化工进展2018，Vol.37Issue(1)：189-194,6.DOI:10.16085/j.issn.1000-6613.2017-0789
三种不同原料中间相沥青的性质表征
Characterization of mesophase pitches made from three different raw materials
段春婷 1刘均庆 2徐文强 1梁朋 1郑冬芳 1王秋实 1宋怀河1
作者信息
- 1. 北京低碳清洁能源研究所,北京102211
- 2. 北京化工大学材料科学与工程学院,北京 100029
- 折叠
摘要
Abstract
In order to better understand the influence of raw materials on mesophase pitch,we synthesized three kinds of mesophase pitches with different raw materials(naphthalene,coal tar,direct coal liquefaction residue DCLR),and the properties of volatile component,saturation,molecular ordering and molecular weight of the mesophase pitches were compared. The used analysis methods included polarizing optical microscope,elemental analysis,FTIR,MALDI-TOF MS,XRD,TGA and Raman spectroscopy. The results indicated that:naphthalene based mesophase pitch(AR-MP)had higher molecular weight and narrower molecular weight distribution,higher saturation,lower volatile content and less compact structure than the other two pitches. AR-MP had a more linear structure,and as a consequence,lower soft point and finely dispersed flow texture. Coal tar based mesophase pitch (CT-MP) has broader molecular weight distribution,lower saturation,higher volatile content. It had a more compact structures due to the more rigid and flat multiple-ring molecules. The CT-MP exhibited the highest soft point and the worst flow ability,which made it difficult to form flow texture. DCLR based mesophase pitch(DCLR-MP)had narrow molecular weight distribution,moderate saturation and higher regularity of molecular structure. The DCLR-MP showed highly ordered structure and high soft point but poor flow ability.关键词
中间相沥青/碳氢化合物/化学分析/饱和度/分布/有序度Key words
mesophase pitch/hydrocarbons/chemical analysis/saturation/distributions/molecular ordering引用本文复制引用
段春婷,刘均庆,徐文强,梁朋,郑冬芳,王秋实,宋怀河..三种不同原料中间相沥青的性质表征[J].化工进展,2018,37(1):189-194,6.
