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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 11. Отображено 11.
27-03-2013 дата публикации

C2 front-end hydrogenation catalyst containing composite carrier and preparation method

Номер: CN102989452A
Автор: Liang Yulong, Tan Duping, Liang Kun, Che Chunxia, Li He, Han Wei, Gao Yuan, Jing Xilin, Zhang Feng, Chang Xiaoxin, Xie Wei, Huang Dehua, Lin Hong, Qian Ying, Li Xiaoyin, Fu Hanqi
Принадлежит:

The invention relates to a C2 front-end hydrogenation catalyst containing a composite carrier, the C2 front-end hydrogenation catalyst comprises the following components by taking the mass of the carrier as 100%, 0.02-0.15 parts of palladium and silver, the mass ratio of silver to palladium is 9-1:1, by taking element mass of palladium and silver, the carrier of the catalyst is an alumina-titanium oxide composite carrier with two peaks distribution. by calculating the carrier mass as 100%, the carrier comprises 1-95% of alumina and 5-99% of titanium oxide, and the carrier has the following physical properties: the bulk density is 0.7 to 1.1g/ml, the pore volume is 0.2 to 0.6ml/g, the specific surface area is 3 to 60m<2>/g, the average pore size is 80 to 400nm, 20-370nm preferably; and the carrier has two peaks when the pore size is 60 to 130nm and 400 to 800nm. The invention also discloses the preparation method of the hydrogenation catalyst.

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Номер записи: 1
27-03-2013 дата публикации

Doublet aperture distribution alumina carrier and its preparation method

Номер: CN102989517A
Автор: Che Chunxia, Chang Xiaoxin, Liang Kun, Tan Duping, Fu Hanqi, Gao Yuan, Liang Yulong, Zhang Feng, Han Wei, Li He, Jing Xilin, Xie Wei, Huang Dehua, Zhou Zhiping, Zhao Yurong
Принадлежит:

The invention discloses a doublet aperture distribution alumina carrier. The physical properties of the carrier comprise a bulk density of 0.7-1.1g/ml, a pore volume of 0.3-0.6ml/g, a specific surface area of 3-40m<2>/g and an average aperture of 80-400nm; and the apertures of the carrier have two peaks respectively at 80-160nm and 400-590nm. The invention also discloses a preparation method of the carrier, and a hydrogenation catalyst containing the carrier.

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Номер записи: 2
06-03-2013 дата публикации

Preparation method of oil resistant enhanced styrene-butadiene rubber polymer particles

Номер: CN102952301A
Автор: Wei Xuling, Liang Tao, Liu Baoyong, Fu Hanqi, Wei Yuli, Gong Guangbi, Zheng Jucheng, Xu Dianhong, Zhao Hongguo, Wang Zhenqin, Ai Chunjin, Zhu Jing
Принадлежит:

The invention relates to a preparation method of oil resistant enhanced styrene-butadiene rubber polymer particles. The method comprises the steps that: (1) starch gelatinization modification is carried out, wherein starch and water are added into a reactor; the mixture is stirred such that starch paste is obtained; and a phenolic solution is added, such that modified starch is obtained; (2) enhanced copolymerized styrene-butadiene latex is prepared, wherein water, styrene, an emulsifying agent, and a molecular weight adjusting agent are added into a polymerization vessel; nitrogen is used for replacing; butadiene, isoprene, and the modified starch are added, and a copolymerization reaction is carried out; (3) latex grafting is carried out, wherein water, the enhanced copolymerized styrene-butadiene latex are sequentially added into the polymerization vessel; and polyvinyl chloride is added for carrying out grafting polymerization; and (4) condensation and powder-formation are carried out ...

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Номер записи: 3
29-01-2014 дата публикации

Preparation method of high-performance liquid styrene butadiene rubber

Номер: CN103539949A
Автор: Liang Tao, Wei Xuling, Liu Baoyong, Zhang Huiyi, Zheng Jucheng, Gong Guangbi, Fu Hanqi, Shi Rong, Zheng Hongbing
Принадлежит:

The invention relates to a preparation method of high-performance liquid styrene butadiene rubber. The preparation method comprises the following steps: adding ethanol to a reaction flask; heating to reach 80 to 110 DEG C; adding terpene resin; agitating until terpene resin is dissolved completely; adding a dissolved thickening agent; uniformly agitating and mixing; sequentially adding water, styrene-butadiene latex, an emulsifying agent and a molecular weight regulator to a polymerizing pot; replacing with nitrogen; adding modified terpene resin; agitating and heating; adding an initiator while the temperature of the polymerizing pot reaches 30 to 60 DEG C; reacting for 5 to 8 hours under the polymerization temperature of 30 to 60 DEG C; adding a termination agent to obtain graft latex; adding the graft latex to a condensation kettle; adding water, an anti-aging agent and trialkyl amine chloride; agitating and heating; adding a coagulant under the coagulation temperature of 20 to 80 DEG ...

