KR102061451B1 - 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 - Google Patents
탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 Download PDFInfo
- Publication number
- KR102061451B1 KR102061451B1 KR1020190055730A KR20190055730A KR102061451B1 KR 102061451 B1 KR102061451 B1 KR 102061451B1 KR 1020190055730 A KR1020190055730 A KR 1020190055730A KR 20190055730 A KR20190055730 A KR 20190055730A KR 102061451 B1 KR102061451 B1 KR 102061451B1
- Authority
- KR
- South Korea
- Prior art keywords
- carbon
- microcoil
- nanocoil
- carbon paper
- comparative example
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 225
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 213
- 239000000463 material Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims description 9
- 230000008569 process Effects 0.000 title description 2
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000003054 catalyst Substances 0.000 claims description 16
- 229920005749 polyurethane resin Polymers 0.000 claims description 13
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 11
- 239000000654 additive Substances 0.000 claims description 9
- 230000000996 additive effect Effects 0.000 claims description 9
- 230000008021 deposition Effects 0.000 claims description 9
- 230000002194 synthesizing effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 239000011203 carbon fibre reinforced carbon Substances 0.000 claims 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 239000002904 solvent Substances 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 claims 1
- 238000010521 absorption reaction Methods 0.000 abstract description 26
- 230000000694 effects Effects 0.000 abstract description 10
- 230000000052 comparative effect Effects 0.000 description 75
- 229910021393 carbon nanotube Inorganic materials 0.000 description 21
- 239000002041 carbon nanotube Substances 0.000 description 21
- 230000007246 mechanism Effects 0.000 description 15
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 14
- 239000007789 gas Substances 0.000 description 14
- 239000003575 carbonaceous material Substances 0.000 description 12
- 238000004458 analytical method Methods 0.000 description 8
- 238000000151 deposition Methods 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 238000009396 hybridization Methods 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000000919 ceramic Substances 0.000 description 6
- 238000000349 field-emission scanning electron micrograph Methods 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 238000009832 plasma treatment Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000011888 foil Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000005465 channeling Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 229920005570 flexible polymer Polymers 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 2
- VOEFELLSAAJCHJ-UHFFFAOYSA-N 1-(3-chlorophenyl)-2-(methylamino)propan-1-one Chemical compound CNC(C)C(=O)C1=CC=CC(Cl)=C1 VOEFELLSAAJCHJ-UHFFFAOYSA-N 0.000 description 1
- UEJBEYOXRNGPEI-UHFFFAOYSA-N 1-(4-chlorophenyl)-2-(methylamino)propan-1-one Chemical compound CNC(C)C(=O)C1=CC=C(Cl)C=C1 UEJBEYOXRNGPEI-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000036039 immunity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 229910021392 nanocarbon Inorganic materials 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
- D21H13/50—Carbon fibres
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/15—Nano-sized carbon materials
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
도 2는 비교예 10에 따른 카본페이퍼의 전자파 차폐 효율을 나타낸 그래프이다.
도 3은 탄소마이크로코일 소재의 FESEM 이미지를 나타낸다.
도 4는 탄소나노코일 소재의 FESEM 이미지를 나타낸다.
도 5는 실시예 4 및 5, 비교예 2 및 9에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다.
도 6은 본 발명의 실시예 1에 따른 카본페이퍼의 작용을 나타낸 그림이다.
도 7은 본 발명의 비교예 10, 12 및 14에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다.
도 8은 본 발명의 비교예 11에 따른 카본페이퍼의 전자파 차폐 효율을 나타낸 그래프이다.
도 9는 본 발명의 비교예 2 내지 8에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다.
도 10은 본 발명의 실시예 1에 따른 카본페이퍼의 유연성을 나타낸 이미지이다.
도 11은 본 발명의 실시예 1에 따른 카본페이퍼를 제조하는 과정을 개략적으로 나타낸 그림이다.
도 12는 본 발명의 실시예 1, 비교예 1, 2, 11 및 13에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다.
도 13은 실시예 1 및 비교예 2에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다
도 14는 실시예 1 및 비교예 15에 따른 카본페이퍼의 전자파 차폐 효율을 비교한 그래프이다.
