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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 24. Отображено 24.
30-01-2019 дата публикации

촉매 연속첨가를 이용해 입경제어와 고속합성이 가능한 실리카졸 제조방법 및 이를 통해 제조된 실리카졸

Номер: KR0101916905B1
Автор: 강동필, 이나경
Принадлежит: 한국전기연구원

... 본 발명은, 촉매 연속첨가를 이용해 입경제어와 고속합성이 가능한 실리카졸 제조방법 및 이를 통해 제조된 실리카졸에 있어서, 전구체실란이 알코올계 유기용매에 용해된 전구체실란 용액 및 염기성 촉매와 물이 혼합된 촉매수 용액을 각각 준비하는 단계와; 상기 전구체실란 용액과 상기 촉매수 용액을 혼합하여 가수분해 및 축합반응을 통해 하이드록시기(-OH)가 1 내지 3개 형성된 친수성 실란올(silanol) 중간체를 형성하는 단계와; 상기 실란올 중간체에 촉매수 혼합용액을 연속적으로 첨가하여 실리카졸을 형성하는 단계와; 상기 실리카졸을 유기실란을 통해 실란처리하는 단계를 포함하는 것을 기술적 요지로 한다. 이에 의해 염기성 촉매 하에서 전구체실란과 물의 반응을 통해 알코올과 수용액에 용해도가 높은 실란올 중간체를 형성하고, 실란올 중간체에 염기성 촉매수를 추가로 연속첨가하여 실리카졸을 20nm 이하로 입경을 제어하면서 고속으로 합성할 수 있다.

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Номер записи: 1
25-02-2016 дата публикации

CERAMIC SOL NANOHYBRID MATERIAL USING MODIFIED POLYAMIDE-IMIDE CONTAINING HYDROXYL OR ETHER GROUP ON END THEREOF AND METHOD FOR MANUFACTURING SAME

Номер: KR101597683B1
Автор: PARK, JIN HEE, KANG, DONG PIL, LEE, DAE HO
Принадлежит: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

The present invention relates to a ceramic sol nanohybrid material using modified polyamide-imide containing a hydroxyl or ether group on the end thereof and a method for manufacturing the same and, more specifically, to a ceramic sol nanohybrid material using polyamide-imide, which is modified to increase the ratio of an amide group, an urethane group, or an urea group to an imide group in a polyamide-imide molecule or to have a hydroxyl or ether group on the end thereof so as to enable the nanohybrid material to have excellent material properties such as dispersibility, adhesive strength, tensile strength, etc. even if the nanohybrid material has a high ceramic sol content; and to a method for manufacturing the ceramic sol nanohybrid material. Technical points of the present invention are: a modified polyamide-imide containing a hydroxyl or ether group on the end thereof manufactured by forming a modified polyamide-imide containing a hydroxyl or ether group on the end thereof by adding ...

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Номер записи: 2
02-05-2018 дата публикации

IMIDE-BASED POLYMER COLLOID DISPERSION FOR ELECTRODEPOSITION COATING AND PREPARATION METHOD THEREOF

Номер: KR1020180044128A
Автор: LEE, DAE HO, BAE, YU RI, KANG, DONG PIL, HAN, SE WON
Принадлежит:

The present invention relates to an imide-based polymer colloid dispersion for electrodeposition coating and a preparation method thereof. The preparation method of the present invention comprises the steps of: preparing a first oligomer amic acid and a second oligomer amic acid having amine and acid anhydride formed in both terminal ends thereof; producing a polyamic acid having a molecular weight controlled by controlling a molar ratio of the first oligomer amic acid and the second oligomer amic acid; neutralizing carboxylic acid formed in the polyamic acid by using a basic neutralizing agent comprised of a polar amine and a low polarity amine; and adding water and an alcohol solvent to the neutralized polyamic acid to prepare a polymer colloid dispersion. Therefore, the preparation method of the present invention can obtain effects that molecular weight of a polymer is controlled by mixing low molecular weight oligomers, particle size and dispersion stability are adjusted by a polarity-adjusted ...

