SURFACE-TREATED CARBON NANOTUBE AND RESIN COMPOSITION
申请人:Asahi Kasei Chemicals Corporation
公开号:EP2824069A1
公开(公告)日:2015-01-14
Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600°C in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm% and the surface sulfur concentration is less than 0.1 atm%.
Surface-treated carbon nanotube and resin composition
申请人:ASAHI KASEI CHEMICALS CORPORATION
公开号:US10479853B2
公开(公告)日:2019-11-19
Provided is a surface-treated carbon nanotube having few surface fractures, not reducing the molecular weight of the resin to be mixed and having excellent extrudability. In the surface-treated carbon nanotube, the thermal reduction amount at 600° C. in a nitrogen atmosphere is 0.2 to 40%, the surface oxygen concentration measured by X-ray photoelectron spectroscopy (XPS) is 1.5 to 40 atm % and the surface sulfur concentration is less than 0.1 atm %.
本发明提供了一种表面处理过的碳纳米管,其表面断裂少,不会降低待混合树脂的分子量,挤出性极佳。在表面处理过的碳纳米管中,在 600° C 的氮气环境中的热还原量为 0.2 至 40%,用 X 射线光电子能谱(XPS)测量的表面氧浓度为 1.5 至 40 atm %,表面硫浓度小于 0.1 atm %。
Stable Biscarbodiimides
作者:Yoshio Iwakura、Kohji Noguchi
DOI:10.1246/bcsj.40.2383
日期:1967.10
The dehydrosulfurization of bisthioureas containing at least one aromatic residue results in the corresponding biscarbodiimides. Biscarbodiimides with bulky groups, such as t-butyl and 2,6-xylyl, can be isolated without any polymerization and disproportionation; the steric hindrance of the bulky groups makes such isolation possible. Polymerization and disproportionation interrupt the isolation of biscarbodiimides with less bulky groups. Despite their nonpolymerizability, they give rise to the other known addition reaction of aromatic carbodiimides.