| 摘要 |
Amide solvent is added by inorganic salt, solubilized. Aromatic diamine and aromatic diacid chloride with same mol are added to this solution, and solution polymerized under 30 deg.C to give liquid crystal prepolymer. This prepolymer is sprayed or spun into 3 grade amine solvent which is pyridine or ammonia via spinneret to give whole polymer. This whole polymer is maintained at pressure of above 5kg/cm2, temperature of above 30 deg.C for at least 30 sec. Then the polymer is removed of high pressure instantaneously, goes fastly through exit, thus giving wholly aromatic polyamide pulp-like staple fiber with bulky improved polymerization degree, crystallization properties.
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