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Номер записи: 3
25-06-2015 дата публикации

Method for manufacturing highly dispersed epoxy-silica nano hybrid resin and epoxy-inorganic nano/micro-hybrid resin using sol-gel technique, and their crosslinked products

Номер: KR0101530998B1
Автор: 이대호, 강동필, 이주영
Принадлежит: 한국전기연구원

... 본 발명은 에폭시 수지에 무기물 나노/마이크로 입자를 혼합하는데 있어 별도의 기계적 분산장치 없이 졸겔 기법을 이용하여 입자 뭉침없이 고분산된 에폭시-무기 나노/마이크로 입자 하이브리드 수지의 제조방법과, 고분산 에폭시-무기 나노/마이크로 입자 하이브리드 수지의 제조방법에 관한 것이다. 본 발명의 에폭시-무기 나노/마이크로 입자 하이브리드 수지의 제조방법은 4가 알콕시 실란으로부터 고온 반응조건에서 제조된 고순도 나노 실리카 졸의 표면을 개질한 유기용매 분산 실리카 졸을 에폭시 주제와 경화제에 각각 혼합한 후 촉매 부산물과 용매를 제거하여, 실리카 나노입자가 분산된 에폭시 주제와, 실리카 나노입자가 분산된 경화제를 각각 준비하고, 마이크로 무기물 입자를 유기용매에 분산후 표면개질하여 유기 용매에 분산된 마이크로 무기물 입자 분산액을 준비하는 단계; 상기 실리카 나노입자가 분산된 에폭시 주제와 상기 실리카 나노입자가 분산된 경화제 각각에 상기 마이크로 무기물 입자 분산액을 투입한 후 유기 용매를 각각 제거하여, 에폭시-무기입자 나노/마이크로 하이브리드 주제 및 에폭시-무기입자 나노/마이크로 하이브리드 경화제를 각각 제조하는 단계; 및 이들을 혼합 경화시켜 에폭시-무기 나노/마이크로 입자 하이브리드 수지를 제조하는 단계;를 포함한다.

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Номер записи: 4
23-03-2017 дата публикации

QUADRILATERAL COIL HAVING HIGH CERAMIC CONTENT MODIFIED PAI INSULATING VARNISH COATED THEREON AS MULTILAYER STRUCTURE, AND METHOD FOR MANUFACTURING SAME

Номер: WO2017048070A1
Автор: KANG, Dong-pil, PARK, Jin-hee, LEE, Dae-ho, HAN, Se-won
Принадлежит:

The present invention relates to a quadrilateral coil having coated thereon as a multilayer structure, a modified PAI insulating varnish having a high ceramic content, and to a method for manufacturing same. The present invention relates to a quadrilateral coil composed of a multilayer structure comprising: a primer layer including a modified polyamideimide; a main insulating layer formed on the surface of the primer layer as a mixture of a polyamideimide, which includes a relatively large number of amide groups or a urethane group, and a ceramic in a sol state; and a top coating layer, which is formed on the main insulating layer and includes polydimethylsiloxane-polyamideimide, and to a method for manufacturing the same. According to the present invention, an insulating varnish forming each layer has a high ceramic content, and in spite of being a quadrilateral coil, the present invention has the effect of satisfying properties such as adhesiveness, crack resistance, high thermal conductivity ...

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Номер записи: 5
04-04-2018 дата публикации

CROSSLINKABLE PAI/CERAMIC SOL NANOHYBRID INSULATING VARNISH MATERIAL AND PREPARATION METHOD THEREOF

Номер: KR1020180033967A
Автор: KANG, DONG PIL, JEON, JAE HONG, LEE, DAE HO, HAN, SE WON
Принадлежит:

The present invention relates to a crosslinkable polyamideimide (PAI)/ceramic sol nanohybrid insulating varnish material and a preparation method thereof. More specifically, the present invention relates to the PAI/ceramic sol nanohybrid insulating varnish material and the preparation method thereof, wherein the PAI/ceramic sol nanohybrid insulating varnish material is prescribed as a latent curing agent after synthesizing a modified PAI of which an isocyanate group of the terminal is blocked so that the crosslinkable PAI/ceramic sol nanohybrid insulating varnish material has excellent surface lubricating properties and self-bonding properties while satisfying adhesive force, crack resistance, high thermal conductivity and high insulating properties even in case of bending/twisting deformation after the PAI/ceramic sol nanohybrid insulating varnish material is coated on the surface of a metal conductor. The preparation method of the present invention comprises: a first step of synthesizing ...

