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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4. Отображено 4.
05-03-2020 дата публикации

METHOD FOR PREPARING MANGANESE-DOPED RED FLUORESCENT POWDER, PRODUCT, DEVICE, AND BACKLIGHT MODULE

Номер: WO2020042319A1
Автор: CHEN, Lei, CHENG, Peng, CHEN, Jie, TIAN, Yunfei, WANG, Jialong, HE, Liangrui, ZHANG, Qiuhong, NI, Haiyong
Принадлежит:

Disclosed in the present invention are a method for preparing manganese-doped red fluorescent powder, a device comprising a product, and a backlight module. The method comprises: 1) mixing A2BF6 polycrystalline particles with mill balls; 2) mixing A2BF6 powder obtained by ball milling with hydrofluoric acid for secondary crystallization; 3) filtering solid particles in a A2BF6 and hydrofluoric acid solution subjected to secondary crystallization; 4) performing ion exchange between A2BF6 particles and A2MnF6; and 5) filtering solid particles to obtain a filter cake, and performing drying treatment to obtain manganese-doped red fluorescent powder.

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Номер записи: 1
27-06-2023 дата публикации

Cerium-activated rare earth silicate inorganic scintillating material and preparation method thereof

Номер: CN116333740A
Автор: LIN LITIAN, CHEN PENGYUN, YANG MINGMING, NI HAIYONG, ZHANG QIUHONG, JIANG WEI
Принадлежит:

The invention discloses a cerium-activated rare earth silicate inorganic scintillating material and a preparation method thereof. The invention relates to a cerium activated rare earth silicate inorganic scintillating material, the chemical composition expression of the material is Gd2-x-yLuxSi2O7: Cey, the value range of x is more than or equal to 0.2 and less than or equal to 0.6, the value range of x is more than or equal to 1.2 and less than or equal to 1.25, and the value range of y is more than or equal to 0.001 and less than or equal to 0.05. The rare earth silicate inorganic scintillating material provided by the invention has excellent radiation luminous intensity under the excitation of high-energy rays, and can be applied to the fields of radiation detection imaging such as nuclear logging or nuclear medical imaging and the like.

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Номер записи: 2
21-04-2023 дата публикации

Anti-counterfeiting sodium lutetium gallium germanium garnet-based green fluorescent powder and preparation method thereof

Номер: CN115991993A
Автор: LI JUNHAO, ZHOU JIANBANG, CHEN PENGYUN, LIN LITIAN, ZHANG QIUHONG, NI HAIYONG
Принадлежит:

The invention relates to an anti-counterfeiting sodium lutetium gallium germanium garnet-based green fluorescent powder, the chemical composition expression formula of the fluorescent powder is NaLu2-2xGa3Ge2O12: xTb < 3 + >, x is the ion concentration of doped Tb < 3 + >, 0 lt; and x is less than or equal to 0.25. The green light NaLu2Ga3Ge2O12: Tb < 3 + > fluorescent powder has the advantages of wide excitation range, narrow emission peak spectrum, clear emission peak characteristics, easily available raw materials, simple and convenient manufacturing process, short synthesis time, low required energy consumption, easiness in industrialization and the like, can be efficiently excited by 350-390nm near ultraviolet light and 250-320nm ultraviolet light, emits narrow-band green light with the strongest peak at 540-545nm, and particularly, after the irradiation of the 250-320nm ultraviolet light is finished, the green light with the strongest peak at 540-545nm can be obtained. And the visual ...

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Номер записи: 3
22-08-2023 дата публикации

Colorful long-afterglow luminescent powder coating and preparation method thereof

Номер: CN116622275A
Автор: LIU JUN, NI HAIYONG, CAI JINSHU, MO JIANHUI, LIN MIN, ZHANG RONGJIN
Принадлежит:

According to the colored long-afterglow luminescent powder coating and the preparation method thereof, a colored high-brightness rare earth long-afterglow material treated by adding ethanol, a silane coupling agent and a wetting dispersant is wrapped and then added into a powder coating system, so that the dispersity and binding power of the colored long-afterglow luminescent powder coating in the powder system can be facilitated; in addition, through twin-screw extrusion, the prepared powder coating does not have bubbles and is glossy in surface, and the afterglow brightness of the powder coating is high; the high-strength and high-hardness tungsten carbide coating or tantalum carbide coating or aluminum oxide coating is arranged on the double screws, so that the service life of double-screw equipment can be prolonged, and the situation that materials are subjected to high-speed friction collision and shearing in the preparation process and lose the light emitting effect can be avoided ...

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Номер записи: 4