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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 34. Отображено 34.
27-07-2016 дата публикации

무선 통신 시스템에서 위상 보상을 이용한 채널 추정 방법 및 장치

Номер: KR0101643419B1
Автор: 박효열, 조성권, 양하영
Принадлежит: 삼성전자주식회사

... 본 발명의 실시 예에 따른 무선 통신 시스템에서 채널 추정 방법에 대한 것으로서, 본 발명의 방법은 수신 신호에 포함된 파일럿 신호로부터 채널 임펄스 응답을 구하는 과정과, 상기 채널 임펄스 응답에 대해 최대 피크 전력 값을 갖는 타이밍 옵셋을 추정하는 과정과, 상기 추정된 타이밍 옵셋을 이용하여 위상 보상을 수행하고, 상기 보상된 위상이 적용된 채널 추정을 수행하는 과정을 포함을 포함한다.

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12-12-2018 дата публикации

SOLVENTLESS PHOTOCURABLE ORGANIC/INORGANIC HYBRID INSULATION MATERIAL

Номер: KR1020180132366A
Принадлежит:

The present invention comprises: at least 10 wt% of oligosiloxane having a photocurable organic group; at least 10 wt% of an organic monomer or organic oligomer formed in a carbon chain structure and having a photocurable organic group at a side chain and an end; at most 20 wt% of nanoparticles in the form of spherical particles and substituted on the surface by photocurable organic groups; a photoinitiator initiating a photocurable reaction with the photocurable organic groups through light irradiation; 0.1 to 3 wt% of a dispersant having polarity and non-polarity at both ends thereof; 0.1 to 10 wt% of a flow control agent in a liquid phase; 1 to 15 wt% of an adhesion promoter composed of a carbon chain structure or a siloxane structure; and 0.1 to 5 wt% of a defoamer. The viscosity is controlled through the content of the oligosiloxane, the organic monomer or the organic oligomer, and the nanoparticles, and an organic network is formed between the photocurable organic groups thereof through ...

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28-07-2011 дата публикации

HEAT DISSIPATION COATING AGENT AND HEAT-DISSIPATING PLATE INCLUDING SAME

Номер: KR2011090236A1
Принадлежит:

The present invention relates to a heat dissipation coating agent and to a heat-dissipating plate including same, which efficiently dissipate heat from the surface of a heat-dissipating plate of an electric/electronic component. Particularly, the heat dissipation coating agent, which is applied to the surface of a heat-dissipating plate of an electric/electronic component, includes infrared radiation powder and a binder, and the heat-dissipating plate is coated with a heat dissipation layer consisting of the heat dissipation coating agent. Since the heat dissipation coating agent applied to the heat-dissipating plate is highly conductive, heat is emitted from the heat-dissipating plate by conduction as well as convection. In particular, the heat dissipation coating agent, which conducts heat with high conductivity, can be applied to a heat-dissipating plate of a high-power LED light source.

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28-04-2022 дата публикации

CARBON NANOHORN-POLYMER COMPOSITE, AND ELECTRICAL INSULATOR USING SAME

Номер: WO2022086008A1
Принадлежит:

The present invention relates to a carbon nanohorn-polymer composite and an electrical insulator using same. The present invention relates to, as the technical gist, a carbon nanohorn-polymer composite comprising: 95.0 to 99.999 wt% of a polymer substrate consisting of polyolefin; and 0.001 to 5.0 wt% of carbon nanohorn dispersed in the polymer substrate, in which the carbon nanohorn is uniformly dispersed and formed in the polymer substrate at the temperature equal to or higher than the melting point of the polyolefin, and an electrical insulator using same.

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07-07-2015 дата публикации

METHOD AND DEVICE FOR CONTROLLING TRANSMISSION RATE IN WIRELESS COMMUNICATIONS SYSTEM

Номер: KR1020150076763A
Принадлежит:

The present invention relates to a method and a device for controlling the transmission rate in a wireless communications system. According to an embodiment of the present invention, the data transmission rate control device used in the wireless communications system includes a control unit which can update an offset value when the error rate of a channel needs to be corrected by using channel status information including the frame code rate, the occurrence of errors confirmed through a cyclic redundancy check (CRC), and offset values. The control unit also maintains the offset value when the code rate of the channel is at the maximum or minimum and the channel status needs to be prevented to be biased to either side. COPYRIGHT KIPO 2015 (110) Is an updated needed? (BB) No (CC) Yes (DD) End (120) Offset update (130) Maintain an offset value (AA) Start ...

