A kind of laser protection material and preparation method thereof

A laser protection and product technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of rare powder materials for laser protection and few powder functional materials, so as to enhance laser protection ability and ensure personal safety , Improve the effect of laser protection ability

Active Publication Date: 2019-08-13
聊城轩尚工业设计有限公司
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  • Description
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  • Application Information

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Problems solved by technology

However, in the existing laser protection materials, polymer materials and glass materials are commonly used, while the research on powder materials for laser protection is rare, and there are few powder functional materials available for laser protection coating materials

Method used

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  • A kind of laser protection material and preparation method thereof
  • A kind of laser protection material and preparation method thereof
  • A kind of laser protection material and preparation method thereof

Examples

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preparation example Construction

[0023] A preparation method of a laser protection material, comprising: alkaline hydrolyzing Sm, Yb and Er to obtain hydrolyzed products. Then react the hydrolyzed product in a closed and heated first environment to obtain the first product. The second product is obtained by reacting the first product with polyvinylpyrrolidone and thiourea in a closed, heated second environment.

[0024] In the preparation process, no toxic sulfur-containing gas is used, but thiourea is used as a sulfur source, which ensures the personal safety of experimental operators. Thiourea also further provides a reducing environment for the synthesis of sulfur oxides. Using polyvinylpyrrolidone as a structural alignment agent to control (Sm 1-x-y Yb x Er y ) 2 o 2 The morphology of S is flake, which improves the laser protection ability of the material.

[0025] Preferably, Sm, Yb, and Er are provided in the form of one or more of nitrates and hydrates thereof, chloride salts and hydrates thereo...

Embodiment 1

[0034] Prepare 1mmol (Sm 0.915 Yb 0.08 Er 0.005 ) 2 o 2 S, weigh the required raw material 0.8134g Sm(NO 3 ) 3 ·6H 2 O, 0.0719g Yb (NO 3 ) 3 ·5H 2 O and 0.0044g Er(NO 3 ) 3 ·5H 2 O, completely dissolved in water to make a nitrate mixed solution, and stir evenly; adjust the pH value of the rare earth nitrate solution until the pH value of the rare earth nitrate solution is stable to 10; place the adjusted pH value of the rare earth nitrate solution under high pressure In the reaction kettle, react at 160°C for 32 hours, then cool down to room temperature naturally, wash the product with water three times, add absolute ethanol, and stir well; weigh 4.4g of polyvinylpyrrolidone and 0.3045g of thiourea, and dissolve them completely in the mixing solution, and stir evenly; put the evenly stirred mixed solution in a high-pressure reactor, react at 220°C for 32 hours, then cool down to room temperature naturally, and wash the reacted product 4 times with absolute ethanol;...

Embodiment 2

[0036] Prepare 1mmol (Sm 0.895 Yb 0.10 Er 0.005 ) 2 o 2 S, weigh the required raw material 0.7957g Sm(NO 3 ) 3 ·6H 2 O, 0.0898g Yb(NO 3 ) 3 ·5H 2 O and 0.0044gEr(NO 3 ) 3 ·5H 2 O, completely dissolved in water to make a nitrate mixed solution, and stir evenly; adjust the pH value of the rare earth nitrate solution until the pH value of the rare earth nitrate solution is stable to 9.8; place the adjusted pH value of the rare earth nitrate solution under high pressure In the reaction kettle, react at 170°C for 29 hours, then cool down to room temperature naturally, wash the product with water 4 times, add absolute ethanol, and stir well; weigh 4.3g of polyvinylpyrrolidone and 0.3425g of thiourea, completely dissolve in the mixing solution, stirred evenly; put the evenly stirred mixed solution in a high-pressure reactor, and reacted at 210°C for 30 hours, then cooled down to room temperature naturally, and the reacted product was washed 5 times with absolute ethanol; ...

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Abstract

The invention provides a laser protection material, and relates to the field of an inorganic nonmetallic functional material. The laser protection material has a chemical formula of (Sm<1-x-y>YbxEry)2O2S, wherein the x is greater than or equal to 0.08 but smaller than or equal to 0.16; the y is greater than or equal to 0.005 but smaller than or equal to 0.02. The laser protection material absorbs 1.06mu m and 1.54mu m near infrared laser through Sm<3+> transition; the laser protection goal is achieved. Through the upper conversion effect of the Yb<3+> and Er<3+>, the laser protection capability of the materials is further enhanced. The invention also relates to a preparation method of the laser protection material. The method comprises the following steps of performing basic hydrolysis on Sm, Yb and Er to obtain hydrolysis products; performing reaction on the hydrolysis products in the sealed and heating first environment to obtain a first product; performing reaction on the first product, polyvinylpyrrolidone and thiourea in the sealed and heating second environment to obtain a second product. The preparation method has the advantages that the synthesis temperature is low; the operation is convenient and safe.

Description

technical field [0001] The invention relates to the field of inorganic non-metallic functional materials, and in particular to a laser protection material and a preparation method thereof. Background technique [0002] Laser has been widely used in industry, commerce, scientific research, medical treatment and military due to its characteristics of high brightness, good directionality, low interference and wide frequency band. However, due to the high energy density and concentrated energy of the laser, it may cause great damage to the irradiated parts of the human body. With the continuous improvement of laser energy, the continuous increase of laser varieties and the continuous expansion of laser application range, laser damage to personnel vision and equipment is becoming more and more serious, especially near-infrared lasers such as 1.06 μm and 1.54 μm. Protection research is also carried out simultaneously. However, in the existing laser protection materials, polymer ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/84
CPCC09K11/7771
Inventor 韩朋德李佳王昊张长森焦宝祥吴其胜张其土
Owner 聊城轩尚工业设计有限公司
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