조성 | 제조 온도(℃) | 두께 (mm) | PU (중량%) | DMF (중량%) | |
실시예 1 | CMC-CNC | 850 | 2.0 | 78 | 0 |
실시예 2 | CMC-CNC | 750 | 2.0 | 78 | 0 |
실시예 3 | CMC-CNC | 650 | 2.0 | 78 | 0 |
실시예 4 | CMC-CNC | 850 | 2.0 | 88 | 0 |
실시예 5 | CMC-CNC | 850 | 2.0 | 94 | 0 |
비교예 1 | CNC | 850 | 2.0 | 78 | 0 |
비교예 2 | CMC | 850 | 2.0 | 88 | 0 |
비교예 3 | CMC | 850 | 1.8 | 88 | 0 |
비교예 4 | CMC | 850 | 1.6 | 88 | 0 |
비교예 5 | CMC | 850 | 1.4 | 88 | 0 |
비교예 6 | CMC | 850 | 1.2 | 88 | 0 |
비교예 7 | CMC | 850 | 1.0 | 88 | 0 |
비교예 8 | CMC | 850 | 0.8 | 88 | 0 |
비교예 9 | CMC | 850 | 2.0 | 94 | 0 |
비교예 10 | CMC | 850 | 2.0 | 35.2 | 58.8 |
비교예 11 | CNT | 850 | 2.0 | 88 | 0 |
비교예 12 | CNT | 850 | 2.0 | 35.2 | 58.8 |
비교예 13 | CNC, CNT | 850 | 2.0 | 78 | 0 |
비교예 14 | CMC, CNT | 850 | 2.0 | 35.2 | 58.8 |
비교예 15 | Al | - | - | - | - |
Claims (6)
- 증착 장치내로 C2H2 및 첨가가스를 주입하는 단계;
상기 증착 장치에 +/- 바이어스 전압을 인가하여 탄소마이크로코일-탄소나노코일의 하이브리드 소재를 합성하는 단계; 및
용매의 부재하에서 초음파 분산법에 의해서 상기 탄소마이크로코일-탄소나노코일의 하이브리드 소재를 폴리우레탄 수지와 혼합하여 카본 페이퍼를 제조하는 단계;
를 포함하는, 10 GHz 이상 26 GHz 이하의 전자파 흡수를 위한 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본 페이퍼의 제조방법. - 제 1 항에 있어서,
상기 탄소마이크로코일-탄소나노코일의 하이브리드 소재를 합성하는 단계는, 촉매층이 제공되어 상기 촉매층 상에서 합성이 진행되는 것을 특징으로 하는, 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법. - 제 2 항에 있어서,
상기 촉매층은 니켈을 포함하는 것을 특징으로 하는, 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법. - 제 1 항에 있어서,
상기 탄소마이크로코일-탄소나노코일의 하이브리드 소재에서 탄소마이크로코일의 직경이 1 μm 이상 3 μm 이하인 것을 특징으로 하는, 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법. - 제 1 항에 있어서,
상기 첨가가스는 SF6 인 것을 특징으로 하는, 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법. - 제 1 항에 있어서,
상기 폴리우레탄 수지와의 혼합은, 초음파 분산법에 의해서 수행되는 것을 특징으로 하는, 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020190055730A KR102061451B1 (ko) | 2019-05-13 | 2019-05-13 | 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020190055730A KR102061451B1 (ko) | 2019-05-13 | 2019-05-13 | 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020170104411A Division KR20190023112A (ko) | 2017-08-17 | 2017-08-17 | 탄소마이크로코일-탄소나노코일 하이브리드 소재를 포함하는 카본페이퍼 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20190056351A KR20190056351A (ko) | 2019-05-24 |
KR102061451B1 true KR102061451B1 (ko) | 2020-01-02 |
Family
ID=66680429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020190055730A Active KR102061451B1 (ko) | 2019-05-13 | 2019-05-13 | 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR102061451B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230137125A (ko) | 2022-03-21 | 2023-10-04 | (주)에스에이치코리아 | 듀얼 전자파 차폐 발열필름 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102746434B1 (ko) * | 2022-02-07 | 2024-12-27 | 신라대학교 산학협력단 | 탄소 나노 섬유를 선택적 또는 비 선택적으로 성장시킨 탄소 마이크로 코일-탄소 섬유 하이브리드 탄소 포 및 그 제조방법 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009060060A (ja) | 2007-09-03 | 2009-03-19 | Osaka Industrial Promotion Organization | 電磁波吸収シート |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101771899B1 (ko) | 2015-12-01 | 2017-09-12 | 국민대학교산학협력단 | 전자파 차폐용 금속/탄소 하이브리드 입자의 제조방법, 그 제조방법으로 제조된 입자 및 기재의 코팅방법 |
-
2019
- 2019-05-13 KR KR1020190055730A patent/KR102061451B1/ko active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009060060A (ja) | 2007-09-03 | 2009-03-19 | Osaka Industrial Promotion Organization | 電磁波吸収シート |
Non-Patent Citations (3)
Title |
---|
G.-H. Kang, S.-H. Kim, Effect of incorporating carbon nanocoils on the efficiency ofelectromagnetic-wave shielding of carbon-nanomaterial composites, Applied Surface Science, 380 (2016), pp114-118* |
Shaoming Yang, Morphology and microstructure of spring-like carbon micro-coils/nano-coils prepared by catalytic pyrolysis of acetylene using Fe-containing alloy catalysts, Carbon, v43, 2005, 827-834 |
