Preparation of high performance pitch based carbon fiber by controling spinning and carbonization conclitious

在HF/BF3催化剂作用下，以低污染的芳烃为原料，高产率地制备了中间相沥青。预计衍生碳纤维将具有高性能，并以合理的成本生产。将描述中间相沥青的合成、结构和性质，它们强烈地依赖于起始芳烃和制备条件。纺丝过程可以控制纤维的形状和质地，这两者都与性能密切相关。选择合适的纺丝喷嘴和中间相螺距，可制得截面平整、细小可达1.5微米的纤维和织构均匀的圆形纤维。获得了可以接受的压缩强度，在稳定化过程中通过缓慢加热实现了圆形随机织构。还可以讨论中间相沥青的其他一些应用。

Mesophase pitch has been successfully prepared at very highly yield from aromatic hydroearbons with low contaminant levels using HF/BF_3 as a catalyst. The derived carbon fiber is expected to be of high performance and to be produced at reasonable cost. The synthesis, structure, and properties of the mesophase pitchs, which are strongly dependent upon the starting aromatic hydrocarbons and preparation conditions, will be described. The spinning process can control the shape and texture of the fiber, both of which are intimately related to performance. Fibers with a flat cross section, as thin as 1.5 micrometer, and round fibers with random texture can be produced when the spinning nozzle and the mesophase pitch are properly selected. Acceptable compression strength has been obtained with the ranbdomtexture in the round realized by slow heating during stabilization. Some other applications of mesophase pitch can be addressed.