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Применить Всего найдено 11. Отображено 11.
22-06-2016 дата публикации

Preparation millimicron compound fiber's bubble spinning equipment

Номер: CN0205329216U
Автор: LIU FUJUAN, XU LAN, WANG PING, HE JIHUAN
Принадлежит:

... 本实用新型公开了一种制备纳米复合纤维的气泡纺丝装置，包括气泡发生器，位于所述气泡发生器正前方的纤维接收装置，分别与气泡发生器连通的储液池及气泵，所述储液池通过导液管向气泡发生器内输入溶液，所述气泵通过导气管向气泡发生器内供气，所述气泡发生器周边还均匀分布有装载有纳米颗粒的喷涂枪，喷涂枪倾斜设置，喷出的颗粒流相交于气泡发生器出口位置处，与气泡发生器的射流相混合后喷射至纤维接收装置上，通过直接采用气泡发生器与气泵的配合实现气泡纺丝的目的，无需采用静电作用，避免了传统静电纺丝和气泡静电纺丝的高压静电引起的静电污染和潜在危险，实现安全生产。而且，通过使用喷涂枪匀速喷涂纳米颗粒，不仅可以促使气泡破裂，还能与射流充分混合制备纳米复合纤维，提高纳米复合纤维的质量。该装置结构简单、操作方便、工艺流程短，为纳米复合纤维的规模化生产奠定基础。 ...

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Номер записи: 1
06-07-2016 дата публикации

Preparation nanometer porous fiber's bubble spinning equipment

Номер: CN0205368559U
Автор: LIU FUJUAN, LI SHAOKAI, ZHENG FANGFANG, FANG YUE, LI JUNHUA, HE JIHUAN
Принадлежит:

... 本实用新型公开了一种制备纳米多孔纤维的气泡纺丝装置，包括气泡发生器，位于所述气泡发生器正上方的纤维接收电极，分别与气泡发生器连通的储液池及气泵，所述储液池通过导液管向气泡发生器内输入溶液，所述气泵通过导气管向气泡发生器内供气；所述气泡纺丝装置还包括防止气泡发生器喷出射流发散的挡板，所述挡板设置于所述气泡发生器与纤维接收电极之间，且所述挡板相对气泡发生器的轴向位置可调。通过直接采用气泡发生器与气泵的配合实现气泡纺丝的目的，无需采用静电作用，避免了高压静电引起的静电污染和潜在危险，实现安全生产。通过在气泡发生器与纤维接收电极之间设置挡板，有效地引导射流运动轨迹，改善射流发散、不稳定的问题，提高生产效率。 ...

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Номер записи: 2
25-04-2023 дата публикации

Bifunctional oxygen electrocatalyst with bimetal spinel structure as well as preparation method and application of bifunctional oxygen electrocatalyst

Номер: CN116014152A
Автор: WANG PING, XI RUIFAN, XU XIAOTING, ZHANG YAN, LI YUANYUAN, XU LAN, LIU FUJUAN
Принадлежит:

The invention relates to a preparation method of a titanium dioxide loaded bifunctional oxygen electrocatalyst with a bimetal spinel structure. The preparation method comprises the following steps: firstly, dissolving polyvinylpyrrolidone (PVP), cobalt acetylacetonate and ferric acetylacetonate in ethanol, and stirring to obtain clear and transparent sol; the preparation method comprises the following steps: dissolving tetra-n-butyl titanate (TBT) in a mixed solution of alcohol and acetic acid to obtain a solution; mixing the two, performing electrostatic spinning to prepare a nanofiber membrane, and performing high-temperature annealing to obtain the bimetallic spinel catalyst. A large number of pore structures and nano channels are formed in the catalyst material, electron conduction is facilitated, and the catalyst shows high initial potential, low overpotential, high limiting current density and low overpotential gaps in oxygen electro-catalysis due to the bimetal existence form of ...

