Настройки

Укажите год
-

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

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 12. Отображено 12.
23-06-2023 дата публикации

High-entropy perovskite type electromagnetic wave absorbing material and preparation method thereof

Номер: CN116282214A
Автор: FAN BINGBING, WANG YIXUE, CHEN YONGQIANG, ZHOU YANCHUN, ZHANG RUI, WANG HAILONG, LI MINGLIANG, LI MENGRU
Принадлежит:

The invention belongs to the technical field of electromagnetic wave absorbing materials, and discloses a high-entropy perovskite type electromagnetic wave absorbing material and a preparation method thereof. The invention provides a high-entropy perovskite type electromagnetic wave absorbing material. Compared with a traditional microwave absorbent, the obtained high-entropy perovskite type electromagnetic wave absorbing material has the advantages of being wide in effective absorption frequency band and high in absorption strength under the condition of low thickness. Meanwhile, the invention also provides a preparation method of the high-entropy perovskite type electromagnetic wave absorbing material, the high-entropy perovskite type electromagnetic wave absorbing material is prepared by combining a sol-gel method with a calcining process, and the working procedures of grinding and compression are omitted; water is used as a solvent, highly toxic chemical reagents are not needed, and ...

Подробнее
Номер записи: 1
15-08-2023 дата публикации

Graphene/titanium dioxide/graphite phase carbon nitride composite aerogel as well as preparation method and application thereof

Номер: CN116586097A
Автор: XU HONGLIANG, NIU YONGQIANG, LI MINGLIANG, SHAO GANG, LIU WEN, SONG BO, ZHU JINPENG, WANG HAILIANG, FAN BINGBING, WANG HAILONG, LU HONGXIA
Принадлежит:

The invention relates to a preparation method of graphene/titanium dioxide/graphite phase carbon nitride composite aerogel. The preparation method comprises the following steps: 1) stripping graphite phase carbon nitride (g-C3N4) by using a thermal stripping method to obtain a g-C3N4 nanosheet; 2) in the presence of absolute ethyl alcohol, uniformly mixing the g-C3N4 nanosheet with tetrabutyl titanate and hydrofluoric acid, putting the mixture into a reaction kettle, performing hydrothermal reaction for 18-24 hours at 170-190 DEG C, washing powder obtained by the hydrothermal reaction, and performing secondary heat treatment for 2-2.5 hours at 430-470 DEG C to obtain titanium dioxide/graphite phase carbon nitride composite powder; and 3) in the presence of distilled water, uniformly mixing the titanium dioxide/graphite-phase carbon nitride composite powder with graphene oxide, adding ascorbic acid and polyethylene glycol, then putting the mixture into a reaction kettle, carrying out hydrothermal ...

Подробнее
Номер записи: 2
15-08-2023 дата публикации

Vermiculite/graphite-phase carbon nitride/bismuth oxybromide composite photocatalytic material as well as preparation method and application thereof

Номер: CN116586098A
Автор: XU HONGLIANG, ZHANG SHIZHENG, SONG BO, LI MINGLIANG, WANG HAILIANG, CHEN YONGQIANG, SHAO GANG, FAN BINGBING, LU HONGXIA, WANG HAILONG
Принадлежит:

The invention relates to a preparation method of a vermiculite/graphite-phase carbon nitride/bismuth oxybromide composite material. The preparation method comprises the following steps: 1) carrying out expansion treatment on vermiculite particles pretreated by hydrogen peroxide by utilizing a microwave heating method to obtain expanded vermiculite particles; (2) adding the expanded vermiculite particles and melamine into water, stirring, heating, evaporating to dryness liquid, and calcining a solid mixture to prepare a vermiculite/g-C3N4 composite material; and 3) adding the vermiculite/g-C3N4 composite material and sodium bromide into water, stirring, adding bismuth nitrate pentahydrate dissolved by glacial acetic acid, stirring to react, standing at room temperature, aging, filtering, washing and drying to obtain the product. According to the vermiculite/g-C3N4/BiOBr composite material disclosed by the invention, the expanded vermiculite with a relatively large specific surface area and ...

Подробнее
Номер записи: 3
14-07-2023 дата публикации

Intelligent data acquisition system and working condition identification system for variable working condition equipment

Номер: CN116434372A
Автор: LIU CHANG, HE FEIFEI, XIAO JIAN, FAN BINGBING
Принадлежит:

The invention discloses an intelligent data acquisition system and a working condition identification system for variable working condition equipment. The data acquisition system comprises a rotating speed prediction module, a parameter configuration module and a data acquisition module; the working condition identification system comprises an acquisition module, a determination module and a data storage module. According to the method, the rotating speed is predicted, so that the sampling rate of each sensor at different rotating speeds and the sampling time interval of each collection of the system are automatically matched, the working conditions of the collected data are automatically identified according to the characteristic curve intervals of different physical quantities of equipment, and the data are stored or deleted according to different working conditions; the validity of the data for state monitoring and fault diagnosis of the variable working condition equipment and the reasonability ...

