| 方嘉，蒋渊，李健，秦源，李鉴松，孟忠伟.热老化对炭黑颗粒氧化特性影响的试验研究[J].内燃机工程,2018,39(6):52-58. |
| Experimental Investigation on the Influence of Thermal Aging on Oxidation Characteristics of Carbon Black Particles |
| DOI：10.13949/j.cnki.nrjgc.2018.06.007 |
| Key Words:thermal aging oxidation performance activation energy carbon black |
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| Abstract:The thermogravimetric experiments of different thermal aging temperatures, times and oxygen concentrations were carried out by a thermogravimetric analyzer, and then the oxidation kinetics of carbon black particles was analyzed by the differential(ABSW) and Arrhenius methods, respectively. Results show that when the aging temperature is within the range of 325℃ to 400℃, the activation energy of carbon black particles decreases from 181kJ/mol to 170kJ/mol with the thermal temperature increases. As the aging time increases, the activation energy of the particles decreases from 180kJ/mol to 172kJ/mol and remains unchanged. When the aged oxygen concentration is less than 5%, the activation energy gradually increases to 188kJ/mol with the aged oxygen concentration increases, and when the aged oxygen concentration is higher than 5%, the activation energy decreases from 188kJ/mol to 170kJ/mol. In addition, based on the analysis of microstructure of carbon black particles by a high-resolution transmission electron microscopy, it is found that as the aging temperature, time and oxygen concentration decrease, the shell structure of basic carbon particulates tends to be more ordered, which leads to a higher degree of graphitization and lower oxidation activity. |
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