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Номер записи: 6
04-10-2018 дата публикации

POLYIMIDE/CERAMIC SOL NANOHYBRID FILM MATERIAL AND METHOD OF MANUFACTURING SAME

Номер: KR101892449B1
Автор: KANG DONG PIL, JEON JAE HONG
Принадлежит: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

The present invention relates to a polyimide/ceramic sol nanohybrid film material and a method of manufacturing the same. The method comprises the steps of: synthesizing a bi-reactive structure organic material capable of making a reaction with polyamic acid and reactive silane, respectively; synthesizing a chain silane by using the bi-reactive structure organic material and the reactive silane; making the chain silane reacted on a surface of the ceramic sol surface to graft the same; mixing the ceramic sol grafted with the chain silane with the polyamic acid to form a hybrid varnish solution; casting and drying the varnish solution to form a film, making the ceramic sol reacted with the polyamic acid through heat treatment, and proceeding imidization of the polyamic acid so as to form a polyimide/ceramic sol nanohybrid film material. Accordingly, a surface of the colloidal ceramic sol is grafted with a chain organosilane, and then mixed with the polyamic acid to form a coating membrane ...

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Номер записи: 7
24-03-2017 дата публикации

RECTANGULAR COIL COATED WITH MODIFIED PAI INSULATION VARNISH HAVING HIGH CERAMIC CONTENT IN MULTI-LAYERED STRUCTURE AND METHOD FOR MANUFACTURING SAME

Номер: KR1020170033242A
Автор: KANG, DONG PIL, PARK, JIN HEE, LEE, DAE HO, HAN, SE WON
Принадлежит:

The present invention relates to a rectangular coil coated with a modified PAI insulation varnish having a high ceramic content in a multi-layered structure and a method for manufacturing the same. The rectangular coil having a multi-layered structure according to the present invention comprises: a primer layer including modified polyamideimide; a main insulation layer formed on the surface of the primer layer and made of a mixture of modified polyamideimide having a relatively large number of amide groups or urethane groups and ceramic in a sol state; and a top coating layer formed on the surface of the main insulation layer and including polydimethylsiloxane-polyamideimide. According to the rectangular coil of the present invention, an insulation varnish forming each layer includes a high ceramic content. The rectangular coil of the present invention can satisfy characteristics such as adhesion, crack resistance, high thermal conductivity, high lubricity, abrasion resistance, and high ...

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Номер записи: 8
03-08-2015 дата публикации

HYBRID THIN FILM USING SILICA-ZIRCONIA FUSED CERAMIC SOL AND MANUFACTURING METHOD THEREOF

Номер: KR1020150088364A
Автор: KANG, DOMG JUN, KANG, DONG PIL
Принадлежит:

The present invention relates to a hybrid thin film using a silica-zirconia fused ceramic sol and a manufacturing method thereof and, more specifically, to a manufacturing method of a hybrid thin film using a silica-zirconia fused ceramic sol, which comprises; a first step for manufacturing a silica nanosol; a second step for treating the surface of the silica nanosol; a third step for concentrating or substituting a solvent contained in the silica nanosol for an organic solvent to form the silica nanosol; a fourth step for manufacturing zirconia nanosol; a fifth step for treating the surface of the zirconia nanosol; a sixth step for concentrating or substituting a solvent contained in the zirconia nanosol for an organic solvent to form the zirconia nanosol; a seventh step for fusing the silica nanosol formed through the third step and the zirconia nanosol formed through the sixth step; an eighth step for manufacturing a silica-zirconia nanosol hybrid coating solution; and a ninth step ...

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Номер записи: 9
08-07-2015 дата публикации

SUPERHYDROPHOBIC MOLD MANUFACTURED BY LITHOGRAPHY AND ANODIC OXIDATION AND SUPERHYDROPHOBIC MATERIAL MANUFACTURED THEREBY

Номер: KR1020150078976A
Автор: JEONG, DAE YEONG, BALASANKAR ATHINARAYANAN, LEE, DAE HO, KANG, DONG PIL
Принадлежит:

The present invention relates to a superhydrophobic mold manufactured by lithography and anodic oxidation and a superhydrophobic material manufactured thereby. The superhydrophobic mold manufactured by lithography and anodic oxidation is formed to simultaneously have an unevenly microstructured pattern and the nanostructured pattern. The superhydrophobic material manufactured by a hydrophobic mold coats a polymer resin on the superhydrophobic mold and forming a film having a pillar structure. Moreover, the superhydrophobic material transfers the unevenly microstructured pattern and the nanostructured pattern to a polymer to form the superhydrophobic surface. Therefore, the present invention is capable of mass production having economic efficiency of the material wherein a surface structure of the mold has the superhydrophobic surface engraved on the surface of a hydrophobic molded body. COPYRIGHT KIPO 2015 ...

