本发明涉及聚吲哚（PBZ）纤维和从聚吲哚纺液长丝去除多磷酸的方法。
The present invention relates to polybenzazaole (PBZ) fibers and processes for removing polyphosphoric acid from a polybenzazole dope filament.
本发明涉及聚吲哚（PBZ）纤维和从聚吲哚纺液长丝去除多磷酸的方法。
The present invention relates to polybenzazaole (PBZ) fibers and processes for removing polyphosphoric acid from a polybenzazole dope filament.
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