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Номер записи: 3
25-04-2023 дата публикации

Data processing method and system for file

Номер: CN116010547A
Автор: TONG YUZHEN, CHENG CHANGQING, LIU FUJUAN, DENG JIEPENG
Принадлежит:

The invention provides a data processing method and system for a file, and the method comprises the steps: judging whether a file can be directly subjected to text extraction or not, and if yes, entering a next step; performing text extraction on the file to obtain text content of the file; positioning a target page for the acquired text content by using a regular matching technology; extracting the positioned target page as an image file; removing a page watermark of the image file by using an image processing technology; extracting page data of the image file by using a computer visual identification technology, and extracting a data arrangement structure of the page data by using a layout identification technology; and performing format correction operation on the extracted page data, and perfecting a data arrangement structure. According to the data processing method and system for the file, compared with a pure text extraction method and an image extraction method, the extraction efficiency ...

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Номер записи: 4
14-07-2023 дата публикации

Scale type bubble spinning device and method

Номер: CN116427038A
Автор: LIU FUJUAN, CHANG YAWEN
Принадлежит:

The invention discloses a scale type bubble spinning device and method. The spinning device comprises a liquid supply unit; a gas supply unit; a foaming unit; and a receiving unit. On one hand, an airflow field penetrating through the main pipe and the branch pipes is adopted to replace an electrostatic field formed by a high-voltage power supply, the preparation process is simpler and safer, green production is achieved, the environment-friendly concept is met, meanwhile, under the pressure of the internal airflow field, an injection opening can be kept unblocked all the time, blockage is avoided, and the preparation efficiency is effectively improved; on the other hand, flexible switching between nanofiber membrane preparation and nanofiber tube preparation is achieved, the preparation functions are rich, and the practicability of the spinning device is effectively improved.

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Номер записи: 5
01-08-2023 дата публикации

Lithium ion self-supporting silicon-carbon composite nanofiber negative electrode material and preparation method and application thereof

Номер: CN116516522A
Автор: XU LAN, WANG JIE, WANG PING, LIU FUJUAN
Принадлежит:

The invention belongs to the field of lithium ion batteries, and particularly relates to a lithium ion self-supporting silicon-carbon composite nanofiber negative electrode material as well as a preparation method and application thereof. The silicon-carbon negative electrode material with double-layer protection is prepared by utilizing high-temperature calcination and coaxial electrostatic spinning, and the cycling stability of the negative electrode material is improved. The double structure design of the silicon monoxide protective shell and the skin core can effectively relieve the volume expansion stress of the silicon nanoparticles, and effectively solve the problems that the diffusion migration path of the existing lithium ion battery in the charging and discharging process is long, the nano silicon particles are pulverized and collapsed due to the volume expansion effect, the nano silicon particles are separated from an electrode plate, and the service life of the nano silicon ...

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Номер записи: 6
18-04-2023 дата публикации

Thermal insulation material, firefighter uniform fabric and preparation method of firefighter uniform fabric

Номер: CN115976832A
Автор: LIU FUJUAN, XUE RUJING
Принадлежит:

The invention discloses a thermal insulation material, a firefighter uniform fabric and a preparation method thereof. The preparation method of the thermal insulation material comprises the following steps: uniformly dispersing a zeolite imidazate skeleton compound in a silicon dioxide aerogel solution to obtain a treatment solution, attaching the treatment solution to an aramid fiber 1313 non-woven fabric, and sequentially carrying out gelation, aging, replacement modification and drying treatment to obtain the thermal insulation material. The invention also provides the thermal insulation material prepared by the method, and a firefighter uniform fabric containing the thermal insulation material. As the treating fluid contains the zeolite imidazate framework compound and the silicon dioxide aerogel, the thermal insulation material has improved thermal insulation performance and mechanical properties.

