以吡啶硼烷为添加剂对煤焦油沥青进行改性，考察了工艺条件（硼添加量，反应温度，反应时间）对改性沥青软化点、残炭值及其族组成的影响。发现吡啶硼烷参与并促进了沥青分子的反应，其结果是随着硼添加量的增加，改性沥青的软化点、残炭值提高，TS组份的含量降低，而PI组份的含量增加。在同一反应条件下，体系有无吡啶硼烷，所得结果有显著差别。吡啶硼烷改性系列的软化点、残炭值及PI组份的含量均明显高于纯沥青系列。
Coal tar pitch was modified by adding pyridine-borane. The effectof reaction conditions on the properties and components of modified pitches was investigated. It was found that pyridine-borane participate in and accelerated the reaction among molecules, but changed the component and structure of pitches. The softening points, carbon yields and PI fraction content increased with the increasing of boron addition and reaction temperature, while TS fraction content of pitches decreased. Compared with the pure pitches, pyridine-borane modified pitches had higher softening points, carbon yields and PI fraction content at the same reaction conditions.
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