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Номер записи: 10
02-04-2018 дата публикации

ORGANIC-INORGANIC NANOHYBRID COATING AGENT COMPRISING SILICA NANOPARTICLES SURFACE-MODIFIED BY SILICONE-MODIFIED OLIGOMER, ORGANIC-INORGANIC NANOHYBRID RESIN COMPRISING SILICA NANOPARTICLES SURFACE-MODIFIED BY SILICONE-MODIFIED OLIGOMER, AND MANUFACTURING METHODS THEREOF

Номер: KR1020180032822A
Автор: LEE, DAE HO, KANG, DONG PIL, HAN, SE WON
Принадлежит:

The present invention relates to an organic-inorganic nanohybrid coating agent comprising silica nanoparticles surface-modified by a silicone-modified oligomer, an organic-inorganic nanohybrid resin comprising silica nanoparticles surface-modified by the silicone-modified oligomer, and manufacturing methods thereof. The manufacturing method of the organic-inorganic nanohybrid coating agent comprising the silica nanoparticles surface-modified by the silicone-modified oligomer of the present invention comprises the steps of: preparing the silicone-modified oligomer including a nitrogen element; protecting one end of the silicone-modified oligomer by using a protective group; mixing surface-treated silica nanoparticles with the silicone-modified oligomer to obtain the silica nanoparticles surface-modified by the silicone-modified oligomer; and mixing the silica nanoparticles surface-modified by the silicone-modified oligomer with a polymer including nitrogen element, wherein the silicone-modified ...

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Номер записи: 11
08-02-2017 дата публикации

폴리디메틸실록산-폴리아미드이미드계 공중합체를 이용한 세라믹졸 나노하이브리드 소재 및 이의 제조방법

Номер: KR0101704593B1
Автор: 박진희, 강동필, 이대호, 전제홍, 한세원
Принадлежит: 한국전기연구원

... 본 발명은 폴리디메틸실록산-폴리아미드이미드계 공중합체를 이용한 세라믹졸 나노하이브리드 소재 및 이의 제조방법에 관한 것으로, 더욱 상세하게는 반응성이 높은 이소시안기를 말단에 포함하는 폴리아미드이미드와 이와 반응할 수 있는 폴리디메틸실록산을 이용함으로써, 윤활성, 유연성, 발수성, 내구성, 내열성 및 내마모성이 우수한 폴리디메틸실록산-폴리아미드이미드계 공중합체를 이용한 세라믹졸 나노하이브리드 소재 및 이의 제조방법에 관한 것이다.이러한 본 발명은, 디이소시아네이트 화합물과 산무수물 화합물을 중합하여 사슬의 말단 중 일부에 이소시안기를 가지는 폴리아미드이미드를 합성하는 제1단계; 이소시안기를 가지는 폴리아미드이미드 사슬 중 일부에 수산기 또는 에테르기가 캡핑(capping)되도록, 폴리아미드이미드에 글리콜에테르류 및 알코올류 중 어느 하나 이상을 첨가하는 제2단계; 글리콜에테르류 및 알코올류 중 어느 하나 이상이 첨가된 폴리아미드이미드에 폴리디메틸실록산(PDMS)을 반응시켜 폴리디메틸실록산-폴리아미드이미드계 공중합체를 합성하는 제3단계; 폴리디메틸실록산-폴리아미드이미드계 공중합체에 세라믹졸을 혼합하여 세라믹졸 나노하이브리드 소재를 제조하는 제4단계;를 포함하되, 제3단계에서의 폴리디메틸실록산(PDMS)은 양 말단에 히드록시기, 액시드기, 아민기, 언하이드라이드기, 에폭시기 및 티올기를 포함하는 반응성 그룹 중 어느 하나 이상을 가져, 폴리아미드이미드 사슬의 이소시안기와 반응하는 것을 특징으로 하는 폴리디메틸실록산-폴리아미드이미드계 공중합체를 이용한 세라믹졸 나노하이브리드 소재 및 이의 제조방법을 기술적 요지로 한다.

