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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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Форма поиска

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 15. Отображено 15.
25-08-2023 дата публикации

Porous high-elastic buffer damping cloth for polishing and preparation process thereof

Номер: CN116638451A
Принадлежит:

The invention discloses porous high-elasticity buffer damping cloth for polishing and a preparation process of the porous high-elasticity buffer damping cloth, and belongs to the technical field of damping cloth. The porous high-elastic buffering damping cloth for polishing comprises a nylon base material layer, a hot melt adhesive layer, an EVA sponge layer, a plush ring layer and a damping cloth cover cloth layer, and the damping cloth cover cloth layer, the damping cloth base material layer, the EVA sponge layer and the plush ring layer are sequentially arranged from top to bottom. The hot melt adhesive layer is arranged among the damping cloth cover cloth layer, the damping cloth base material layer, the EVA sponge layer and the plush ring layer for connection. According to the damping cloth, the existing problems are solved, when the high-density sponge and the low-sealing sponge are assembled, the concave-convex joint can resist the rotating torque to the maximum extent, and the problem ...

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21-07-2023 дата публикации

Adsorption pad with high rebound rate and preparation method

Номер: CN116461175A
Принадлежит:

The invention discloses an adsorption pad with a high rebound rate and a preparation method, and belongs to the technical field of adsorption pads. The adsorption pad with the high rebound rate comprises a base layer, an adsorption layer and a protective film, the adsorption layer is bonded to the upper surface of the base layer through a bonding layer, the protective film is bonded to the upper surface of the adsorption layer, the adsorption layer comprises a foaming layer, a supporting layer and supporting pieces, and the supporting pieces are distributed on the lower surface of the supporting layer in an array mode. According to the adsorption pad with the high resilience rate and the preparation method, the problem that an existing adsorption pad is low in overall compression resilience rate is solved, the foaming layer is provided with the water-drop-shaped porous structure, so that the foaming layer can have the high compression rate and the high adsorption capacity, the foaming layer ...

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07-07-2023 дата публикации

Polishing pad for rough polishing of quartz substrate and preparation method of polishing pad

Номер: CN116394156A
Принадлежит:

The invention discloses a polishing pad for rough polishing of a quartz substrate and a preparation method of the polishing pad, and relates to the technical field of polishing pads. The preparation method of the polishing pad comprises the following steps that S1, at the room temperature, non-woven fabric is put into steeping liquor to be steeped; s2, scraping the impregnation liquid on the surface of the non-woven fabric by using a scraper to obtain the impregnated non-woven fabric; and S3, the soaked non-woven fabric is put into a water tank to be subjected to standing and drying, and the polishing pad is obtained. The modified polyurethane is added into the prepared polishing pad, the prepared modified polyurethane serves as impregnation liquid to impregnate the non-woven fabric, polyurethane is evenly dispersed in the treated non-woven fabric, and the polishing pad is good in water permeability and high in hardness and meets the industry requirements of the polishing step of quartz ...

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11-08-2023 дата публикации

Damping cloth for optical lens and preparation method thereof

Номер: CN116575245A
Принадлежит:

The invention discloses damping cloth for an optical lens and a preparation method of the damping cloth, and belongs to the technical field of damping cloth. Urethane acrylate and isobornyl methacrylate are stirred and mixed, then an initiator and an accelerant are added for stirring and mixing, vacuum defoaming is conducted, and a urethane acrylate adhesive is obtained; the two faces of the melt-blown cloth are both coated with a polyurethane acrylate adhesive in a roller coating mode, and base cloth is obtained after curing; the preparation method comprises the following steps: performing napping treatment on one side of base cloth to obtain a base layer, spreading the base layer and enabling the napped side to face upwards, coating the napped side of the base layer with a polyurethane prepolymer, reacting and curing to obtain a surface layer, and preparing the damping cloth for the optical lens, after the polypropylene resin is modified by the modified lignin, the flexibility of the ...

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09-06-2023 дата публикации

White pad capable of stably keeping grinding fluid and preparation process of white pad

Номер: CN116237867A
Принадлежит:

The invention discloses a white pad capable of stably keeping grinding fluid and a preparation process of the white pad, and belongs to the technical field of white pads. The white pad capable of stably maintaining the grinding fluid comprises polishing pads, bonding layers and a supporting layer, the upper circumferential face and the lower circumferential face of the supporting layer are evenly coated with the bonding layers, and the two polishing pads are pasted and pressed through the bonding layers and the upper face and the lower face of the supporting layer. The problems that in the prior art, polishing can only be conducted through one face of a polishing pad, and grinding liquid on the polished surface flies out during polishing, so that the grinding liquid cannot be stabilized; in order to solve the problem that the existing requirements cannot be met due to the fact that the polishing pad is arranged on the surface of the polishing pad, the grinding fluid can be well retained ...

