In this work, it was the first time that the BN fibers were synthesized using H3BO3 and C3N6H6. The preparation process was simple and easy to be controlled. The chemical qualities of the precursor fibers were stable. The N content of BN fibers was high.

• 本文首次以C3N6H6和H3BO3为原料制得BN纤维，合成先驱体的工艺简单易于控制，先驱体呈纤维状结构，化学性质稳定，且其制得的BN纤维氮含量高。