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Номер записи: 4
19-06-2013 дата публикации

Preparation method of reinforced powdered rubber

Номер: CN103159866A
Автор: Ai Chunjin, Kang Anfu, Gong Guangbi, Fu Hanqi, Zeng Lingzhi, Zheng Jucheng, Zhu Jing, Zhao Xutao, Li Shuyi, Gao Yan, Liang Tao, Li Jing, Ren Zhong, Chen Jiangang, Gao Yangguang, Cong Rixin, He Ying, Hui Jin, Xu Dianhong, Wei Xuling
Принадлежит:

A preparation method of a reinforced rubber powder employs chemical reactions to bond organic siloxane to separant molecules, thus preparing a powdered rubber product with high tensile strength. The method comprises the specific steps of: adding 1-200 parts of organo-siloxane monomer containing unsaturated bonds, 1-35 parts of a molecular weight regulator and 0.1-0.5 part of an initiator into 100 weight parts of unsaturated fatty acid anhydride; conducting polymerization at 5-120 DEG C for 0.5-6.0 h; adding 80-120 parts of basic aqueous solution with mass concentration of 5%w-15%w into the generated mixture for saponification, thereby preparing a separant for standby; calculated by dry weight of the rubber, adding 1-50 parts of the reinforced separant obtained in the above step and 0-100 parts of a coagulant into 100 parts of latex; condensing the mixture into powder at -20-95 DEG C under stirring condition; and dehydrating to obtain the reinforced powdered rubber.

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Номер записи: 5
27-03-2013 дата публикации

C2 front-end hydrogenation catalyst and preparation method

Номер: CN102989453A
Автор: Che Chunxia, Tan Duping, Liang Yulong, Li He, Wang Shufeng, Gao Yuan, Liang Kun, Zhang Feng, Han Wei, Jing Xilin, Xie Wei, Chang Xiaoxin, Qian Ying, Li Xiaoyin, Fu Hanqi
Принадлежит:

The invention relates to a C2 front-end hydrogenation catalyst and a preparation method, the C2 front-end hydrogenation catalyst comprises the following components by taking the mass of the carrier as 100%, 0.02-0.15 parts of palladium and silver, the mass ratio of silver to palladium is 9-1:1. by taking element mass of palladium and silver, the carrier of the catalyst is an alumina-titanium oxide composite carrier with two peaks distribution, by taking the mass of the carrier as 100%, the carrier comprises 1-95% of alumina, 5-60% of zirconia and 5-60% of titanium oxide, and the carrier has the following physical properties: the bulk density is 0.7 to 1.1g/ml, the pore volume is 0.2 to 0.6ml/g, the specific surface area is 3 to 60m<2>/g, the average pore size is 50 to 300nm; and the carrier has two peaks when the pore size is 40 to 120nm and 200 to 400nm. The invention also discloses the preparation method of the hydrogenation catalyst.

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Номер записи: 6
19-06-2013 дата публикации

Preparation method for high performance butadiene-styrene-isoprene powder polymer

Номер: CN103160056A
Автор: Wei Xuling, Liang Tao, Liu Baoyong, Fu Hanqi, Zheng Jucheng, Gong Guangbi, Wei Yuli, Xu Dianhong, Zhu Jing, Ai Chunjin
Принадлежит:

The invention adopts a direct coagulation method for preparation of a high performance butadiene-styrene-isoprene powder polymer. The method comprises the following steps: dispersion of a carbon nanotube: a step of adding the carbon nanotube and water into a high-speed disperser and carrying out stirring to allow the carbon nanotube to be uniformly dispersed; preparation of graft latex: a step of successively adding water, styrene-butadiene latex, an emulsifier and a molecular weight regulator into a polymerization kettle, carrying out nitrogen displacement, adding isoprene, carrying out stirring and heating, adding an initiator and carrying out polymerization to prepare the graft latex; and coagulation for formation of powder: a step of successively adding the graft latex, water and the carbon nanotube into a coagulation kettle, carrying out stirring and heating, adding a release agent, a flocculating agent and a coagulating agent and carrying out curing, washing, dehydration and drying ...