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24-03-2023 дата публикации

유기성 경질 개질제를 포함하는 삼성분계 절연 조성물, 이의 제조방법 및 이를 이용한 절연 소재

Номер: KR20230041346A
Принадлежит:

... 본 발명은 폴리프로필렌 수지와 폴리올레핀 탄성체로 이루어진 열가소성 탄성체에 유기성 경질 개질제를 첨가하여 충격강도가 우수한 삼성분계 절연 소재용 조성물에 관한 것이다. 이러한 본 발명은, 폴리프로필렌 수지와 폴리올레핀 탄성체가 블렌딩되어 폴리프로필렌 수지 매트릭스에 폴리올레핀 탄성체가 분산된 탄성코어를 이루는 구조가 형성되는 과정에 있어서, 유기성 경질 개질제를 동시에 첨가함으로써 얻어지는 삼성분계 절연 조성물을 제공하는 것을 특징으로 한다. 따라서 본 발명은 유기성 경질 개질제가 포함된 삼성분계 절연 조성물에 의하여 상온(25℃)에서부터 저온(-40℃)까지 내충격성이 우수함과 동시에 기계적 강도, 전기 절연성 및 내열성이 우수한 장점이 있다.

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22-05-2017 дата публикации

METHOD FOR DISPERSING ORGANIC SOLVENT OF SILICA SOL USING PHASE SEPARATION

Номер: KR1020170055834A
Автор: LEE, DAE HO, PARK, HYO YUL
Принадлежит:

The present invention relates to a method for dispersing an organic solvent of silica sol using phase separation, which comprises the steps of: preparing an alkoxysilane and a solvent; adding an aqueous mixture to the alkoxysilane and the solvent to synthesize a silica sol; surface-modifying the silica sol to be hydrophobic; adding a hydrophobic solvent or a co-solvent thereto to separate the same into an organic layer containing the hydrophobic solvent or the co-solvent and an aqueous layer containing the aqueous mixture through phase separation, and dispersing the silica sol in the organic layer; and removing the aqueous layer from the phase-separated organic and aqueous layers. Accordingly, the silica sol is surface-treated to be hydrophobic, and a hydrophobic organic solvent or co-solvent is mixed therewith to induce phase separation between an organic solvent and an aqueous solvent, thereby selectively obtaining a phase-separated organic solvent phase. In addition, a separate device ...

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28-03-2017 дата публикации

SHEET INCLUDING HYBRID COATING LAYER WITH EXCELLENT ANTISTATIC FUNCTION

Номер: KR1020170033986A
Принадлежит:

The present invention relates to a sheet including a hybrid coating layer with an excellent antistatic function, and comprising a coating layer formed by coating at least one among an upper part or a lower part of a sheet body with a hybrid coating solution. The hybrid coating solution consists of a solvent, a polyurethane resin, an antiblocking agent including inorganic particles, an antiwear promoter, a slip enhancer, an antifoamer, and an antistatic agent. Therefore, the present invention can obtain the sheet including the hybrid coating layer with an antistatic function, antiblocking property, antiwear property, slip property, transparency, printing property, and improved coating appearance. COPYRIGHT KIPO 2017 ...

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12-03-2018 дата публикации

SILICA-SILOXANE NANOHYBRID COATING MATERIAL AND PRODUCTION METHOD THEREFOR

Номер: KR1020180026259A
Принадлежит:

The present invention relates to a silica-siloxane nanohybrid coating material and to a production method therefor, wherein the method comprises the following steps: preparing a water-dispersed nano silica sol and siloxane; surface-modifying the water-dispersed nano silica sol; and obtaining a coating material by mixing the surface-modified water-dispersed nano silica sol with the siloxane. Accordingly, the process of the method is simplified since a process for removing water, which is a solvent used during the production process, and substituting a separate organic solvent, and a process for mixing an organic binder are not necessary, and an effect may be achieved that the water-dispersed coating material which is in a state of containing water may be applied right away to coating. COPYRIGHT KIPO 2018 (AA) Start (BB) End (S1) Preparation of water-dispersed nanosilica sol and siloxane (S2) Surface modification of water-dispersed nanosilica sol (S3) Obtain a coating material by mixing surface-modified ...

