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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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Применить Всего найдено 3. Отображено 3.
09-05-2023 дата публикации

Suede microfiber leather with differentiated appearances and preparation method of suede microfiber leather

Номер: CN116084177A
Автор: ZHANG QIBIN, DUAN WEIDONG, TANG JINGSONG, FU HAO, SUN XIANGHAO, WU YONG, YANG YINLONG
Принадлежит:

The invention relates to suede microfiber leather with differentiated appearances and a preparation method of the suede microfiber leather, the suede of the suede microfiber leather is composed of fibers in an upright form and fibers in a lodging form, and the suede of the suede microfiber leather has visually differentiated appearances; the appearance of the visual differentiation means that the surface presents color brightness differences which can be distinguished by naked eyes and are different in depth; the preparation method comprises the following steps: (1) preparing the non-woven fabric: adopting a non-woven fabric needling process, and respectively adopting a spiral needle with a twisted working part and a vertical conical needle; (2) impregnation of the non-woven fabric; (3) curing and splitting; (4) splitting the skin; and (5) buffing. The suede microfiber leather with the differentiated appearance has a constant differentiated appearance effect, and after contact, the differentiated ...

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Номер записи: 1
29-08-2023 дата публикации

High-speed pseudo-random number generator based on four-dimensional discrete hyperchaotic system and generation method thereof

Номер: CN116661737A
Автор: LI SHOULIANG, WU YE, LIU YINZHE, YANG ZHEN, SHEN YULIN, ZHANG QIBIN
Принадлежит:

The invention provides a high-speed pseudo-random number generator based on a four-dimensional discrete hyper-chaotic system and a generation method thereof, the pseudo-random number generator comprises an input module, an output module, a plurality of operation units and a plurality of register units, by introducing an efficient chaotic model algorithm, the calculated amount is greatly reduced, the FPGA resource utilization rate is reduced to a low level, and the generation efficiency of the pseudo-random number generator is improved. Therefore, the resource utilization efficiency is improved; the rate of the pseudo-random number generated by the method can reach 12.8 Gbps, daily requirements can be met, the method is suitable for high requirements of enterprises and military fields, and the rate exceeds the realization capability of an existing pseudo-random number algorithm.

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Номер записи: 2
25-04-2023 дата публикации

Preparation method of leather-imitated waterborne polyurethane microfiber base cloth

Номер: CN116005462A
Автор: QIAN CHENG, ZHANG QIBIN, SUN XIANGHAO, YANG YINLONG, LI KEJIA
Принадлежит:

The invention relates to a preparation method of leather-imitated waterborne polyurethane microfiber base cloth. The preparation method comprises the following steps: (1) preparing a waterborne polyurethane impregnated material; (2) dipping a sea-island fiber non-woven fabric with the apparent density rho of 0.23-0.26 g/cm < 3 > by using a waterborne polyurethane dipping material, and controlling the liquid carrying rate of the waterborne polyurethane dipping material to be 150-240% to obtain wet cloth; (3) horizontally placing the wet cloth on a platform, and standing for t min, wherein t = a * (475rho-65) +/-15; (4) controlling the waterborne polyurethane impregnated material on the wet cloth after standing to be cured within 1 min; and (5) drying and then removing the marine facies in a decrement manner to obtain the leather-imitated waterborne polyurethane microfiber base cloth. The method disclosed by the invention is simple in process, and polyurethane in the prepared microfiber base ...

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Номер записи: 3