(EP3406328) Carbon nanotube pellets and method for manufacturing same 机翻标题: 暂无翻译,请尝试点击翻译按钮。

源语言标题
(EP3406328) Carbon nanotube pellets and method for manufacturing same
公开号/公开日
EP3406328EP3406328 / 2019-10-092018-11-28
申请号/申请日
EP16886618 / 2016-10-17
发明人
KANG KYUNG YEONKIM YELINWOO JIHEELEE SEUNGYONGJANG HYUNGSIKCHO DONG HYUNCHOY SANG HOON;
申请人
LG CHEM;
主分类号
IPC分类号
B01F-007/08 B30B-011/22 B30B-011/24 C01B-032/00 C01B-032/991 C04B-035/52 C04B-035/626 C04B-035/83 H01B-001/24
摘要
(EP3406328) The carbon nanotube pellets according to the present invention are produced by using only a small amount of solvent and have increased apparent density. The present invention can improve the problems of the change of the content generated by scattering of powders and safety issues by using carbon nanotubes in the form of pellet rather than carbon nanotubes in the form of powder in composite materials. And since the density of the pellet form is higher than that of the powder form, transport, transfer and improvement become easier. Therefore, it can be more effectively applied to the manufacturing of composite materials.
机翻摘要
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地址
代理人
(EP3406328) Goddar, Heinz J. ; Boehmert & Boehmert ([DE]) Reg. Nb: 100002032
代理机构
;
优先权号
2016KR-0006935 2016WO-KR11602
主权利要求
(EP3406328) 1. Carbon nanotube pellets having an apparent density of 90 kg/m3 or more, which are obtained by mixing carbon nanotubes (CNTs) and a solvent at a weight ratio of 5:1 to 1:2 and extruding the mixture. 2. The carbon nanotube pellets according to claim 1, wherein the pellets has a diameter of 3 mm to 20 mm and a length of 10 mm to 200 mm. 3. The carbon nanotube pellets according to claim 1, wherein a compression ratio of the carbon nanotubes (CNTs) satisfies by the following Expression 1. CNT compression ratio %=apparent density of CNT pellet/apparent density of CNT before compression 4. The carbon nanotube pellets according to claim 1, wherein a particle size (D50) of the carbon nanotubes contained in the pellets is 200 µm or less. 5. The carbon nanotube pellets according to claim 1, wherein a particle size (D50) of the carbon nanotubes contained in the pellets is 20 µm or less. 6. The carbon nanotube pellets according to claim 1, wherein a particle size (D50) of the carbon nanotubes contained in the pellets is 60% or less of an average particle size (D50) of the carbon nanotubes before compression. 7. The carbon nanotube pellets according to claim 1, wherein a particle size of the carbon nanotubes contained in the pellets is D50 of 20 µm or less and D90 of 50 µm or less. 8. The carbon nanotube pellets according to claim 1, wherein the solvent is at least one selected from the group consisting of water, alcohols, Cellosolve, ketones, amides, esters, ethers, aromatic hydrocarbons, and aliphatic hydrocarbons. 9. A method for producing carbon nanotube pellets, comprising the steps of:   mixing and stirring carbon nanotubes and a solvent at a weight ratio of 5: 1 to 1: 2 to prepare a carbon nanotube paste;   extruding the carbon nanotube paste with an extruder to mold into pellets; and   drying the pellets. 10. The method for producing carbon nanotube pellets, comprising the steps of:   premixing carbon nanotubes and a solvent;   mixing the premixed solution of carbon nanotubes to prepare a carbon nanotube paste having the carbon nanotubes and the solvent at a weight ratio of 5: 1 to 1: 2;   transferring the carbon nanotube paste into an extruder and extruding it into pellets; and   drying the pellets. 11. The method for producing carbon nanotube pellets according to claim 10, wherein the premixed solution of carbon nanotubes is mixed to be the carbon nanotube paste by using a screw mixer apparatus. 12. The method for producing carbon nanotube pellets according to claim 9 or 10, wherein the method further comprises the step of drying the pellets at 100 °C or higher for a predetermined time. 13. The method for producing carbon nanotube pellets according to claim 9 or 10, wherein a particle size (D50) of the carbon nanotubes contained in the pellets is 60% or less of a particle size (D50) of the carbon nanotubes before compression. 14. The method for producing carbon nanotube pellets according to claim 9 or 10, wherein the method further comprises the steps of:   dispersing the carbon nanotube pellets in the solvent to prepare a mixed solution of carbon nanotubes; and   extruding the mixed solution of carbon nanotubes with the extruder again to mold it into pellets. 15. The method for producing carbon nanotube pellets according to claim 14, wherein the mixed solution in which the carbon nanotube pellets are dispersed has a viscosity of 4000 cps or less. 16. A CNT composite material produced by using the carbon nanotube pellets of any one of claims 1 to 8.
法律状态
PENDING
专利类型码
A4A1
国别省市代码
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