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04-04-2017 дата публикации

INSULATING COATING AGENT HAVING IMPROVED ABRASION RESISTANCE, ADHESIVENESS, HEAT RESISTANCE AND CORROSION RESISTANCE

Номер: KR1020170037227A
Принадлежит:

The present invention relates to an insulating coating agent having improved abrasion resistance, adhesiveness, heat resistance and corrosion resistance, wherein the insulating coating agent comprises: 30-70 parts by weight of an organic resin; 15-45 parts by weight of inorganic particles; 4-8 parts by weight of a dispersing agent for dispersing the organic resin and the inorganic particles; 5-10 parts by weight of an expansion-preventing agent for inhibiting expansion of the insulating coating agent; 0.1-0.2 parts by weight of a surface slip agent for improving slip of the insulating coating agent; 0.3-0.6 parts by weight of an antifoaming agent for inhibiting the formation of air bubbles; 1-2 parts by weight of a deaerator for de-aerating the generated air bubbles; and 2-4 parts by weight of an anti-setting agent for regulating the flow of the insulating coating agent. According to the present invention, in addition to the insulating properties, properties including high abrasion resistance ...

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14-03-2018 дата публикации

NANO COMPOSITE INSULATING MATERIAL WITH SILICA NANO POWDER DISPERSED AND METHOD FOR MANUFACTURING SAME

Номер: KR1020180027003A
Принадлежит:

The present invention relates to a nano composite insulating material with silica nano powder dispersed and a method for manufacturing the same. The method of the present invention comprises the following steps: a step for surface-modifying silica nano powder using a urethane black copolymer; and a step for obtaining a nano composite insulating material by mixing the surface-modified silica nano powder with an epoxy resin, a curing agent, a plasticizer and a promoter. The silica nano powder is manufactured by the above method, and the silica nano powder is put into an epoxy insulating binder resin to overcome operation limitations of the conventional silica micro powder and to enlarge application fields. Moreover, penetrability and adhesive strength of the nano composite insulating material can be enhanced by substituting the conventional silica micro powder with the silica nano powder. COPYRIGHT KIPO 2018 ...

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31-01-2019 дата публикации

SOLVENT-FREE THERMOSETTING ORGANIC/INORGANIC HYBRID INSULATING MATERIAL

Номер: WO2019022545A1
Принадлежит:

The present invention relates to a solvent-free thermosetting organic/inorganic hybrid insulating material comprising: 10 wt% or more of an oligosiloxane having a thermosetting organic group; 10 wt% or more of an organic monomer or an organic oligomer having a carbonated chain structure, and having a thermosetting organic group on the side chains and ends thereof; 20 wt% or less of nanoparticles having a spherical particle form and having a thermosetting organic layer substituted on the surface thereof; 1-15 wt% of a curing accelerator having an organic group capable of covalently bonding by heat treatment; a thermosetting initiator for initiating a thermosetting reaction together with the thermosetting organic group by heat treatment, and a thermosetting agent for proceeding with the thermosetting reaction; 0.01-5 wt% of a thermosetting catalyst to be added so as to accelerate the thermosetting reaction; 0.1-3 wt% of an amphiphilic dispersion stabilizer being polar and nonpolar at both ...

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11-10-2018 дата публикации

SOLVENTLESS-TYPE THERMOSETTING ORGANIC-INORGANIC HYBRID INSULATING MATERIAL

Номер: KR101906815B1

The present invention relates to a solventless-type thermosetting organic/inorganic hybrid insulating material. The solventless-type thermosetting organic/inorganic hybrid insulating material comprises: an oligosiloxane having a thermosetting organic group; an organic monomer or an organic oligomer; nano particles; a curing accelerator; a thermosetting initiator and a thermosetting agent; a thermosetting catalyst; a dispersion stabilizer; a surface energy controlling agent; a liquid flowability regulator; and a defoaming agent. According to the present invention, the thermosetting organic/inorganic hybrid insulating can be adjusted in viscosity in a solventless condition and can have improved properties. COPYRIGHT KIPO 2018 ...

