炭化条件对针状焦结构的影响

以除去喹啉不溶物的中温煤沥青为原料,分别在不同的反应温度和保温时间下制备了中间相炭微球(MCMB);在磁场条件下制备了有序结构针状焦;通过扫描电镜(SEM)考察了不同反应条件下中间相炭微球和针状焦的形貌,讨论了中间相形成影响因素对针状焦结构的影响.结果表明,中间相形成阶段的反应温度、保温时间和体系黏度对针状焦的结构和性能具有重要影响,磁场对针状焦的流线型结构有促进作用.

EFFECTS OF CARBONIZATION CONDITIONS ON THE STRUCTURE OF NEEDLE COKE

In this paper a series of mesophase carbon microbead(MCMB)were prepared from a coal tar pitch without quinoline insoluble at different temperature by varying the holding time.The needle coke was prepared from a coal tar pitch without quinoline insoluble under magnetic field.By analyzing morphologies of MCMB and needle coke with scanning electron microscope,the effect of mesophase formation factors on structure of needle coke were discussed.The results showed that the structure and properties of needle coke ...