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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

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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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4. Отображено 4.
24-10-2013 дата публикации

METHOD FOR DISMANTLING ELECTRONIC COMPONENTS ON A CIRCUIT BOARD BY FINE SAND

Номер: WO2013155836A1
Автор: MA, Yongmei, HUANG, Hai, CAO, Xinyu, ZHANG, Wen, HE, Dan
Принадлежит:

The present invention relates to the field of circuit board recycling. A method used for dismantling electronic components on a circuit board by fine sand, said method comprising: depositing fine sand on the surface of a heating device used for heating said fine sand; heating said fine sand by means of said heating device, causing the temperature of the sand to be above the melting point of the solder on the pins of the electronic components on a circuit board; bringing the side of the circuit board having few or no electronic components into contact with the fine sand so as to melt the solder, thereby dismantling the electronic components on the circuit board. In the present method, the surface area of contact is large, heating is uniform, the solder melts rapidly, cost and energy consumption are low, operation is convenient, and there is no secondary pollution.

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Номер записи: 1
05-11-2015 дата публикации

NYLON POWDER COMPOSITION FOR 3D PRINTING, AND PREPARATION METHOD AND USE THEREOF

Номер: WO2015165361A1
Автор: MA, Yongmei, ZHENG, Kun, ZHANG, Jingnan, CAO, Xinyu, WANG, Fusong, LIN, Xuechun, SUN, Wenhua, XU, Jian, DONG, Jinyong, LI, Chuncheng, FU, Wenxin
Принадлежит:

The present invention relates to a high molecular weight nylon powder composition for 3D printing, and preparation method and use thereof. The composition comprises 100 parts by weight of high-viscosity nylon powder, 1-5 parts by weight of a flow agent, and 0.1-1 parts by weight of antioxidant; the high-viscosity nylon powder is one or more selected from nylon 6, nylon 66, nylon 11, nylon 12, nylon 612 and nylon 610; or the powder composition is obtained via polymerization reaction of raw materials comprising the following components, based on the weight parts of lactam monomer or amide salt monomer: 100 parts by weight of lactam monomer or amide salt monomer, 0.005-1 parts by weight of a catalyst, and 0.1-1 parts by weight of antioxidant. The high molecular weight nylon powder composition prepared by the present invention has a 20-100 micrometer particle diameter and good powder spreading performance, and is suitable for a 3D printing process; and the product of the high molecular weight ...

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Номер записи: 2
18-04-2023 дата публикации

Underwater acoustic measurement device and method based on angular motion

Номер: CN115980832A
Автор: CHEN YANJUN, WANG WENBO, HUANG HUIMIN, ZHU LANXIN, CAO YUWEN, CAO XINYU, ZHOU ZIQI, HE YAN, SHI FANGSHUO, MA XIANGDONG, LI ZHENGBIN
Принадлежит:

The invention discloses an underwater acoustic measurement device and method based on angular motion. The method comprises the following steps: 1) placing an inertial body in a water area to be measured, respectively arranging an angular motion sensor on one or more surfaces of the inertial body, and measuring the angular acceleration beta of each surface in a corresponding direction when the inertial body is disturbed by water flow; the inertia body is an inertia cube, the mass of the inertia cube is m, and the side length of the inertia cube is L; (2) when the inertial body is disturbed by water flow, each angular motion sensor sends measured angular acceleration beta in the corresponding direction to a data processing unit; and (3) the data processing unit obtains the underwater sound pressure difference delta P in the corresponding direction according to calculation. According to the invention, sensing of the water sound is completed based on angular motion of the inertial body, sensitivity ...

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Номер записи: 3
23-05-2023 дата публикации

Sample preparation device for tensile property test of carbon fiber multifilament and use method of sample preparation device

Номер: CN116148006A
Автор: LEI CHUBIN, MA XIANGLIN, ZHANG CHAO, WANG JINGRU, CHENG HAN, ZHANG YONGMING, CHEN GUOYU, YUAN JING, ZHANG BAIYU, WANG ZUOZHI, ZHAO DONGMEI, ZHANG YU, MA JUNJIAN, FENG JINGRONG, KUANG WEIWEI, LU HUAN, CAO XINYU, YUAN SEN, LI TIEYAN
Принадлежит:

The invention relates to the technical field of carbon fiber multifilament tensile property tests, in particular to a carbon fiber multifilament tensile property test sample preparation device and a use method thereof. The carbon fiber multifilament tensile property test sample preparation device comprises a filament releasing device used for conveying filament bundles and adjusting the tension of the filament bundles in the conveying process; the gum dipping device is used for adhering a gum solution to the tows, detecting the concentration of the gum solution at a preset temperature and adjusting the gum solution with unqualified concentration; the curing device is used for heating and shaping the tows; the shredding device is used for cutting tows to a preset length; the patching device is used for patching the tows. According to the invention, automatic sample preparation can be realized to improve the sample preparation efficiency and the sample quality, and the tension of tows can ...

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Номер записи: 4