Korea Kumho Petrochemical Co., Ltd.

Sang Hyo Ryu

Chung Heon Jeong

Sang Kyu Choi

Dong Hoon Oh

Dong Hwan Kim

Hyun Kyung Sung

Nam Sun Choi

Young Chan Jang

Youngchan Jang

Ho Soo Hwang

Kwon Ju

Yeon Ja Lee

Yu Hyun Song

Myung Wook Jung

Ki Hong Kim

Provided is a catalyst for manufacturing multi-wall carbon nanotubes, the catalyst including metal components according to &#x3c;Equation&#x3e; Ma:Mb=x:y, and having a hollow structure with a thickness of 0.5-10 &#x3bc;m. In the above equation, Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y=10, 2.0&#x2264;x&#x2264;7.5, and 2.5&#x2264;y&#x2264;8.0.

Catalyst for mass production of multi-wall carbon nanotubes

An embodiment of the present invention provides a rubber composition for tires and a method for producing same, wherein the rubber composition for tires includes: carbon nanotubes including structural defects on at least a portion of the surface and having a thermal decomposition temperature equal to or less than 600&#xb0; C.; and a rubber matrix.

Rubber composition for tires including carbon nanotubes, and method for producing same

A method for manufacturing multi-wall carbon nanotubes, includes the steps of: (a) dissolving a metal precursor in a solvent to prepare a precursor solution; (b) perform thermal decomposition while spraying the precursor solution into a reactor, thereby forming a catalyst powder; and (c) introducing the catalyst powder into a fluidized-bed reactor heated to 600-900&#xb0; C. and spraying a carbon-based gas and a carrier gas to synthesize multi-wall carbon nanotubes from the catalyst powder, wherein steps (a) to (c) are performed in a continuous type and wherein the catalyst powder contains metal components according to equation 1 below. &#x3c;Equation 1&#x3e; Ma:Mb=x:y, wherein Ma represents at least two metals selected from Fe, Ni, Co, Mn, Cr, Mo, V, W, Sn, and Cu; Mb represents at least one metal selected from Mg, Al, Si, and Zr; x and y each represent the molar ratio of Ma and Mb; and x+y=10, 2.0&#x2264;x&#x2264;7.5, and 2.5&#x2264;y&#x2264;8.0.

Method for manufacturing multi-wall carbon nanotubes using continuous type process

According to one aspect of the present invention, carbon nanotubes whose diameter, length, crystallinity, purity and the like are adjusted to predetermined ranges are added to a thermoplastic resin, and thus the thermoplastic resin can be provided with improved electrical conductivity.

Conductive resin composition and plastic molded product using the same

Disclosed are a carbon nanomaterial pellet and a method for preparing same. More particularly, it relates to a carbon nanomaterial pellet having a specific size and a high apparent density prepared by a simple process using only a rotary tablet press without mixing a carbon nanomaterial powder with a solvent or an additive, which is capable of solving the powder dust problem occurring when preparing a polymer composite from a carbon nanomaterial in the form of powder, thus improving physical properties and remarkably reducing cost of packaging and transportation, and a method for preparing the carbon nanomaterial pellet from a carbon nanomaterial powder.

Carbon nano-material pellets and a method for preparing the pellets from powder of carbon nano-material

Disclosed is a method for preparing a carbon nanomaterial/polymer composite. More particularly, it relates to an improved method for preparing a carbon nanomaterial/polymer composite capable of solving a dust problem of a carbon nanomaterial powder and a layer separation problem due to large density difference between the carbon nanomaterial powder and a polymer pellet and providing superior physical properties of the composite, whereby an additive used to prepare the carbon nanomaterial/polymer composite is mixed with the carbon nanomaterial powder and prepared into a pellet, which is then mixed with the polymer pellet.

Method for preparing carbon nano material/polymer composites

The present invention relates to a catalyst composition for the synthesis of multi-walled carbon nanotube having high apparent density in a manner of high yield. More particularly, this invention relates to a multi-component metal catalyst composition comprising i) main catalyst of Fe and Mo, ii) inactive support of Al and iii) optional co-catalyst at least one selected from Co, Ni, Ti, Mn, W, Sn or Cu. Further, the present invention affords multi-walled carbon nanotube having 5&#x2dc;15 nm of fibrous diameter and 0.5&#x2dc;4 &#x3bc;m bundle diameter.

Growing community of inventors

Seoul, South Korea

Sang Hyo Ryu