| 摘要 |
This disclosure relates to polyester fiber that can be used for an airbag fabric. Particularly, the present invention relates to a polyester fiber that has elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes, and additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength. Also disclosed is a method for preparing the same, and fabric for an airbag prepared therefrom. The polyester fiber simultaneously has low initial Young's modulus and excellent mechanical properties, and thus, it may provide excellent packing, dimensional stability, and excellent air cut-off effect, and simultaneously, minimize impact applied to a passenger thus safely protecting a passenger.
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