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03-08-2015 дата публикации

HIGH EMISSIVITY CERAMIC HEATER

Номер: KR101541318B1

The present invention relates to a high emissivity ceramic heater, which comprises: a heating element; a lead for providing power to the heating element; and a ceramic body having the heating element and the lead embedded therein. The ceramic body includes 10 to 30 parts by weight of gairome clay, 70 to 90 parts by weight of alumina, 1 to 10 parts by weight of manganese dioxide (MnO_2), 1 to 10 parts by weight of barium fluoride (BaF_2), 1 to 10 parts by weight of calcium carbonate (CaCO_3), and 1 to 10 parts by weight of talc. An emission coating layer is formed on an outer surface of the ceramic heater. The emission coating layer includes, with respect to 100 parts by weight of an inorganic binder, 20 to 30 parts by weight of jade, 50 to 70 parts by weight of silicon carbide, 10 to 20 parts by weight of cordierite, 1 to 3 parts by weight of sericite, and 1 to 5 parts by weight of manganese dioxide which are infrared radiation powder. Accordingly, the ceramic heater is formed by using ...

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05-10-2015 дата публикации

SHEET INCLUDING HYBRID COATING LAYER

Номер: KR101556961B1

The present invention relates to a sheet including a hybrid coating layer, which comprises: a sheet main body; and a coating layer coated with a hybrid coating liquid on the top and bottom part of the sheet main body. The hybrid coating liquid of the present invention contains: a polyurethane resin; an anti-blocking agent comprising inorganic particles; a wear-resistant enhancer; an anti-slip improving agent; a surface leveling agent; and a solvent. Accordingly, it is possible to improve anti-blocking properties, wear-resistancy, slipping properties, transparency, and printabilities by coating the coating layer on the top and bottom part of the sheet main body, and also possible to provide effects of increasing efficiency in a manufacturing process. COPYRIGHT KIPO 2016 ...

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30-05-2016 дата публикации

METHOD AND APPARATUS FOR OFFSET ESTIMATION IN MOBILE COMMUNICATION SYSTEM

Номер: KR0101625244B1
Принадлежит: 삼성전자주식회사

... 본 발명은 수신 장치에서 오프셋을 추정하는 방법에 있어서, 수신 신호로부터 검출된 파일럿 심볼들에 대하여 주파수 오프셋 및 타이밍 오프셋 중 하나를 선택하는 과정과, 상기 선택에 따라 상기 파일럿 심볼들에 대해 상기 주파수 오프셋 및 상기 타이밍 오프셋 중 하나를 추정하는 과정과, 상기 추정된 오프셋을 이용하여 상기 파일럿 심볼들에 대해 오프셋을 보상하는 과정, 및 상기 오프셋 보상된 파일럿 심볼들을 이용하여 추정되지 않은 오프셋을 추정하는 과정을 포함하는 오프셋 추정 방법을 제안함으로써, 정확하게 오프셋을 추정할 수 있고, 그 결과로 우수한 링크 성능을 얻을 수 있다.

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03-02-2022 дата публикации

METHOD FOR PREPARING POLYIMIDE AEROGEL HAVING LOW DIELECTRIC PROPERTIES, HIGH INSULATION, AND HIGH STRENGTH, AND POLYIMIDE AEROGEL PRODUCED THEREFROM

Номер: WO2022025341A1
Принадлежит:

The present invention relates to: a method for producing a polyimide aerogel having low dielectric properties, high insulation, and high strength; and a polyimide aerogel prepared therefrom. The present invention has the technical gist of a method for producing a polyimide aerogel having low dielectric properties, high insulation, and high strength, and a polyimide aerogel prepared therefrom, the method including: a first step of preparing a solvent; a second step of preparing a polyamic acid resin by reacting a diamine-based monomer with an acid anhydride monomer in a solvent; a third step of preparing a polyimide resin solution by imidizing the polyamic acid resin at 150 to 200 ℃; a fourth step of preparing a polyimide wet gel by mixing a crosslinking agent and an acid with the polyimide resin solution; and a fifth step of preparing a polyimide aerogel by replacing the solvent contained in the polyimide wet gel with a main substitution solvent and a minor substitution solvent and then ...

