摘要:
Belt reversing mechanisms configured to reverse a belt at an upstream portion and a downstream portion of a return belt of a belt conveyor, includes two sets of pinch rollers spaced apart from each other in a belt movement direction and configured to support the belt, and two sets of guide roller mechanisms spaced apart from each other in the belt movement direction and are configured to guide the belt in a tubular shape from outside between the pinch rollers such that the belt is reversed 180 degrees and twisted to cause a center portion of a span between the pinch rollers so as to form a tubular open cross-section with a dirty surface facing inward; and the belt between the two sets of pinch rollers forms a catenary curve or a curve close to the catenary curve.
摘要:
Belt reversing mechanisms configured to reverse a belt at an upstream portion and a downstream portion of a return belt of a belt conveyor, includes two sets of pinch rollers spaced apart from each other in a belt movement direction and configured to support the belt, and two sets of guide roller mechanisms spaced apart from each other in the belt movement direction and are configured to guide the belt in a tubular shape from outside between the pinch rollers such that the belt is reversed 180 degrees and twisted to cause a center portion of a span between the pinch rollers so as to form a tubular open cross-section with a dirty surface facing inward; and the belt between the two sets of pinch rollers forms a catenary curve or a curve close to the catenary curve.
摘要:
A carbon nanotubes (CNTs)-containing resin composite comprised of a synthetic resin-impregnated aligned CNTs aggregate to have a specific surface area of at least 600 m2/g. Its production method comprises a step of laying down an aligned CNTs aggregate having grown perpendicularly from a substrate, a step of impregnating the laid-down aligned CNTs aggregate with a resin, and a step of shaping the resin-impregnated aligned CNTs aggregate into a sheet. Accordingly, there are provided a CNTs-containing resin composite having a high CNT content and a high degree of alignment and having a desired shape capable of fully taking the advantages of anisotropy intrinsic to CNTs, and a production method capable of producing it with ease.
摘要:
An aligned carbon nanotube bulk structure capable of attaining high density and high hardness not found so far. The aligned carbon nanotube bulk structure has a plurality of carbon nanotubes (CNTs) applied with a density-increasing treatment, and having alignment in a predetermined direction, the structure has a degree of anisotropy of 1:3 or more between the direction of alignment and the direction vertical to the direction of alignment, and the intensity by irradiating X-rays along the direction of alignment is higher than the intensity by irradiating X-rays from the direction vertical to the direction of alignment at a (002) peak in X-ray diffraction data, and the degree of alignment thereof satisfies predetermined conditions.
摘要:
An electrochemical capacitor comprising a nonaqueous electrolyte and a pair of polarizable electrodes, wherein carbon nanotubes are used as an electrode material for at least one of the positive electrode and the negative electrode, the carbon nanotubes have a specific surface area of at least 700 m2/g and contain semiconductive carbon nanotubes, and the electrode material exhibits a voltage dependency of differential capacity by electrochemical doping. The electrochemical capacitor solves the problems associated with activated carbon electrodes and, exploiting the excellent characteristics of carbon nanotubes, has increased capacitance and increased energy density, therefore realizing a reduced internal resistance and a prolonged service life.
摘要:
This invention provides an aligned single-layer carbon nanotube bulk structure, which comprises an assembly of a plurality of aligned single-layer carbon nanotube and has a height of not less than 10 μm, and an aligned single-layer carbon nanotube bulk structure which comprises an assembly of a plurality of aligned single-layer carbon nanotubes and has been patterned in a predetermined form. This structure is produced by chemical vapor deposition (CVD) of carbon nanotubes in the presence of a metal catalyst in a reaction atmosphere with an oxidizing agent, preferably water, added thereto. An aligned single-layer carbon nanotube bulk structure, which has realized high purify and significantly large scaled length or height, its production process and apparatus, and its applied products are provided.
摘要:
An aligned carbon nanotube bulk structure capable of attaining high density and high hardness not found so far. The aligned carbon nanotube bulk structure has a plurality of carbon nanotubes (CNTs) applied with a density-increasing treatment, and having alignment in a predetermined direction, the structure has a degree of anisotropy of 1:3 or more between the direction of alignment and the direction vertical to the direction of alignment, and the intensity by irradiating X-rays along the direction of alignment is higher than the intensity by irradiating X-rays from the direction vertical to the direction of alignment at a (002) peak in X-ray diffraction data, and the degree of alignment thereof satisfies predetermined conditions.
摘要:
An apparatus (CVD apparatus (1)) having a reaction chamber (3) for accommodating a substrate (2) formed with a metal catalyst film and means (gas supply pipes (5, 6)) for supplying a feedstock gas (9) and a catalyst activating material (10) into the reaction chamber (3) for manufacturing CNTs aligned in a direction perpendicular to the catalyst film surface (2a) of the substrate (2), wherein the means for supplying the feedstock gas (9) and the catalyst activating material (10) have a plurality of ejection holes placed at positions facing the catalyst film surface (2a) of the substrate (2), and the ejecting direction of the ejection holes is adjusted to the direction of alignment of CNTs grown from the metal catalyst film. This can provide a manufacturing technology for CNTs capable of mass-producing aligned CNTs at lower cost.
摘要:
An aligned carbon nanotube bulk aggregate of the invention is characterized by consisting of plural carbon nanotubes aligned in a predetermined direction and having a density of 0.2 to 1.5 g/cm3. The carbon nanotube bulk aggregate can be produced by a process of growing carbon nanotubes by chemical vapor deposition (CVD) in the presence of a metal catalyst which comprises growing carbon nanotubes in aligned state in a reaction atmosphere, soaking the obtained carbon nanotubes with a liquid, and then drying the resulting nanotubes. Thus, an aligned carbon nanotube bulk aggregate having a density of 0.2 to 1.5 g/cm3 can be obtained. The invention provides a high density and a high hardness which were not attained in the prior art, and a process for the production of the same.
摘要翻译:本发明的排列碳纳米管块状聚集体的特征在于由规定方向排列的多个碳纳米管组成,密度为0.2〜1.5g / cm 3。 碳纳米管块状聚集体可以通过在金属催化剂的存在下通过化学气相沉积(CVD)生长碳纳米管的方法来生产,该金属催化剂包括在反应气氛中以对准状态生长碳纳米管,将得到的碳纳米管与液体 ,然后干燥所得的纳米管。 因此,可以得到密度为0.2〜1.5g / cm 3的排列碳纳米管块状集料。 本发明提供了现有技术中未达到的高密度和高硬度及其制备方法。
摘要:
The electrochemical capacitor of the invention comprises a nonaqueous electrolyte and a pair of polarizable electrodes, wherein carbon nanotubes are used as an electrode material for at least one of the positive electrode and the negative electrode, the carbon nanotubes have a specific surface area of at least 700 m2/g and contain semiconductive carbon nanotubes, and the electrode material exhibits a voltage dependency of differential capacity by electrochemical doping.The electrochemical capacitor solves the problems with activated carbon electrodes and, exploiting the excellent characteristics of carbon nanotubes, has further increased capacitance and increased energy density, therefore realizing a reduced internal resistance and a prolonged service life.