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考察了经甲苯刻蚀后中间相沥青性质的变化规律，包括软化点、各向异性含量及其形态的变化．研究结果表明．甲苯可溶组份含量的微小变化对中间相沥青性质的影响是巨大的，太高或太低的甲苯可溶组份含量都不利于中间相的良好“发育”。当甲苯可溶组份含量合适时，不仅能够提供一个合适的粘度范围，使平面大分子顺利完成有序排列，而且尺寸相对较小的TS分子也能参与这种有序排列，最终形成熔融流动性好的大域体（各向异性等色区面积超过300×100μm）中间相沥青
The properties of mesophase pitch after toluene etching were investigated, including the softening point, the content of anisotropy and the change of its morphology. Research indicates. The effect of minor changes in the content of toluene-soluble components on the properties of mesophase pitch is substantial, and too high or too low levels of toluene-soluble components are detrimental to the good “development” of the mesophase. When the content of toluene soluble component is suitable, not only can a suitable viscosity range be provided, but the planar macromolecules can be arranged in an orderly manner, and TS molecules with relatively small size can also participate in this orderly arrangement, finally forming a melt flow Good macro-domain (anisotropic and other color area more than 300 × 100μm) mesophase pitch