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材料工程  2010 

硅油/煤沥青乳液制备中间相炭微球

, PP. 56-59

Keywords: 煤沥青,热聚合,中间相炭微球,硅油/煤沥青乳液

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Abstract:

以中温煤沥青为原料,耐高温硅油为分散剂和导热介质,通过在反应釜中混合形成硅油/煤沥青乳液来制备中间相炭微球(MesocarbonMicrobeads,MCMB).利用SEM、激光粒度仪和XRD分析等,研究了硅油用量对MCMB形成的影响.结果表明硅油添加量对MCMB的形成有重要影响,当加入少量硅油后,MCMB粒径显著减小,分布均匀,小球表面较光滑,粘结现象减少,微晶结构得到改善,但四氢呋喃不溶物(THFI)收率降低.增加硅油用量,MCMB的粒径大小和微晶结构变化不大,小球之间粘结少,THFI收率增加,但小球表面附着小颗粒.当硅油/煤沥青的质量比为31时,可得到粒径分布窄,D50为0.82μm,表面比较光滑,收率为8.2%的MCMB.

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