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23-01-2018 дата публикации

HYBRID COATING SHEET COMPRISING SKIN LAYER

Номер: KR1020180007402A
Принадлежит:

The present invention relates to a hybrid coating sheet comprising a skin layer. Specifically, the hybrid coating sheet comprises: a sheet main body which comprises a core layer, and a skin layer designated of at least one of the top and bottom of the core layer; and a coating layer which is formed by coating a hybrid coating solution on at least one of an upper part and a lower part of the sheet main body, wherein the skin layer contains a slip agent and an anti-blocking agent, and the hybrid coating solution contains a solvent, polyurethane resin, an anti-blocking agent containing inorganic particles, an abrasion resistance enhancer, a slip improver, an antifoaming agent, and an antistatic agent. Accordingly, it is possible to improve antistatic function, anti-blocking properties, abrasion resistance, slip properties, transparency, printability, and coating appearance. COPYRIGHT KIPO 2018 ...

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23-03-2017 дата публикации

SHEET INCLUDING HYBRID COATING LAYER HAVING EXCELLENT ANTISTATIC FUNCTION

Номер: WO2017047916A2
Принадлежит:

The present invention relates to a sheet including a hybrid coating layer having an excellent antistatic function, the sheet comprising a coating layer, coated with a hybrid coating liquid, on at least one of the top and bottom of a sheet main body, wherein the hybrid coating liquid consists of a solvent, polyurethane resin, an anti-blocking agent including inorganic particles, an abrasion resistance enhancer, a slip improver, an antifoaming agent and an antistatic agent. Accordingly, it is possible to obtain a sheet including a hybrid coating layer not only having an antistatic function, but also having improved anti-blocking properties, abrasion resistance, slip properties, transparency, printability, and coating appearance.

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19-09-2013 дата публикации

METHOD FOR MANUFACTURING HYBRID PACKAGING MATERIAL

Номер: WO2013137604A1
Принадлежит:

The main technical features of present invention are for a method for manufacturing a hybrid packaging material, comprising: a first step of forming an inorganic nanosol in a colloid phase; a second step of processing the surface of the inorganic nanosol by adding a functional organic metal alkoxide, containing an organic functional group, to the inorganic nanosol of the first step and stirring the mixture; a third step of manufacturing an inorganic nanosol for an organic solvent by substituting the solvent included in the inorganic nanosol of the second step with an organic solvent that is different therefrom; a fourth step of manufacturing an organic/inorganic hybrid material for an inorganic solvent by substituting the organic solvent included in the inorganic nanosol of the third step with a functional organic monomer or a silicon compound, and concentrating the mixture; and a fifth step of further adding a nanoclay dispersed in the solvent or a solvent-free nanoclay to the organic/ ...

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10-05-2018 дата публикации

EPOXY-SILICA NANOHYBRID RESIN WITH IMPROVED INSULATING PROPERTIES, RESIN MANUFACTURING METHOD, AND VOLTAGE STABILIZER FOR EPOXY RESIN

Номер: KR1020180047440A
Принадлежит:

The present invention relates to epoxy-silica nanohybrid resin with improved insulating properties, a resin manufacturing method, and a voltage stabilizer for epoxy resin. The method includes: a step of synthesizing a colloidal nano-silica sol; a step of reforming the surface of silica nanoparticles of the colloidal nano-silica sol; a step of manufacturing an organic solvent dispersion silica sol through the reformed colloidal nano-silica sol; a step of manufacturing a silica nanoparticle dispersion epoxy main substance and a silica nanoparticle dispersion hardener by adding a voltage stabilizer to the organic solvent dispersion silica sol; and a step of manufacturing hybrid resin by mixing the silica nanoparticle dispersion epoxy main substance and the silica nanoparticle dispersion hardener. As such, the present invention is capable of improving insulating properties by adding an aromatic voltage stabilizing agent having low ionization energy and high electron affinity during a procedure ...

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20-04-2016 дата публикации

APPARATUS AND METHOD OF CHANNEL ESTIMATION IN MOBILE COMMUNICATION SYSTEM

Номер: KR0101613837B1
Автор: 박효열, 양하영, 조성권
Принадлежит: 삼성전자주식회사

... 본 발명은 이동 통신 시스템에서 채널을 추정하는 방법 및 그를 수행하는 장치에 관한 것으로, 수신된 파일럿 신호에서 파워가 큰 피크 값과 CINR(Carrier to Interference and Noise Rate)을 추정하는 과정과, 상기 추정된 피크 값과 CINR에 해당하는 위너 필터를 선택하는 과정과, 상기 선택된 위너 필터를 통해 채널 추정을 수행하는 과정을 포함한다. 이러한 과정을 통해 채널 추정 수신 장치는 미리 설정된 다수 개의 위너 필터를 이용하여, 채널 추정 시 복잡도를 줄일 수 있으며, 원하는 출력값에 근접한 채널 추정 성능을 얻을 수 있다. 그리고 채널 추정 수신 장치는 채널의 특성 변화에 따라 적절한 위너 필터를 선택하여, 다양한 통신 환경에 맞는 채널 추정을 수행할 수 있다.

