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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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Применить Всего найдено 4. Отображено 4.
18-05-2011 дата публикации

Mortar thickening agent and preparation method thereof

Номер: CN0102060469A
Автор: XINGWEN WANG, OU JIANG, RONGPING XU, WANG XINGWEN, JIANG OU, XU RONGPING
Принадлежит:

The invention discloses a mortar thickening agent and a preparation method thereof, belonging to the field of cement additive materials. The mortar thickening agent comprises the following raw materials in parts by weight: 10-35 parts of water reducer, 20-30 parts of water-retaining agent, 15-25 parts of cellulose ether and 30-70 parts of filling agent, wherein the water reducer is sodium beta-naphthaleneformaldehyde condensate sulfonate, sodium lignosulfonate, sulfonated acetone-formaldehyde condensate or sugar calcium water reducer; the water-retaining agent is polyethylene glycol, the types of the cellulose ether are HK100000s, HK80000s, HK150000s and HK40000s; and the filling agent is limestone powder, coal ash or mineral powder. All raw materials are mixed according to the proportion, and uniformly stirred to obtain the mortar thickening agent. The preparation method of the mortar thickening agent is very simple; and according to the preparation method, the construction quality can ...

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Номер записи: 1
18-05-2011 дата публикации

Composite cement grinding aid and preparation method thereof

Номер: CN0102060467A
Автор: XINGWEN WANG, HENG JIANG, RONGPING XU, WANG XINGWEN, JIANG HENG, XU RONGPING
Принадлежит:

The invention discloses a composite cement grinding aid belonging to the technical field of building materials and chemical engineering. The composite cement grinding aid comprises the following raw materials in parts by weight: 5-25 parts of reinforcing agent, 40-80 parts of grinding aid, 1-20 parts of surfactant, 1-20 parts of initiating agent, 1-20 parts of blender and 10-40 parts of water reducing agent. The composite cement grinding aid prepared by using the method is favorable for improving various properties of cement, has low blending quantity, is beneficial to environment protection, hardly causes alkali aggregate reaction of concrete and steel reinforcement corrosion, and is beneficial to the durability of the concrete.

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Номер записи: 2
19-08-2009 дата публикации

Aliphatic high-efficiency water reducing agent and method of producing the same

Номер: CN0101508537A
Автор: WANG XINGWEN, LI BAOLAI, XU RONGPING, CUI XIANGMIN, XINGWEN WANG, BAOLAI LI, RONGPING XU, XIANGMIN CUI
Принадлежит:

The invention provides an aliphatic high-efficiency water reducing agent and a preparation method thereof, wherein the aliphatic high-efficiency water reducing agent ensures that concrete has good workability and durability, has small content of sodium sulfate, has small pollution to the environment, and has no crystals in winter. The aliphatic high-efficiency water reducing agent is prepared by the following raw materials in percentage by mass: 10 to 18 percent of 65 to 85 percent anhydrous sodium sulfite, 5 to 10 percent of 96 to 100 percent sodium sulfanilate, 0.5 to 2 percent of 30 to 40 percent sodium hydroxide, 8 to 15 percent of 99 to 100 percent acetone, 15 to 35 percent of 36.5 to 37.5 percent formaldehyde, and the balance being water. The water reducing agent prepared by the method has low requirement on reaction equipment, can save a large amount of investment, and has the advantages of simple and convenient operation, short production period, no waste materials, wide source ...

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Номер записи: 3
04-11-2009 дата публикации

Data acquisition method, audio mixing method and devices of teleconference

Номер: CN0101572757A
Автор: XU RONGPING, RONGPING XU
Принадлежит:

The embodiment of the invention provides a data acquisition method, an audio mixing method and devices of teleconference. The data acquisition method comprises the following steps: according to the call identification preassigned to a user receiving the teleconference, finding the address corresponding to the memory unit preassigned to the user; finding the memory unit corresponding to the address to obtain the data in the memory unit. Thus, by establishing the corresponding relation between the user receiving the teleconference and the memory unit address, the memory unit can be found quickly, search efficiency is high, time is saved, the processing burden of the processor can be reduced and the audio mixing efficiency during the teleconference can be improved.

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Номер записи: 4