| 摘要 |
The present invention relates to a method for manufacturing polyurethane urea elastic fiber for high speed spinning, wherein the method includes a step of obtaining a prepolymer by firstly polymerizing a polyol and a diisocyanate, a step of obtaining a spinning solution by performing a secondary polymerization by dissolving the prepolymer in an organic solvent and adding a chain extender and a chain termination agent, and a step of obtaining polyurethane urea elastic fiber by dry-spinning or wet-spinning the spinning solution. The diisocyanate includes at least two kinds of organic diisocyanates selected from an aromatic diisocyanate, an aliphatic diisocyanate, and an alicyclic organic diisocyanate. The chain termination agent includes an n-butylamine. |
