Abstract:
PURPOSE: A method for manufacturing a carbon rod for synthesizing a carbon nanotube is provided to inexpensively manufacture the carbon nanotube with a carbon rod made of expanded graphite, and to uniform quality of the carbon nanotube. CONSTITUTION: A method for manufacturing a carbon rod for synthesizing a carbon nanotube includes the following steps: preparing expanded graphite containing sulfuric acid and nitric acid(S110); producing the expanded graphite by heat-treating the expanded graphite in the air(S120); gaining a solid or a liquid mixture by mixing graphite and catalyst particles(S130); and completing the carbon rod by molding and compressing the solid or the liquid mixture(S140). The catalyst particles contain Fe, Ni, Co, FeS, NiS, CoS or a mixture of other materials.
Abstract:
본 발명은, 용액 상태에서 고분자 물질 내에 탄소나노튜브를 균일하게 나노 분산시키고, 극성이 다른 특정 용매를 사용함으로써 탄소나노튜브와 고분자 물질과의 혼합물을 상 분리에 의해 순간 침전시켜, 우수한 분산 상태를 나타내는 탄소나노튜브-폴리카보네이트 컴파운드 제조 방법에 관한 것이다. 본 발명에 따른 탄소나노튜브-폴리카보네이트 컴파운드 제조 방법은 탄소나노튜브-폴리카보네이트 용액을 제공하는 단계; 아세톤 수용액을 제공하는 단계; 상기 탄소나노튜브-폴리카보네이트 용액에 상기 아세톤 수용액을 첨가하여 침전물을 생성하는 단계; 및 생성된 상기 침전물을 분리하는 단계를 포함하는 것을 구성적 특징으로 한다. 탄소나노튜브, 폴리카보네이트 화합물
Abstract:
PURPOSE: A producing method of a carbon nanotube-polycarbonate compound is provided to produce a compound in which a carbon nanotube is uniformly dispersed in a polymer matrix, and to reduce the producing cost. CONSTITUTION: A producing method of a carbon nanotube-polycarbonate compound comprises the following steps: producing a carbon nanotube-polycarbonate solution(S100); providing an acetone solution(S200); producing a precipitate by adding the acetone solution to the nanotube-polycarbonate solution(S300); and separating the precipitate(S400). The mixture ratio of distilled water and acetone of the acetone solution is 1.2:0.8. The producing method additionally comprises a step of drying the precipitate for 24 hours at the temperature over 60 deg C.
Abstract:
PURPOSE: A purity improvement method of a water-dispersed carbon nanotube solution, and the water-dispersed carbon nanotube solution manufactured therefrom are provided to use an organic solvent for selectively remove a surplus dispersing agent. CONSTITUTION: A purity improvement method of a water-dispersed carbon nanotube solution comprises the following steps: mixing a raw material water-dispersible carbon nanotube solution(10) containing a surplus dispersing agent(18), with an organic solvent(20) to form a mixed solution; rotating the mixed solution to form a colloid particle with the surplus dispersing agent around a particle of the raw material water-dispersible carbon nanotube solution; phase separating the water-dispersible carbon nanotube solution(10a) from the organic solvent, for extracting the colloid particle; and separating the water-dispersible carbon nanotube solution.
Abstract:
본 발명은 전기 방전법에 의한 탄소나노튜브를 합성하기 위해 사용되는 탄소봉을 팽창 흑연재료를 이용하여 제작하는 방법에 관한 것이다. 본 발명에 따르는 탄소나노튜브 합성용 탄소봉은 (i) 흑연층 사이에 황산 및 질산 중의 적어도 하나가 함유된 가팽창 흑연을 준비하는 단계; (ii) 상기 가팽창 흑연을 공기 분위기에서 열처리하여 팽창 흑연을 생성하는 단계; (iii) 상기 생성된 팽창 흑연과 촉매 입자를 고상 또는 액상 혼합하여 고상 또는 액상 혼합물을 얻는 단계; 및 (iv) 상기 고상 또는 액상 혼합물을 압축 성형하여 탄소나노튜브 합성용 탄소봉을 완성하는 단계에 의해 구성되는 것을 특징으로 한다. 탄소봉, 탄소나노튜브, 팽창 흑연
Abstract:
PURPOSE: A method for preparing CNT powder coated with metal nanoparticles is provided to ensure high dispersibility and bondability by applying metal to the surface of a carbon nanotube with affinity and density similar to metal used for a carbon nanotube/metal complex. CONSTITUTION: A method for preparing CNT powder coated with metal nanoparticles comprises the steps of: treating a carbon nanotube with a strong acid; mixing the carbon nanotube treated with a strong acid with metal acetylacetonate solution; filtering the carbon nanotube/metal acetylacetonate mixture and drying it to obtain carbon nanotube/metal acetylacetonate powder; and heating the carbon nanotube/metal acetylacetonate powder in a reactor of a non-oxidizing atmosphere, decomposing the metal acetylacetonate, and coating the surface of the carbon nanotube with the metal nanoparticles.