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Номер записи: 12
08-05-2015 дата публикации

COATING AGENT COMPOSITION FOR PREVENTING ICE AND SNOW FROM ATTACHING AND MANUFACTURING METHOD THEREOF

Номер: KR1020150049976A
Автор: HAN, SE WON, JEONG, JIN, KANG, DONG PIL, LEE, DAE HO
Принадлежит:

The present invention relates to a coating agent composition for preventing ice and snow from attaching and a manufacturing method thereof comprising a first step of adding colloidal silica to n-methyl pyrrolidone (NMP) which is a solvent and agitating the same, thereby forming a first synthesis sol; a second step of mixing the first synthesis sol with the NMP which is the solvent and a functional alkoxy silane having an organic functional group, agitating the same and accordingly reforming the surface of the colloidal silica, thereby forming a second synthesis sol; and a third step of adding at least one silane among perfluorooctyltridethoxy silane and octadecyltrichloro silane which are active silane to the second synthesis and agitating the same, forming a coating agent composition. COPYRIGHT KIPO 2015 (AA) Colloidal silica (CS) (BB,KK,FF) Agitating (CC) Room temperature for 20 minutes (DD) First synthesis sol (EE) Room temperature for 24 hours (GG) Decompression (HH,II) Second synthesis ...

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Номер записи: 13
21-12-2016 дата публикации

CERAMIC SOL NANOHYBRID MATERIAL USING POLYDIMETHYLSILOXANE-POLYAMIDEIMIDE COPOLYMER AND MANUFACTURING METHOD THEREOF

Номер: KR1020160146250A
Автор: PARK, JIN HEE, KANG, DONG PIL, LEE, DAE HO, JEON, JAE HONG, HAN, SE WON
Принадлежит:

The present invention relates to a ceramic sol nanohybrid material using a polydimethylsiloxane-polyamideimide copolymer and a manufacturing method thereof and, more specifically, to a ceramic sol nanohybrid material using a polydimethylsiloxane-polyamideimide copolymer and a manufacturing method thereof, wherein the ceramic sol nanohybrid material has excellent lubricity, flexibility, water repellency, durability, heat resistance and abrasion resistance by using polydimethylsiloxane (PDMS) capable of reacting with polyamideimide including a highly reactive isocyanate group at a terminus and is formed by mixing: a ceramic sol; and a polydimethylsiloxane-polyamideimide copolymer formed by binding PDMS to the isocyanate group of the polyamideimide, wherein a hydroxyl or ether group is capped in a part of a chain of the isocyanate group inside the polyamideimide. COPYRIGHT KIPO 2016 ...

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Номер записи: 14
14-03-2019 дата публикации

METHOD FOR MANUFACTURING SOL-GEL SILICA PARTICLES USING ALCOHOL AMINE CATALYST AND METHOD FOR MANUFACTURING COATING SUBSTRATE COATED WITH SILICA PARTICLES

Номер: WO2019050163A1
Автор: LEE, Dae Ho, SUNG, Joo Yeon, KANG, Dong Pil, HAN, Se Won
Принадлежит:

The technical subject of the present invention is that in a method for manufacturing sol-gel silica particles using an alcohol amine catalyst and a method for manufacturing a coating substrate coated with silica particles, the former method comprises the steps of: preparing a silica precursor solution, in which a silica precursor is mixed with an organic solvent, and an alcohol amine catalyst solution, in which an alcohol amine catalyst is mixed with water; and mixing the silica precursor solution and the alcohol amine catalyst solution to prepare a silica sol, wherein the alcohol amine catalyst is a basic catalyst comprising a hydroxyl group (-OH) at an end thereof. Therefore, silica particles can be prepared through a sol-gel reaction using an alcohol amine catalyst having excellent long-term pH stability, and a high-transmission and anti-reflection coating substrate can be obtained by coating the manufactured silica particles on a substrate.

