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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 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 10. Отображено 10.
12-08-2021 дата публикации

CONTROLLABLE AND ADJUSTABLE METAL NANOPARTICLE SUPPORTED POLYMER CATALYST AND PREPARATION METHOD THEREFOR

Номер: AU2021103524A4
Автор: LI SONGJUN, ZHANG CAIFANG, ZHU MAIYONG, SHEN XIAOJUAN, WU SHUPING, JI MINGYANG, ZHANG YUAN, LU JIANWEI, SONG JIANAN, Li, Songjun, Zhang, Caifang, Zhu, Maiyong, Shen, Xiaojuan, Wu, Shuping, Ji, Mingyang, Zhang, Yuan, Lu, Jianwei, Song, Jianan
Принадлежит:

Abstract The present invention provides a controllable and adjustable metal nanoparticle supported polymer catalyst and a preparation method therefor. The metal nanoparticles of the catalyst use a shape memory polymer as a carrier which has a cross-linking stationary phase and a long-chain mobile phase. A long-chain compound and a short chain compound which can produce a cross-linking stationary phase and a long-chain mobile phase through polymerization are selected as a functional monomer, dissolved in an organic solvent together with an active component precursor, an cross-linking agent and an initiator, heated to initiate polymerization under the protection of nitrogen, reduced by sodium borohydride, repeatedly cleaned with water and ethanol, and then dried in vacuum to obtain the metal nanoparticle supported polymer catalyst. The present invention fundamentally solves the core technical problem that most polymer carriers have no thermosensitive phase transition and cannot satisfy controllable ...

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Номер записи: 1
10-12-2014 дата публикации

Preparation method of intelligent non-PNIPAm-based temperature-sensitive nickel catalyst

Номер: CN104190467A
Автор: LI SONGJUN, YUAN XINHUA, ZHU MAIYONG, HU JIE, CAO SHUNSHENG
Принадлежит:

The invention discloses a preparation method of an intelligent non-PNIPAm-based temperature-sensitive nickel catalyst, belonging to the technical field of organic polymer materials. Through imitation of automatic healing functions of organisms, by taking a self-healing polymer as a carrier and nickel nanoparticles as active ingredients, an intelligent adjustable temperature-sensitive nickel-based catalyst is prepared. The preparation method is simple, convenient to operate and low in requirements of the required devices, and has certain universality; the large-scale industrial production is easy to implement.

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Номер записи: 2
07-07-2023 дата публикации

Staged catalytic metal nanoparticle-based polymer reactor, preparation method and application

Номер: CN116396428A
Автор: LI SONGJUN, PU LEI, ZHANG ZIWEN, LU YANSONG, ZHU MAIYONG, SHEN XIAOJUAN
Принадлежит:

The invention provides a graded catalytic metal nanoparticle-based polymer reactor, a preparation method and application, and the preparation method comprises the following steps: (1) dissolving a pyridyl carboxylic acid polymer, a metal salt, a cross-linking agent and an initiator in a solvent, and heating to obtain an electrostatic control layer precursor; (2) reducing the precursor in situ to obtain an electrostatic control layer; and (3) dissolving the sulfonic group long-chain alkene polymer, a cross-linking agent and an initiator in a solvent, immersing the electrostatic control layer in the solvent, and heating to obtain the graded catalytic metal nanoparticle-based polymer reactor. According to the invention, a polymer formed by copolymerizing long-chain alkenes and organic sulfonic acid is used as a long-chain control layer, a polymer formed by copolymerizing carboxyl and pyridyl is used as an electrostatic control layer, and hierarchical control of single-step and cascade reaction ...

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Номер записи: 3
18-07-2023 дата публикации

Al2O3/SiO2/polyurethane super-hydrophobic coating as well as preparation method and application thereof

Номер: CN116445068A
Автор: LI SONGJUN, XIAO YONGTIAN, QI YANG, ZHU MAIYONG, SHEN XIAOJUAN, WAN JIALE, MA WEI
Принадлежит:

The invention provides an Al2O3/SiO2/polyurethane super-hydrophobic coating as well as a preparation method and application thereof, and belongs to the technical field of preparation of super-hydrophobic materials. The preparation method comprises the following steps: by taking an absolute ethyl alcohol-water solution as a solvent, adding a silane coupling agent KH560, a fluorosilane modifier, nano particles Al2O3 and SiO2, mixing, and mixing with a substrate polyurethane solution, thereby obtaining the Al2O3/SiO2/polyurethane super-hydrophobic coating. The Al2O3/SiO2/polyurethane super-hydrophobic coating can quickly form chemical bond curing connection at room temperature after being sprayed, has good stability, wear resistance, super-hydrophobicity and weather resistance, and has good application in a base material coating.

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Номер записи: 4
22-08-2023 дата публикации

Selective switchable polymer catalyst loaded with metal nanoparticles as well as preparation method and application of selective switchable polymer catalyst

Номер: CN116618090A
Автор: LI SONGJUN, PU LEI, XIA ZHEN, ZHU MAIYONG, SHEN XIAOJUAN
Принадлежит:

The invention provides a selective switchable polymer catalyst loaded with metal nanoparticles as well as a preparation method and application of the selective switchable polymer catalyst. The preparation method comprises the following specific preparation steps: dissolving a test substrate and a metal salt in an organic solvent for complexing, then adding a long-chain functional monomer, an acidic functional monomer, a cross-linking agent and an initiator, heating and removing the substrate to obtain a catalyst precursor, and further performing in-situ reduction treatment to obtain the catalyst. And drying to obtain the selective switchable polymer catalyst loaded with the metal nanoparticles. According to the invention, the specific temperature responsiveness of the polymer catalyst is utilized, and the opening and closing of the catalysis process are realized by virtue of the external temperature change, so that the catalysis rate is adjusted, and finally, the catalyst performance capable ...

