses relatively cheap infrared lasers to realiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
Inventor 陈若愚王国平陈林森
Owner SUZHOU UNIV
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