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Номер записи: 7
17-08-2021 дата публикации

Modified fiber reinforced polylactic acid composite material and preparation method thereof

Номер: CN113263791A
Автор: WANG PING, SONG XUEYANG, ZHANG YAN, LI YUANYUAN, XU LAN, LIU FUJUAN, 王萍, 宋雪旸, 张岩, 李媛媛, 徐岚, 刘福娟
Принадлежит:

The invention discloses a modified fiber reinforced polylactic acid composite material and a preparation method thereof. The preparation method comprises the following steps: performing radiation treatment on rubber latex to vulcanize rubber molecules in the rubber latex and generate polar groups in the rubber molecules; carrying out vacuum spray drying treatment on the rubber latex subjected to radiation treatment to obtain vulcanized rubber particles; carrying out grafting reaction on the vulcanized rubber particles and the jute fiber cloth so as to graft the vulcanized rubber particles on the fiber surface of the jute fiber cloth; sequentially carrying out washing treatment and centrifugal treatment on the jute fiber cloth after the grafting reaction; drying the jute fiber cloth subjected to centrifugal treatment to obtain the modified jute fiber cloth; and alternately stacking polylactic acid films and the modified jute fiber cloth and performing hot pressing so that any layer of modified ...

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Номер записи: 8
15-08-2023 дата публикации

Novel lithium ion hybrid supercapacitor and preparation method thereof

Номер: CN116598149A
Автор: XU LAN, WEI DONG, LIU FUJUAN, WANG PING
Принадлежит:

The invention discloses a novel lithium ion hybrid supercapacitor and a preparation method thereof. The preparation method comprises the following steps: preparing a positive electrode material, pre-oxidizing a ZIF-67/PAN nanofiber membrane, then immersing the pre-oxidized ZIF-67/PAN nanofiber membrane in a NaOH solution for etching treatment, and finally performing high-temperature carbonization to obtain a graded porous carbon material (PCNFM); the method comprises the following steps: preparing a ZIF-67/PAN nanofiber membrane, preparing a negative electrode material, pre-oxidizing the ZIF-67/PAN nanofiber membrane, then immersing the pre-oxidized ZIF-67/PAN nanofiber membrane in a Na2SnO3 solution for anion exchange treatment, finally performing high-temperature carbonization to obtain an intercalated carbon material (CoSnX/CNFM) with a Li < + > deintercalation function, and then assembling the electrode material, a shell, an electrolyte, a diaphragm, a stainless steel sheet and an elastic ...

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Номер записи: 9
21-07-2023 дата публикации

Electrostatic spinning device and method for preparing multi-strand nanofiber yarn in batches

Номер: CN116463735A
Автор: LIU FUJUAN, CHANG YAWEN
Принадлежит:

The invention discloses an electrostatic spinning device and method for preparing multi-strand nanofiber yarn in batches. The spinning device comprises an injection unit, a spinning unit and a spinning unit, a power supply unit; a collection unit; and a twisting unit. On one hand, each injection pipeline is connected with a plurality of needle heads distributed at intervals, so that a plurality of mutually separated nanofiber filaments are formed in the same electric field, and subsequent processing is facilitated; on the other hand, the multiple needles in each group are distributed around the vortex sprayed out of the air guide pipe, the spinning solution jet flow sprayed out of the needles can synchronously implement the stretching filament forming process and the twisting yarn forming process, meanwhile, a buncher is combined, multiple strands of nanofiber yarn can be automatically folded and collected, operation is greatly simplified, spinning time is shortened, the yield is effectively ...

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Номер записи: 10
02-05-2023 дата публикации

Heat-insulating porous micro-nanofiber membrane and preparation method thereof

Номер: CN116043419A
Автор: LIU FUJUAN, ZHUGE YINA
Принадлежит:

The invention discloses a heat-insulating porous micro-nanofiber membrane and a preparation method thereof. The method comprises the following steps that 1, an oil phase is added into a continuous phase under stirring, stirring is conducted till complete emulsification is achieved, microemulsion is obtained, the oil phase contains ethyl alcohol, acetic acid, hexadecyl trimethyl ammonium bromide and liquid paraffin, and the continuous phase contains polyimide, polysulfonamide and N, N-dimethylacetamide; 2) performing electrostatic spinning on the microemulsion to obtain a micro-nano fiber membrane; and 3) calcining the micro-nano fiber membrane to obtain the heat-insulating porous micro-nano fiber membrane. According to the preparation method, the micro-nanofiber membrane is prepared from the micro-emulsion through electrostatic spinning, then the micro-nanofiber membrane is calcined, the organic solvent and the liquid paraffin in the micro-nanofiber membrane are volatilized out, a porous ...

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Номер записи: 11