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Номер записи: 5
18-02-2015 дата публикации

Preparation method of intelligent nickel-based catalyst with automatic on/off control function

Номер: CN104353494A
Автор: LI SONGJUN, YUAN XINHUA, ZHU MAIYONG, HU JIE, CAO SHUNSHENG
Принадлежит:

The invention belongs to the technical field of functional and intelligent macromolecules and in particular relates to a preparation method of an intelligent nickel-based catalyst with an automatic on/off control function. The preparation method comprises the following steps: firstly, dissolving an initiator, functional monomers, an active component precursor and a cross-linking agent in dimethyl sulfoxide, introducing nitrogen into a solution for deoxidization, irradiating by an ultraviolet lamp after deoxidization for initiating polymerization to form a heat-sensitive control layer, and reducing nickel ions in the heat-sensitive control layer through sodium borohydride to form nickel nanoparticles; secondly, swelling any surface of the heat-sensitive control layer subjected to reduction through an acrylamide solution containing an initiator and a cross-linking agent, and irradiating by the ultraviolet lamp for initiating polymerization to form an inert polyacrylamide substrate layer so ...

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Номер записи: 6
04-07-2023 дата публикации

Ag-based temperature zoning response molecularly imprinted polymer tandem catalyst, preparation method and application

Номер: CN116371470A
Автор: LI SONGJUN, PU LEI, ZHU MAIYONG, SHEN XIAOJUAN
Принадлежит:

The invention provides an Ag-based temperature zoning response molecularly imprinted polymer tandem catalyst, a preparation method and application, and the specific preparation method is as follows: (1) preparing a functional layer precursor solution by taking a temperature-sensitive polymer, an acidic functional monomer, a cross-linking agent and an azo initiator as raw materials, and heating and polymerizing to obtain a functional layer; (2) preparing a supporting layer precursor solution by taking a hydrophilic polymer monomer, silver salt, a nitrophenol polymer, a cross-linking agent and an azo initiator as raw materials, immersing the functional layer part into the supporting layer precursor solution, and heating and polymerizing to obtain a double-layer polymer; and (3) reducing the bilayer polymer in situ, and eluting the nitrophenol polymer to obtain the catalyst. According to the invention, acrylamide is utilized to improve the mechanical properties of the tandem catalyst. Introduced ...

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Номер записи: 7
12-03-2014 дата публикации

Preparation method of polyhedral silver phosphate

Номер: CN103626146A
Автор: DIAO GUOWANG, DI JIAN, ZHU MAIYONG, HUANG JIANXIANG
Принадлежит:

The invention relates to a preparation method of polyhedral silver phosphate and belongs to the technical field of photocatalysis. The preparation method comprises the following steps: firstly, mixing a silver nitrate aqueous solution and ammonia water to prepare an ammoniacal silver nitrate; uniformly mixing the ammoniacal silver nitrate and sodium dodecyl benzene sulfonate to form a first mixed solution; uniformly mixing a disodium hydrogen phosphate aqueous solution and sodium dodecyl benzene sulfonate to form a second mixed solution; under the stirring condition, dropwise adding the second mixed solution into the first mixed solution to obtain a yellow turbid solution; finally, after carrying out centrifugal washing on the yellow turbid solution, drying to obtain the polyhedral silver phosphate. The preparation method disclosed by the invention is simple; production can be carried out at room temperature; heating is not needed; the preparation method is energy-saving and environmental-friendly ...

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Номер записи: 8
09-09-2015 дата публикации

A metal-nanoparticle-loaded polymer catalyst capable of classified catalysis for substrates and a preparing method thereof

Номер: CN104888854A
Автор: LI SONGJUN, ZHANG XIN, YUAN XINHUA, ZHU MAIYONG, SHEN XIAOJUAN, WU SHUPING
Принадлежит:

A metal-nanoparticle-loaded polymer catalyst capable of classified catalysis for substrates and a preparing method thereof are provided. A self-classification and self-assembly supermolecule polymer having two kinds of hydrogen bonds with different intensities and having electrostatic interaction is adopted as a carrier of a catalyst active compound. The carrier is prepared by polymerization of vinyl imidazole, olefin acid and alkenyl amide/enol. The catalyst is prepared by dissolving the vinyl imidazole, the olefin acid, the alkenyl amide/enol, an active compound precursor, a crosslinking agent and an initiator into an organic solvent, heating under protection of nitrogen to initiate polymerization to form a polymer catalyst precursor, subjecting metal ions in the polymer catalyst precursor to reduction by sodium borohydride, repeatedly rinsing with water and ethanol, and drying in vacuum. The self-classification and self-assembly supermolecule polymer endows the catalyst with classifying ...

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Номер записи: 9
26-11-2014 дата публикации

Preparation method of high selectivity and specificity nickel-based catalyst

Номер: CN104162451A
Автор: LI SONGJUN, ZHANG XIN, ZHU MAIYONG, YUAN XINHUA, HU JIE, CAO SHUNSHENG
Принадлежит:

The invention belongs to the selective catalytic technical field, and particularly relates to a preparation method of a high-selectivity and specificity nickel-based catalyst. Accdoring to the method, a substrate and an active component precursor are firstly dissolved in dimethylsulfoxide for self-assembly, then an initiator, a functional monomer and a cross linker are dissolved in the dimethylsulfoxide, then nitrogen is introduced into the solution for deoxidation, and after deoxidation, the solution is sealed and put under an ultraviolet lamp for irradiation to cause polymerization to form a catalyst precursor; and nickel ions in the precursor are reduced by sodium borohydride, and the imprinted substrate is by eluted to obtain the high selectivity and specificity nickel-based catalyst.

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Номер записи: 10