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Номер записи: 15
23-03-2017 дата публикации

MICRO/NANO HYBRID MATERIAL USING POLYDIMETHYLSILOXANE-POLYAMIDEIMIDE TRI-BLOCK COPOLYMER AND METHOD FOR PREPARING SAME

Номер: KR1020170032726A
Автор: PARK, JIN HEE, SEO, YOUNG SOO, KANG, DONG PIL, LEE, DAE HO, JEONG, JIN, HAN, SE WON, HA, SEUNG HUN
Принадлежит:

The present invention relates to a micro/nano hybrid material using a polydimethylsiloxane-polyamideimide tri-block copolymer and a method for preparing the same. More particularly, the present invention relates to a micro/nano hybrid material using a polyamideimide-polydimethylsiloxane-polyamideimide tri-block copolymer having excellent high lubrication property, self-fusion property at a relatively low temperature and high heat conductivity, obtained by using a polydimethylsiloxane capable of reacting with the reactive terminal of a polyamideimide to obtain a polyamideimide-polydimethylsiloxane-polyamideimide (PAI-PDMS-PAI) tri-block copolymer. The present invention also relates to a method for preparing the same. The micro/nano hybrid material comprises: a polyamideimide-polydimethylsiloxane-polyamideimide (PAI-PDMS-PAI) tri-block copolymer comprising a polydimethylsiloxane both terminals of which are polymerized with a polyamideimide having an isocyanate group at either terminal thereof ...

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Номер записи: 16
06-03-2017 дата публикации

HIGH-EFFICIENCY SOLAR ABSORBER THIN FILM AND METHOD FOR MANUFACTURING SAME BY USING WET PROCESS

Номер: KR1020170023527A
Автор: LEE, DAE HO, KANG, DONG PIL, BAE, YU RI
Принадлежит:

The present invention relates to a high-efficiency solar absorber thin film and a method for manufacturing the same by using a wet process. The method for manufacturing a high-efficiency solar absorber thin film comprises the steps of: preparing a metal colloid solution and a ceramic colloid solution, respectively; coating a substrate to be coated with the metal colloid solution and the ceramic colloid solution; and thermally drying the metal colloid solution and the ceramic colloid solution on the substrate. Accordingly, the method of the present invention can coat the substrate with the metal colloid solution and the ceramic colloid solution through a simple and economical wet coating method. In addition, the method of the present invention can simply control solar absorptivity and thermal emission by adjusting the size, type, particle ratio, and thickness of nanoparticles, thereby obtaining the high-efficiency solar absorber thin film with high absorptivity and low radiation. COPYRIGHT ...

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Номер записи: 17
07-03-2016 дата публикации

METHOD FOR ADJUSTING SIZES OF SOL-GEL SILICA PARTICLES USING ORGANIC SOLVENT AND SILICA SOL HAVING PARTICLE SIZES ADJUSTED THROUGH SAME

Номер: KR1020160024455A
Автор: LEE, DAE HO, KANG, DONG PIL, HAN, SE WON, KIM, JONG UK
Принадлежит:

The present invention relates to a method for adjusting sizes of a sol-gel silica particles using an organic solvent and silica sol with particle sizes adjusted through the same. More particularly, the method of the present invention comprises the steps of: adjusting polarity of a mixed solvent by mixing at least two organic solvents; mixing a silane mixture prepared by adding alkoxysilane to the mixed solvent; and synthesizing silica sol by adding a water-based mixture to the silane mixture. In the present invention, particle sizes of silica nanoparticles can be adjusted by adjusting polarity of an organic solvent and, particularly, of a non-polar organic solvent, and the solubility of alkoxysilane and a catalyst can be enhanced by including a non-alcohol-based organic solvent. COPYRIGHT KIPO 2016 (AA) Start (BB) End (S1) Adjusting a polarity of a mixed solvent (S2) Stirring a silane mixture (S3) Synthesizing silica sol ...

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Номер записи: 18
26-04-2018 дата публикации

IMIDE-BASED POLYMER COLLOIDAL DISPERSION FOR ELECTRODEPOSITION COATING AND METHOD FOR PRODUCING SAME

Номер: WO2018074738A1
Автор: LEE, Dae-ho, BAE, Yu-ri, KANG, Dong-pil, HAN, Se-won
Принадлежит:

The present invention relates to an imide-based polymer colloidal dispersion for electrodeposition coating and a method for producing the same, the method comprising the steps of: preparing a first oligomeric amic acid and a second oligomeric amic acid, each acid having an amine and an acid anhydride at the respective terminals thereof; producing a polyamic acid having a controlled molecular weight through controlling the molar ratio of the first oligomeric amic acid and the second oligomeric amic acid; neutralizing the carboxylic acid formed in the polyamic acid by using a basic neutralizing agent comprising a polar amine and a lower polar amine; and adding water and an alcohol solvent to the neutralized polyamic acid to produce a polymer colloidal dispersion. Thus, the present invention can have the benefits of controlling the molecular weight of the polymer by mixing with the low molecular weight oligomer, controlling the size and dispersion stability of particles by means of a neutralizing ...