Подробнее
Номер записи: 4
08-08-2023 дата публикации

Rolling bearing health state evaluation method based on autocorrelation coefficient sparseness characteristics

Номер: CN116558828A
Автор: LIU CHANG, YANG ENSHAN, XIAO JIAN, FAN BINGBING
Принадлежит:

The invention discloses a rolling bearing health state evaluation method based on a self-correlation coefficient sparseness characteristic, and the method comprises the steps: carrying out the sparseness of a full-life vibration signal of a rolling bearing through a competition function, and obtaining a full-life vibration sparse signal of the rolling bearing; carrying out self-correlation processing on the full-life vibration sparse signal of the rolling bearing to obtain a self-correlation coefficient; preprocessing the autocorrelation coefficient with the determined length to obtain a preprocessed autocorrelation coefficient; determining a threshold value according to the pre-processing autocorrelation coefficient; according to a threshold value, determining a sparseness characteristic index of the pre-processing autocorrelation coefficient; and according to the sparseness characteristic index of each rolling bearing full-life vibration signal, drawing a rolling bearing health state ...

Подробнее
Номер записи: 5
17-08-2021 дата публикации

Seed crystal induced microwave synthesized SiC crystal and preparation method thereof

Номер: CN113264774A
Автор: ZHANG RUI, GUAN LI, WANG HAILONG, LI ZHE, ZHANG XINYUE, GAO QIANCHENG, ZHAO BIAO, GUO SHAOJIE, LI MINGLIANG, FAN BINGBING, 张锐, 关莉, 王海龙, 李哲, 张新月, 高前程, 赵彪, 郭少杰, 李明亮, 范冰冰
Принадлежит:

The invention discloses a seed crystal induced microwave synthesized SiC crystal and a preparation method thereof, and relates to the technical field of inorganic non-metallic materials. The preparation method comprises the following steps: uniformly mixing silicon powder, nano carbon black and SiC seed crystal to obtain mixed powder, pressing the mixed powder into a green body, heating by adopting microwaves, and keeping the temperature at 800-1100 DEG C for 15-30 minutes to synthesize the SiC crystal, thereby obtaining the seed crystal induced microwave synthesized SiC crystal. Compared with the existing seed crystal induction technology in industry, the method provided by the invention has the advantage that the difficulty and process conditions of SiC crystal synthesis are greatly reduced. The microwave and seed crystal composite induced synthesis of SiC has a good application prospect.

Подробнее
Номер записи: 6
07-04-2023 дата публикации

Transition metal high-entropy ceramic oxide composite material powder and preparation method thereof

Номер: CN115925392A
Автор: GUAN LI, ZHANG RUI, WANG YANKE, WANG HAILONG, LI MINGLIANG, SONG BOZHEN, LIU HAOJIA, GUO XIAOQIN, WANG XULEI, GAO QIANCHENG, ZHANG XIN YUE, FAN BINGBING
Принадлежит:

The invention relates to the technical field of high-entropy ceramics, and provides transition metal high-entropy ceramic oxide composite material powder and a preparation method thereof. MgO powder, TiO2 powder, NiO powder, CuO powder and ZnO powder are mixed, then the obtained mixed powder is subjected to microwave sintering, and transition metal high-entropy ceramic oxide composite material powder is obtained. The (MgTiNiCuZn) O high-entropy ceramic is synthesized through microwave sintering, the operation method is simple, the sintering time is short, no pollution is generated, the national policy of energy conservation and environmental protection is met, and the application prospect is wide; and the (MgTiNiCuZn) O high-entropy ceramic oxide composite material powder prepared by the method belongs to a brand new material, enriches the material system of the high-entropy ceramic oxide, and provides a new direction for the research of high-entropy ceramics.

Подробнее
Номер записи: 7
11-08-2023 дата публикации

Microwave magnesium smelting device and smelting method

Номер: CN116574926A
Автор: CHEN YONGQIANG, ZHANG RUI, FAN BINGBING, CHEN MAO, WANG HAILONG, LI HONGXIA, SHAO GANG, LIU GUOQI, WANG GANG, SONG BO
Принадлежит:

The invention discloses a microwave magnesium smelting device and a smelting method, and belongs to the technical field of microwave smelting. The microwave magnesium smelting device comprises a shell, a wave-absorbing tank body is arranged in the shell, and a wave-absorbing center cylinder is arranged in the tank body; a crystallization unit is arranged above the shell, an upper cover plate is arranged above the crystallization unit, and a wave-transparent heat insulation plate is arranged between the top of the tank body and the crystallization unit; a lower cover plate is arranged below the shell, and a deslagging cylinder is arranged between the lower cover plate and the tank body; a plurality of microwave generators I are arranged on the shell, a plurality of microwave generators II are arranged on the upper cover plate, and the microwave generators II are positioned right above the cavity for accommodating the raw materials; a plurality of magnesium steam inlet holes are formed in ...

