Abstract High dispersibility of carbon black (CB) is a great significance to its interfacial compatibility with organic or inorganic materials. We reported a type of alkyl-carbon black (aCB) nanoparticles with hydrophobic and lipophilic properties which were modified by Octadecyl isocyanate. The water contact angle of aCB was changed from 34.3°/38.9° to 102°, which exhibited excellent dispersion ability in organic solutions. Covalent modification of aCB was confirmed by the increase of particle size from 474 nm to 499 nm and the loss of organic groups at temperatures from 30 °C to 800 °C. After reaction between CB and Octadecyl isocyanate, the characteristic band of isocyanate ( N C O) disappeared and formed new amide groups or carbamate, the decrease of O 1 s and C 1 s and the increase of N 1 s confirmed the alkyl chain grafted to the surface of CB. aCB showed an organic-inorganic hybrid and multi-layer substance with disordered and high crystallization capacity.

中文翻译：

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一种具有疏水性、高分散性和高效导热性的烷基化炭黑路线

摘要 炭黑(CB)的高分散性对其与有机或无机材料的界面相容性具有重要意义。我们报道了一种由异氰酸十八烷基酯改性的具有疏水性和亲脂性的烷基炭黑 (aCB) 纳米粒子。aCB的水接触角从34.3°/38.9°变为102°，在有机溶液中表现出优异的分散能力。aCB 的共价改性通过粒径从 474 nm 增加到 499 nm 以及在 30 °C 到 800 °C 的温度下有机基团的损失得到证实。CB与异氰酸十八烷基酯反应后，异氰酸酯（NCO）的特征带消失，形成新的酰胺基或氨基甲酸酯，O 1 s 和C 1 s 的减少以及N 1 s 的增加证实了接枝到CB 表面的烷基链。aCB 显示出一种有机-无机杂化和多层物质，具有无序和高结晶能力。