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24-03-2011 дата публикации

COOKER COMPRISING A GRILL COATED WITH AN INFRARED RADIATION LAYER

Номер: KR2011034272A1
Принадлежит:

The present invention relates to a cooker such as a microwave oven, an electric oven, or the like, which cooks food using electricity. More particularly, the key technical features of the present invention relate to a cooker which is coated with an infrared radiation layer, which cooks food using electricity, and the interior of which is provided with a grill heater, wherein an infrared radiation layer is coated on a front surface of the grill heater oriented toward a cooking area of the cooker. Accordingly, the present invention provides a small and lightweight cooker in which the front surface of the grill heater oriented toward the cooking area of the cooker is coated with the infrared radiation layer, and infrared rays are irradiated toward the cooking area, thereby facilitating quick and energy-saving cooking.

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12-02-2016 дата публикации

MANUFACTURING METHOD OF HYBRID MATERIAL WITH DISPERSED INORGANIC PARTICLES THROUGH PULVERIZING INORGANIC PARTICLES AND CONTROLLING PARTICLE SIZES

Номер: KR1020160014969A
Принадлежит:

The technical idea of the present invention relates to a manufacturing method of a hybrid material having dispersed inorganic particles, through pulverizing inorganic particles and controlling particle sizes. The manufacturing method comprises: a step of preparing inorganic particles; a step of primarily, secondarily, and tertiarily pulverizing the inorganic particles by using milling balls, each having different sizes; a step of obtaining the inorganic particles pulverized so as to have different particle sizes; a step of treating the surface of the inorganic particles with organic silane; a step of separating and drying the silane-treated inorganic particles; and a step of manufacturing a hybrid material by mixing the inorganic particles with different sizes. By using the inorganic particles with different particle sizes to have a crystallization structure or a compact structure, which are manufactured by the method as described in the present invention, a hybrid material having high ...

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12-02-2016 дата публикации

METHOD FOR PRODUCING HYBRID COATING MATERIAL WITH HIGH TRANSPARENCY, HEAT RESISTANCE, AND INSULATING PROPERTIES

Номер: KR1020160014971A
Принадлежит:

The present invention relates to a method for producing a hybrid coating material with high transparency, heat resistance, and insulating properties. According to the present invention, the method comprises the following steps: preparing silica nanosol; surface-treating the silica nanosol with silane by using a surface treatment agent containing silane; and producing the hybrid coating material by mixing the silane-surface-treated silica nanosol and oligosiloxane, wherein the silica nanosol can be either water-dispersible silica nanosol or silica nanosol produced from a precursor containing a polar solvent. Therefore, a reaction can be carried out by drying and hardening without a substitution process with an organic solvent and also without involvement of contraction during the reaction. Thus, the hybrid coating material with high filling density, high transparency, heat resistance, and insulating properties can be obtained. COPYRIGHT KIPO 2016 (AA) Start (BB) End (S1) Preparing silica ...

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30-04-2020 дата публикации

POLYIMIDE AEROGEL HAVING CONTROLLED PARTICLE SIZE AND PORE STRUCTURE, AND METHOD FOR PRODUCING SAME

Номер: WO2020085830A1
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The present invention pertains to a polyimide aerogel having a controlled particle size and pore structure, and a method for producing same. More specifically, the present invention pertains to a polyimide aerogel in which not only can the particle size of a polyimide resin be controlled, but the pore structure can also be controlled through an organic solvent mixture, and to a method for producing the polyimide aerogel. The present invention can be achieved through: a first step for preparing a solvent; a second step for synthesizing a polyamic acid resin by reacting a diamine-based monomer and an acid anhydride monomer in the solvent; a third step for forming a polyimide resin through the imidization of the polyamic acid resin by subjecting the polyamic acid resin to a high-temperature reaction at 150-200°C; a fourth step for forming a polyimide wet gel by crosslinking the polyimide resin; and a fifth step for forming a polyimide aerogel by replacing the solvent contained in the polyimide ...