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21-07-2023 дата публикации

Polyurethane composite polishing pad and preparation method thereof

Номер: CN116460734A
Принадлежит:

The invention discloses a polyurethane composite polishing pad and a preparation method thereof, and belongs to the technical field of polishing pad preparation.The preparation method comprises the steps that firstly, 10-20 parts by weight of polyurethane resin, 70-95 parts by weight of solvent, 3-5 parts by weight of polishing agent and 5-10 parts by weight of reinforcing component are added into a mixing machine and stirred and mixed for 0.5-1 h to obtain steeping liquor, a base material is steeped into the steeping liquor at the room temperature, and the polyurethane composite polishing pad is obtained; aiming at the problems that an existing composite polishing pad is poor in heat conduction and abrasion resistance, the polyurethane composite polishing pad is provided, non-woven fabric or woven fabric is used as a base material, reinforcing components are introduced into polyurethane steeping liquor, on the premise that the water permeability of the polishing pad is not reduced, the ...

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16-05-2023 дата публикации

Heat insulation polyester fiber and preparation method thereof

Номер: CN116121904A
Автор: YANG HUIMING, YANG JIANYA
Принадлежит:

The invention relates to the technical field of textiles, and particularly discloses a heat insulation polyester fiber and a preparation method thereof. The invention relates to a heat insulation polyester fiber, which is prepared from the following raw materials in parts by weight: 100 parts of polyester master batch, 2.8 to 14.6 parts of compatibilizer, 18.4 to 42.2 parts of modified silicon dioxide gel particles and 0.003 to 0.01 part of assistant, the modified silica gel particles are of a core-shell structure, porous silica gel is used as a core material, and the outer layer of the core material is coated with polyurethane foaming resin. The compatibilizer is used for promoting the compatibility of the modified silicon dioxide gel particles and the polyester master batch, and the modified silicon dioxide gel particles are high in air content and low in heat transfer coefficient, so that the heat insulation and heat preservation performance of the polyester fiber can be effectively ...

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27-06-2023 дата публикации

Power equipment maintenance tool box

Номер: CN116330237A
Принадлежит:

The invention relates to a power equipment maintenance tool box which comprises a first cabinet body, a second cabinet body and a third cabinet body, the second cabinet body and the third cabinet body are perpendicularly connected with the two ends of the first cabinet body respectively, the first cabinet body, the second cabinet body and the third cabinet body are each of a drawer cabinet structure, and each drawer cabinet structure is provided with a plurality of drawer cabinets and switch cabinets which are distributed in a grid mode. The drawer cabinet and the switch cabinet are matched with the electrical equipment maintenance tool in size; the joint of the first cabinet body and the second cabinet body and the joint of the first cabinet body and the third cabinet body are both supporting frame bodies, and the second cabinet body is provided with a working table top. Compared with the prior art, the multifunctional toolbox has the advantages of integration of multiple purposes of the ...

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04-08-2023 дата публикации

Generator choke ring dismounting device

Номер: CN116545195A
Принадлежит:

The invention relates to a generator choke ring dismounting device which is arranged in a generator stator chamber, a generator rotating shaft and a generator choke ring are arranged in the generator stator chamber, the generator choke ring is in a circular ring shape and is arranged on the inner wall of the middle of the generator stator chamber, the generator rotating shaft is located in the generator choke ring, and the generator rotating shaft is located in the generator choke ring. The disassembling and assembling device comprises a plurality of journal sticking fixing hoops arranged on the generator rotating shaft in a sleeving mode, a supporting and fixing assembly is arranged at one end of each journal sticking fixing hoop, the multiple supporting and fixing assemblies are connected through a sliding rail, the top of the sliding rail abuts against the top of an inner ring of the generator choke ring, and the top of the sliding rail abuts against the top of an outer ring of the generator ...

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25-04-2023 дата публикации

Preparation method of thermal-insulation antibacterial colored polyester fiber and thermal-insulation antibacterial colored polyester fiber

Номер: CN116005293A
Автор: YANG HUIMING, YANG JIANYA
Принадлежит:

The invention relates to the technical field of textile processing, and particularly discloses a preparation method of a heat-preservation antibacterial colored polyester fiber and the heat-preservation antibacterial colored polyester fiber. The preparation method of the thermal-insulation antibacterial colored polyester fiber comprises the following steps: preparation of the antibacterial master batch, preparation of the outer layer raw material, preparation of the inner layer raw material and preparation of the thermal-insulation antibacterial colored polyester fiber. Wherein the antibacterial master batch is prepared by compounding nano zinc oxide and modified polyhexamethylene diamine guanidine hydrochloride, and the modified polyhexamethylene diamine guanidine hydrochloride is prepared by reacting the polyhexamethylene diamine guanidine hydrochloride with glycerol tri (1, 2-epoxy) propyl ether. The antibacterial master batch, the PET color master batch and the PET are compounded to ...