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Номер записи: 7
06-11-2013 дата публикации

Polypropylene preparation method

Номер: CN103382234A
Автор: Xu Renwei, Shi Rong, Zhu Bochao, Wang Xiong, Han Xiaoyu, Ren Feng, Jia Junji, Zhu Yajie, Liu Chaowei, Fu Hanqi, Sun Shilin, Ren Meihong, Bai Hong, Jiang Ligang
Принадлежит:

A polypropylene preparation method comprises: employing a catalyst containing an external electron donor comprising dipiperidinyl methoxysilane A and n-propyl triethoxysilane B (with an A/B molar ratio of 0.02-1.0), a titanium-containing solid main catalyst and an aluminium alkyl compound, at a low hydrogen-propylene molar ratio (H2/C3 <= 0.03), polymerizing by one step to obtain a high-fluidity high-crystallinity polypropylene with MFR being more than 50 g/10 min and isotacticity being more than 98%. The titanium-containing solid main catalyst is prepared by mixing a certain ratio of magnesium halide, an alcohol compound, an organic phosphorous compound, silicone oil and an inert diluent to form a mixed disperse system; adding titanium halide or a derivative thereof, precipitating a solid under the effect of a separation assistant; and further processing with polybasic carboxylic ester, then processing with the titanium halide and an inert diluent to obtain a near-spherical catalyst.

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Номер записи: 8
29-01-2014 дата публикации

Preparation method of high-performance butadiene-styrene liquid rubber

Номер: CN103539912A
Автор: Wei Xuling, Liang Tao, Zheng Jucheng, Gong Guangbi, Shi Rong, Wei Yuli, Fu Hanqi, Liu Baoyong, Li Jing, Chen Jiangang, Bai Jingbing, Cong Rixin, Xu Dianhong, Ma Penggao, Zhu Jing, Ai Chunjin
Принадлежит:

The invention relates to a preparation method of high-performance butadiene-styrene liquid rubber. The preparation method comprises the following steps of adding water and a thickening agent to a reaction flask; agitating until the thickening agent is dissolved completely; adding ethanol to another reaction flask; heating to reach 80 to 110 DEG C; adding terpene resin; agitating until terpene resin is dissolved completely; sequentially adding water, styrene-butadiene latex, an emulsifying agent and a molecular weight regulator to a polymerizing pot; replacing with nitrogen; adding terpene resin; agitating and heating; adding an initiator while the temperature of the polymerizing pot reaches 30 to 60 DEG C; reacting for 5 to 8 hours under the polymerization temperature of 30 to 60 DEG C; adding a termination agent to obtain graft latex; adding the graft latex to a condensation kettle; adding water, an anti-aging agent and trialkyl amine chloride; agitating and heating; adding the dissolved ...

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Номер записи: 9
29-01-2014 дата публикации

Preparation method of high-tenacity bonding type powdered neoprene

Номер: CN103539948A
Автор: Wei Xuling, Liang Tao, Fu Hanqi, Wei Yuli, Liu Baoyong, Zheng Jucheng, Gong Guangbi, Li Jing, Cong Rixin, Xu Dianhong, Ai Chunjin, Zhu Jing
Принадлежит:

The invention relates to a preparation method of thick and high-tenacity bonding type powdered neoprene. The preparation method comprises the following steps of adding neoprene, a thickening agent, water and a molecular weight regulator to a polymerizing pot in sequence; replacing with nitrogen; agitating and heating; adding an initiating agent and an activating agent while the temperature of the polymerizing pot reaches 20 to 35 DEG C; performing graft polymerization reaction at 30 to 50 DEG C; adding a termination agent after the polymerization conversion rate reaches 65 to 75% in order to obtain graft neoprene latex; adding the graft neoprene latex to a condensation kettle; adding a parting agent and a coagulant under the coagulation temperature of 10 to 30 DEG C; uniformly agitating and mixing; heating to reach 20 to 60 DEG C for ageing for 4 to 6 hours; and then separating, dehydrating and drying to obtain thick and high-tenacity bonding type powdered neoprene. The prepared powdered ...

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Номер записи: 10
29-01-2014 дата публикации

Preparation method of easily-emulsified powered rubber for modified asphalt

Номер: CN103539898A
Автор: Liang Tao, Wei Xuling, Wei Yuli, Fu Hanqi, Liu Baoyong, Zheng Jucheng, Gong Guangbi, Li Jing, Cong Rixin, Zheng Hongbing
Принадлежит:

The invention provides a preparation method of easily-emulsified powered rubber for modified asphalt. The preparation method comprises the following steps: carrying out graft copolymerization on a thickening agent, styrene and butadiene so as to prepare copolymerization styrene-butadiene latex, then grafting ester on to the latex so as to prepare grafted latex, and finally coagulating to prepare the powdered styrene-butadiene rubber. The prepared powered rubber is characterized in that the particle diameter is in the range from 0.5mm to 1.50mm, the weight percentage of the bound styrene is 23.5-40.0, the mooney viscosity ML is ML(1+4)<100 DEG C> 40-60, the moisture is less than or equal to 1.0%, and the powered ratio is greater than or equal to 99.5%.

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Номер записи: 11