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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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Применить Всего найдено 3. Отображено 3.
18-08-2023 дата публикации

Construction waste treatment equipment and treatment method for recycled aggregate processing

Номер: CN116603625A
Автор: CUI CHUANZHI, WANG PENG, MA WULIN, LIU ZHU, WANG YANAN, ZHANG SHUANGCHUN, ZHOU FULONG, GUAN SHAOQING, ZHANG RUNZE
Принадлежит:

The invention discloses construction waste treatment equipment and a treatment method for recycled aggregate processing, and relates to the technical field of recycled aggregate processing. The construction waste treatment equipment comprises a crushing cavity, a dust removal mechanism located at the top of the crushing cavity, a feeding port formed in the top of the side face of the crushing cavity, and a conveying mechanism rotationally connected into the feeding port; a plurality of groups of crushing mechanisms are arranged below the conveying mechanism at intervals, a material guiding piece is arranged above each group of crushing mechanism, each crushing mechanism comprises two crushing rollers, the surfaces of the crushing rollers are connected with a shearing piece, a hammering piece is arranged below the crushing rollers, and the two crushing rollers are connected through a pressurizing cylinder; and the construction wastes with different diameters enter the corresponding crushing ...

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Номер записи: 1
13-06-2023 дата публикации

Safe production method of musk ketone

Номер: CN116253643A
Автор: MIAO XIAORONG, WU JUN, HUANG QINGFEI, ZHOU FULONG
Принадлежит:

The invention relates to a safe production method of musk ketone, which comprises the following steps: dissolving 4-tert-butyl-2, 6-dimethyl acetyl benzene in trichloroethane to obtain a 4-tert-butyl-2, 6-dimethyl acetyl benzene solution; preparing fuming nitric acid and concentrated sulfuric acid for later use; cooling a cooling system of the tubular reactor; the method comprises the following steps: pumping a 4-tert-butyl-2, 6-dimethyl acetyl benzene solution, fuming nitric acid and a concentrated sulfuric acid solution into a tubular reactor through a peristaltic pump and an independent valve; recovering the solvent, and carrying out precipitation crystallization on the solvent; and carrying out vacuum drying on the crystallized product to obtain the final product musk ketone crystal. The tubular reactor is adopted, and compared with a conventional intermittent reactor, a flowing structure in the tubular reactor can greatly enhance quality and heat transfer, so that nitration reaction ...

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Номер записи: 2
12-09-2017 дата публикации

A low-viscosity water-soluble polyester resin and its preparation method

Номер: CN0105542132B
Автор: 刘业强, 姬亚宁, 周福龙
Принадлежит:

... 本发明公开了种低粘度水溶性聚酯树脂及其制备方法。所述低粘度水溶性聚酯树脂按重量份计，它以包括下述物质在内的原料采用羧酸成盐法制备而成：醇类，16.7～53.70份；多元酸，15.5～40.1份；对叔丁基苯甲酸，0.4～1.0份；催化剂，0.03～0.1份；长链烯基琥珀酸酐，18.1～37.7份；助溶剂，其用量为使所得产品的固含量达到所需要求；pH调节剂，其用量为使所得产品的pH值呈碱性。按本发明所述方法制得的聚酯树脂具有黏度低、强度好、储存期较长等特点，在无机漆、绝缘浸渍漆、预浸胶、水溶性涂料等绝缘产品等中具有良好的应用前景。 ...

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Номер записи: 3