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Номер записи: 19
22-12-2015 дата публикации

Hybrid thin films using silica-zirconia sol and their manufacturing method

Номер: KR0101579257B1
Автор: 강동준, 강동필
Принадлежит: 한국전기연구원

... 본 발명은 실리카-지르코니아 융합 세라믹졸을 이용한 하이브리드 박막 및 그 제조방법에 관한 것으로, 실리콘 전구체에 용매를 첨가하고 교반시켜 콜로이드상의 실리카나노졸을 제조하는 제1단계와; 상기 제1단계의 실리카나노졸에 기능성 실란을 첨가하여 실리카나노졸의 표면을 처리하는 제2단계와; 상기 제2단계를 거친 실리카나노졸에 포함된 용매를 유기용매로 대체시키거나, 농축하는 제3단계;를 거쳐 실리카 나노졸을 형성시키고, 지르코늄 전구체에 용매를 첨가하고 교반시켜 콜로이드상의 지르코니아나노졸을 제조하는 제4단계와; 상기 제4단계의 지르코니아나노졸에 기능성 실란을 첨가하여 지르코니아나노졸의 표면을 처리하는 제5단계와; 상기 제5단계를 거친 지르코니아나노졸에 포함된 용매를 유기용매로 대체시키거나, 농축하는 제6단계;를 거쳐 지르코니아 나노졸을 형성시키고, 상기 제3단계를 거쳐 형성된 실리카나노졸과 상기 6단계를 거쳐 형성된 지르코니아나노졸을 융합하는 제7단계와; 상기 제7단계에서 융합된 실리카-지르코니아 융합 세라믹졸에 기능성실란, 실리콘 화합물, 기능성 유기고분자 중 하나를 첨가하고, 교반시켜 실리카-지르코니아나노졸 하이브리드 코팅용액을 제조하는 제8단계와; 상기 제8단계의 실리카-지르코니아나노졸 하이브리드 코팅용액을 기판 상층에 습식코팅하고 건조하여 실리카-지르코니아 하이브리드박막을 제조하는 제9단계;를 포함하여 형성되는 실리카-지르코니아 융합 세라믹졸을 이용한 하이브리드 박막 제조방법을 기술적 요지로 한다. 그리고 본 발명은, 기판과; 상기 기판 상면에 코팅되는 실리카-지르코니아 하이브리드 박막;으로 구성되되, 상기 실리카-지르코니아 하이브리드 박막은, 실리콘 전구체와 지르코늄 전구체를 이용하여 실리카 나노졸과 지르코니아 나노졸을 각각 제조하고, 이들을 농축하거나 융기용매로 대체하고 기능성 실란으로 표면처리 한 후, 이를 혼합한 다음, 기능성 실란, 실리콘화합물 및 열 또는 광 경화성 고분자를 혼합하여 형성된 실리카-지르코니아 융합 세라믹졸을 포함하는 하이브리드 코팅용액을 ...

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Номер записи: 20
19-01-2016 дата публикации

HIGH SOLAR ABSORPTION AND PRODUCING METHOD OF COPPER OXIDE NANO-STRUCTURE FOR LOW EMITTING SOLAR HEAT

Номер: KR101586666B1
Автор: LEE, DAE HO, KANG, DONG PIL
Принадлежит: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

The present invention relates to high solar absorption and a producing method of a copper oxide nano-structure for low emitting solar heat, wherein the producing method comprises: a step of preparing copper (Cu); a step of coating nano-particles on a surface of the copper; a step of producing a copper oxide by oxidizing the surface of the copper coated with the nano-particles; and a step of removing the nano-particles coated on the surface of the copper oxide. Absorption rate of ultraviolet rays-visible rays by oxidizing the surface of the copper is increased and emitting rate of infrared rays is decreased. The opper oxide nano-structure for low emitting solar heat can be obtained by simple chemical oxidation in a general oxidation apparatus and the temperature. COPYRIGHT KIPO 2016 (AA) Start (BB) End (S1) Preparing copper(Cu) to be oxidized (S2) Washing the copper and pretreating the surface (S3) Coating nanoparticles on the surface of the copper (S4) Oxidizing the surface of the copper ...

