The morphological structure of DJ-9073b extended by the 4th vaccum side-distillate oil ( alkane content is higher and aromatic hydrocarbon content is 67.91% ) was more uniform and compact than that of DJ-9073a extended by the low alkane content oil.

• 填充油中的烷烃含量是影响形态结构、流变行为和加工性能的主要因素:用烷烃含量较高(芳烃含量为67.；91%25)的减压四线馏出油填充的 DJ-9073b；其填充油与基础胶的混合形态比烷烃含量低的DJ-9073 a均匀、细密;