W. In-Hwang, Effect of external electromagnetic field and bias voltage on the chemical vapor growth of the carbon micro-coils and their properties, Carbon, Vol38, issue 4, 2000, pp565-571, 2000.02.28* |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20230137125A (ko) | 2022-03-21 | 2023-10-04 | (주)에스에이치코리아 | 듀얼 전자파 차폐 발열필름 |
Also Published As
Publication number | Publication date |
---|---|
KR20190056351A (ko) | 2019-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Zachariah et al. | Hybrid materials for electromagnetic shielding: A review | |
JP7566296B2 (ja) | 電磁放射線を遮蔽するためのコンポジット材料、付加製造方法のための原材料及びそのコンポジット材料を含む製品並びにその製品を製造する方法 | |
Wang et al. | Microwave absorption properties of carbon nanotubes-epoxy composites in a frequency range of 2-20 GHz | |
Barani et al. | Graphene epoxy-based composites as efficient electromagnetic absorbers in the extremely high-frequency band | |
Kato et al. | Stretchable electromagnetic-interference shielding materials made of a long single-walled carbon-nanotube–elastomer composite | |
KR101388428B1 (ko) | 식물 소성물 및 전자파 차폐체 | |
KR102645530B1 (ko) | 방열 및 전자파 차폐/흡수능을 가지는 다기능성 복합 필름 및 이의 제조방법 | |
JP5205947B2 (ja) | 樹脂炭素複合材料 | |
JP2007115854A (ja) | 電磁波吸収体 | |
JP4836581B2 (ja) | GHz帯域電子部品用樹脂組成物及びGHz帯域電子部品 | |
KR102061451B1 (ko) | 탄소마이크로코일-탄소나노코일의 하이브리드 소재 함유 카본페이퍼의 제조방법 | |
CN100388873C (zh) | 电磁波噪声抑制体、具有电磁波噪声抑制功能的物品及其制造方法 | |
JP2009060060A (ja) | 電磁波吸収シート | |
KR101560570B1 (ko) | 전자파 간섭 노이즈 차폐와 흡수, 방열 및 전기 절연 복합 시트용 조성물 및 이를 포함하는 복합 시트 | |
KR102578285B1 (ko) | 전자파 차폐 복합소재 및 이의 제조방법 | |
Nivedhitha et al. | Polyvinylidene fluoride—An advanced smart polymer for electromagnetic interference shielding applications—A novel review | |
JP2010161337A (ja) | 植物焼成物及び電磁波遮蔽体 | |
Li et al. | Boron nitride-and carbon nanotube-bridged interfaces for boosting thermal conduction and electromagnetic wave absorption | |
KR20190023112A (ko) | 탄소마이크로코일-탄소나노코일 하이브리드 소재를 포함하는 카본페이퍼 | |
JP4462891B2 (ja) | 電磁波吸収用塗料組成物、電磁波吸収性ハウジング及び電磁波吸収用フィルム又はシート | |
Qiu et al. | Design of 3D graphene‐Ni microsphere based polymeric composites for highly efficient and absorption‐dominated electromagnetic interference shielding performance | |
Huang et al. | Tuning dielectric and electromagnetic absorption properties of SiC fiber by in-situ grown polycrystalline carbon nanowires | |
KR20110113999A (ko) | 전자파 차폐용 시트 조성물, 시트 및 이의 제조방법 | |
JP2000244167A (ja) | 電磁波障害防止材 | |
JP2010161338A (ja) | 植物焼成物、それを備えた電磁波遮蔽体、電子機器、電子機器の検査装置及び建材 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A107 | Divisional application of patent | ||
A201 | Request for examination | ||
PA0107 | Divisional application |
Comment text: Divisional Application of Patent Patent event date: 20190513 Patent event code: PA01071R01D Filing date: 20170817 Application number text: 1020170104411 |
|
PA0201 | Request for examination | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 20190520 Patent event code: PE09021S01D |
|
PG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 20191219 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 20191224 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 20191224 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
PR1001 | Payment of annual fee |
Payment date: 20221215 Start annual number: 4 End annual number: 4 |
|
PR1001 | Payment of annual fee |
Payment date: 20231205 Start annual number: 5 End annual number: 5 |
|
PR1001 | Payment of annual fee |
Payment date: 20241209 Start annual number: 6 End annual number: 6 |