以中温煤沥青为原料,利用热缩聚法制得中间相炭微球(MCMB).将MCMB在300℃预氧化,利用元素分析、FT-IR、XRD、HRTEM等手段,研究了预氧化后及在不同热处理温度下MCMB组成和结构的变化.结果表明,MCMB预氧化后,氧含量增加,官能团种类增加,微晶结构变差,随着热处理温度升高,杂原子逸出,官能团种类减少,微晶高度和宽度增大,层状结构逐渐规整;当热处理温度为2300℃时,石墨化度为89.53%,MCMB中几乎不存在杂原子,微晶结构极大改善,层间距为0.3363nm,接近石墨层间距,在HRTEM中可观察到显著石墨化条纹.
参考文献
| [1] | Li F;Ni HJ;Wang J;Sun BD;Du ZH .Gelcasting of aqueous mesocarbon microbead suspension[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(14):2989-2995. |
| [2] | 吕永根,凌立成,刘朗.原生吡啶不溶物在煤焦油聚合制备中间相炭微球过程中的作用[J].新型碳材料,1998(01):38-42. |
| [3] | 沈曾民.新型碳材料[M].北京:化学工业出版社,2003:241-275. |
| [4] | Christopher Norfolk;Alexander Mukasyan;Daniel Hayes .Processing of mesocarbon microbeads to high-performance materials: Part I. Studies towards the sintering mechanism[J].Carbon: An International Journal Sponsored by the American Carbon Society,2004(1):11-19. |
| [5] | Brooks J D;Taylor G H.[J].Carbon,1965(03):185-193. |
| [6] | Chang Young-Chul;Sohn Hun-Joon;Ku Cha-Hun;Wang Yong-Gang .Anodic performances of mesocarbon microbeads (MCMB) prepared from synthetic naphthalene isotropic pitch[J].Carbon: An International Journal Sponsored by the American Carbon Society,1999(8):1285-1297. |
| [7] | Bouhadda Y;Bormann D;Sheu E et al.[J].Fuel,2007,86(12-13):1855-1364. |
| [8] | Martinez-Escandell M.;Rodriguez-Valero MA.;Coronado JS. Rodriguez-Reinoso F. .Modification of the sintering behaviour of mesophase powder from a petroleum residue[J].Carbon: An International Journal Sponsored by the American Carbon Society,2002(15):2843-2853. |
| [9] | J.Alcaniz-Monge;D.Cazorla-Amoros;A.Linares-Solano .Characterisation of coal tar pitches by thermal analysis, infrared spectroscopy and solvent fractionation[J].Fuel,2001(1):41-48. |
| [10] | Liedtke V.;Huttinger KJ. .MESOPHASE PITCHES AS MATRIX PRECURSOR OF CARBON FIBER REINFORCED CARBON .1. MESOPHASE PITCH PREPARATION AND CHARACTERIZATION[J].Carbon: An International Journal Sponsored by the American Carbon Society,1996(9):1057-1066. |
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