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14-07-2023 дата публикации

Tensile white buffing for crystal polishing and production process of tensile white buffing

Номер: CN116423403A
Принадлежит:

The invention discloses a tensile white buffing for crystal polishing and a production process thereof, and belongs to the technical field of polishing skins. The tensile white buffing for crystal polishing comprises a polishing layer, a tensile layer and a substrate layer, and the polishing layer, the tensile layer and the substrate layer are sequentially connected in a composite mode from top to bottom. According to the tensile white buffing for crystal polishing and the production process thereof, the problem that the tensile strength of the white buffing is unstable due to the fact that a hollow-out oxidation film net layer formed by reaction of oxide in existing coated nano aggregated particles and oxygen is not stable enough in structure and prone to breakage or fracture during generation is solved, and the tensile strength of the white buffing is not stable is solved. And in the tensile layer, nano mixed particles are adopted to prepare reinforcing rings and reinforcing ribs, so ...

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14-07-2023 дата публикации

Double-layer composite polishing pad for optical glass and preparation method of double-layer composite polishing pad

Номер: CN116423383A
Принадлежит:

The invention discloses a double-layer composite polishing pad for optical glass and a preparation method of the double-layer composite polishing pad, and belongs to the technical field of polishing pads. The double-layer composite polishing pad for the optical glass comprises a polishing base layer and polishing surface layers, the polishing surface layers are arranged at the upper end and the lower end of the polishing base layer, each polishing surface layer comprises a polishing surface layer body and a polishing grinding block, and the polishing grinding blocks are arranged on the polishing surface layer bodies. According to the double-layer composite polishing pad for the optical glass and the preparation method of the double-layer composite polishing pad, the problems that a polishing area of an existing polishing pad is usually a single face, and the polishing pad is short in service life and poor in use effect are solved, the double-layer composite polishing pad for the optical ...

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29-08-2023 дата публикации

Damping cloth for accurate grinding of blue glass and preparation process of damping cloth

Номер: CN116652850A
Принадлежит:

The invention discloses damping cloth for fine grinding of blue glass and a preparation process of the damping cloth, and belongs to the technical field of damping cloth preparation.The damping cloth comprises a damping cloth base material layer, an adhesive layer and an abrasive layer which are sequentially arranged from top to bottom, and the preparation process comprises the following steps that the surface of the damping cloth base material is coated with polyurethane emulsion, drying is conducted for 30-60 min at the temperature of 100-120 DEG C, and the damping cloth base material is obtained; the preparation method comprises the following steps: preparing an adhesive layer, then adopting an electrostatic sand planting method to implant surface treatment wear-resistant particles on the adhesive layer to obtain a semi-finished product damping cloth, putting the semi-finished product damping cloth in a drying box, pre-drying at 55-60 DEG C for 20-30 minutes, heating to 80-85 DEG C, ...

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23-06-2023 дата публикации

Adsorption pad for electronic display screen and preparation process of adsorption pad

Номер: CN116285754A
Принадлежит:

The invention discloses an adsorption pad for an electronic display screen. The adsorption pad comprises a dustproof film, a porous polyurethane adsorption film, a polyurethane adhesive, a double-sided adhesive layer and release paper which are sequentially arranged from an adsorption end to a fixed end, the porous polyurethane adsorption film is prepared by the following steps: carrying out nucleophilic substitution on diphenyl phosphinyl chloride and diethyl iminodiacetate to obtain an intermediate 1, and reacting the obtained intermediate 1 with ethylenediamine to obtain an intermediate 2; and taking beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride as a raw material, and carrying out amidation condensation reaction on the beta-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl chloride and the two amido groups on the intermediate 2 to obtain the flame-retardant antioxidant. Adding the obtained flame-retardant antioxidant into a polyurethane material preparation process; the obtained ...

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25-07-2023 дата публикации

Wax-free pad for IC (integrated circuit) and preparation process of wax-free pad

Номер: CN116475938A
Принадлежит:

The invention discloses a wax-free pad for an IC (integrated circuit) and a preparation process of the wax-free pad, and belongs to the technical field of wax-free pads. Modified polyurethane particles are fused and coated on the surface of glass fabric, a base material with the thickness of 0.3-0.5 mm is obtained after hot press molding, and the surface, exposed out of the glass fabric, of the base material is subjected to galling treatment to obtain a supporting layer; the supporting layer is spread, the galled face of the supporting layer is coated with the polyurethane prepolymer, an adsorption layer with the thickness ranging from 0.3 mm to 0.6 mm is obtained after reaction curing, and the wax-free pad for the IC is prepared after cutting forming. The heat-conducting filler is mixed into the modified polyurethane particles in the preparation process, so that the heat dissipation effect is favorably improved; the glass fabric grid is beneficial to good contact between the adsorption ...

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