Подробнее
Номер записи: 8
15-08-2023 дата публикации

Perovskite type ceramic material and preparation method and application thereof

Номер: CN116589264A
Автор: FAN BINGBING, ZHOU YANCHUN, LI MENGRU, ZHANG RUI, DING YANGYANG, CHEN YONGQIANG, WANG HAILONG, LI JINLU, SONG JINGWEN
Принадлежит:

The invention belongs to the technical field of high-entropy ceramic materials, and provides a perovskite type ceramic material as well as a preparation method and application thereof, and the ceramic material is Srx (CryMnyFeyCoyNiy) O3, x ranges from 0.5 to 1.5, and y ranges from 0.1 to 0.3. The perovskite type ceramic material provided by the invention is compounded with paraffin according to the mass ratio of 4: 1, when the thickness is 2.8 mm, the absorption frequency band width can reach 2GHz, the lowest reflection loss can reach-43.17 dB, and the perovskite type ceramic material has the characteristics of wide effective absorption frequency band and high absorption strength under the condition of low thickness. The invention also provides a preparation method of the perovskite type ceramic material. The preparation method comprises the following steps: mixing an inorganic salt solution with a precipitant solution, and calcining to obtain the perovskite type ceramic material. Water ...

Подробнее
Номер записи: 9
07-07-2023 дата публикации

Preparation method of aluminum nitride powder

Номер: CN116396082A
Автор: WANG HAILONG, YUAN NANNAN, SONG BO, CHEN YONGQIANG, FAN BINGBING, ZHANG KAI, SHAO GANG, LU HONGXIA, XU HONGLIANG
Принадлежит:

The invention provides a preparation method of aluminum nitride powder, and belongs to the technical field of ceramic powder preparation. The method comprises the following steps: mixing an aluminum source, a carbon source, metal chloride and water to obtain a mixed solution; heating the mixed solution, and adding ammonia water to obtain milk white sol; and finally, sequentially carrying out freeze drying, calcination treatment and carbon removal treatment on the milk white sol to obtain the aluminum nitride powder. According to the method, a sol-gel method and a carbon thermal reduction method are combined together, an inorganic salt assisting mode is adopted, the reaction temperature is reduced, the aluminum nitride powder can be prepared at low cost, the prepared aluminum nitride powder has high purity and good sphericity and granularity, and the particle size range of the aluminum nitride powder is 100-500 nm.

Подробнее
Номер записи: 10
22-08-2023 дата публикации

Microwave hot pressing sintering mold and using method

Номер: CN116625120A
Автор: CHEN YONGQIANG, FAN BINGBING, ZHANG RUI, WANG HAILONG, SHAO GANG, LI HONGXIA, LIU GUOQI, XU HONGLIANG, SONG BO, MA CHAO
Принадлежит:

The invention discloses a microwave hot-pressing sintering mold and a using method, and relates to the field of microwave sintering devices.The microwave hot-pressing sintering mold comprises an upper hydraulic ejector rod, a lower hydraulic ejector rod and a hot-pressing heat preservation mold, the hot-pressing heat preservation mold comprises a pressing head, a pressing column mold, a mold sleeve mold, an upper gasket and a lower gasket, and the inner layer of the mold sleeve mold is a mold layer; the outer layer of the die sleeve die is a heat preservation layer, the die layer has high density, and the heat preservation layer is of a porous structure. The mold is made of wave-transparent materials, so that the mold does not disturb electromagnetic field distribution in the microwave resonant cavity in the using process, microwaves can completely act on a sintered sample, meanwhile, the advantages of microwave sintering and hot pressing sintering are combined, and for ceramic which is ...

Подробнее
Номер записи: 11
14-07-2023 дата публикации

Boron nitride and silicon dioxide composite ceramic aerogel and preparation method thereof

Номер: CN116425554A
Автор: CHEN YONGQIANG, FAN BINGBING, SONG ZIJIE, ZHANG RUI, WANG HAILONG, SHAO GANG, LI HONGXIA, LIU GUOQI, WANG GANG, SONG BO
Принадлежит:

The invention belongs to the technical field of thermal insulation materials, and discloses boron nitride and silicon dioxide composite ceramic aerogel and a preparation method thereof. The method comprises the following steps: firstly dipping boron nitride aerogel in a silicon dioxide aerogel precursor solution, then dipping in a mixed solution of ammonia water/absolute ethyl alcohol to carry out condensation polymerization, and aging and drying to obtain the boron nitride-silicon dioxide composite ceramic aerogel. The silicon dioxide precursor solution is fully impregnated on the boron nitride aerogel, and the boron nitride aerogel is used as a support skeleton of the silicon dioxide aerogel, so that the problems that the structure is easy to collapse and the like in the preparation process of the pure silicon dioxide aerogel are solved, and a micro-nano size three-dimensional grid fiber structure of the boron nitride aerogel is reserved; the material has the advantages of low density ...

Подробнее
Номер записи: 12