| 摘要 |
Described and claimed is a process for obtaining high-modulus, high-strength linear polycondensates, e.g., polyamides, comprising the sequential steps drawing at room temperature, isothermal annealing at 180 DEG -270 DEG C., a second drawing at room temperature, and a second isothermal annealing at 120 DEG -260 DEG C., an orientation degree after the second drawing being 20-25.
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