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18-04-2017 дата публикации

INSULATING COATING AGENT HAVING IMPROVED LUBRICITY

Номер: KR1020170042062A
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The present invention relates to an insulating coating agent having improved lubricity, comprising: 30-80 parts by weight of an organic resin containing a fluororesin; 15-45 parts by weight of inorganic particles; 4-8 parts by weight of a dispersion for dispersing the organic resin and the inorganic particles; 5-10 parts by weight of an anti-blister agent for preventing the insulating coating agent from blistering; 0.1-0.2 parts by weight of a surface slip agent for improving the slip of the insulating coating agent; 0.3-0.6 parts by weight of an antifoaming agent for preventing the formation of air bubbles; 1-2 parts by weight of a defoaming agent for removing the generated air bubbles; and 2-4 parts by weight of an anti-setting agent for controlling the flow of the insulating coating agent. According to the present invention, mixing the fluororesin in the organic resin having insulating properties and high mechanical properties increases the characteristic lubricity of the fluororesin ...

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31-05-2018 дата публикации

SIGNAL TRANSMISSION METHOD AND DEVICE USING BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM

Номер: WO2018097411A1
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Disclosed are a communication technique for merging, with IoT technology, a 5G communication system for supporting a data transmission rate higher than that of a 4G system, and a system therefor. The disclosure can be applied to an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail, security and safety-related services, and the like) on the basis of 5G communication technology and IoT-related technology. According to an embodiment of the present invention, a method by which a base station transmits a signal in a wireless communication system comprises the steps of: transmitting, to a terminal through at least one beam, at least one beam index including information on beam direction; receiving, from the terminal, a preferred beam index determined by the terminal; determining a channel matrix between the base station and the terminal on the basis of the preferred beam index; and allowing the base station ...

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08-03-2018 дата публикации

SILICA-SILOXANE NANOHYBRID COATING MATERIAL AND PRODUCTION METHOD THEREFOR

Номер: WO2018043987A1
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The present invention relates to a silica-siloxane nanohybrid coating material and a production method therefor, the method comprising the steps of: preparing a water-dispersed nano silica sol and siloxane; surface-modifying the water-dispersed nano silica sol; and obtaining a coating material by mixing the surface-modified water-dispersed nano silica sol with the siloxane. Accordingly, the process is simplified since a process for removing water, which is a solvent used during the production process, and then substituting a separate organic solvent, and a process for mixing an organic binder are not undergone, and an effect may be achieved whereby a water-dispersed coating material which is in a state of containing water may be applied right away to coating.

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07-06-2018 дата публикации

APPARATUS AND METHOD FOR TRANSMITTING SIGNAL USING BEAMFORMING IN WIRELESS COMMUNICATION SYSTEM

Номер: KR1020180060882A
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The present disclosure relates to a communication technique for fusing a 5G communication system with IoT technology to support a higher data rate than a 4G communication system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, security and safety related services, etc.) based on 5G communication technology and IoT-related technology. The present invention provides a method of forming an analog beam pattern capable of minimizing an interference in consideration of an interference direction and a method capable of estimating a channel between a base station and a terminal even in an environment where pilot symbols for channel measurement purpose can not be used as well as removing an interference signal at a digital stage. A method of transmitting a signal of a base station in a wireless communication system according to an ...

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21-06-2017 дата публикации

CERAMIC PEDESTAL OF SPINNING WHEEL FOR CERAMIC MOLDING AND CERAMIC DRYING DEVICE USING SAME

Номер: KR1020170069581A
Автор: PARK, HYU YUL
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The present invention relates to a ceramic pedestal of a spinning wheel for ceramic molding and a ceramic drying device using the same, which is seated on a rotary plate of the spinning wheel for the ceramic molding and supports the pottery to be rotated during the drying process, so that drying quality can be improved. A ceramic pedestal of a spinning wheel for ceramic molding according to the present invention provides a spinning wheel device including a rotary plate rotated by an attractive force or an electric motor for ceramic molding, which comprises: a support plate which is seated on the rotary plate and supports clay for ceramic molding; and a plurality of protruding pieces protruding downward from a lower portion of the support plate and arranged to be spaced apart from each other along a circumferential direction. The protruding pieces have an inner surface abutting against the outer peripheral surface of the rotary plate and is fastened so that the support plate can rotate together ...

