Development of the functional particle manufacture process by carbon hybrid costing

炭黑具有很强的着色力和较高的导电性，具有优异的性能。然而，由于它以小颗粒的形式存在，分散性差，难以控制，导致环境恶化。直接炭黑粒子虽然是常规供应并与水溶胶混合，但不能形成复合材料，也不能形成杂交。这项研究开发了一种工艺，即在核心颗粒的表面均匀地涂覆碳黑颗粒。实验是根据现有的理论设计的。1)表面改性是通过在氧化铁颗粒表面吸附SiH_4有机化合物进行的。2)将炭黑颗粒与高浓度的氧化铁颗粒水溶胶混合，进行表面改性。实验明确了SiH4有机物吸附炭黑颗粒作为糊剂的条件。3)观察了炭黑在氧化铁颗粒表面的附着状态，阐明了碳包覆机理。4)通过分子模拟得到了炭黑在氧化铁颗粒表面包覆的机理。对实验结果和模拟结果进行了对比和检验。5)在其他氧化物粒子的包覆上也验证了该方法的有效性。

Carbon black has been known to exhibit some outstanding functions, such as strong coloring power and high electrical conductivity. However, since it presents as small particles so that the dispersibility is poor and hardly to control as well as causes worse environment aggravation. Although the direct carbon black particles were conventionally supplied and mixed with hydrosol, they can not form composites as well as hybridization. This research developed a process, where carbon black particles were uniformly coated on the surface of core particles. The experiments were designed by considering the present available theories.1) Surface modification was performed by adsorbing the organic compound of a SiH_4 on the surface of iron oxide particles.2) The carbon black particles were mixed with high concentration hydrosol of the iron oxide particles, at which the surface modification was carried out. The conditions of which a SiH_4 organic matter can adsorb carbon black particles as a paste agent were clarified experimentally.3) The adhesion state of the carbon black of the surface of the oxide particles was observed, and the mechanism of carbon coating was clarified.4) The principle to which carbon black can coat the surface of the iron oxide particles was obtained by Molecule simulation. The experimental and simulation results were compared and examined.5) The validity of this method was also examined on the coating of other oxide particles.