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Номер записи: 21
17-03-2016 дата публикации

ORGANIC-INORGANIC NANO HYBRID COATING AGENT AND RESIN COMPRISING SILICA NANOPARTICLES OF WHICH SURFACES ARE MODIFIED WITH OLIGOMER, AND PREPARATION METHODS THEREOF

Номер: KR101604444B1
Автор: LEE, DAE HO, KANG, DONG PIL, PARK, JIN HEE, JEON, JAE HONG, HAN, SE WON
Принадлежит: KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE

The present invention provides organic-inorganic nano hybrid coating agent and resin comprising silica nanoparticles of which surfaces are modified with oligomer, and preparation methods thereof. A preparation method of an organic-inorganic nano hybrid coating agent comprising silica nanoparticles of which surfaces are modified with oligomer according to the present invention includes: a step of preparing an oligomer comprising nitrogen elements; a step of mixing and stirring the oligomer with silica of which the surface is treated through silane to prepare silica nanoparticles of which surfaces are modified with the oligomer; and a step of mixing the silica nanoparticles of which surfaces are modified with the oligomer with a polymer comprising nitrogen elements. The organic-inorganic nano hybrid coating agent comprising silica nanoparticles of which surfaces are modified with oligomer prepared by the preparation method, provides an effect that is capable of improving adhesive properties ...

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Номер записи: 22
24-03-2016 дата публикации

ORGANIC AND INORGANIC NANOHYBRID COATING AGENT COMPRISING SILICA NANOPARTICLES SURFACE-MODIFIED WITH OLIGOMERS, RESIN, AND METHOD FOR PREPARING SAME

Номер: WO2016043426A1
Автор: LEE, Dae-ho, KANG, Dong-pil, PARK, Jin-hee, JEON, Jae-hong, HAN, Se-won
Принадлежит:

The technical feature of the present invention relates to an organic and inorganic nanohybrid coating agent comprising silica nanoparticles surface-modified with oligomers, a resin, and a method for preparing the same, wherein the method comprises the steps of: preparing nitrogen atom-containing oligomers; preparing silica nanoparticles surface-modified with oligomers, by mixing and stirring silica, which is surface-treated with silane, and the oligomers; and mixing nitrogen atom-containing polymers and the silica nanoparticles surface-modified with oligomers. Thus, the organic and inorganic nanohybrid coating agent, which is prepared by comprising the silica nanoparticles surface-modified with oligomers, provides effects of improving adhesiveness, strength, and electrical characteristics, by physical twisting (chain entanglement) between the oligomers and the polymers. Furthermore, the organic and inorganic nanohybrid coating agent, comprising the silica nanoparticles surface-modified ...

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Номер записи: 23
11-05-2015 дата публикации

EPOXY-SILICA NANOPARTICLE HYBRID RESIN USING SOL-GEL TECHNIQUE, METHOD FOR PREPARING SAME, HIGHLY DISPERSED EPOXY-INORGANIC NANO/MICROPARTICLE HYBRID RESIN AND METHOD FOR PREPARING SAME

Номер: KR1020150050953A
Автор: LEE, DAE HO, KANG, DONG PIL, LEE, JU YOUNG
Принадлежит:

The present invention relates to a method for preparing a highly dispersed epoxy-inorganic nano/microparticle hybrid resin, which has no aggregation, by using a sol-gel technique without a separate mechanical dispersion apparatus in mixing an epoxy resin with an inorganic nano/microparticles, and to a method for preparing a highly dispersed epoxy-inorganic nano/microparticle hybrid resin. The method for preparing an epoxy-inorganic nano/microparticle hybrid resin comprises the steps of: mixing an organic solvent dispersion silica sol obtained by modifying the surface of a high purity nano-silica sol, which is prepared from a tetravalent alkoxysilane in a high temperature reaction condition, with a base material of epoxy and a curing agent thereof, respectively, and removing catalyst by-products to prepare a base material of epoxy, which has dispersed silica nanoparticles, and a curing agent, which has dispersed silica nanoparticles, respectively and dispersing micro inorganic particles ...

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Номер записи: 24