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26-06-2015 дата публикации

high barrier and optically transparent hybrid packaging films

Номер: KR0101530987B1
Автор: 강동준, 박효열, 안명상
Принадлежит: 한국전기연구원

... 본 발명은 고차단성 투명 하이브리드 패키징 막에 관한 것으로, 기판과; 상기 기판 상면에 형성되고, 다층 코팅막을 형성함에 있어 층간 공유결합을 유도하기 위하여 유기 단량체, 유기 수지, 올리고 실록산, 실리카-유기 단량체 하이브리드소재, 실리카-유기 수지 하이브리드소재, 실리카-올리고실록산 하이브리드소재 중 하나로 형성되고, 상기 소재들이 함유하고 있는 기능기는 아크릴기, 메타크릴기, 알릴기, 알킬기, 케톤기, 방향족기, 에스테르기, 니트로기, 하이드록시기, 사이클로부텐기, 알키드기, 우레탄기, 머캡토기, 니트릴기, 비닐기, 아민기 및 에폭시, 아세틸 아세톤기 작용기 중 하나 이상을 지니는 기능기를 포함하는 소재로 형성된 제1코팅층과; 상기 제1코팅층 상면에 형성되고, 판상 나노졸 코팅소재로써, 유기금속알콕사이드가 처리된 판상 나노 클레이를 포함하는 판상 무기 나노졸 소재, 유기금속알콕사이드가 처리된 판상 그레핀 및 그레핀 옥사이드 소재, 올리고실록산과 혼합된 판상 나노 클레이를 포함하는 판상 무기 나노졸 소재, 올리고실록산과 혼합된 판상 그레핀 및 그레핀 옥사이드 소재, 유기 단량체 및 유기 수지와 혼합된 판상 나노 클레이를 포함하는 판상 무기 나노졸 소재, 판상 그레핀 및 그레핀 옥사이드 소재 중 하나 이상으로 형성되고, 상기 소재들이 함유하고 있는 기능기는 아크릴기, 메타크릴기, 알릴기, 알킬기, 케톤기, 방향족기, 에스테르기, 니트로기, 하이드록시기, 사이클로부텐기, 알키드기, 우레탄기, 머캡토기, 니트릴기, 비닐기, 아민기 및 에폭시, 아세틸 아세톤기 작용기 중 하나 이상을 지니는 기능기를 포함하는 소재로 형성된 제2코팅층과; 상기 제1코팅층을 이루는 소재중 하나로 형성되어 상기 제2코팅층 상면에 형성된 제3코팅층;을 포함하여 형성되는 고차단성 투명 하이브리드 패키징 막을 기술적 요지로 한다. 이에 따라, 판상형태의 입자를 분산시켜 형성된 판상 나노졸을 이용한 패키징막 사이에 상기 패키징막과의 공유결합을 유도할 수 있는 유기 화합물, 실리콘 화합물, ...

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23-03-2017 дата публикации

SHEET INCLUDING HYBRID COATING LAYER HAVING EXCELLENT ANTISTATIC FUNCTION

Номер: WO2017047916A3
Принадлежит:

The present invention relates to a sheet including a hybrid coating layer having an excellent antistatic function, the sheet comprising a coating layer, coated with a hybrid coating liquid, on at least one of the top and bottom of a sheet main body, wherein the hybrid coating liquid consists of a solvent, polyurethane resin, an anti-blocking agent including inorganic particles, an abrasion resistance enhancer, a slip improver, an antifoaming agent and an antistatic agent. Accordingly, it is possible to obtain a sheet including a hybrid coating layer not only having an antistatic function, but also having improved anti-blocking properties, abrasion resistance, slip properties, transparency, printability, and coating appearance.

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24-03-2011 дата публикации

COOKER COATED WITH AN INFRARED RADIATION LAYER

Номер: KR2011034271A1
Принадлежит:

The present invention relates to a cooker such as a microwave oven, an electric oven, or the like, which cooks food using electricity. More particularly, the key technical features of the present invention relate to a cooker comprising: a heating plate; a heater bonded to the heating plate; and an infrared radiation layer coated on a front surface of the heating plate. Accordingly, the present invention provides a small and lightweight cooker in which the heating plate bonded to the heater is coated with the infrared radiation layer, and the heating plate coated with the infrared radiation layer is formed into a flat shape to enable the uniform and quick radiation of infrared rays, thus facilitating quick cooking.

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