Preparation method and application of AgCl glass powder with photochromic effect

A photochromic and glass powder technology, applied in the field of anti-counterfeiting, can solve the problems of poor reversibility and sensitivity, difficult fading process, hindering practical application, etc., and achieves the effects of good stability, good chemical stability and low cost.

Pending Publication Date: 2021-12-07
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

With the development of the market economy, a large number of counterfeit and shoddy goods have also appeared. Many illegal elements have used advanced imitation technology to manufacture various styles of high-quality imitations, and then earn high profits from them, which has brought certain disorder to the market. Sex, anti-counterfeiting has been closely related to people's lives. In the fields of medical treatment, clothing industry, industry, etc., there are counterfeit products, but to distinguish the authenticity of goods, sometimes it cannot be solved by naked eyes. Therefore, it is necessary to find a simple and effective It is extremely important to distinguish
Traditional photochromic ceramics or powders, on the one hand, have the disadvantages of slow discoloration time, poor reversibility, and poor sensitivity; Stimulation, or through heat fading, can achieve the fading effect, which seriously hinders the practical application

Method used

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  • Preparation method and application of AgCl glass powder with photochromic effect
  • Preparation method and application of AgCl glass powder with photochromic effect
  • Preparation method and application of AgCl glass powder with photochromic effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation method based on photochromic glass powder doped with AgCl, its specific steps are as follows:

[0021] (1) First, according to the mole percentage, 15% SiO 2 -5%Al 2 o 3 -34.4%B 2 o 3 -4%ZnO-30%GeO 2 –10%SrCO 3 -1.5%AgCl-0.1%Cu 2 O, a total of 15g of the mixed material was weighed and ground for ten minutes, and then sintered at 1300°C for 25 minutes under air atmosphere to obtain transparent glass without discoloration effect.

[0022] (2) In an air atmosphere, heat the glass obtained in step (1) to 600°C, keep it warm for 1 hour, and cool to room temperature with the furnace.

[0023] (3) Grinding the glass obtained in step (2) into glass powder to obtain photochromic glass powder.

[0024] The present embodiment 1 obtains the glass frit doped with AgCl such as figure 1 As shown in (a), the glass frit kept at 600°C for 1 hour appears white. After being irradiated with 365nm ultraviolet light for 3s, an obvious color change occurred, showing b...

Embodiment 2

[0027] The preparation method of the glass powder based on photochromic AgCl, its concrete steps are as follows:

[0028] (1) First, according to the percentage of moles, 15% SiO 2 -5%Al 2 o 3 -33.9%B 2 o 3 -4%ZnO-30%GeO 2 –10%SrCO 3 -1.5%AgCl-0.1%Cu 2 O, a total of 15g of the mixed material was weighed and ground for ten minutes, and then sintered at 1300°C for 25 minutes under air atmosphere to obtain transparent glass without discoloration effect.

[0029] (2) In an air atmosphere, heat the glass obtained in step (1) to 600°C, keep it warm for 2 hours, and cool to room temperature with the furnace.

[0030] (3) Grinding the glass obtained in step (2) into glass powder to obtain photochromic glass powder.

[0031] Present embodiment 1 obtains the glass frit doped with AgCl and presents white, as figure 1 As shown in (a), after being irradiated with 365nm ultraviolet light for 3s, the photochromic image is as follows figure 2 As shown in (b), it can be seen from th...

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Abstract

The invention discloses a preparation method and application of AgCl glass powder with a photochromic effect. The invention designs a preparation method and application of glass powder with a photochromic effect, which belong to the technical field of anti-counterfeiting application. The preparation method comprises the following steps of weighing 15% by mole of SiO2, 5% by mole of Al2O3, 33.9% by mole of B2O3, 4% by mole of ZnO, 10% by mole of SrCO3, 30% by mole of GeO2, 2% by mole of AgCl and 0.1% by mole of Cu2O into an agate mortar, grinding and uniformly mixing, heating to 1300 DEG C in an air atmosphere, sintering for 25 minutes to obtain glass without a color change effect, annealing the glass at 600 DEG C for 1-2 hours, cooling to room temperature along with a furnace, grinding into powder, and acquiring the glass powder with the photochromic effect. The glass powder with the photochromic effect is prepared, the glass powder is changed from white to black under 365nm ultraviolet irradiation, so that the anti-counterfeiting effect is achieved, the glass powder can recover to the initial state in a self-bleaching mode, the glass powder has the advantages of short color changing time, good fatigue resistance, energy conservation, no toxicity and the like, the preparation method is simple and convenient, the performance is excellent, and the industrialization is expected to be realized.

Description

technical field [0001] The invention relates to a preparation method and application of photochromic AgCl glass powder, belonging to the technical field of anti-counterfeiting. Background technique [0002] Photochromic materials refer to some compounds or mixtures that change the visible light part of the absorption spectrum when they experience external light stimulation, so that the color of the sample changes. This color-changing material is widely used in various fields such as optical storage, molecular switches, temperature measurement, imaging, anti-counterfeiting marks, biosensing, industry, textiles, military, printing, and aerospace. With the development of the market economy, a large number of counterfeit and shoddy goods have also appeared. Many illegal elements have used advanced imitation technology to manufacture various styles of high-quality imitations, and then earn high profits from them, which has brought certain disorder to the market. Sex, anti-counte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C12/00C03C4/06C03C6/06C03C6/04C03C1/00
CPCC03C12/00C03C4/06C03C1/00
Inventor 杨正文赵和平寸阳珂肖代文白雪徐赞字映竹杨钊烁付丽香邱建备宋志国
Owner KUNMING UNIV OF SCI & TECH
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