KR102226679B1 - 고전도도의 탄소 나노튜브 미세 구조체의 3d 프린팅 방법 및 그에 사용되는 잉크 - Google Patents
고전도도의 탄소 나노튜브 미세 구조체의 3d 프린팅 방법 및 그에 사용되는 잉크 Download PDFInfo
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Abstract
Description
도 2 는 본 발명의 일실시예에 따른 CNT 패턴 인쇄를 위한 프린팅 펜(110)의 동작 과정을 보다 상세하게 도시한 개념도이다.
도 3은 본 발명의 일실시예에 따른 패턴 인쇄 방법의 일례를 예시적으로 도시한 도면이다.
도 4는 본 발명의 일실시예에 따른 인쇄 장치를 모식적으로 나타낸 도면이다.
도 5는 본 발명의 CNT 잉크에서 유동 조절제가 CNT 표면을 둘러싼 형태를 모식적으로 도시한 도면이다.
도 6의 본 발명의 실시예에 따라 제조된 잉크의 유동 특성 측정 결과를 나타낸 그래프이다.
도 7은 본 발명의 실시예에 따라 제조된 잉크의 인쇄성을 테스트한 결과를 나타낸 그래프이다. (스케일바: 20 μm)
도 8은 본 발명의 실시예에 따라 제조된 잉크의 열중량분석 결과를 나타낸 그래프이다.
도 9는 존 발명의 실시예에 따라 구현된 다양한 구조체를 보여주는 사진이다.
도 10은 본 발명의 다른 실시예에 따른 3D 구조체의 일례를 도시한 도면이다. (스케일바: 20 μm)
도 11은 본 발명의 실시예에 따라 구현된 기능성 소자를 보여주는 사진이다.
20 CNT 잉크
22 CNT
23 유동 조절제
24 용매
100 CNT 패턴 인쇄 장치
110 노즐
120 기판 스테이지
140 위치 제어부
142 카메라
Claims (18)
- CNT 및 유동 조절제를 포함하는 CNT 복합재가 분산된 잉크를 노즐에 제공하는 단계;
상기 노즐을 기판 상의 소정 지점에 위치시키는 단계; 및
상기 노즐로부터 상기 잉크를 토출하면서 상기 기판 상의 소정 경로를 따라 상기 노즐을 이동시켜 상기 노즐의 이동 경로에 대응하는 CNT 복합재 패턴을 인쇄하는 단계를 포함하고,
상기 CNT 복합재 패턴 인쇄 단계에서, 상기 패턴은 상기 노즐과 상기 기판 사이에서 상기 노즐로부터 토출되는 상기 잉크에 의해 형성된 메니스커스 내의 용매의 증발에 의해 CNT 복합재로 적층되며,
상기 유동 조절제는 PVP, PAA 및 PEG로 이루어진 그룹 중에서 선택된 최소한 1종의 친수성 폴리머를 포함하는 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 제1항에 있어서,
상기 유동 조절제는 상기 CNT 표면을 둘러싸는 친수성 고리를 형성하는 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - CNT 및 유동 조절제를 포함하는 CNT 복합재가 분산된 잉크를 노즐에 제공하는 단계;
상기 노즐을 기판 상의 소정 지점에 위치시키는 단계; 및
상기 노즐로부터 상기 잉크를 토출하면서 상기 기판 상의 소정 경로를 따라 상기 노즐을 이동시켜 상기 노즐의 이동 경로에 대응하는 CNT 복합재 패턴을 인쇄하는 단계를 포함하고,
상기 CNT 복합재 패턴 인쇄 단계에서, 상기 패턴은 상기 노즐과 상기 기판 사이에서 상기 노즐로부터 토출되는 상기 잉크에 의해 형성된 메니스커스 내의 용매의 증발에 의해 CNT 복합재로 적층되며,
상기 잉크는 전단 속도(s-1) 10에서 점도가 37.99~88.38 mPa·S이고, 10-1 내지 10 Pa의 전단응력하에서 손실탄성률이 저장탄성률보다 큰 값을 갖는 것을 특징으로 하는 복합재 구조체의 제조 방법. - 제1항에 있어서,
상기 잉크 중의 CNT 복합재 농도는 22 ~ 35 중량%인 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 제1항에 있어서,
상기 잉크 중의 CNT 농도는 5 ~ 10 중량%인 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 삭제
- 삭제
- 삭제
- 제1항 또는 제3항에 있어서,
상기 인쇄 단계 이후에 상기 적층된 CNT 복합재 중 상기 유동 조절제의 최소한 일부를 제거하는 단계를 더 포함하는 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 제9항에 있어서,
상기 제거 단계 이후에 상기 CNT 복합재 중 CNT 함량은 50 중량% 이상인 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 제9항에 있어서,
상기 제거 단계 이후에 상기 CNT 복합재 중 CNT 함량은 70 중량% 이상인 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - 제1항에 있어서,
상기 용매는 물, 알코올, 아세톤 및 디클로로메탄으로 이루어진 극성용매 그룹 중에서 선택된 최소한 1종인 것을 특징으로 하는 CNT 복합재 구조체의 제조 방법. - CNT, 유동 조절제 및 용매를 포함하는 CNT 복합재가 분산된 CNT 잉크에 있어서,
상기 잉크는 상기 잉크는 전단 속도(s-1) 10에서 점도가 37.99~88.38 mPa·S이고, 10-1 내지 10 Pa의 전단응력하에서 손실탄성률이 저장탄성률보다 큰 값을 갖는 것을 특징으로 하는 CNT 잉크. - 삭제
- 제13항에 있어서,
상기 CNT 복합재의 농도는 22~35 중량% 인 것을 특징으로 하는 CNT 잉크. - 제15항에 있어서,
상기 유동 조절제는 PVP, PAA 및 PEG로 이루어진 그룹 중에서 선택된 최소한 1종의 친수성 폴리머를 포함하는 특징으로 하는 CNT 잉크. - 제13항에 있어서,
상기 잉크 중 CNT 함량과 유동 조절제 함량의 중량비는 1:1~1:5인 것을 특징으로 하는 CNT 잉크. - 제13항에 있어서,
상기 용매는 100℃ 이하의 비점을 갖는 것을 특징으로 하는 CNT 잉크.
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| PCT/KR2016/012553 WO2018016680A1 (ko) | 2016-07-21 | 2016-11-03 | 고전도도의 탄소 나노튜브 미세 구조체의 3d 프린팅 방법 및 그에 사용되는 잉크 |
| US16/319,258 US11512210B2 (en) | 2016-07-21 | 2016-11-03 | Method for 3D printing of carbon nanotube microstructure having high conductivity, and ink used therein |
| US18/046,442 US20230053799A1 (en) | 2016-07-21 | 2022-10-13 | Method for 3d printing of carbon nanotube microstructure having high conductivity, and ink used therein |
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| KR102221529B1 (ko) * | 2019-10-14 | 2021-03-02 | 한국생산기술연구원 | 나노 스케일 3d 프린팅 방법 |
| KR20210052886A (ko) * | 2019-11-01 | 2021-05-11 | 한국전기연구원 | 양자점 색변환 구조체를 갖는 컬러필터, 이를 포함하는 표시장치 및 그 제조방법 |
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| US20240397806A1 (en) * | 2021-09-23 | 2024-11-28 | The University Of Vermont And State Agricultural College | Force-Balanced Meniscal Dispensers for Depositing Crystalline Layers, and Methods of Printing Crystalline Patterned Features |
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