| 摘要 |
Amide solvent alone, or its mixture with metal salt is solubilized as a spinning solvent. Aromatic diamine and aromatic diacid chloride which is added in two stages are added to this solution. In addition of aromatic diacid chloride in two stages, aromatic diacid chloride is added 20-80 wt.% from whole amount firstly, then added by ammonia or amide solvent which contains ammonia, then the rest aromatic diacid chloride is added 20-80 wt.% secondly. Ungelled low viscosity liquid crystal prepolymer solution produced from polymerization is spun or extrusion sprayed simultaneously with 3grade amine solvent alone or its mixture with amide solvent non-proton solvent to give title fiber with hgih orientation, et.
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