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Ordered mesoporous carbon/glass composite material with optical limiting property and preparation method

A technology of composite materials and mesoporous carbon, applied in optics, nonlinear optics, instruments, etc.

Inactive Publication Date: 2009-12-23
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Incorporating ordered mesoporous carbon into a glass matrix to prepare a transparent solid material with optical limiting properties has not yet been reported in this regard

Method used

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  • Ordered mesoporous carbon/glass composite material with optical limiting property and preparation method
  • Ordered mesoporous carbon/glass composite material with optical limiting property and preparation method
  • Ordered mesoporous carbon/glass composite material with optical limiting property and preparation method

Examples

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Effect test

Embodiment 1

[0032] 0.3wt% ordered mesoporous carbon / quartz glass composites were prepared by direct ball milling.

[0033] The ordered mesoporous carbon used in all the examples of the present invention is the template method (S.Jun, S.H.Joo, R.Ryoo, et al., J.Am.Chem.Soc., 122 (2000) 10712 -10713), the diameter of the ordered mesoporous carbon is about 6nm, and the length of the channel is micron.

[0034] According to the weight ratio of ordered mesoporous carbon, surfactant, solvent three is 3:2:960, get 0.15g ordered mesoporous carbon, 0.1g cetyltrimethylammonium bromide (CTAB) and 60ml Anhydrous ethanol was mixed and stirred for 5 minutes, and ultrasonically dispersed for 30 minutes to obtain an ordered mesoporous carbon suspension. The above ordered mesoporous carbon suspension, 50g of silicon dioxide (SiO 2 ) powder and 150g agate balls were added into a 600mL ball mill jar, and the mixture was obtained after ball milling for 24h. Then the mixture was dried at 100° C. for 10 h, ...

Embodiment 2

[0037] 0.70wt% ordered mesoporous carbon / quartz glass composite was prepared by sol-gel method.

[0038] According to the weight ratio of ordered mesoporous carbon, surfactant and solvent of 7:6:1600, take 350mg ordered mesoporous carbon, 0.3g sodium dodecyl sulfate (SDS) and 80mL deionized water and mix and stir , and ultrasonically dispersed for 40 minutes to obtain an ordered mesoporous carbon suspension. At the same time, 216 mL of tetraethyl orthosilicate (TEOS), 250 mL of absolute ethanol and 200 mL of deionized water were mixed, stirred for 5 minutes, and then ultrasonicated at 40° C. for 30 minutes to hydrolyze the tetraethyl orthosilicate. Then the ordered mesoporous carbon suspension was poured into the hydrolyzed tetraethyl orthosilicate, and while being magnetically stirred, ammonia water with a concentration of 2.6M was added drop by drop until it gelled. After the gel was washed 3-4 times with deionized water and 1-2 times with absolute ethanol, it was dried in ...

Embodiment 3

[0041] 0.5wt% ordered mesoporous carbon / alumina glass composites were prepared by homogeneous precipitation method.

[0042] According to the weight ratio of ordered mesoporous carbon and surfactant of 1:4, take 50 mg of ordered mesoporous carbon and 0.2 g of sodium dodecylbenzenesulfonate (SDBS) and add it to 1.85 L of 2M NH 4 HCO 3 In the aqueous solution, stir evenly, and ultrasonically disperse for 40 minutes. Then 1.85 L of 0.2M Al(NO 3 ) 2 The solution was dropped into the vigorously stirred mixed solution to obtain a precipitate. After the precipitate was filtered and dried, it was calcined in a muffle furnace at 500° C. for 2 hours to obtain a composite powder of alumina and ordered mesoporous carbon. Put the composite powder under the pressure of 30Mpa and pure nitrogen (N 2 ) under a protective atmosphere, hot-pressing and sintering at 1400° C., and holding for 30 minutes, an ordered mesoporous carbon / alumina glass composite material was obtained.

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Abstract

The invention provides an ordered mesoporous carbon / glass composite material with optical limiting property and a preparation method, belonging to the field of functional composite materials. The invention aims at solving the limitation of the current laser protective materials and developing a new portable solid nonlinear optical limiting material. The invention is characterized in that the ordered mesoporous carbon is added into a transparent glass matrix, and the nonlinear optical limiting material is prepared with high temperature resistance and strong environmental suitability by using the unique optical limiting property of the ordered mesoporous carbon and the characteristic of easy dispersion in the glass matrix. The solid material provided by the invention has the optical limiting property and very high transmissivity to visible light, larger application potential in terms of laser protection and the characteristics of simple process, low production cost and the like.

Description

technical field [0001] The invention relates to a solid-state material with optical limiting characteristics and a preparation method, and belongs to the technical field of functional composite materials. Background technique [0002] Since the laser came out in 1960, due to its good monochromaticity and high collimation, it has been widely used in the fields of medicine, measurement, chemistry, material processing and national defense. However, with the increasing number of high-power and short-pulse lasers, the phenomenon of laser damage to human eyes and damage to optical instruments has also increased, and the threat of lasers has become a problem that cannot be ignored. Therefore, the research on laser protection measures, especially laser protection materials, is particularly urgent. In recent years, the research focus in this field has shifted from traditional laser protection materials based on linear theory to new laser protection materials based on nonlinear theor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/355
Inventor 徐恒潘裕柏朱勇寇华敏郭景坤
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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